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authorGabor Juhos <juhosg@openwrt.org>2013-12-16 07:51:19 +0000
committerGabor Juhos <juhosg@openwrt.org>2013-12-16 07:51:19 +0000
commit7e3644d3cf37cd24c3a295825200743123acbd91 (patch)
tree025ced24d4bc8a7632dcfc7b4f5d06b690fe6367 /target/linux/generic/files/fs
parent85755deaf66746d5e2d65aedfda2352d566e9a53 (diff)
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kernel: update yaffs code
Use the latest version of the yaffs code. Fetched from the yaffs2 git tree and it is based on the following commit: commit bc76682d93955cfb33051beb503ad9f8a5450578 Merge: 3a8580e ffa781d Author: Charles Manning <cdhmanning@gmail.com> Date: Thu Jul 11 17:46:25 2013 +1200 Merge branch 'master' of ssh://www.aleph1.co.uk/home/aleph1/git/yaffs2 Signed-off-by: Gabor Juhos <juhosg@openwrt.org> SVN-Revision: 39084
Diffstat (limited to 'target/linux/generic/files/fs')
-rw-r--r--target/linux/generic/files/fs/yaffs2/Kconfig65
-rw-r--r--target/linux/generic/files/fs/yaffs2/Makefile9
-rw-r--r--target/linux/generic/files/fs/yaffs2/NOTE.openwrt2
-rw-r--r--target/linux/generic/files/fs/yaffs2/devextras.h101
-rw-r--r--target/linux/generic/files/fs/yaffs2/moduleconfig.h86
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_allocator.c458
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_allocator.h14
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_attribs.c124
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_attribs.h28
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_bitmap.c82
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_bitmap.h22
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.c425
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.h15
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_ecc.c130
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_ecc.h26
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_getblockinfo.h14
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_guts.c6240
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_guts.h1042
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_linux.h35
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_linux_allocator.c200
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_list.h127
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_mtdif.c272
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_mtdif.h12
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.c361
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.h28
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.c257
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.h29
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_nameval.c157
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_nameval.h11
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_nand.c148
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_nand.h33
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_nandemul2k.h39
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.c30
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.h16
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.c213
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.h26
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_qsort.c163
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_qsort.h34
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_summary.c313
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_summary.h37
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.c564
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.h43
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_tagsmarshall.c199
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_tagsmarshall.h (renamed from target/linux/generic/files/fs/yaffs2/yaffsinterface.h)9
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.c28
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.h24
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_trace.h11
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_verify.c601
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_verify.h42
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_vfs.c (renamed from target/linux/generic/files/fs/yaffs2/yaffs_vfs_glue.c)3972
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.c367
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.h4
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c1740
-rw-r--r--target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.h37
-rw-r--r--target/linux/generic/files/fs/yaffs2/yportenv.h282
55 files changed, 8848 insertions, 10499 deletions
diff --git a/target/linux/generic/files/fs/yaffs2/Kconfig b/target/linux/generic/files/fs/yaffs2/Kconfig
index 7b3988c..408570f 100644
--- a/target/linux/generic/files/fs/yaffs2/Kconfig
+++ b/target/linux/generic/files/fs/yaffs2/Kconfig
@@ -1,23 +1,23 @@
#
-# YAFFS file system configurations
+# yaffs file system configurations
#
config YAFFS_FS
- tristate "YAFFS2 file system support"
+ tristate "yaffs2 file system support"
default n
depends on MTD_BLOCK
select YAFFS_YAFFS1
select YAFFS_YAFFS2
help
- YAFFS2, or Yet Another Flash Filing System, is a filing system
+ yaffs2, or Yet Another Flash File System, is a file system
optimised for NAND Flash chips.
- To compile the YAFFS2 file system support as a module, choose M
+ To compile the yaffs2 file system support as a module, choose M
here: the module will be called yaffs2.
If unsure, say N.
- Further information on YAFFS2 is available at
+ Further information on yaffs2 is available at
<http://www.aleph1.co.uk/yaffs/>.
config YAFFS_YAFFS1
@@ -25,7 +25,7 @@ config YAFFS_YAFFS1
depends on YAFFS_FS
default y
help
- Enable YAFFS1 support -- yaffs for 512 byte / page devices
+ Enable yaffs1 support -- yaffs for 512 byte / page devices
Not needed for 2K-page devices.
@@ -49,11 +49,11 @@ config YAFFS_9BYTE_TAGS
If unsure, say N.
config YAFFS_DOES_ECC
- bool "Lets Yaffs do its own ECC"
+ bool "Lets yaffs do its own ECC"
depends on YAFFS_FS && YAFFS_YAFFS1 && !YAFFS_9BYTE_TAGS
default n
help
- This enables Yaffs to use its own ECC functions instead of using
+ This enables yaffs to use its own ECC functions instead of using
the ones from the generic MTD-NAND driver.
If unsure, say N.
@@ -74,7 +74,7 @@ config YAFFS_YAFFS2
depends on YAFFS_FS
default y
help
- Enable YAFFS2 support -- yaffs for >= 2K bytes per page devices
+ Enable yaffs2 support -- yaffs for >= 2K bytes per page devices
If unsure, say Y.
@@ -91,39 +91,23 @@ config YAFFS_AUTO_YAFFS2
If unsure, say Y.
config YAFFS_DISABLE_TAGS_ECC
- bool "Disable YAFFS from doing ECC on tags by default"
+ bool "Disable yaffs from doing ECC on tags by default"
depends on YAFFS_FS && YAFFS_YAFFS2
default n
help
- This defaults Yaffs to using its own ECC calculations on tags instead of
+ This defaults yaffs to using its own ECC calculations on tags instead of
just relying on the MTD.
This behavior can also be overridden with tags_ecc_on and
tags_ecc_off mount options.
If unsure, say N.
-
-config YAFFS_DISABLE_WIDE_TNODES
- bool "Turn off wide tnodes"
- depends on YAFFS_FS
- default n
- help
- Wide tnodes are only used for NAND arrays >=32MB for 512-byte
- page devices and >=128MB for 2k page devices. They use slightly
- more RAM but are faster since they eliminate chunk group
- searching.
-
- Setting this to 'y' will force tnode width to 16 bits and save
- memory but make large arrays slower.
-
- If unsure, say N.
-
config YAFFS_ALWAYS_CHECK_CHUNK_ERASED
bool "Force chunk erase check"
depends on YAFFS_FS
default n
help
- Normally YAFFS only checks chunks before writing until an erased
+ Normally yaffs only checks chunks before writing until an erased
chunk is found. This helps to detect any partially written
chunks that might have happened due to power loss.
@@ -136,17 +120,6 @@ config YAFFS_ALWAYS_CHECK_CHUNK_ERASED
If unsure, say Y.
-config YAFFS_SHORT_NAMES_IN_RAM
- bool "Cache short names in RAM"
- depends on YAFFS_FS
- default y
- help
- If this config is set, then short names are stored with the
- yaffs_Object. This costs an extra 16 bytes of RAM per object,
- but makes look-ups faster.
-
- If unsure, say Y.
-
config YAFFS_EMPTY_LOST_AND_FOUND
bool "Empty lost and found on boot"
depends on YAFFS_FS
@@ -177,7 +150,17 @@ config YAFFS_DISABLE_BACKGROUND
If this is set, then background processing is disabled.
Background processing makes many foreground activities faster.
- If unsure, say N.
+ If unsure, say N.
+
+config YAFFS_DISABLE_BAD_BLOCK_MARKING
+ bool "Disable yaffs2 bad block marking"
+ depends on YAFFS_FS
+ default n
+ help
+ Useful during early flash bring up to prevent problems causing
+ lots of bad block marking.
+
+ If unsure, say N.
config YAFFS_XATTR
bool "Enable yaffs2 xattr support"
@@ -186,5 +169,3 @@ config YAFFS_XATTR
help
If this is set then yaffs2 will provide xattr support.
If unsure, say Y.
-
-
diff --git a/target/linux/generic/files/fs/yaffs2/Makefile b/target/linux/generic/files/fs/yaffs2/Makefile
index fbdbd4a..f9a9fb1 100644
--- a/target/linux/generic/files/fs/yaffs2/Makefile
+++ b/target/linux/generic/files/fs/yaffs2/Makefile
@@ -4,14 +4,15 @@
obj-$(CONFIG_YAFFS_FS) += yaffs.o
-yaffs-y := yaffs_ecc.o yaffs_vfs_glue.o yaffs_guts.o yaffs_checkptrw.o
+yaffs-y := yaffs_ecc.o yaffs_vfs.o yaffs_guts.o yaffs_checkptrw.o
yaffs-y += yaffs_packedtags1.o yaffs_packedtags2.o yaffs_nand.o
-yaffs-y += yaffs_tagscompat.o yaffs_tagsvalidity.o
-yaffs-y += yaffs_mtdif.o yaffs_mtdif1.o yaffs_mtdif2.o
-yaffs-y += yaffs_nameval.o
+yaffs-y += yaffs_tagscompat.o yaffs_tagsmarshall.o
+yaffs-y += yaffs_mtdif.o
+yaffs-y += yaffs_nameval.o yaffs_attribs.o
yaffs-y += yaffs_allocator.o
yaffs-y += yaffs_yaffs1.o
yaffs-y += yaffs_yaffs2.o
yaffs-y += yaffs_bitmap.o
+yaffs-y += yaffs_summary.o
yaffs-y += yaffs_verify.o
diff --git a/target/linux/generic/files/fs/yaffs2/NOTE.openwrt b/target/linux/generic/files/fs/yaffs2/NOTE.openwrt
index 1ad01d0..0be479d 100644
--- a/target/linux/generic/files/fs/yaffs2/NOTE.openwrt
+++ b/target/linux/generic/files/fs/yaffs2/NOTE.openwrt
@@ -1,4 +1,4 @@
The yaffs2 source has been fetched from the yaffs2 GIT tree.
URL: git://www.aleph1.co.uk/yaffs2
-Version: 7396445d7d0d13469b9505791114b9dc6b76ffe4 (2010-10-20)
+Version: bc76682d93955cfb33051beb503ad9f8a5450578 (2013-12-03)
diff --git a/target/linux/generic/files/fs/yaffs2/devextras.h b/target/linux/generic/files/fs/yaffs2/devextras.h
deleted file mode 100644
index ce30c82..0000000
--- a/target/linux/generic/files/fs/yaffs2/devextras.h
+++ /dev/null
@@ -1,101 +0,0 @@
-/*
- * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
- *
- * Copyright (C) 2002-2010 Aleph One Ltd.
- * for Toby Churchill Ltd and Brightstar Engineering
- *
- * Created by Charles Manning <charles@aleph1.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 2.1 as
- * published by the Free Software Foundation.
- *
- * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
- */
-
-/*
- * This file is just holds extra declarations of macros that would normally
- * be providesd in the Linux kernel. These macros have been written from
- * scratch but are functionally equivalent to the Linux ones.
- *
- */
-
-#ifndef __EXTRAS_H__
-#define __EXTRAS_H__
-
-
-#include "yportenv.h"
-
-#if !(defined __KERNEL__)
-
-/* Definition of types */
-typedef unsigned char __u8;
-typedef unsigned short __u16;
-typedef unsigned __u32;
-
-#endif
-
-
-#if !(defined __KERNEL__)
-
-
-#ifndef WIN32
-#include <sys/stat.h>
-#endif
-
-
-#ifdef CONFIG_YAFFS_PROVIDE_DEFS
-/* File types */
-
-
-#define DT_UNKNOWN 0
-#define DT_FIFO 1
-#define DT_CHR 2
-#define DT_DIR 4
-#define DT_BLK 6
-#define DT_REG 8
-#define DT_LNK 10
-#define DT_SOCK 12
-#define DT_WHT 14
-
-
-#ifndef WIN32
-#include <sys/stat.h>
-#endif
-
-/*
- * Attribute flags. These should be or-ed together to figure out what
- * has been changed!
- */
-#define ATTR_MODE 1
-#define ATTR_UID 2
-#define ATTR_GID 4
-#define ATTR_SIZE 8
-#define ATTR_ATIME 16
-#define ATTR_MTIME 32
-#define ATTR_CTIME 64
-
-struct iattr {
- unsigned int ia_valid;
- unsigned ia_mode;
- unsigned ia_uid;
- unsigned ia_gid;
- unsigned ia_size;
- unsigned ia_atime;
- unsigned ia_mtime;
- unsigned ia_ctime;
- unsigned int ia_attr_flags;
-};
-
-#endif
-
-#else
-
-#include <linux/types.h>
-#include <linux/fs.h>
-#include <linux/stat.h>
-
-#endif
-
-
-#endif
diff --git a/target/linux/generic/files/fs/yaffs2/moduleconfig.h b/target/linux/generic/files/fs/yaffs2/moduleconfig.h
deleted file mode 100644
index 4b4d642..0000000
--- a/target/linux/generic/files/fs/yaffs2/moduleconfig.h
+++ /dev/null
@@ -1,86 +0,0 @@
-/*
- * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
- *
- * Copyright (C) 2002-2010 Aleph One Ltd.
- * for Toby Churchill Ltd and Brightstar Engineering
- *
- * Created by Martin Fouts <Martin.Fouts@palmsource.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 2.1 as
- * published by the Free Software Foundation.
- *
- * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
- */
-
-#ifndef __YAFFS_CONFIG_H__
-#define __YAFFS_CONFIG_H__
-
-#ifdef YAFFS_OUT_OF_TREE
-
-/* DO NOT UNSET THESE THREE. YAFFS2 will not compile if you do. */
-#define CONFIG_YAFFS_FS
-#define CONFIG_YAFFS_YAFFS1
-#define CONFIG_YAFFS_YAFFS2
-
-/* These options are independent of each other. Select those that matter. */
-
-/* Default: Not selected */
-/* Meaning: Yaffs does its own ECC, rather than using MTD ECC */
-/* #define CONFIG_YAFFS_DOES_ECC */
-
-/* Default: Selected */
-/* Meaning: Yaffs does its own ECC on tags for packed tags rather than use mtd */
-#define CONFIG_YAFFS_DOES_TAGS_ECC
-
-/* Default: Not selected */
-/* Meaning: ECC byte order is 'wrong'. Only meaningful if */
-/* CONFIG_YAFFS_DOES_ECC is set */
-/* #define CONFIG_YAFFS_ECC_WRONG_ORDER */
-
-/* Default: Not selected */
-/* Meaning: Always test whether chunks are erased before writing to them.
- Use during mtd debugging and init. */
-/* #define CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED */
-
-/* Default: Not Selected */
-/* Meaning: At mount automatically empty all files from lost and found. */
-/* This is done to fix an old problem where rmdir was not checking for an */
-/* empty directory. This can also be achieved with a mount option. */
-#define CONFIG_YAFFS_EMPTY_LOST_AND_FOUND
-
-/* Default: Selected */
-/* Meaning: Cache short names, taking more RAM, but faster look-ups */
-#define CONFIG_YAFFS_SHORT_NAMES_IN_RAM
-
-/* Default: Unselected */
-/* Meaning: Select to disable block refreshing. */
-/* Block Refreshing periodically rewrites the oldest block. */
-/* #define CONFIG_DISABLE_BLOCK_REFRESHING */
-
-/* Default: Unselected */
-/* Meaning: Select to disable background processing */
-/* #define CONFIG_DISABLE_BACKGROUND */
-
-
-/* Default: Selected */
-/* Meaning: Enable XATTR support */
-#define CONFIG_YAFFS_XATTR
-
-/*
-Older-style on-NAND data format has a "page_status" byte to record
-chunk/page state. This byte is zeroed when the page is discarded.
-Choose this option if you have existing on-NAND data in this format
-that you need to continue to support. New data written also uses the
-older-style format.
-Note: Use of this option generally requires that MTD's oob layout be
-adjusted to use the older-style format. See notes on tags formats and
-MTD versions in yaffs_mtdif1.c.
-*/
-/* Default: Not selected */
-/* Meaning: Use older-style on-NAND data format with page_status byte */
-/* #define CONFIG_YAFFS_9BYTE_TAGS */
-
-#endif /* YAFFS_OUT_OF_TREE */
-
-#endif /* __YAFFS_CONFIG_H__ */
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_allocator.c b/target/linux/generic/files/fs/yaffs2/yaffs_allocator.c
index c0513d5..c8f2861 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_allocator.c
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_allocator.c
@@ -1,299 +1,253 @@
/*
- * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
*
* This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 2.1 as
+ * it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
- *
- * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
*/
-
#include "yaffs_allocator.h"
#include "yaffs_guts.h"
#include "yaffs_trace.h"
#include "yportenv.h"
-#ifdef CONFIG_YAFFS_YMALLOC_ALLOCATOR
-
-void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev)
-{
- dev = dev;
-}
-
-void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev)
-{
- dev = dev;
-}
-
-yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev)
-{
- return (yaffs_tnode_t *)YMALLOC(dev->tnode_size);
-}
-
-void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn)
-{
- dev = dev;
- YFREE(tn);
-}
-
-void yaffs_init_raw_objs(yaffs_dev_t *dev)
-{
- dev = dev;
-}
-
-void yaffs_deinit_raw_objs(yaffs_dev_t *dev)
-{
- dev = dev;
-}
-
-yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev)
-{
- dev = dev;
- return (yaffs_obj_t *) YMALLOC(sizeof(yaffs_obj_t));
-}
-
-
-void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj)
-{
-
- dev = dev;
- YFREE(obj);
-}
-
-#else
+/*
+ * Each entry in yaffs_tnode_list and yaffs_obj_list hold blocks
+ * of approx 100 objects that are themn allocated singly.
+ * This is basically a simplified slab allocator.
+ *
+ * We don't use the Linux slab allocator because slab does not allow
+ * us to dump all the objects in one hit when we do a umount and tear
+ * down all the tnodes and objects. slab requires that we first free
+ * the individual objects.
+ *
+ * Once yaffs has been mainlined I shall try to motivate for a change
+ * to slab to provide the extra features we need here.
+ */
struct yaffs_tnode_list {
struct yaffs_tnode_list *next;
- yaffs_tnode_t *tnodes;
+ struct yaffs_tnode *tnodes;
};
-typedef struct yaffs_tnode_list yaffs_tnodelist_t;
-
-struct yaffs_obj_tList_struct {
- yaffs_obj_t *objects;
- struct yaffs_obj_tList_struct *next;
+struct yaffs_obj_list {
+ struct yaffs_obj_list *next;
+ struct yaffs_obj *objects;
};
-typedef struct yaffs_obj_tList_struct yaffs_obj_tList;
-
+struct yaffs_allocator {
+ int n_tnodes_created;
+ struct yaffs_tnode *free_tnodes;
+ int n_free_tnodes;
+ struct yaffs_tnode_list *alloc_tnode_list;
-struct yaffs_AllocatorStruct {
- int n_tnodesCreated;
- yaffs_tnode_t *freeTnodes;
- int nFreeTnodes;
- yaffs_tnodelist_t *allocatedTnodeList;
+ int n_obj_created;
+ struct list_head free_objs;
+ int n_free_objects;
- int n_objCreated;
- yaffs_obj_t *freeObjects;
- int nFreeObjects;
-
- yaffs_obj_tList *allocatedObjectList;
+ struct yaffs_obj_list *allocated_obj_list;
};
-typedef struct yaffs_AllocatorStruct yaffs_Allocator;
-
-
-static void yaffs_deinit_raw_tnodes(yaffs_dev_t *dev)
+static void yaffs_deinit_raw_tnodes(struct yaffs_dev *dev)
{
+ struct yaffs_allocator *allocator =
+ (struct yaffs_allocator *)dev->allocator;
+ struct yaffs_tnode_list *tmp;
- yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator;
-
- yaffs_tnodelist_t *tmp;
-
- if(!allocator){
- YBUG();
+ if (!allocator) {
+ BUG();
return;
}
- while (allocator->allocatedTnodeList) {
- tmp = allocator->allocatedTnodeList->next;
-
- YFREE(allocator->allocatedTnodeList->tnodes);
- YFREE(allocator->allocatedTnodeList);
- allocator->allocatedTnodeList = tmp;
+ while (allocator->alloc_tnode_list) {
+ tmp = allocator->alloc_tnode_list->next;
+ kfree(allocator->alloc_tnode_list->tnodes);
+ kfree(allocator->alloc_tnode_list);
+ allocator->alloc_tnode_list = tmp;
}
- allocator->freeTnodes = NULL;
- allocator->nFreeTnodes = 0;
- allocator->n_tnodesCreated = 0;
+ allocator->free_tnodes = NULL;
+ allocator->n_free_tnodes = 0;
+ allocator->n_tnodes_created = 0;
}
-static void yaffs_init_raw_tnodes(yaffs_dev_t *dev)
+static void yaffs_init_raw_tnodes(struct yaffs_dev *dev)
{
- yaffs_Allocator *allocator = dev->allocator;
-
- if(allocator){
- allocator->allocatedTnodeList = NULL;
- allocator->freeTnodes = NULL;
- allocator->nFreeTnodes = 0;
- allocator->n_tnodesCreated = 0;
- } else
- YBUG();
+ struct yaffs_allocator *allocator = dev->allocator;
+
+ if (!allocator) {
+ BUG();
+ return;
+ }
+
+ allocator->alloc_tnode_list = NULL;
+ allocator->free_tnodes = NULL;
+ allocator->n_free_tnodes = 0;
+ allocator->n_tnodes_created = 0;
}
-static int yaffs_create_tnodes(yaffs_dev_t *dev, int n_tnodes)
+static int yaffs_create_tnodes(struct yaffs_dev *dev, int n_tnodes)
{
- yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator;
+ struct yaffs_allocator *allocator =
+ (struct yaffs_allocator *)dev->allocator;
int i;
- yaffs_tnode_t *newTnodes;
- __u8 *mem;
- yaffs_tnode_t *curr;
- yaffs_tnode_t *next;
- yaffs_tnodelist_t *tnl;
-
- if(!allocator){
- YBUG();
+ struct yaffs_tnode *new_tnodes;
+ u8 *mem;
+ struct yaffs_tnode *curr;
+ struct yaffs_tnode *next;
+ struct yaffs_tnode_list *tnl;
+
+ if (!allocator) {
+ BUG();
return YAFFS_FAIL;
}
if (n_tnodes < 1)
return YAFFS_OK;
-
/* make these things */
+ new_tnodes = kmalloc(n_tnodes * dev->tnode_size, GFP_NOFS);
+ mem = (u8 *) new_tnodes;
- newTnodes = YMALLOC(n_tnodes * dev->tnode_size);
- mem = (__u8 *)newTnodes;
-
- if (!newTnodes) {
- T(YAFFS_TRACE_ERROR,
- (TSTR("yaffs: Could not allocate Tnodes" TENDSTR)));
+ if (!new_tnodes) {
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "yaffs: Could not allocate Tnodes");
return YAFFS_FAIL;
}
/* New hookup for wide tnodes */
for (i = 0; i < n_tnodes - 1; i++) {
- curr = (yaffs_tnode_t *) &mem[i * dev->tnode_size];
- next = (yaffs_tnode_t *) &mem[(i+1) * dev->tnode_size];
+ curr = (struct yaffs_tnode *)&mem[i * dev->tnode_size];
+ next = (struct yaffs_tnode *)&mem[(i + 1) * dev->tnode_size];
curr->internal[0] = next;
}
- curr = (yaffs_tnode_t *) &mem[(n_tnodes - 1) * dev->tnode_size];
- curr->internal[0] = allocator->freeTnodes;
- allocator->freeTnodes = (yaffs_tnode_t *)mem;
+ curr = (struct yaffs_tnode *)&mem[(n_tnodes - 1) * dev->tnode_size];
+ curr->internal[0] = allocator->free_tnodes;
+ allocator->free_tnodes = (struct yaffs_tnode *)mem;
- allocator->nFreeTnodes += n_tnodes;
- allocator->n_tnodesCreated += n_tnodes;
+ allocator->n_free_tnodes += n_tnodes;
+ allocator->n_tnodes_created += n_tnodes;
/* Now add this bunch of tnodes to a list for freeing up.
* NB If we can't add this to the management list it isn't fatal
* but it just means we can't free this bunch of tnodes later.
*/
-
- tnl = YMALLOC(sizeof(yaffs_tnodelist_t));
+ tnl = kmalloc(sizeof(struct yaffs_tnode_list), GFP_NOFS);
if (!tnl) {
- T(YAFFS_TRACE_ERROR,
- (TSTR
- ("yaffs: Could not add tnodes to management list" TENDSTR)));
- return YAFFS_FAIL;
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "Could not add tnodes to management list");
+ return YAFFS_FAIL;
} else {
- tnl->tnodes = newTnodes;
- tnl->next = allocator->allocatedTnodeList;
- allocator->allocatedTnodeList = tnl;
+ tnl->tnodes = new_tnodes;
+ tnl->next = allocator->alloc_tnode_list;
+ allocator->alloc_tnode_list = tnl;
}
- T(YAFFS_TRACE_ALLOCATE, (TSTR("yaffs: Tnodes added" TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_ALLOCATE, "Tnodes added");
return YAFFS_OK;
}
-
-yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev)
+struct yaffs_tnode *yaffs_alloc_raw_tnode(struct yaffs_dev *dev)
{
- yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator;
- yaffs_tnode_t *tn = NULL;
+ struct yaffs_allocator *allocator =
+ (struct yaffs_allocator *)dev->allocator;
+ struct yaffs_tnode *tn = NULL;
- if(!allocator){
- YBUG();
+ if (!allocator) {
+ BUG();
return NULL;
}
/* If there are none left make more */
- if (!allocator->freeTnodes)
+ if (!allocator->free_tnodes)
yaffs_create_tnodes(dev, YAFFS_ALLOCATION_NTNODES);
- if (allocator->freeTnodes) {
- tn = allocator->freeTnodes;
- allocator->freeTnodes = allocator->freeTnodes->internal[0];
- allocator->nFreeTnodes--;
+ if (allocator->free_tnodes) {
+ tn = allocator->free_tnodes;
+ allocator->free_tnodes = allocator->free_tnodes->internal[0];
+ allocator->n_free_tnodes--;
}
return tn;
}
/* FreeTnode frees up a tnode and puts it back on the free list */
-void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn)
+void yaffs_free_raw_tnode(struct yaffs_dev *dev, struct yaffs_tnode *tn)
{
- yaffs_Allocator *allocator = dev->allocator;
+ struct yaffs_allocator *allocator = dev->allocator;
- if(!allocator){
- YBUG();
+ if (!allocator) {
+ BUG();
return;
}
if (tn) {
- tn->internal[0] = allocator->freeTnodes;
- allocator->freeTnodes = tn;
- allocator->nFreeTnodes++;
+ tn->internal[0] = allocator->free_tnodes;
+ allocator->free_tnodes = tn;
+ allocator->n_free_tnodes++;
}
- dev->checkpoint_blocks_required = 0; /* force recalculation*/
+ dev->checkpoint_blocks_required = 0; /* force recalculation */
}
+/*--------------- yaffs_obj alloaction ------------------------
+ *
+ * Free yaffs_objs are stored in a list using obj->siblings.
+ * The blocks of allocated objects are stored in a linked list.
+ */
-
-static void yaffs_init_raw_objs(yaffs_dev_t *dev)
+static void yaffs_init_raw_objs(struct yaffs_dev *dev)
{
- yaffs_Allocator *allocator = dev->allocator;
-
- if(allocator) {
- allocator->allocatedObjectList = NULL;
- allocator->freeObjects = NULL;
- allocator->nFreeObjects = 0;
- } else
- YBUG();
+ struct yaffs_allocator *allocator = dev->allocator;
+
+ if (!allocator) {
+ BUG();
+ return;
+ }
+
+ allocator->allocated_obj_list = NULL;
+ INIT_LIST_HEAD(&allocator->free_objs);
+ allocator->n_free_objects = 0;
}
-static void yaffs_deinit_raw_objs(yaffs_dev_t *dev)
+static void yaffs_deinit_raw_objs(struct yaffs_dev *dev)
{
- yaffs_Allocator *allocator = dev->allocator;
- yaffs_obj_tList *tmp;
+ struct yaffs_allocator *allocator = dev->allocator;
+ struct yaffs_obj_list *tmp;
- if(!allocator){
- YBUG();
+ if (!allocator) {
+ BUG();
return;
}
- while (allocator->allocatedObjectList) {
- tmp = allocator->allocatedObjectList->next;
- YFREE(allocator->allocatedObjectList->objects);
- YFREE(allocator->allocatedObjectList);
-
- allocator->allocatedObjectList = tmp;
+ while (allocator->allocated_obj_list) {
+ tmp = allocator->allocated_obj_list->next;
+ kfree(allocator->allocated_obj_list->objects);
+ kfree(allocator->allocated_obj_list);
+ allocator->allocated_obj_list = tmp;
}
- allocator->freeObjects = NULL;
- allocator->nFreeObjects = 0;
- allocator->n_objCreated = 0;
+ INIT_LIST_HEAD(&allocator->free_objs);
+ allocator->n_free_objects = 0;
+ allocator->n_obj_created = 0;
}
-
-static int yaffs_create_free_objs(yaffs_dev_t *dev, int n_obj)
+static int yaffs_create_free_objs(struct yaffs_dev *dev, int n_obj)
{
- yaffs_Allocator *allocator = dev->allocator;
-
+ struct yaffs_allocator *allocator = dev->allocator;
int i;
- yaffs_obj_t *newObjects;
- yaffs_obj_tList *list;
+ struct yaffs_obj *new_objs;
+ struct yaffs_obj_list *list;
- if(!allocator){
- YBUG();
+ if (!allocator) {
+ BUG();
return YAFFS_FAIL;
}
@@ -301,109 +255,103 @@ static int yaffs_create_free_objs(yaffs_dev_t *dev, int n_obj)
return YAFFS_OK;
/* make these things */
- newObjects = YMALLOC(n_obj * sizeof(yaffs_obj_t));
- list = YMALLOC(sizeof(yaffs_obj_tList));
-
- if (!newObjects || !list) {
- if (newObjects){
- YFREE(newObjects);
- newObjects = NULL;
- }
- if (list){
- YFREE(list);
- list = NULL;
- }
- T(YAFFS_TRACE_ALLOCATE,
- (TSTR("yaffs: Could not allocate more objects" TENDSTR)));
+ new_objs = kmalloc(n_obj * sizeof(struct yaffs_obj), GFP_NOFS);
+ list = kmalloc(sizeof(struct yaffs_obj_list), GFP_NOFS);
+
+ if (!new_objs || !list) {
+ kfree(new_objs);
+ new_objs = NULL;
+ kfree(list);
+ list = NULL;
+ yaffs_trace(YAFFS_TRACE_ALLOCATE,
+ "Could not allocate more objects");
return YAFFS_FAIL;
}
/* Hook them into the free list */
- for (i = 0; i < n_obj - 1; i++) {
- newObjects[i].siblings.next =
- (struct ylist_head *)(&newObjects[i + 1]);
- }
+ for (i = 0; i < n_obj; i++)
+ list_add(&new_objs[i].siblings, &allocator->free_objs);
- newObjects[n_obj - 1].siblings.next = (void *)allocator->freeObjects;
- allocator->freeObjects = newObjects;
- allocator->nFreeObjects += n_obj;
- allocator->n_objCreated += n_obj;
+ allocator->n_free_objects += n_obj;
+ allocator->n_obj_created += n_obj;
/* Now add this bunch of Objects to a list for freeing up. */
- list->objects = newObjects;
- list->next = allocator->allocatedObjectList;
- allocator->allocatedObjectList = list;
+ list->objects = new_objs;
+ list->next = allocator->allocated_obj_list;
+ allocator->allocated_obj_list = list;
return YAFFS_OK;
}
-yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev)
+struct yaffs_obj *yaffs_alloc_raw_obj(struct yaffs_dev *dev)
{
- yaffs_obj_t *obj = NULL;
- yaffs_Allocator *allocator = dev->allocator;
+ struct yaffs_obj *obj = NULL;
+ struct list_head *lh;
+ struct yaffs_allocator *allocator = dev->allocator;
- if(!allocator) {
- YBUG();
+ if (!allocator) {
+ BUG();
return obj;
}
/* If there are none left make more */
- if (!allocator->freeObjects)
+ if (list_empty(&allocator->free_objs))
yaffs_create_free_objs(dev, YAFFS_ALLOCATION_NOBJECTS);
- if (allocator->freeObjects) {
- obj = allocator->freeObjects;
- allocator->freeObjects =
- (yaffs_obj_t *) (allocator->freeObjects->siblings.next);
- allocator->nFreeObjects--;
+ if (!list_empty(&allocator->free_objs)) {
+ lh = allocator->free_objs.next;
+ obj = list_entry(lh, struct yaffs_obj, siblings);
+ list_del_init(lh);
+ allocator->n_free_objects--;
}
return obj;
}
-
-void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj)
+void yaffs_free_raw_obj(struct yaffs_dev *dev, struct yaffs_obj *obj)
{
- yaffs_Allocator *allocator = dev->allocator;
+ struct yaffs_allocator *allocator = dev->allocator;
- if(!allocator)
- YBUG();
- else {
- /* Link into the free list. */
- obj->siblings.next = (struct ylist_head *)(allocator->freeObjects);
- allocator->freeObjects = obj;
- allocator->nFreeObjects++;
+ if (!allocator) {
+ BUG();
+ return;
}
+
+ /* Link into the free list. */
+ list_add(&obj->siblings, &allocator->free_objs);
+ allocator->n_free_objects++;
}
-void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev)
+void yaffs_deinit_raw_tnodes_and_objs(struct yaffs_dev *dev)
{
- if(dev->allocator){
- yaffs_deinit_raw_tnodes(dev);
- yaffs_deinit_raw_objs(dev);
-
- YFREE(dev->allocator);
- dev->allocator=NULL;
- } else
- YBUG();
+
+ if (!dev->allocator) {
+ BUG();
+ return;
+ }
+
+ yaffs_deinit_raw_tnodes(dev);
+ yaffs_deinit_raw_objs(dev);
+ kfree(dev->allocator);
+ dev->allocator = NULL;
}
-void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev)
+void yaffs_init_raw_tnodes_and_objs(struct yaffs_dev *dev)
{
- yaffs_Allocator *allocator;
-
- if(!dev->allocator){
- allocator = YMALLOC(sizeof(yaffs_Allocator));
- if(allocator){
- dev->allocator = allocator;
- yaffs_init_raw_tnodes(dev);
- yaffs_init_raw_objs(dev);
- }
- } else
- YBUG();
-}
+ struct yaffs_allocator *allocator;
+ if (dev->allocator) {
+ BUG();
+ return;
+ }
+
+ allocator = kmalloc(sizeof(struct yaffs_allocator), GFP_NOFS);
+ if (allocator) {
+ dev->allocator = allocator;
+ yaffs_init_raw_tnodes(dev);
+ yaffs_init_raw_objs(dev);
+ }
+}
-#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_allocator.h b/target/linux/generic/files/fs/yaffs2/yaffs_allocator.h
index 777f3b0..a8cc322 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_allocator.h
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_allocator.h
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet another Flash File System . A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -18,13 +18,13 @@
#include "yaffs_guts.h"
-void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev);
-void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev);
+void yaffs_init_raw_tnodes_and_objs(struct yaffs_dev *dev);
+void yaffs_deinit_raw_tnodes_and_objs(struct yaffs_dev *dev);
-yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev);
-void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn);
+struct yaffs_tnode *yaffs_alloc_raw_tnode(struct yaffs_dev *dev);
+void yaffs_free_raw_tnode(struct yaffs_dev *dev, struct yaffs_tnode *tn);
-yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev);
-void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj);
+struct yaffs_obj *yaffs_alloc_raw_obj(struct yaffs_dev *dev);
+void yaffs_free_raw_obj(struct yaffs_dev *dev, struct yaffs_obj *obj);
#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_attribs.c b/target/linux/generic/files/fs/yaffs2/yaffs_attribs.c
new file mode 100644
index 0000000..3d778f2
--- /dev/null
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_attribs.c
@@ -0,0 +1,124 @@
+/*
+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2011 Aleph One Ltd.
+ * for Toby Churchill Ltd and Brightstar Engineering
+ *
+ * Created by Charles Manning <charles@aleph1.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include "yaffs_guts.h"
+#include "yaffs_attribs.h"
+
+void yaffs_load_attribs(struct yaffs_obj *obj, struct yaffs_obj_hdr *oh)
+{
+ obj->yst_uid = oh->yst_uid;
+ obj->yst_gid = oh->yst_gid;
+ obj->yst_atime = oh->yst_atime;
+ obj->yst_mtime = oh->yst_mtime;
+ obj->yst_ctime = oh->yst_ctime;
+ obj->yst_rdev = oh->yst_rdev;
+}
+
+void yaffs_load_attribs_oh(struct yaffs_obj_hdr *oh, struct yaffs_obj *obj)
+{
+ oh->yst_uid = obj->yst_uid;
+ oh->yst_gid = obj->yst_gid;
+ oh->yst_atime = obj->yst_atime;
+ oh->yst_mtime = obj->yst_mtime;
+ oh->yst_ctime = obj->yst_ctime;
+ oh->yst_rdev = obj->yst_rdev;
+
+}
+
+void yaffs_load_current_time(struct yaffs_obj *obj, int do_a, int do_c)
+{
+ obj->yst_mtime = Y_CURRENT_TIME;
+ if (do_a)
+ obj->yst_atime = obj->yst_mtime;
+ if (do_c)
+ obj->yst_ctime = obj->yst_mtime;
+}
+
+void yaffs_attribs_init(struct yaffs_obj *obj, u32 gid, u32 uid, u32 rdev)
+{
+ yaffs_load_current_time(obj, 1, 1);
+ obj->yst_rdev = rdev;
+ obj->yst_uid = uid;
+ obj->yst_gid = gid;
+}
+
+static loff_t yaffs_get_file_size(struct yaffs_obj *obj)
+{
+ YCHAR *alias = NULL;
+ obj = yaffs_get_equivalent_obj(obj);
+
+ switch (obj->variant_type) {
+ case YAFFS_OBJECT_TYPE_FILE:
+ return obj->variant.file_variant.file_size;
+ case YAFFS_OBJECT_TYPE_SYMLINK:
+ alias = obj->variant.symlink_variant.alias;
+ if (!alias)
+ return 0;
+ return strnlen(alias, YAFFS_MAX_ALIAS_LENGTH);
+ default:
+ return 0;
+ }
+}
+
+int yaffs_set_attribs(struct yaffs_obj *obj, struct iattr *attr)
+{
+ unsigned int valid = attr->ia_valid;
+
+ if (valid & ATTR_MODE)
+ obj->yst_mode = attr->ia_mode;
+ if (valid & ATTR_UID)
+ obj->yst_uid = attr->ia_uid;
+ if (valid & ATTR_GID)
+ obj->yst_gid = attr->ia_gid;
+
+ if (valid & ATTR_ATIME)
+ obj->yst_atime = Y_TIME_CONVERT(attr->ia_atime);
+ if (valid & ATTR_CTIME)
+ obj->yst_ctime = Y_TIME_CONVERT(attr->ia_ctime);
+ if (valid & ATTR_MTIME)
+ obj->yst_mtime = Y_TIME_CONVERT(attr->ia_mtime);
+
+ if (valid & ATTR_SIZE)
+ yaffs_resize_file(obj, attr->ia_size);
+
+ yaffs_update_oh(obj, NULL, 1, 0, 0, NULL);
+
+ return YAFFS_OK;
+
+}
+
+int yaffs_get_attribs(struct yaffs_obj *obj, struct iattr *attr)
+{
+ unsigned int valid = 0;
+
+ attr->ia_mode = obj->yst_mode;
+ valid |= ATTR_MODE;
+ attr->ia_uid = obj->yst_uid;
+ valid |= ATTR_UID;
+ attr->ia_gid = obj->yst_gid;
+ valid |= ATTR_GID;
+
+ Y_TIME_CONVERT(attr->ia_atime) = obj->yst_atime;
+ valid |= ATTR_ATIME;
+ Y_TIME_CONVERT(attr->ia_ctime) = obj->yst_ctime;
+ valid |= ATTR_CTIME;
+ Y_TIME_CONVERT(attr->ia_mtime) = obj->yst_mtime;
+ valid |= ATTR_MTIME;
+
+ attr->ia_size = yaffs_get_file_size(obj);
+ valid |= ATTR_SIZE;
+
+ attr->ia_valid = valid;
+
+ return YAFFS_OK;
+}
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_attribs.h b/target/linux/generic/files/fs/yaffs2/yaffs_attribs.h
new file mode 100644
index 0000000..5b21b08
--- /dev/null
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_attribs.h
@@ -0,0 +1,28 @@
+/*
+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2011 Aleph One Ltd.
+ * for Toby Churchill Ltd and Brightstar Engineering
+ *
+ * Created by Charles Manning <charles@aleph1.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1 as
+ * published by the Free Software Foundation.
+ *
+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
+ */
+
+#ifndef __YAFFS_ATTRIBS_H__
+#define __YAFFS_ATTRIBS_H__
+
+#include "yaffs_guts.h"
+
+void yaffs_load_attribs(struct yaffs_obj *obj, struct yaffs_obj_hdr *oh);
+void yaffs_load_attribs_oh(struct yaffs_obj_hdr *oh, struct yaffs_obj *obj);
+void yaffs_attribs_init(struct yaffs_obj *obj, u32 gid, u32 uid, u32 rdev);
+void yaffs_load_current_time(struct yaffs_obj *obj, int do_a, int do_c);
+int yaffs_set_attribs(struct yaffs_obj *obj, struct iattr *attr);
+int yaffs_get_attribs(struct yaffs_obj *obj, struct iattr *attr);
+
+#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.c b/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.c
index 1769e9b..4440e93 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.c
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.c
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -17,89 +17,81 @@
* Chunk bitmap manipulations
*/
-static Y_INLINE __u8 *yaffs_BlockBits(yaffs_dev_t *dev, int blk)
+static inline u8 *yaffs_block_bits(struct yaffs_dev *dev, int blk)
{
if (blk < dev->internal_start_block || blk > dev->internal_end_block) {
- T(YAFFS_TRACE_ERROR,
- (TSTR("**>> yaffs: BlockBits block %d is not valid" TENDSTR),
- blk));
- YBUG();
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "BlockBits block %d is not valid",
+ blk);
+ BUG();
}
return dev->chunk_bits +
- (dev->chunk_bit_stride * (blk - dev->internal_start_block));
+ (dev->chunk_bit_stride * (blk - dev->internal_start_block));
}
-void yaffs_verify_chunk_bit_id(yaffs_dev_t *dev, int blk, int chunk)
+void yaffs_verify_chunk_bit_id(struct yaffs_dev *dev, int blk, int chunk)
{
if (blk < dev->internal_start_block || blk > dev->internal_end_block ||
- chunk < 0 || chunk >= dev->param.chunks_per_block) {
- T(YAFFS_TRACE_ERROR,
- (TSTR("**>> yaffs: Chunk Id (%d:%d) invalid"TENDSTR),
- blk, chunk));
- YBUG();
+ chunk < 0 || chunk >= dev->param.chunks_per_block) {
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "Chunk Id (%d:%d) invalid",
+ blk, chunk);
+ BUG();
}
}
-void yaffs_clear_chunk_bits(yaffs_dev_t *dev, int blk)
+void yaffs_clear_chunk_bits(struct yaffs_dev *dev, int blk)
{
- __u8 *blkBits = yaffs_BlockBits(dev, blk);
+ u8 *blk_bits = yaffs_block_bits(dev, blk);
- memset(blkBits, 0, dev->chunk_bit_stride);
+ memset(blk_bits, 0, dev->chunk_bit_stride);
}
-void yaffs_clear_chunk_bit(yaffs_dev_t *dev, int blk, int chunk)
+void yaffs_clear_chunk_bit(struct yaffs_dev *dev, int blk, int chunk)
{
- __u8 *blkBits = yaffs_BlockBits(dev, blk);
+ u8 *blk_bits = yaffs_block_bits(dev, blk);
yaffs_verify_chunk_bit_id(dev, blk, chunk);
-
- blkBits[chunk / 8] &= ~(1 << (chunk & 7));
+ blk_bits[chunk / 8] &= ~(1 << (chunk & 7));
}
-void yaffs_set_chunk_bit(yaffs_dev_t *dev, int blk, int chunk)
+void yaffs_set_chunk_bit(struct yaffs_dev *dev, int blk, int chunk)
{
- __u8 *blkBits = yaffs_BlockBits(dev, blk);
+ u8 *blk_bits = yaffs_block_bits(dev, blk);
yaffs_verify_chunk_bit_id(dev, blk, chunk);
-
- blkBits[chunk / 8] |= (1 << (chunk & 7));
+ blk_bits[chunk / 8] |= (1 << (chunk & 7));
}
-int yaffs_check_chunk_bit(yaffs_dev_t *dev, int blk, int chunk)
+int yaffs_check_chunk_bit(struct yaffs_dev *dev, int blk, int chunk)
{
- __u8 *blkBits = yaffs_BlockBits(dev, blk);
- yaffs_verify_chunk_bit_id(dev, blk, chunk);
+ u8 *blk_bits = yaffs_block_bits(dev, blk);
- return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0;
+ yaffs_verify_chunk_bit_id(dev, blk, chunk);
+ return (blk_bits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0;
}
-int yaffs_still_some_chunks(yaffs_dev_t *dev, int blk)
+int yaffs_still_some_chunks(struct yaffs_dev *dev, int blk)
{
- __u8 *blkBits = yaffs_BlockBits(dev, blk);
+ u8 *blk_bits = yaffs_block_bits(dev, blk);
int i;
+
for (i = 0; i < dev->chunk_bit_stride; i++) {
- if (*blkBits)
+ if (*blk_bits)
return 1;
- blkBits++;
+ blk_bits++;
}
return 0;
}
-int yaffs_count_chunk_bits(yaffs_dev_t *dev, int blk)
+int yaffs_count_chunk_bits(struct yaffs_dev *dev, int blk)
{
- __u8 *blkBits = yaffs_BlockBits(dev, blk);
+ u8 *blk_bits = yaffs_block_bits(dev, blk);
int i;
int n = 0;
- for (i = 0; i < dev->chunk_bit_stride; i++) {
- __u8 x = *blkBits;
- while (x) {
- if (x & 1)
- n++;
- x >>= 1;
- }
-
- blkBits++;
- }
+
+ for (i = 0; i < dev->chunk_bit_stride; i++, blk_bits++)
+ n += hweight8(*blk_bits);
+
return n;
}
-
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.h b/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.h
index c11ca2f..e26b37d 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.h
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_bitmap.h
@@ -1,14 +1,16 @@
/*
- * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
*
* This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
+ * it under the terms of the GNU Lesser General Public License version 2.1 as
* published by the Free Software Foundation.
+ *
+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
*/
/*
@@ -20,12 +22,12 @@
#include "yaffs_guts.h"
-void yaffs_verify_chunk_bit_id(yaffs_dev_t *dev, int blk, int chunk);
-void yaffs_clear_chunk_bits(yaffs_dev_t *dev, int blk);
-void yaffs_clear_chunk_bit(yaffs_dev_t *dev, int blk, int chunk);
-void yaffs_set_chunk_bit(yaffs_dev_t *dev, int blk, int chunk);
-int yaffs_check_chunk_bit(yaffs_dev_t *dev, int blk, int chunk);
-int yaffs_still_some_chunks(yaffs_dev_t *dev, int blk);
-int yaffs_count_chunk_bits(yaffs_dev_t *dev, int blk);
+void yaffs_verify_chunk_bit_id(struct yaffs_dev *dev, int blk, int chunk);
+void yaffs_clear_chunk_bits(struct yaffs_dev *dev, int blk);
+void yaffs_clear_chunk_bit(struct yaffs_dev *dev, int blk, int chunk);
+void yaffs_set_chunk_bit(struct yaffs_dev *dev, int blk, int chunk);
+int yaffs_check_chunk_bit(struct yaffs_dev *dev, int blk, int chunk);
+int yaffs_still_some_chunks(struct yaffs_dev *dev, int blk);
+int yaffs_count_chunk_bits(struct yaffs_dev *dev, int blk);
#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.c b/target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.c
index d46f563..e739fb4 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.c
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.c
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -14,40 +14,91 @@
#include "yaffs_checkptrw.h"
#include "yaffs_getblockinfo.h"
-static int yaffs2_checkpt_space_ok(yaffs_dev_t *dev)
+struct yaffs_checkpt_chunk_hdr {
+ int version;
+ int seq;
+ u32 sum;
+ u32 xor;
+} ;
+
+
+static int apply_chunk_offset(struct yaffs_dev *dev, int chunk)
+{
+ return chunk - dev->chunk_offset;
+}
+
+static int apply_block_offset(struct yaffs_dev *dev, int block)
+{
+ return block - dev->block_offset;
+}
+
+static void yaffs2_checkpt_init_chunk_hdr(struct yaffs_dev *dev)
+{
+ struct yaffs_checkpt_chunk_hdr hdr;
+
+ hdr.version = YAFFS_CHECKPOINT_VERSION;
+ hdr.seq = dev->checkpt_page_seq;
+ hdr.sum = dev->checkpt_sum;
+ hdr.xor = dev->checkpt_xor;
+
+ dev->checkpt_byte_offs = sizeof(hdr);
+
+ memcpy(dev->checkpt_buffer, &hdr, sizeof(hdr));
+}
+
+static int yaffs2_checkpt_check_chunk_hdr(struct yaffs_dev *dev)
{
- int blocksAvailable = dev->n_erased_blocks - dev->param.n_reserved_blocks;
+ struct yaffs_checkpt_chunk_hdr hdr;
+
+ memcpy(&hdr, dev->checkpt_buffer, sizeof(hdr));
- T(YAFFS_TRACE_CHECKPOINT,
- (TSTR("checkpt blocks available = %d" TENDSTR),
- blocksAvailable));
+ dev->checkpt_byte_offs = sizeof(hdr);
- return (blocksAvailable <= 0) ? 0 : 1;
+ return hdr.version == YAFFS_CHECKPOINT_VERSION &&
+ hdr.seq == dev->checkpt_page_seq &&
+ hdr.sum == dev->checkpt_sum &&
+ hdr.xor == dev->checkpt_xor;
}
+static int yaffs2_checkpt_space_ok(struct yaffs_dev *dev)
+{
+ int blocks_avail = dev->n_erased_blocks - dev->param.n_reserved_blocks;
+
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "checkpt blocks_avail = %d", blocks_avail);
-static int yaffs_checkpt_erase(yaffs_dev_t *dev)
+ return (blocks_avail <= 0) ? 0 : 1;
+}
+
+static int yaffs_checkpt_erase(struct yaffs_dev *dev)
{
int i;
- if (!dev->param.erase_fn)
+ if (!dev->drv.drv_erase_fn)
return 0;
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("checking blocks %d to %d"TENDSTR),
- dev->internal_start_block, dev->internal_end_block));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "checking blocks %d to %d",
+ dev->internal_start_block, dev->internal_end_block);
for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) {
- yaffs_block_info_t *bi = yaffs_get_block_info(dev, i);
+ struct yaffs_block_info *bi = yaffs_get_block_info(dev, i);
+ int offset_i = apply_block_offset(dev, i);
+ int result;
+
if (bi->block_state == YAFFS_BLOCK_STATE_CHECKPOINT) {
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("erasing checkpt block %d"TENDSTR), i));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "erasing checkpt block %d", i);
dev->n_erasures++;
- if (dev->param.erase_fn(dev, i - dev->block_offset /* realign */)) {
+ result = dev->drv.drv_erase_fn(dev, offset_i);
+ if(result) {
bi->block_state = YAFFS_BLOCK_STATE_EMPTY;
dev->n_erased_blocks++;
- dev->n_free_chunks += dev->param.chunks_per_block;
+ dev->n_free_chunks +=
+ dev->param.chunks_per_block;
} else {
- dev->param.bad_block_fn(dev, i);
+ dev->drv.drv_mark_bad_fn(dev, offset_i);
bi->block_state = YAFFS_BLOCK_STATE_DEAD;
}
}
@@ -58,93 +109,112 @@ static int yaffs_checkpt_erase(yaffs_dev_t *dev)
return 1;
}
-
-static void yaffs2_checkpt_find_erased_block(yaffs_dev_t *dev)
+static void yaffs2_checkpt_find_erased_block(struct yaffs_dev *dev)
{
- int i;
- int blocksAvailable = dev->n_erased_blocks - dev->param.n_reserved_blocks;
- T(YAFFS_TRACE_CHECKPOINT,
- (TSTR("allocating checkpt block: erased %d reserved %d avail %d next %d "TENDSTR),
- dev->n_erased_blocks, dev->param.n_reserved_blocks, blocksAvailable, dev->checkpt_next_block));
+ int i;
+ int blocks_avail = dev->n_erased_blocks - dev->param.n_reserved_blocks;
+
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "allocating checkpt block: erased %d reserved %d avail %d next %d ",
+ dev->n_erased_blocks, dev->param.n_reserved_blocks,
+ blocks_avail, dev->checkpt_next_block);
if (dev->checkpt_next_block >= 0 &&
- dev->checkpt_next_block <= dev->internal_end_block &&
- blocksAvailable > 0) {
+ dev->checkpt_next_block <= dev->internal_end_block &&
+ blocks_avail > 0) {
- for (i = dev->checkpt_next_block; i <= dev->internal_end_block; i++) {
- yaffs_block_info_t *bi = yaffs_get_block_info(dev, i);
+ for (i = dev->checkpt_next_block; i <= dev->internal_end_block;
+ i++) {
+ struct yaffs_block_info *bi;
+
+ bi = yaffs_get_block_info(dev, i);
if (bi->block_state == YAFFS_BLOCK_STATE_EMPTY) {
dev->checkpt_next_block = i + 1;
dev->checkpt_cur_block = i;
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("allocating checkpt block %d"TENDSTR), i));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "allocating checkpt block %d", i);
return;
}
}
}
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("out of checkpt blocks"TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT, "out of checkpt blocks");
dev->checkpt_next_block = -1;
dev->checkpt_cur_block = -1;
}
-static void yaffs2_checkpt_find_block(yaffs_dev_t *dev)
+static void yaffs2_checkpt_find_block(struct yaffs_dev *dev)
{
- int i;
- yaffs_ext_tags tags;
+ int i;
+ struct yaffs_ext_tags tags;
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: start: blocks %d next %d" TENDSTR),
- dev->blocks_in_checkpt, dev->checkpt_next_block));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "find next checkpt block: start: blocks %d next %d",
+ dev->blocks_in_checkpt, dev->checkpt_next_block);
if (dev->blocks_in_checkpt < dev->checkpt_max_blocks)
- for (i = dev->checkpt_next_block; i <= dev->internal_end_block; i++) {
+ for (i = dev->checkpt_next_block; i <= dev->internal_end_block;
+ i++) {
int chunk = i * dev->param.chunks_per_block;
- int realignedChunk = chunk - dev->chunk_offset;
+ enum yaffs_block_state state;
+ u32 seq;
- dev->param.read_chunk_tags_fn(dev, realignedChunk,
+ dev->tagger.read_chunk_tags_fn(dev,
+ apply_chunk_offset(dev, chunk),
NULL, &tags);
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("find next checkpt block: search: block %d oid %d seq %d eccr %d" TENDSTR),
- i, tags.obj_id, tags.seq_number, tags.ecc_result));
-
- if (tags.seq_number == YAFFS_SEQUENCE_CHECKPOINT_DATA) {
- /* Right kind of block */
- dev->checkpt_next_block = tags.obj_id;
- dev->checkpt_cur_block = i;
- dev->checkpt_block_list[dev->blocks_in_checkpt] = i;
- dev->blocks_in_checkpt++;
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("found checkpt block %d"TENDSTR), i));
- return;
- }
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "find next checkpt block: search: block %d state %d oid %d seq %d eccr %d",
+ i, (int) state,
+ tags.obj_id, tags.seq_number,
+ tags.ecc_result);
+
+ if (tags.seq_number != YAFFS_SEQUENCE_CHECKPOINT_DATA)
+ continue;
+
+ dev->tagger.query_block_fn(dev,
+ apply_block_offset(dev, i),
+ &state, &seq);
+ if (state == YAFFS_BLOCK_STATE_DEAD)
+ continue;
+
+ /* Right kind of block */
+ dev->checkpt_next_block = tags.obj_id;
+ dev->checkpt_cur_block = i;
+ dev->checkpt_block_list[dev->blocks_in_checkpt] = i;
+ dev->blocks_in_checkpt++;
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "found checkpt block %d", i);
+ return;
}
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("found no more checkpt blocks"TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT, "found no more checkpt blocks");
dev->checkpt_next_block = -1;
dev->checkpt_cur_block = -1;
}
-
-int yaffs2_checkpt_open(yaffs_dev_t *dev, int forWriting)
+int yaffs2_checkpt_open(struct yaffs_dev *dev, int writing)
{
+ int i;
-
- dev->checkpt_open_write = forWriting;
+ dev->checkpt_open_write = writing;
/* Got the functions we need? */
- if (!dev->param.write_chunk_tags_fn ||
- !dev->param.read_chunk_tags_fn ||
- !dev->param.erase_fn ||
- !dev->param.bad_block_fn)
+ if (!dev->tagger.write_chunk_tags_fn ||
+ !dev->tagger.read_chunk_tags_fn ||
+ !dev->drv.drv_erase_fn ||
+ !dev->drv.drv_mark_bad_fn)
return 0;
- if (forWriting && !yaffs2_checkpt_space_ok(dev))
+ if (writing && !yaffs2_checkpt_space_ok(dev))
return 0;
if (!dev->checkpt_buffer)
- dev->checkpt_buffer = YMALLOC_DMA(dev->param.total_bytes_per_chunk);
+ dev->checkpt_buffer =
+ kmalloc(dev->param.total_bytes_per_chunk, GFP_NOFS);
if (!dev->checkpt_buffer)
return 0;
-
dev->checkpt_page_seq = 0;
dev->checkpt_byte_count = 0;
dev->checkpt_sum = 0;
@@ -153,44 +223,46 @@ int yaffs2_checkpt_open(yaffs_dev_t *dev, int forWriting)
dev->checkpt_cur_chunk = -1;
dev->checkpt_next_block = dev->internal_start_block;
- /* Erase all the blocks in the checkpoint area */
- if (forWriting) {
+ if (writing) {
memset(dev->checkpt_buffer, 0, dev->data_bytes_per_chunk);
- dev->checkpt_byte_offs = 0;
+ yaffs2_checkpt_init_chunk_hdr(dev);
return yaffs_checkpt_erase(dev);
- } else {
- int i;
- /* Set to a value that will kick off a read */
- dev->checkpt_byte_offs = dev->data_bytes_per_chunk;
- /* A checkpoint block list of 1 checkpoint block per 16 block is (hopefully)
- * going to be way more than we need */
- dev->blocks_in_checkpt = 0;
- dev->checkpt_max_blocks = (dev->internal_end_block - dev->internal_start_block)/16 + 2;
- dev->checkpt_block_list = YMALLOC(sizeof(int) * dev->checkpt_max_blocks);
- if(!dev->checkpt_block_list)
- return 0;
-
- for (i = 0; i < dev->checkpt_max_blocks; i++)
- dev->checkpt_block_list[i] = -1;
}
+ /* Opening for a read */
+ /* Set to a value that will kick off a read */
+ dev->checkpt_byte_offs = dev->data_bytes_per_chunk;
+ /* A checkpoint block list of 1 checkpoint block per 16 block is
+ * (hopefully) going to be way more than we need */
+ dev->blocks_in_checkpt = 0;
+ dev->checkpt_max_blocks =
+ (dev->internal_end_block - dev->internal_start_block) / 16 + 2;
+ dev->checkpt_block_list =
+ kmalloc(sizeof(int) * dev->checkpt_max_blocks, GFP_NOFS);
+
+ if (!dev->checkpt_block_list)
+ return 0;
+
+ for (i = 0; i < dev->checkpt_max_blocks; i++)
+ dev->checkpt_block_list[i] = -1;
+
return 1;
}
-int yaffs2_get_checkpt_sum(yaffs_dev_t *dev, __u32 *sum)
+int yaffs2_get_checkpt_sum(struct yaffs_dev *dev, u32 * sum)
{
- __u32 compositeSum;
- compositeSum = (dev->checkpt_sum << 8) | (dev->checkpt_xor & 0xFF);
- *sum = compositeSum;
+ u32 composite_sum;
+
+ composite_sum = (dev->checkpt_sum << 8) | (dev->checkpt_xor & 0xff);
+ *sum = composite_sum;
return 1;
}
-static int yaffs2_checkpt_flush_buffer(yaffs_dev_t *dev)
+static int yaffs2_checkpt_flush_buffer(struct yaffs_dev *dev)
{
int chunk;
- int realignedChunk;
-
- yaffs_ext_tags tags;
+ int offset_chunk;
+ struct yaffs_ext_tags tags;
if (dev->checkpt_cur_block < 0) {
yaffs2_checkpt_find_erased_block(dev);
@@ -201,31 +273,34 @@ static int yaffs2_checkpt_flush_buffer(yaffs_dev_t *dev)
return 0;
tags.is_deleted = 0;
- tags.obj_id = dev->checkpt_next_block; /* Hint to next place to look */
+ tags.obj_id = dev->checkpt_next_block; /* Hint to next place to look */
tags.chunk_id = dev->checkpt_page_seq + 1;
- tags.seq_number = YAFFS_SEQUENCE_CHECKPOINT_DATA;
+ tags.seq_number = YAFFS_SEQUENCE_CHECKPOINT_DATA;
tags.n_bytes = dev->data_bytes_per_chunk;
if (dev->checkpt_cur_chunk == 0) {
/* First chunk we write for the block? Set block state to
checkpoint */
- yaffs_block_info_t *bi = yaffs_get_block_info(dev, dev->checkpt_cur_block);
+ struct yaffs_block_info *bi =
+ yaffs_get_block_info(dev, dev->checkpt_cur_block);
bi->block_state = YAFFS_BLOCK_STATE_CHECKPOINT;
dev->blocks_in_checkpt++;
}
- chunk = dev->checkpt_cur_block * dev->param.chunks_per_block + dev->checkpt_cur_chunk;
-
+ chunk =
+ dev->checkpt_cur_block * dev->param.chunks_per_block +
+ dev->checkpt_cur_chunk;
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint wite buffer nand %d(%d:%d) objid %d chId %d" TENDSTR),
- chunk, dev->checkpt_cur_block, dev->checkpt_cur_chunk, tags.obj_id, tags.chunk_id));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "checkpoint wite buffer nand %d(%d:%d) objid %d chId %d",
+ chunk, dev->checkpt_cur_block, dev->checkpt_cur_chunk,
+ tags.obj_id, tags.chunk_id);
- realignedChunk = chunk - dev->chunk_offset;
+ offset_chunk = apply_chunk_offset(dev, chunk);
dev->n_page_writes++;
- dev->param.write_chunk_tags_fn(dev, realignedChunk,
- dev->checkpt_buffer, &tags);
- dev->checkpt_byte_offs = 0;
+ dev->tagger.write_chunk_tags_fn(dev, offset_chunk,
+ dev->checkpt_buffer, &tags);
dev->checkpt_page_seq++;
dev->checkpt_cur_chunk++;
if (dev->checkpt_cur_chunk >= dev->param.chunks_per_block) {
@@ -234,19 +309,17 @@ static int yaffs2_checkpt_flush_buffer(yaffs_dev_t *dev)
}
memset(dev->checkpt_buffer, 0, dev->data_bytes_per_chunk);
+ yaffs2_checkpt_init_chunk_hdr(dev);
+
+
return 1;
}
-
-int yaffs2_checkpt_wr(yaffs_dev_t *dev, const void *data, int n_bytes)
+int yaffs2_checkpt_wr(struct yaffs_dev *dev, const void *data, int n_bytes)
{
int i = 0;
int ok = 1;
-
-
- __u8 * dataBytes = (__u8 *)data;
-
-
+ u8 *data_bytes = (u8 *) data;
if (!dev->checkpt_buffer)
return 0;
@@ -255,35 +328,31 @@ int yaffs2_checkpt_wr(yaffs_dev_t *dev, const void *data, int n_bytes)
return -1;
while (i < n_bytes && ok) {
- dev->checkpt_buffer[dev->checkpt_byte_offs] = *dataBytes;
- dev->checkpt_sum += *dataBytes;
- dev->checkpt_xor ^= *dataBytes;
+ dev->checkpt_buffer[dev->checkpt_byte_offs] = *data_bytes;
+ dev->checkpt_sum += *data_bytes;
+ dev->checkpt_xor ^= *data_bytes;
dev->checkpt_byte_offs++;
i++;
- dataBytes++;
+ data_bytes++;
dev->checkpt_byte_count++;
-
if (dev->checkpt_byte_offs < 0 ||
- dev->checkpt_byte_offs >= dev->data_bytes_per_chunk)
+ dev->checkpt_byte_offs >= dev->data_bytes_per_chunk)
ok = yaffs2_checkpt_flush_buffer(dev);
}
return i;
}
-int yaffs2_checkpt_rd(yaffs_dev_t *dev, void *data, int n_bytes)
+int yaffs2_checkpt_rd(struct yaffs_dev *dev, void *data, int n_bytes)
{
int i = 0;
int ok = 1;
- yaffs_ext_tags tags;
-
-
+ struct yaffs_ext_tags tags;
int chunk;
- int realignedChunk;
-
- __u8 *dataBytes = (__u8 *)data;
+ int offset_chunk;
+ u8 *data_bytes = (u8 *) data;
if (!dev->checkpt_buffer)
return 0;
@@ -293,109 +362,113 @@ int yaffs2_checkpt_rd(yaffs_dev_t *dev, void *data, int n_bytes)
while (i < n_bytes && ok) {
-
if (dev->checkpt_byte_offs < 0 ||
- dev->checkpt_byte_offs >= dev->data_bytes_per_chunk) {
+ dev->checkpt_byte_offs >= dev->data_bytes_per_chunk) {
if (dev->checkpt_cur_block < 0) {
yaffs2_checkpt_find_block(dev);
dev->checkpt_cur_chunk = 0;
}
- if (dev->checkpt_cur_block < 0)
+ if (dev->checkpt_cur_block < 0) {
ok = 0;
- else {
- chunk = dev->checkpt_cur_block *
- dev->param.chunks_per_block +
- dev->checkpt_cur_chunk;
-
- realignedChunk = chunk - dev->chunk_offset;
-
- dev->n_page_reads++;
-
- /* read in the next chunk */
- /* printf("read checkpoint page %d\n",dev->checkpointPage); */
- dev->param.read_chunk_tags_fn(dev,
- realignedChunk,
+ break;
+ }
+
+ chunk = dev->checkpt_cur_block *
+ dev->param.chunks_per_block +
+ dev->checkpt_cur_chunk;
+
+ offset_chunk = apply_chunk_offset(dev, chunk);
+ dev->n_page_reads++;
+
+ /* read in the next chunk */
+ dev->tagger.read_chunk_tags_fn(dev,
+ offset_chunk,
dev->checkpt_buffer,
&tags);
- if (tags.chunk_id != (dev->checkpt_page_seq + 1) ||
- tags.ecc_result > YAFFS_ECC_RESULT_FIXED ||
- tags.seq_number != YAFFS_SEQUENCE_CHECKPOINT_DATA)
- ok = 0;
+ if (tags.chunk_id != (dev->checkpt_page_seq + 1) ||
+ tags.ecc_result > YAFFS_ECC_RESULT_FIXED ||
+ tags.seq_number != YAFFS_SEQUENCE_CHECKPOINT_DATA) {
+ ok = 0;
+ break;
+ }
+ if(!yaffs2_checkpt_check_chunk_hdr(dev)) {
+ ok = 0;
+ break;
+ }
- dev->checkpt_byte_offs = 0;
- dev->checkpt_page_seq++;
- dev->checkpt_cur_chunk++;
+ dev->checkpt_page_seq++;
+ dev->checkpt_cur_chunk++;
- if (dev->checkpt_cur_chunk >= dev->param.chunks_per_block)
- dev->checkpt_cur_block = -1;
- }
- }
+ if (dev->checkpt_cur_chunk >=
+ dev->param.chunks_per_block)
+ dev->checkpt_cur_block = -1;
- if (ok) {
- *dataBytes = dev->checkpt_buffer[dev->checkpt_byte_offs];
- dev->checkpt_sum += *dataBytes;
- dev->checkpt_xor ^= *dataBytes;
- dev->checkpt_byte_offs++;
- i++;
- dataBytes++;
- dev->checkpt_byte_count++;
}
+
+ *data_bytes = dev->checkpt_buffer[dev->checkpt_byte_offs];
+ dev->checkpt_sum += *data_bytes;
+ dev->checkpt_xor ^= *data_bytes;
+ dev->checkpt_byte_offs++;
+ i++;
+ data_bytes++;
+ dev->checkpt_byte_count++;
}
- return i;
+ return i;
}
-int yaffs_checkpt_close(yaffs_dev_t *dev)
+int yaffs_checkpt_close(struct yaffs_dev *dev)
{
+ int i;
if (dev->checkpt_open_write) {
- if (dev->checkpt_byte_offs != 0)
+ if (dev->checkpt_byte_offs !=
+ sizeof(sizeof(struct yaffs_checkpt_chunk_hdr)))
yaffs2_checkpt_flush_buffer(dev);
- } else if(dev->checkpt_block_list){
- int i;
- for (i = 0; i < dev->blocks_in_checkpt && dev->checkpt_block_list[i] >= 0; i++) {
+ } else if (dev->checkpt_block_list) {
+ for (i = 0;
+ i < dev->blocks_in_checkpt &&
+ dev->checkpt_block_list[i] >= 0; i++) {
int blk = dev->checkpt_block_list[i];
- yaffs_block_info_t *bi = NULL;
- if( dev->internal_start_block <= blk && blk <= dev->internal_end_block)
+ struct yaffs_block_info *bi = NULL;
+
+ if (dev->internal_start_block <= blk &&
+ blk <= dev->internal_end_block)
bi = yaffs_get_block_info(dev, blk);
if (bi && bi->block_state == YAFFS_BLOCK_STATE_EMPTY)
bi->block_state = YAFFS_BLOCK_STATE_CHECKPOINT;
- else {
- /* Todo this looks odd... */
- }
}
- YFREE(dev->checkpt_block_list);
+ kfree(dev->checkpt_block_list);
dev->checkpt_block_list = NULL;
}
- dev->n_free_chunks -= dev->blocks_in_checkpt * dev->param.chunks_per_block;
+ dev->n_free_chunks -=
+ dev->blocks_in_checkpt * dev->param.chunks_per_block;
dev->n_erased_blocks -= dev->blocks_in_checkpt;
-
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint byte count %d" TENDSTR),
- dev->checkpt_byte_count));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT, "checkpoint byte count %d",
+ dev->checkpt_byte_count);
if (dev->checkpt_buffer) {
/* free the buffer */
- YFREE(dev->checkpt_buffer);
+ kfree(dev->checkpt_buffer);
dev->checkpt_buffer = NULL;
return 1;
- } else
+ } else {
return 0;
+ }
}
-int yaffs2_checkpt_invalidate_stream(yaffs_dev_t *dev)
+int yaffs2_checkpt_invalidate_stream(struct yaffs_dev *dev)
{
/* Erase the checkpoint data */
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("checkpoint invalidate of %d blocks"TENDSTR),
- dev->blocks_in_checkpt));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "checkpoint invalidate of %d blocks",
+ dev->blocks_in_checkpt);
return yaffs_checkpt_erase(dev);
}
-
-
-
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.h b/target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.h
index 059ba9e..cdbaba7 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.h
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_checkptrw.h
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet another Flash File System . A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -18,17 +18,16 @@
#include "yaffs_guts.h"
-int yaffs2_checkpt_open(yaffs_dev_t *dev, int forWriting);
+int yaffs2_checkpt_open(struct yaffs_dev *dev, int writing);
-int yaffs2_checkpt_wr(yaffs_dev_t *dev, const void *data, int n_bytes);
+int yaffs2_checkpt_wr(struct yaffs_dev *dev, const void *data, int n_bytes);
-int yaffs2_checkpt_rd(yaffs_dev_t *dev, void *data, int n_bytes);
+int yaffs2_checkpt_rd(struct yaffs_dev *dev, void *data, int n_bytes);
-int yaffs2_get_checkpt_sum(yaffs_dev_t *dev, __u32 *sum);
+int yaffs2_get_checkpt_sum(struct yaffs_dev *dev, u32 * sum);
-int yaffs_checkpt_close(yaffs_dev_t *dev);
-
-int yaffs2_checkpt_invalidate_stream(yaffs_dev_t *dev);
+int yaffs_checkpt_close(struct yaffs_dev *dev);
+int yaffs2_checkpt_invalidate_stream(struct yaffs_dev *dev);
#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_ecc.c b/target/linux/generic/files/fs/yaffs2/yaffs_ecc.c
index 4030908..9294107 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_ecc.c
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_ecc.c
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -16,22 +16,22 @@
*
* The ECC comprises 22 bits of parity information and is stuffed into 3 bytes.
* The two unused bit are set to 1.
- * The ECC can correct single bit errors in a 256-byte page of data. Thus, two such ECC
- * blocks are used on a 512-byte NAND page.
+ * The ECC can correct single bit errors in a 256-byte page of data. Thus, two
+ * such ECC blocks are used on a 512-byte NAND page.
*
*/
+#include "yportenv.h"
+
+#include "yaffs_ecc.h"
+
/* Table generated by gen-ecc.c
* Using a table means we do not have to calculate p1..p4 and p1'..p4'
* for each byte of data. These are instead provided in a table in bits7..2.
- * Bit 0 of each entry indicates whether the entry has an odd or even parity, and therefore
- * this bytes influence on the line parity.
+ * Bit 0 of each entry indicates whether the entry has an odd or even parity,
+ * and therefore this bytes influence on the line parity.
*/
-#include "yportenv.h"
-
-#include "yaffs_ecc.h"
-
static const unsigned char column_parity_table[] = {
0x00, 0x55, 0x59, 0x0c, 0x65, 0x30, 0x3c, 0x69,
0x69, 0x3c, 0x30, 0x65, 0x0c, 0x59, 0x55, 0x00,
@@ -67,35 +67,11 @@ static const unsigned char column_parity_table[] = {
0x69, 0x3c, 0x30, 0x65, 0x0c, 0x59, 0x55, 0x00,
};
-/* Count the bits in an unsigned char or a U32 */
-
-static int yaffs_count_bits(unsigned char x)
-{
- int r = 0;
- while (x) {
- if (x & 1)
- r++;
- x >>= 1;
- }
- return r;
-}
-
-static int yaffs_count_bits32(unsigned x)
-{
- int r = 0;
- while (x) {
- if (x & 1)
- r++;
- x >>= 1;
- }
- return r;
-}
/* Calculate the ECC for a 256-byte block of data */
-void yaffs_ecc_cacl(const unsigned char *data, unsigned char *ecc)
+void yaffs_ecc_calc(const unsigned char *data, unsigned char *ecc)
{
unsigned int i;
-
unsigned char col_parity = 0;
unsigned char line_parity = 0;
unsigned char line_parity_prime = 0;
@@ -106,7 +82,7 @@ void yaffs_ecc_cacl(const unsigned char *data, unsigned char *ecc)
b = column_parity_table[*data++];
col_parity ^= b;
- if (b & 0x01) { /* odd number of bits in the byte */
+ if (b & 0x01) { /* odd number of bits in the byte */
line_parity ^= i;
line_parity_prime ^= ~i;
}
@@ -152,19 +128,12 @@ void yaffs_ecc_cacl(const unsigned char *data, unsigned char *ecc)
t |= 0x01;
ecc[0] = ~t;
-#ifdef CONFIG_YAFFS_ECC_WRONG_ORDER
- /* Swap the bytes into the wrong order */
- t = ecc[0];
- ecc[0] = ecc[1];
- ecc[1] = t;
-#endif
}
-
/* Correct the ECC on a 256 byte block of data */
int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc,
- const unsigned char *test_ecc)
+ const unsigned char *test_ecc)
{
unsigned char d0, d1, d2; /* deltas */
@@ -173,7 +142,7 @@ int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc,
d2 = read_ecc[2] ^ test_ecc[2];
if ((d0 | d1 | d2) == 0)
- return 0; /* no error */
+ return 0; /* no error */
if (((d0 ^ (d0 >> 1)) & 0x55) == 0x55 &&
((d1 ^ (d1 >> 1)) & 0x55) == 0x55 &&
@@ -183,15 +152,6 @@ int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc,
unsigned byte;
unsigned bit;
-#ifdef CONFIG_YAFFS_ECC_WRONG_ORDER
- /* swap the bytes to correct for the wrong order */
- unsigned char t;
-
- t = d0;
- d0 = d1;
- d1 = t;
-#endif
-
bit = byte = 0;
if (d1 & 0x80)
@@ -220,19 +180,17 @@ int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc,
data[byte] ^= (1 << bit);
- return 1; /* Corrected the error */
+ return 1; /* Corrected the error */
}
- if ((yaffs_count_bits(d0) +
- yaffs_count_bits(d1) +
- yaffs_count_bits(d2)) == 1) {
+ if ((hweight8(d0) + hweight8(d1) + hweight8(d2)) == 1) {
/* Reccoverable error in ecc */
read_ecc[0] = test_ecc[0];
read_ecc[1] = test_ecc[1];
read_ecc[2] = test_ecc[2];
- return 1; /* Corrected the error */
+ return 1; /* Corrected the error */
}
/* Unrecoverable error */
@@ -241,15 +199,13 @@ int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc,
}
-
/*
* ECCxxxOther does ECC calcs on arbitrary n bytes of data
*/
void yaffs_ecc_calc_other(const unsigned char *data, unsigned n_bytes,
- yaffs_ECCOther *eccOther)
+ struct yaffs_ecc_other *ecc_other)
{
unsigned int i;
-
unsigned char col_parity = 0;
unsigned line_parity = 0;
unsigned line_parity_prime = 0;
@@ -259,7 +215,7 @@ void yaffs_ecc_calc_other(const unsigned char *data, unsigned n_bytes,
b = column_parity_table[*data++];
col_parity ^= b;
- if (b & 0x01) {
+ if (b & 0x01) {
/* odd number of bits in the byte */
line_parity ^= i;
line_parity_prime ^= ~i;
@@ -267,54 +223,56 @@ void yaffs_ecc_calc_other(const unsigned char *data, unsigned n_bytes,
}
- eccOther->colParity = (col_parity >> 2) & 0x3f;
- eccOther->lineParity = line_parity;
- eccOther->lineParityPrime = line_parity_prime;
+ ecc_other->col_parity = (col_parity >> 2) & 0x3f;
+ ecc_other->line_parity = line_parity;
+ ecc_other->line_parity_prime = line_parity_prime;
}
int yaffs_ecc_correct_other(unsigned char *data, unsigned n_bytes,
- yaffs_ECCOther *read_ecc,
- const yaffs_ECCOther *test_ecc)
+ struct yaffs_ecc_other *read_ecc,
+ const struct yaffs_ecc_other *test_ecc)
{
- unsigned char cDelta; /* column parity delta */
- unsigned lDelta; /* line parity delta */
- unsigned lDeltaPrime; /* line parity delta */
+ unsigned char delta_col; /* column parity delta */
+ unsigned delta_line; /* line parity delta */
+ unsigned delta_line_prime; /* line parity delta */
unsigned bit;
- cDelta = read_ecc->colParity ^ test_ecc->colParity;
- lDelta = read_ecc->lineParity ^ test_ecc->lineParity;
- lDeltaPrime = read_ecc->lineParityPrime ^ test_ecc->lineParityPrime;
+ delta_col = read_ecc->col_parity ^ test_ecc->col_parity;
+ delta_line = read_ecc->line_parity ^ test_ecc->line_parity;
+ delta_line_prime =
+ read_ecc->line_parity_prime ^ test_ecc->line_parity_prime;
- if ((cDelta | lDelta | lDeltaPrime) == 0)
- return 0; /* no error */
+ if ((delta_col | delta_line | delta_line_prime) == 0)
+ return 0; /* no error */
- if (lDelta == ~lDeltaPrime &&
- (((cDelta ^ (cDelta >> 1)) & 0x15) == 0x15)) {
+ if (delta_line == ~delta_line_prime &&
+ (((delta_col ^ (delta_col >> 1)) & 0x15) == 0x15)) {
/* Single bit (recoverable) error in data */
bit = 0;
- if (cDelta & 0x20)
+ if (delta_col & 0x20)
bit |= 0x04;
- if (cDelta & 0x08)
+ if (delta_col & 0x08)
bit |= 0x02;
- if (cDelta & 0x02)
+ if (delta_col & 0x02)
bit |= 0x01;
- if (lDelta >= n_bytes)
+ if (delta_line >= n_bytes)
return -1;
- data[lDelta] ^= (1 << bit);
+ data[delta_line] ^= (1 << bit);
- return 1; /* corrected */
+ return 1; /* corrected */
}
- if ((yaffs_count_bits32(lDelta) + yaffs_count_bits32(lDeltaPrime) +
- yaffs_count_bits(cDelta)) == 1) {
+ if ((hweight32(delta_line) +
+ hweight32(delta_line_prime) +
+ hweight8(delta_col)) == 1) {
/* Reccoverable error in ecc */
*read_ecc = *test_ecc;
- return 1; /* corrected */
+ return 1; /* corrected */
}
/* Unrecoverable error */
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_ecc.h b/target/linux/generic/files/fs/yaffs2/yaffs_ecc.h
index 124e5a0..17d47bd 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_ecc.h
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_ecc.h
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet another Flash File System . A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -18,27 +18,27 @@
*
* The ECC comprises 22 bits of parity information and is stuffed into 3 bytes.
* The two unused bit are set to 1.
- * The ECC can correct single bit errors in a 256-byte page of data. Thus, two such ECC
- * blocks are used on a 512-byte NAND page.
+ * The ECC can correct single bit errors in a 256-byte page of data.
+ * Thus, two such ECC blocks are used on a 512-byte NAND page.
*
*/
#ifndef __YAFFS_ECC_H__
#define __YAFFS_ECC_H__
-typedef struct {
- unsigned char colParity;
- unsigned lineParity;
- unsigned lineParityPrime;
-} yaffs_ECCOther;
+struct yaffs_ecc_other {
+ unsigned char col_parity;
+ unsigned line_parity;
+ unsigned line_parity_prime;
+};
-void yaffs_ecc_cacl(const unsigned char *data, unsigned char *ecc);
+void yaffs_ecc_calc(const unsigned char *data, unsigned char *ecc);
int yaffs_ecc_correct(unsigned char *data, unsigned char *read_ecc,
- const unsigned char *test_ecc);
+ const unsigned char *test_ecc);
void yaffs_ecc_calc_other(const unsigned char *data, unsigned n_bytes,
- yaffs_ECCOther *ecc);
+ struct yaffs_ecc_other *ecc);
int yaffs_ecc_correct_other(unsigned char *data, unsigned n_bytes,
- yaffs_ECCOther *read_ecc,
- const yaffs_ECCOther *test_ecc);
+ struct yaffs_ecc_other *read_ecc,
+ const struct yaffs_ecc_other *test_ecc);
#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_getblockinfo.h b/target/linux/generic/files/fs/yaffs2/yaffs_getblockinfo.h
index 432441b..8fd0802 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_getblockinfo.h
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_getblockinfo.h
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet another Flash File System . A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -20,14 +20,14 @@
#include "yaffs_trace.h"
/* Function to manipulate block info */
-static Y_INLINE yaffs_block_info_t *yaffs_get_block_info(yaffs_dev_t * dev, int blk)
+static inline struct yaffs_block_info *yaffs_get_block_info(struct yaffs_dev
+ *dev, int blk)
{
if (blk < dev->internal_start_block || blk > dev->internal_end_block) {
- T(YAFFS_TRACE_ERROR,
- (TSTR
- ("**>> yaffs: getBlockInfo block %d is not valid" TENDSTR),
- blk));
- YBUG();
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "**>> yaffs: get_block_info block %d is not valid",
+ blk);
+ BUG();
}
return &dev->block_info[blk - dev->internal_start_block];
}
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_guts.c b/target/linux/generic/files/fs/yaffs2/yaffs_guts.c
index 36e11f5..1fd464d 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_guts.c
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_guts.c
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -10,28 +10,25 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
+
#include "yportenv.h"
#include "yaffs_trace.h"
-#include "yaffsinterface.h"
#include "yaffs_guts.h"
-#include "yaffs_tagsvalidity.h"
#include "yaffs_getblockinfo.h"
-
#include "yaffs_tagscompat.h"
-
+#include "yaffs_tagsmarshall.h"
#include "yaffs_nand.h"
-
#include "yaffs_yaffs1.h"
#include "yaffs_yaffs2.h"
#include "yaffs_bitmap.h"
#include "yaffs_verify.h"
-
#include "yaffs_nand.h"
#include "yaffs_packedtags2.h"
-
#include "yaffs_nameval.h"
#include "yaffs_allocator.h"
+#include "yaffs_attribs.h"
+#include "yaffs_summary.h"
/* Note YAFFS_GC_GOOD_ENOUGH must be <= YAFFS_GC_PASSIVE_THRESHOLD */
#define YAFFS_GC_GOOD_ENOUGH 2
@@ -39,94 +36,40 @@
#include "yaffs_ecc.h"
+/* Forward declarations */
+static int yaffs_wr_data_obj(struct yaffs_obj *in, int inode_chunk,
+ const u8 *buffer, int n_bytes, int use_reserve);
-/* Robustification (if it ever comes about...) */
-static void yaffs_retire_block(yaffs_dev_t *dev, int flash_block);
-static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk,
- int erasedOk);
-static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk,
- const __u8 *data,
- const yaffs_ext_tags *tags);
-static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk,
- const yaffs_ext_tags *tags);
-
-/* Other local prototypes */
-static void yaffs_update_parent(yaffs_obj_t *obj);
-static int yaffs_unlink_obj(yaffs_obj_t *obj);
-static int yaffs_obj_cache_dirty(yaffs_obj_t *obj);
-
-static int yaffs_write_new_chunk(yaffs_dev_t *dev,
- const __u8 *buffer,
- yaffs_ext_tags *tags,
- int useReserve);
-
-
-static yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number,
- yaffs_obj_type type);
-
-
-static int yaffs_apply_xattrib_mod(yaffs_obj_t *obj, char *buffer, yaffs_xattr_mod *xmod);
-
-static void yaffs_remove_obj_from_dir(yaffs_obj_t *obj);
-static int yaffs_check_structures(void);
-static int yaffs_generic_obj_del(yaffs_obj_t *in);
-
-static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev,
- int nand_chunk);
-
-static int yaffs_unlink_worker(yaffs_obj_t *obj);
-
-static int yaffs_tags_match(const yaffs_ext_tags *tags, int obj_id,
- int chunkInObject);
-
-static int yaffs_alloc_chunk(yaffs_dev_t *dev, int useReserve,
- yaffs_block_info_t **blockUsedPtr);
-
-static void yaffs_check_obj_details_loaded(yaffs_obj_t *in);
-
-static void yaffs_invalidate_whole_cache(yaffs_obj_t *in);
-static void yaffs_invalidate_chunk_cache(yaffs_obj_t *object, int chunk_id);
-
-static int yaffs_find_chunk_in_file(yaffs_obj_t *in, int inode_chunk,
- yaffs_ext_tags *tags);
-
-static int yaffs_verify_chunk_written(yaffs_dev_t *dev,
- int nand_chunk,
- const __u8 *data,
- yaffs_ext_tags *tags);
-
-
-static void yaffs_load_name_from_oh(yaffs_dev_t *dev,YCHAR *name, const YCHAR *ohName, int bufferSize);
-static void yaffs_load_oh_from_name(yaffs_dev_t *dev,YCHAR *ohName, const YCHAR *name);
-
+static void yaffs_fix_null_name(struct yaffs_obj *obj, YCHAR *name,
+ int buffer_size);
/* Function to calculate chunk and offset */
-static void yaffs_addr_to_chunk(yaffs_dev_t *dev, loff_t addr, int *chunkOut,
- __u32 *offsetOut)
+void yaffs_addr_to_chunk(struct yaffs_dev *dev, loff_t addr,
+ int *chunk_out, u32 *offset_out)
{
int chunk;
- __u32 offset;
+ u32 offset;
- chunk = (__u32)(addr >> dev->chunk_shift);
+ chunk = (u32) (addr >> dev->chunk_shift);
if (dev->chunk_div == 1) {
/* easy power of 2 case */
- offset = (__u32)(addr & dev->chunk_mask);
+ offset = (u32) (addr & dev->chunk_mask);
} else {
/* Non power-of-2 case */
- loff_t chunkBase;
+ loff_t chunk_base;
chunk /= dev->chunk_div;
- chunkBase = ((loff_t)chunk) * dev->data_bytes_per_chunk;
- offset = (__u32)(addr - chunkBase);
+ chunk_base = ((loff_t) chunk) * dev->data_bytes_per_chunk;
+ offset = (u32) (addr - chunk_base);
}
- *chunkOut = chunk;
- *offsetOut = offset;
+ *chunk_out = chunk;
+ *offset_out = offset;
}
/* Function to return the number of shifts for a power of 2 greater than or
@@ -135,110 +78,93 @@ static void yaffs_addr_to_chunk(yaffs_dev_t *dev, loff_t addr, int *chunkOut,
* be hellishly efficient.
*/
-static __u32 ShiftsGE(__u32 x)
+static inline u32 calc_shifts_ceiling(u32 x)
{
- int extraBits;
- int nShifts;
+ int extra_bits;
+ int shifts;
- nShifts = extraBits = 0;
+ shifts = extra_bits = 0;
while (x > 1) {
if (x & 1)
- extraBits++;
+ extra_bits++;
x >>= 1;
- nShifts++;
+ shifts++;
}
- if (extraBits)
- nShifts++;
+ if (extra_bits)
+ shifts++;
- return nShifts;
+ return shifts;
}
/* Function to return the number of shifts to get a 1 in bit 0
*/
-static __u32 Shifts(__u32 x)
+static inline u32 calc_shifts(u32 x)
{
- __u32 nShifts;
+ u32 shifts;
- nShifts = 0;
+ shifts = 0;
if (!x)
return 0;
- while (!(x&1)) {
+ while (!(x & 1)) {
x >>= 1;
- nShifts++;
+ shifts++;
}
- return nShifts;
+ return shifts;
}
-
-
/*
* Temporary buffer manipulations.
*/
-static int yaffs_init_tmp_buffers(yaffs_dev_t *dev)
+static int yaffs_init_tmp_buffers(struct yaffs_dev *dev)
{
int i;
- __u8 *buf = (__u8 *)1;
+ u8 *buf = (u8 *) 1;
memset(dev->temp_buffer, 0, sizeof(dev->temp_buffer));
for (i = 0; buf && i < YAFFS_N_TEMP_BUFFERS; i++) {
- dev->temp_buffer[i].line = 0; /* not in use */
- dev->temp_buffer[i].buffer = buf =
- YMALLOC_DMA(dev->param.total_bytes_per_chunk);
+ dev->temp_buffer[i].in_use = 0;
+ buf = kmalloc(dev->param.total_bytes_per_chunk, GFP_NOFS);
+ dev->temp_buffer[i].buffer = buf;
}
return buf ? YAFFS_OK : YAFFS_FAIL;
}
-__u8 *yaffs_get_temp_buffer(yaffs_dev_t *dev, int line_no)
+u8 *yaffs_get_temp_buffer(struct yaffs_dev * dev)
{
- int i, j;
+ int i;
dev->temp_in_use++;
if (dev->temp_in_use > dev->max_temp)
dev->max_temp = dev->temp_in_use;
for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
- if (dev->temp_buffer[i].line == 0) {
- dev->temp_buffer[i].line = line_no;
- if ((i + 1) > dev->max_temp) {
- dev->max_temp = i + 1;
- for (j = 0; j <= i; j++)
- dev->temp_buffer[j].max_line =
- dev->temp_buffer[j].line;
- }
-
+ if (dev->temp_buffer[i].in_use == 0) {
+ dev->temp_buffer[i].in_use = 1;
return dev->temp_buffer[i].buffer;
}
}
- T(YAFFS_TRACE_BUFFERS,
- (TSTR("Out of temp buffers at line %d, other held by lines:"),
- line_no));
- for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++)
- T(YAFFS_TRACE_BUFFERS, (TSTR(" %d "), dev->temp_buffer[i].line));
-
- T(YAFFS_TRACE_BUFFERS, (TSTR(" " TENDSTR)));
-
+ yaffs_trace(YAFFS_TRACE_BUFFERS, "Out of temp buffers");
/*
* If we got here then we have to allocate an unmanaged one
* This is not good.
*/
dev->unmanaged_buffer_allocs++;
- return YMALLOC(dev->data_bytes_per_chunk);
+ return kmalloc(dev->data_bytes_per_chunk, GFP_NOFS);
}
-void yaffs_release_temp_buffer(yaffs_dev_t *dev, __u8 *buffer,
- int line_no)
+void yaffs_release_temp_buffer(struct yaffs_dev *dev, u8 *buffer)
{
int i;
@@ -246,61 +172,94 @@ void yaffs_release_temp_buffer(yaffs_dev_t *dev, __u8 *buffer,
for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
if (dev->temp_buffer[i].buffer == buffer) {
- dev->temp_buffer[i].line = 0;
+ dev->temp_buffer[i].in_use = 0;
return;
}
}
if (buffer) {
/* assume it is an unmanaged one. */
- T(YAFFS_TRACE_BUFFERS,
- (TSTR("Releasing unmanaged temp buffer in line %d" TENDSTR),
- line_no));
- YFREE(buffer);
+ yaffs_trace(YAFFS_TRACE_BUFFERS,
+ "Releasing unmanaged temp buffer");
+ kfree(buffer);
dev->unmanaged_buffer_deallocs++;
}
}
/*
- * Determine if we have a managed buffer.
+ * Functions for robustisizing TODO
+ *
*/
-int yaffs_is_managed_tmp_buffer(yaffs_dev_t *dev, const __u8 *buffer)
+
+static void yaffs_handle_chunk_wr_ok(struct yaffs_dev *dev, int nand_chunk,
+ const u8 *data,
+ const struct yaffs_ext_tags *tags)
{
- int i;
+ (void) dev;
+ (void) nand_chunk;
+ (void) data;
+ (void) tags;
+}
- for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
- if (dev->temp_buffer[i].buffer == buffer)
- return 1;
- }
+static void yaffs_handle_chunk_update(struct yaffs_dev *dev, int nand_chunk,
+ const struct yaffs_ext_tags *tags)
+{
+ (void) dev;
+ (void) nand_chunk;
+ (void) tags;
+}
- for (i = 0; i < dev->param.n_caches; i++) {
- if (dev->cache[i].data == buffer)
- return 1;
+void yaffs_handle_chunk_error(struct yaffs_dev *dev,
+ struct yaffs_block_info *bi)
+{
+ if (!bi->gc_prioritise) {
+ bi->gc_prioritise = 1;
+ dev->has_pending_prioritised_gc = 1;
+ bi->chunk_error_strikes++;
+
+ if (bi->chunk_error_strikes > 3) {
+ bi->needs_retiring = 1; /* Too many stikes, so retire */
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "yaffs: Block struck out");
+
+ }
}
+}
- if (buffer == dev->checkpt_buffer)
- return 1;
+static void yaffs_handle_chunk_wr_error(struct yaffs_dev *dev, int nand_chunk,
+ int erased_ok)
+{
+ int flash_block = nand_chunk / dev->param.chunks_per_block;
+ struct yaffs_block_info *bi = yaffs_get_block_info(dev, flash_block);
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs: unmaged buffer detected.\n" TENDSTR)));
- return 0;
+ yaffs_handle_chunk_error(dev, bi);
+
+ if (erased_ok) {
+ /* Was an actual write failure,
+ * so mark the block for retirement.*/
+ bi->needs_retiring = 1;
+ yaffs_trace(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
+ "**>> Block %d needs retiring", flash_block);
+ }
+
+ /* Delete the chunk */
+ yaffs_chunk_del(dev, nand_chunk, 1, __LINE__);
+ yaffs_skip_rest_of_block(dev);
}
/*
* Verification code
*/
-
-
-
/*
* Simple hash function. Needs to have a reasonable spread
*/
-static Y_INLINE int yaffs_hash_fn(int n)
+static inline int yaffs_hash_fn(int n)
{
- n = abs(n);
+ if (n < 0)
+ n = -n;
return n % YAFFS_NOBJECT_BUCKETS;
}
@@ -309,38 +268,36 @@ static Y_INLINE int yaffs_hash_fn(int n)
* Note that root might have a presence in NAND if permissions are set.
*/
-yaffs_obj_t *yaffs_root(yaffs_dev_t *dev)
+struct yaffs_obj *yaffs_root(struct yaffs_dev *dev)
{
return dev->root_dir;
}
-yaffs_obj_t *yaffs_lost_n_found(yaffs_dev_t *dev)
+struct yaffs_obj *yaffs_lost_n_found(struct yaffs_dev *dev)
{
return dev->lost_n_found;
}
-
/*
* Erased NAND checking functions
*/
-int yaffs_check_ff(__u8 *buffer, int n_bytes)
+int yaffs_check_ff(u8 *buffer, int n_bytes)
{
/* Horrible, slow implementation */
while (n_bytes--) {
- if (*buffer != 0xFF)
+ if (*buffer != 0xff)
return 0;
buffer++;
}
return 1;
}
-static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev,
- int nand_chunk)
+static int yaffs_check_chunk_erased(struct yaffs_dev *dev, int nand_chunk)
{
int retval = YAFFS_OK;
- __u8 *data = yaffs_get_temp_buffer(dev, __LINE__);
- yaffs_ext_tags tags;
+ u8 *data = yaffs_get_temp_buffer(dev);
+ struct yaffs_ext_tags tags;
int result;
result = yaffs_rd_chunk_tags_nand(dev, nand_chunk, data, &tags);
@@ -348,57 +305,199 @@ static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev,
if (tags.ecc_result > YAFFS_ECC_RESULT_NO_ERROR)
retval = YAFFS_FAIL;
- if (!yaffs_check_ff(data, dev->data_bytes_per_chunk) || tags.chunk_used) {
- T(YAFFS_TRACE_NANDACCESS,
- (TSTR("Chunk %d not erased" TENDSTR), nand_chunk));
+ if (!yaffs_check_ff(data, dev->data_bytes_per_chunk) ||
+ tags.chunk_used) {
+ yaffs_trace(YAFFS_TRACE_NANDACCESS,
+ "Chunk %d not erased", nand_chunk);
retval = YAFFS_FAIL;
}
- yaffs_release_temp_buffer(dev, data, __LINE__);
+ yaffs_release_temp_buffer(dev, data);
return retval;
}
-
-static int yaffs_verify_chunk_written(yaffs_dev_t *dev,
- int nand_chunk,
- const __u8 *data,
- yaffs_ext_tags *tags)
+static int yaffs_verify_chunk_written(struct yaffs_dev *dev,
+ int nand_chunk,
+ const u8 *data,
+ struct yaffs_ext_tags *tags)
{
int retval = YAFFS_OK;
- yaffs_ext_tags tempTags;
- __u8 *buffer = yaffs_get_temp_buffer(dev,__LINE__);
+ struct yaffs_ext_tags temp_tags;
+ u8 *buffer = yaffs_get_temp_buffer(dev);
int result;
-
- result = yaffs_rd_chunk_tags_nand(dev,nand_chunk,buffer,&tempTags);
- if(memcmp(buffer,data,dev->data_bytes_per_chunk) ||
- tempTags.obj_id != tags->obj_id ||
- tempTags.chunk_id != tags->chunk_id ||
- tempTags.n_bytes != tags->n_bytes)
+
+ result = yaffs_rd_chunk_tags_nand(dev, nand_chunk, buffer, &temp_tags);
+ if (memcmp(buffer, data, dev->data_bytes_per_chunk) ||
+ temp_tags.obj_id != tags->obj_id ||
+ temp_tags.chunk_id != tags->chunk_id ||
+ temp_tags.n_bytes != tags->n_bytes)
retval = YAFFS_FAIL;
- yaffs_release_temp_buffer(dev, buffer, __LINE__);
+ yaffs_release_temp_buffer(dev, buffer);
return retval;
}
-static int yaffs_write_new_chunk(struct yaffs_dev_s *dev,
- const __u8 *data,
- yaffs_ext_tags *tags,
- int useReserve)
+
+int yaffs_check_alloc_available(struct yaffs_dev *dev, int n_chunks)
+{
+ int reserved_chunks;
+ int reserved_blocks = dev->param.n_reserved_blocks;
+ int checkpt_blocks;
+
+ checkpt_blocks = yaffs_calc_checkpt_blocks_required(dev);
+
+ reserved_chunks =
+ (reserved_blocks + checkpt_blocks) * dev->param.chunks_per_block;
+
+ return (dev->n_free_chunks > (reserved_chunks + n_chunks));
+}
+
+static int yaffs_find_alloc_block(struct yaffs_dev *dev)
+{
+ int i;
+ struct yaffs_block_info *bi;
+
+ if (dev->n_erased_blocks < 1) {
+ /* Hoosterman we've got a problem.
+ * Can't get space to gc
+ */
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "yaffs tragedy: no more erased blocks");
+
+ return -1;
+ }
+
+ /* Find an empty block. */
+
+ for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) {
+ dev->alloc_block_finder++;
+ if (dev->alloc_block_finder < dev->internal_start_block
+ || dev->alloc_block_finder > dev->internal_end_block) {
+ dev->alloc_block_finder = dev->internal_start_block;
+ }
+
+ bi = yaffs_get_block_info(dev, dev->alloc_block_finder);
+
+ if (bi->block_state == YAFFS_BLOCK_STATE_EMPTY) {
+ bi->block_state = YAFFS_BLOCK_STATE_ALLOCATING;
+ dev->seq_number++;
+ bi->seq_number = dev->seq_number;
+ dev->n_erased_blocks--;
+ yaffs_trace(YAFFS_TRACE_ALLOCATE,
+ "Allocated block %d, seq %d, %d left" ,
+ dev->alloc_block_finder, dev->seq_number,
+ dev->n_erased_blocks);
+ return dev->alloc_block_finder;
+ }
+ }
+
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "yaffs tragedy: no more erased blocks, but there should have been %d",
+ dev->n_erased_blocks);
+
+ return -1;
+}
+
+static int yaffs_alloc_chunk(struct yaffs_dev *dev, int use_reserver,
+ struct yaffs_block_info **block_ptr)
+{
+ int ret_val;
+ struct yaffs_block_info *bi;
+
+ if (dev->alloc_block < 0) {
+ /* Get next block to allocate off */
+ dev->alloc_block = yaffs_find_alloc_block(dev);
+ dev->alloc_page = 0;
+ }
+
+ if (!use_reserver && !yaffs_check_alloc_available(dev, 1)) {
+ /* No space unless we're allowed to use the reserve. */
+ return -1;
+ }
+
+ if (dev->n_erased_blocks < dev->param.n_reserved_blocks
+ && dev->alloc_page == 0)
+ yaffs_trace(YAFFS_TRACE_ALLOCATE, "Allocating reserve");
+
+ /* Next page please.... */
+ if (dev->alloc_block >= 0) {
+ bi = yaffs_get_block_info(dev, dev->alloc_block);
+
+ ret_val = (dev->alloc_block * dev->param.chunks_per_block) +
+ dev->alloc_page;
+ bi->pages_in_use++;
+ yaffs_set_chunk_bit(dev, dev->alloc_block, dev->alloc_page);
+
+ dev->alloc_page++;
+
+ dev->n_free_chunks--;
+
+ /* If the block is full set the state to full */
+ if (dev->alloc_page >= dev->param.chunks_per_block) {
+ bi->block_state = YAFFS_BLOCK_STATE_FULL;
+ dev->alloc_block = -1;
+ }
+
+ if (block_ptr)
+ *block_ptr = bi;
+
+ return ret_val;
+ }
+
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!");
+
+ return -1;
+}
+
+static int yaffs_get_erased_chunks(struct yaffs_dev *dev)
+{
+ int n;
+
+ n = dev->n_erased_blocks * dev->param.chunks_per_block;
+
+ if (dev->alloc_block > 0)
+ n += (dev->param.chunks_per_block - dev->alloc_page);
+
+ return n;
+
+}
+
+/*
+ * yaffs_skip_rest_of_block() skips over the rest of the allocation block
+ * if we don't want to write to it.
+ */
+void yaffs_skip_rest_of_block(struct yaffs_dev *dev)
+{
+ struct yaffs_block_info *bi;
+
+ if (dev->alloc_block > 0) {
+ bi = yaffs_get_block_info(dev, dev->alloc_block);
+ if (bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING) {
+ bi->block_state = YAFFS_BLOCK_STATE_FULL;
+ dev->alloc_block = -1;
+ }
+ }
+}
+
+static int yaffs_write_new_chunk(struct yaffs_dev *dev,
+ const u8 *data,
+ struct yaffs_ext_tags *tags, int use_reserver)
{
int attempts = 0;
- int writeOk = 0;
+ int write_ok = 0;
int chunk;
yaffs2_checkpt_invalidate(dev);
do {
- yaffs_block_info_t *bi = 0;
- int erasedOk = 0;
+ struct yaffs_block_info *bi = 0;
+ int erased_ok = 0;
- chunk = yaffs_alloc_chunk(dev, useReserve, &bi);
+ chunk = yaffs_alloc_chunk(dev, use_reserver, &bi);
if (chunk < 0) {
/* no space */
break;
@@ -410,7 +509,7 @@ static int yaffs_write_new_chunk(struct yaffs_dev_s *dev,
*
* Check the first page we try to write in a block.
* If the check passes then we don't need to check any
- * more. If the check fails, we check again...
+ * more. If the check fails, we check again...
* If the block has been erased, we don't need to check.
*
* However, if the block has been prioritised for gc,
@@ -424,42 +523,42 @@ static int yaffs_write_new_chunk(struct yaffs_dev_s *dev,
* lot of checks that are most likely not needed.
*
* Mods to the above
- * If an erase check fails or the write fails we skip the
+ * If an erase check fails or the write fails we skip the
* rest of the block.
*/
/* let's give it a try */
attempts++;
- if(dev->param.always_check_erased)
+ if (dev->param.always_check_erased)
bi->skip_erased_check = 0;
if (!bi->skip_erased_check) {
- erasedOk = yaffs_check_chunk_erased(dev, chunk);
- if (erasedOk != YAFFS_OK) {
- T(YAFFS_TRACE_ERROR,
- (TSTR("**>> yaffs chunk %d was not erased"
- TENDSTR), chunk));
+ erased_ok = yaffs_check_chunk_erased(dev, chunk);
+ if (erased_ok != YAFFS_OK) {
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "**>> yaffs chunk %d was not erased",
+ chunk);
/* If not erased, delete this one,
* skip rest of block and
* try another chunk */
- yaffs_chunk_del(dev,chunk,1,__LINE__);
- yaffs_skip_rest_of_block(dev);
+ yaffs_chunk_del(dev, chunk, 1, __LINE__);
+ yaffs_skip_rest_of_block(dev);
continue;
}
}
- writeOk = yaffs_wr_chunk_tags_nand(dev, chunk,
- data, tags);
+ write_ok = yaffs_wr_chunk_tags_nand(dev, chunk, data, tags);
- if(!bi->skip_erased_check)
- writeOk = yaffs_verify_chunk_written(dev, chunk, data, tags);
+ if (!bi->skip_erased_check)
+ write_ok =
+ yaffs_verify_chunk_written(dev, chunk, data, tags);
- if (writeOk != YAFFS_OK) {
+ if (write_ok != YAFFS_OK) {
/* Clean up aborted write, skip to next block and
* try another chunk */
- yaffs_handle_chunk_wr_error(dev, chunk, erasedOk);
+ yaffs_handle_chunk_wr_error(dev, chunk, erased_ok);
continue;
}
@@ -468,58 +567,58 @@ static int yaffs_write_new_chunk(struct yaffs_dev_s *dev,
/* Copy the data into the robustification buffer */
yaffs_handle_chunk_wr_ok(dev, chunk, data, tags);
- } while (writeOk != YAFFS_OK &&
- (yaffs_wr_attempts <= 0 || attempts <= yaffs_wr_attempts));
+ } while (write_ok != YAFFS_OK &&
+ (yaffs_wr_attempts <= 0 || attempts <= yaffs_wr_attempts));
- if (!writeOk)
+ if (!write_ok)
chunk = -1;
if (attempts > 1) {
- T(YAFFS_TRACE_ERROR,
- (TSTR("**>> yaffs write required %d attempts" TENDSTR),
- attempts));
-
- dev->n_retired_writes += (attempts - 1);
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "**>> yaffs write required %d attempts",
+ attempts);
+ dev->n_retried_writes += (attempts - 1);
}
return chunk;
}
-
-
/*
* Block retiring for handling a broken block.
*/
-static void yaffs_retire_block(yaffs_dev_t *dev, int flash_block)
+static void yaffs_retire_block(struct yaffs_dev *dev, int flash_block)
{
- yaffs_block_info_t *bi = yaffs_get_block_info(dev, flash_block);
+ struct yaffs_block_info *bi = yaffs_get_block_info(dev, flash_block);
yaffs2_checkpt_invalidate(dev);
-
- yaffs2_clear_oldest_dirty_seq(dev,bi);
+
+ yaffs2_clear_oldest_dirty_seq(dev, bi);
if (yaffs_mark_bad(dev, flash_block) != YAFFS_OK) {
if (yaffs_erase_block(dev, flash_block) != YAFFS_OK) {
- T(YAFFS_TRACE_ALWAYS, (TSTR(
- "yaffs: Failed to mark bad and erase block %d"
- TENDSTR), flash_block));
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "yaffs: Failed to mark bad and erase block %d",
+ flash_block);
} else {
- yaffs_ext_tags tags;
- int chunk_id = flash_block * dev->param.chunks_per_block;
+ struct yaffs_ext_tags tags;
+ int chunk_id =
+ flash_block * dev->param.chunks_per_block;
- __u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__);
+ u8 *buffer = yaffs_get_temp_buffer(dev);
memset(buffer, 0xff, dev->data_bytes_per_chunk);
- yaffs_init_tags(&tags);
+ memset(&tags, 0, sizeof(tags));
tags.seq_number = YAFFS_SEQUENCE_BAD_BLOCK;
- if (dev->param.write_chunk_tags_fn(dev, chunk_id -
- dev->chunk_offset, buffer, &tags) != YAFFS_OK)
- T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Failed to "
- TCONT("write bad block marker to block %d")
- TENDSTR), flash_block));
-
- yaffs_release_temp_buffer(dev, buffer, __LINE__);
+ if (dev->tagger.write_chunk_tags_fn(dev, chunk_id -
+ dev->chunk_offset,
+ buffer,
+ &tags) != YAFFS_OK)
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "yaffs: Failed to write bad block marker to block %d",
+ flash_block);
+
+ yaffs_release_temp_buffer(dev, buffer);
}
}
@@ -530,110 +629,64 @@ static void yaffs_retire_block(yaffs_dev_t *dev, int flash_block)
dev->n_retired_blocks++;
}
-/*
- * Functions for robustisizing TODO
- *
- */
-
-static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk,
- const __u8 *data,
- const yaffs_ext_tags *tags)
-{
- dev=dev;
- nand_chunk=nand_chunk;
- data=data;
- tags=tags;
-}
+/*---------------- Name handling functions ------------*/
-static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk,
- const yaffs_ext_tags *tags)
+static u16 yaffs_calc_name_sum(const YCHAR *name)
{
- dev=dev;
- nand_chunk=nand_chunk;
- tags=tags;
-}
+ u16 sum = 0;
+ u16 i = 1;
-void yaffs_handle_chunk_error(yaffs_dev_t *dev, yaffs_block_info_t *bi)
-{
- if (!bi->gc_prioritise) {
- bi->gc_prioritise = 1;
- dev->has_pending_prioritised_gc = 1;
- bi->chunk_error_strikes++;
+ if (!name)
+ return 0;
- if (bi->chunk_error_strikes > 3) {
- bi->needs_retiring = 1; /* Too many stikes, so retire this */
- T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Block struck out" TENDSTR)));
+ while ((*name) && i < (YAFFS_MAX_NAME_LENGTH / 2)) {
- }
+ /* 0x1f mask is case insensitive */
+ sum += ((*name) & 0x1f) * i;
+ i++;
+ name++;
}
+ return sum;
}
-static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk,
- int erasedOk)
-{
- int flash_block = nand_chunk / dev->param.chunks_per_block;
- yaffs_block_info_t *bi = yaffs_get_block_info(dev, flash_block);
- yaffs_handle_chunk_error(dev, bi);
+void yaffs_set_obj_name(struct yaffs_obj *obj, const YCHAR * name)
+{
+ memset(obj->short_name, 0, sizeof(obj->short_name));
- if (erasedOk) {
- /* Was an actual write failure, so mark the block for retirement */
- bi->needs_retiring = 1;
- T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
- (TSTR("**>> Block %d needs retiring" TENDSTR), flash_block));
+ if (name && !name[0]) {
+ yaffs_fix_null_name(obj, obj->short_name,
+ YAFFS_SHORT_NAME_LENGTH);
+ name = obj->short_name;
+ } else if (name &&
+ strnlen(name, YAFFS_SHORT_NAME_LENGTH + 1) <=
+ YAFFS_SHORT_NAME_LENGTH) {
+ strcpy(obj->short_name, name);
}
- /* Delete the chunk */
- yaffs_chunk_del(dev, nand_chunk, 1, __LINE__);
- yaffs_skip_rest_of_block(dev);
+ obj->sum = yaffs_calc_name_sum(name);
}
-
-/*---------------- Name handling functions ------------*/
-
-static __u16 yaffs_calc_name_sum(const YCHAR *name)
+void yaffs_set_obj_name_from_oh(struct yaffs_obj *obj,
+ const struct yaffs_obj_hdr *oh)
{
- __u16 sum = 0;
- __u16 i = 1;
-
- const YUCHAR *bname = (const YUCHAR *) name;
- if (bname) {
- while ((*bname) && (i < (YAFFS_MAX_NAME_LENGTH/2))) {
-
-#ifdef CONFIG_YAFFS_CASE_INSENSITIVE
- sum += yaffs_toupper(*bname) * i;
+#ifdef CONFIG_YAFFS_AUTO_UNICODE
+ YCHAR tmp_name[YAFFS_MAX_NAME_LENGTH + 1];
+ memset(tmp_name, 0, sizeof(tmp_name));
+ yaffs_load_name_from_oh(obj->my_dev, tmp_name, oh->name,
+ YAFFS_MAX_NAME_LENGTH + 1);
+ yaffs_set_obj_name(obj, tmp_name);
#else
- sum += (*bname) * i;
+ yaffs_set_obj_name(obj, oh->name);
#endif
- i++;
- bname++;
- }
- }
- return sum;
}
-void yaffs_set_obj_name(yaffs_obj_t *obj, const YCHAR *name)
+loff_t yaffs_max_file_size(struct yaffs_dev *dev)
{
-#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
- memset(obj->short_name, 0, sizeof(YCHAR) * (YAFFS_SHORT_NAME_LENGTH+1));
- if (name && yaffs_strnlen(name,YAFFS_SHORT_NAME_LENGTH+1) <= YAFFS_SHORT_NAME_LENGTH)
- yaffs_strcpy(obj->short_name, name);
+ if(sizeof(loff_t) < 8)
+ return YAFFS_MAX_FILE_SIZE_32;
else
- obj->short_name[0] = _Y('\0');
-#endif
- obj->sum = yaffs_calc_name_sum(name);
-}
-
-void yaffs_set_obj_name_from_oh(yaffs_obj_t *obj, const yaffs_obj_header *oh)
-{
-#ifdef CONFIG_YAFFS_AUTO_UNICODE
- YCHAR tmpName[YAFFS_MAX_NAME_LENGTH+1];
- memset(tmpName,0,sizeof(tmpName));
- yaffs_load_name_from_oh(obj->my_dev,tmpName,oh->name,YAFFS_MAX_NAME_LENGTH+1);
- yaffs_set_obj_name(obj,tmpName);
-#else
- yaffs_set_obj_name(obj,oh->name);
-#endif
+ return ((loff_t) YAFFS_MAX_CHUNK_ID) * dev->data_bytes_per_chunk;
}
/*-------------------- TNODES -------------------
@@ -643,87 +696,87 @@ void yaffs_set_obj_name_from_oh(yaffs_obj_t *obj, const yaffs_obj_header *oh)
* in the tnode.
*/
-
-yaffs_tnode_t *yaffs_get_tnode(yaffs_dev_t *dev)
+struct yaffs_tnode *yaffs_get_tnode(struct yaffs_dev *dev)
{
- yaffs_tnode_t *tn = yaffs_alloc_raw_tnode(dev);
- if (tn){
+ struct yaffs_tnode *tn = yaffs_alloc_raw_tnode(dev);
+
+ if (tn) {
memset(tn, 0, dev->tnode_size);
dev->n_tnodes++;
}
- dev->checkpoint_blocks_required = 0; /* force recalculation*/
+ dev->checkpoint_blocks_required = 0; /* force recalculation */
return tn;
}
/* FreeTnode frees up a tnode and puts it back on the free list */
-static void yaffs_free_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn)
+static void yaffs_free_tnode(struct yaffs_dev *dev, struct yaffs_tnode *tn)
{
- yaffs_free_raw_tnode(dev,tn);
+ yaffs_free_raw_tnode(dev, tn);
dev->n_tnodes--;
- dev->checkpoint_blocks_required = 0; /* force recalculation*/
+ dev->checkpoint_blocks_required = 0; /* force recalculation */
}
-static void yaffs_deinit_tnodes_and_objs(yaffs_dev_t *dev)
+static void yaffs_deinit_tnodes_and_objs(struct yaffs_dev *dev)
{
yaffs_deinit_raw_tnodes_and_objs(dev);
dev->n_obj = 0;
dev->n_tnodes = 0;
}
-
-void yaffs_load_tnode_0(yaffs_dev_t *dev, yaffs_tnode_t *tn, unsigned pos,
- unsigned val)
+static void yaffs_load_tnode_0(struct yaffs_dev *dev, struct yaffs_tnode *tn,
+ unsigned pos, unsigned val)
{
- __u32 *map = (__u32 *)tn;
- __u32 bitInMap;
- __u32 bitInWord;
- __u32 wordInMap;
- __u32 mask;
+ u32 *map = (u32 *) tn;
+ u32 bit_in_map;
+ u32 bit_in_word;
+ u32 word_in_map;
+ u32 mask;
pos &= YAFFS_TNODES_LEVEL0_MASK;
val >>= dev->chunk_grp_bits;
- bitInMap = pos * dev->tnode_width;
- wordInMap = bitInMap / 32;
- bitInWord = bitInMap & (32 - 1);
+ bit_in_map = pos * dev->tnode_width;
+ word_in_map = bit_in_map / 32;
+ bit_in_word = bit_in_map & (32 - 1);
- mask = dev->tnode_mask << bitInWord;
+ mask = dev->tnode_mask << bit_in_word;
- map[wordInMap] &= ~mask;
- map[wordInMap] |= (mask & (val << bitInWord));
+ map[word_in_map] &= ~mask;
+ map[word_in_map] |= (mask & (val << bit_in_word));
- if (dev->tnode_width > (32 - bitInWord)) {
- bitInWord = (32 - bitInWord);
- wordInMap++;;
- mask = dev->tnode_mask >> (/*dev->tnode_width -*/ bitInWord);
- map[wordInMap] &= ~mask;
- map[wordInMap] |= (mask & (val >> bitInWord));
+ if (dev->tnode_width > (32 - bit_in_word)) {
+ bit_in_word = (32 - bit_in_word);
+ word_in_map++;
+ mask =
+ dev->tnode_mask >> bit_in_word;
+ map[word_in_map] &= ~mask;
+ map[word_in_map] |= (mask & (val >> bit_in_word));
}
}
-__u32 yaffs_get_group_base(yaffs_dev_t *dev, yaffs_tnode_t *tn,
- unsigned pos)
+u32 yaffs_get_group_base(struct yaffs_dev *dev, struct yaffs_tnode *tn,
+ unsigned pos)
{
- __u32 *map = (__u32 *)tn;
- __u32 bitInMap;
- __u32 bitInWord;
- __u32 wordInMap;
- __u32 val;
+ u32 *map = (u32 *) tn;
+ u32 bit_in_map;
+ u32 bit_in_word;
+ u32 word_in_map;
+ u32 val;
pos &= YAFFS_TNODES_LEVEL0_MASK;
- bitInMap = pos * dev->tnode_width;
- wordInMap = bitInMap / 32;
- bitInWord = bitInMap & (32 - 1);
+ bit_in_map = pos * dev->tnode_width;
+ word_in_map = bit_in_map / 32;
+ bit_in_word = bit_in_map & (32 - 1);
- val = map[wordInMap] >> bitInWord;
+ val = map[word_in_map] >> bit_in_word;
- if (dev->tnode_width > (32 - bitInWord)) {
- bitInWord = (32 - bitInWord);
- wordInMap++;;
- val |= (map[wordInMap] << bitInWord);
+ if (dev->tnode_width > (32 - bit_in_word)) {
+ bit_in_word = (32 - bit_in_word);
+ word_in_map++;
+ val |= (map[word_in_map] << bit_in_word);
}
val &= dev->tnode_mask;
@@ -740,16 +793,16 @@ __u32 yaffs_get_group_base(yaffs_dev_t *dev, yaffs_tnode_t *tn,
*/
/* FindLevel0Tnode finds the level 0 tnode, if one exists. */
-yaffs_tnode_t *yaffs_find_tnode_0(yaffs_dev_t *dev,
- yaffs_file_s *file_struct,
- __u32 chunk_id)
+struct yaffs_tnode *yaffs_find_tnode_0(struct yaffs_dev *dev,
+ struct yaffs_file_var *file_struct,
+ u32 chunk_id)
{
- yaffs_tnode_t *tn = file_struct->top;
- __u32 i;
- int requiredTallness;
+ struct yaffs_tnode *tn = file_struct->top;
+ u32 i;
+ int required_depth;
int level = file_struct->top_level;
- dev=dev;
+ (void) dev;
/* Check sane level and chunk Id */
if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL)
@@ -761,54 +814,54 @@ yaffs_tnode_t *yaffs_find_tnode_0(yaffs_dev_t *dev,
/* First check we're tall enough (ie enough top_level) */
i = chunk_id >> YAFFS_TNODES_LEVEL0_BITS;
- requiredTallness = 0;
+ required_depth = 0;
while (i) {
i >>= YAFFS_TNODES_INTERNAL_BITS;
- requiredTallness++;
+ required_depth++;
}
- if (requiredTallness > file_struct->top_level)
- return NULL; /* Not tall enough, so we can't find it */
+ if (required_depth > file_struct->top_level)
+ return NULL; /* Not tall enough, so we can't find it */
/* Traverse down to level 0 */
while (level > 0 && tn) {
tn = tn->internal[(chunk_id >>
- (YAFFS_TNODES_LEVEL0_BITS +
- (level - 1) *
- YAFFS_TNODES_INTERNAL_BITS)) &
- YAFFS_TNODES_INTERNAL_MASK];
+ (YAFFS_TNODES_LEVEL0_BITS +
+ (level - 1) *
+ YAFFS_TNODES_INTERNAL_BITS)) &
+ YAFFS_TNODES_INTERNAL_MASK];
level--;
}
return tn;
}
-/* AddOrFindLevel0Tnode finds the level 0 tnode if it exists, otherwise first expands the tree.
+/* add_find_tnode_0 finds the level 0 tnode if it exists,
+ * otherwise first expands the tree.
* This happens in two steps:
* 1. If the tree isn't tall enough, then make it taller.
* 2. Scan down the tree towards the level 0 tnode adding tnodes if required.
*
* Used when modifying the tree.
*
- * If the tn argument is NULL, then a fresh tnode will be added otherwise the specified tn will
- * be plugged into the ttree.
+ * If the tn argument is NULL, then a fresh tnode will be added otherwise the
+ * specified tn will be plugged into the ttree.
*/
-yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev,
- yaffs_file_s *file_struct,
- __u32 chunk_id,
- yaffs_tnode_t *passed_tn)
+struct yaffs_tnode *yaffs_add_find_tnode_0(struct yaffs_dev *dev,
+ struct yaffs_file_var *file_struct,
+ u32 chunk_id,
+ struct yaffs_tnode *passed_tn)
{
- int requiredTallness;
+ int required_depth;
int i;
int l;
- yaffs_tnode_t *tn;
-
- __u32 x;
-
+ struct yaffs_tnode *tn;
+ u32 x;
/* Check sane level and page Id */
- if (file_struct->top_level < 0 || file_struct->top_level > YAFFS_TNODES_MAX_LEVEL)
+ if (file_struct->top_level < 0 ||
+ file_struct->top_level > YAFFS_TNODES_MAX_LEVEL)
return NULL;
if (chunk_id > YAFFS_MAX_CHUNK_ID)
@@ -817,16 +870,15 @@ yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev,
/* First check we're tall enough (ie enough top_level) */
x = chunk_id >> YAFFS_TNODES_LEVEL0_BITS;
- requiredTallness = 0;
+ required_depth = 0;
while (x) {
x >>= YAFFS_TNODES_INTERNAL_BITS;
- requiredTallness++;
+ required_depth++;
}
-
- if (requiredTallness > file_struct->top_level) {
+ if (required_depth > file_struct->top_level) {
/* Not tall enough, gotta make the tree taller */
- for (i = file_struct->top_level; i < requiredTallness; i++) {
+ for (i = file_struct->top_level; i < required_depth; i++) {
tn = yaffs_get_tnode(dev);
@@ -835,8 +887,8 @@ yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev,
file_struct->top = tn;
file_struct->top_level++;
} else {
- T(YAFFS_TRACE_ERROR,
- (TSTR("yaffs: no more tnodes" TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "yaffs: no more tnodes");
return NULL;
}
}
@@ -854,24 +906,24 @@ yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev,
(l - 1) * YAFFS_TNODES_INTERNAL_BITS)) &
YAFFS_TNODES_INTERNAL_MASK;
-
if ((l > 1) && !tn->internal[x]) {
/* Add missing non-level-zero tnode */
tn->internal[x] = yaffs_get_tnode(dev);
- if(!tn->internal[x])
+ if (!tn->internal[x])
return NULL;
} else if (l == 1) {
/* Looking from level 1 at level 0 */
if (passed_tn) {
- /* If we already have one, then release it.*/
+ /* If we already have one, release it */
if (tn->internal[x])
- yaffs_free_tnode(dev, tn->internal[x]);
+ yaffs_free_tnode(dev,
+ tn->internal[x]);
tn->internal[x] = passed_tn;
} else if (!tn->internal[x]) {
/* Don't have one, none passed in */
tn->internal[x] = yaffs_get_tnode(dev);
- if(!tn->internal[x])
+ if (!tn->internal[x])
return NULL;
}
}
@@ -882,7 +934,8 @@ yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev,
} else {
/* top is level 0 */
if (passed_tn) {
- memcpy(tn, passed_tn, (dev->tnode_width * YAFFS_NTNODES_LEVEL0)/8);
+ memcpy(tn, passed_tn,
+ (dev->tnode_width * YAFFS_NTNODES_LEVEL0) / 8);
yaffs_free_tnode(dev, passed_tn);
}
}
@@ -890,425 +943,685 @@ yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev,
return tn;
}
-static int yaffs_find_chunk_in_group(yaffs_dev_t *dev, int theChunk,
- yaffs_ext_tags *tags, int obj_id,
- int inode_chunk)
+static int yaffs_tags_match(const struct yaffs_ext_tags *tags, int obj_id,
+ int chunk_obj)
+{
+ return (tags->chunk_id == chunk_obj &&
+ tags->obj_id == obj_id &&
+ !tags->is_deleted) ? 1 : 0;
+
+}
+
+static int yaffs_find_chunk_in_group(struct yaffs_dev *dev, int the_chunk,
+ struct yaffs_ext_tags *tags, int obj_id,
+ int inode_chunk)
{
int j;
- for (j = 0; theChunk && j < dev->chunk_grp_size; j++) {
- if (yaffs_check_chunk_bit(dev, theChunk / dev->param.chunks_per_block,
- theChunk % dev->param.chunks_per_block)) {
-
- if(dev->chunk_grp_size == 1)
- return theChunk;
+ for (j = 0; the_chunk && j < dev->chunk_grp_size; j++) {
+ if (yaffs_check_chunk_bit
+ (dev, the_chunk / dev->param.chunks_per_block,
+ the_chunk % dev->param.chunks_per_block)) {
+
+ if (dev->chunk_grp_size == 1)
+ return the_chunk;
else {
- yaffs_rd_chunk_tags_nand(dev, theChunk, NULL,
- tags);
- if (yaffs_tags_match(tags, obj_id, inode_chunk)) {
+ yaffs_rd_chunk_tags_nand(dev, the_chunk, NULL,
+ tags);
+ if (yaffs_tags_match(tags,
+ obj_id, inode_chunk)) {
/* found it; */
- return theChunk;
+ return the_chunk;
}
}
}
- theChunk++;
+ the_chunk++;
}
return -1;
}
-#if 0
-/* Experimental code not being used yet. Might speed up file deletion */
-/* DeleteWorker scans backwards through the tnode tree and deletes all the
- * chunks and tnodes in the file.
- * Returns 1 if the tree was deleted.
- * Returns 0 if it stopped early due to hitting the limit and the delete is incomplete.
- */
+int yaffs_find_chunk_in_file(struct yaffs_obj *in, int inode_chunk,
+ struct yaffs_ext_tags *tags)
+{
+ /*Get the Tnode, then get the level 0 offset chunk offset */
+ struct yaffs_tnode *tn;
+ int the_chunk = -1;
+ struct yaffs_ext_tags local_tags;
+ int ret_val = -1;
+ struct yaffs_dev *dev = in->my_dev;
+
+ if (!tags) {
+ /* Passed a NULL, so use our own tags space */
+ tags = &local_tags;
+ }
-static int yaffs_del_worker(yaffs_obj_t *in, yaffs_tnode_t *tn, __u32 level,
- int chunk_offset, int *limit)
+ tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk);
+
+ if (!tn)
+ return ret_val;
+
+ the_chunk = yaffs_get_group_base(dev, tn, inode_chunk);
+
+ ret_val = yaffs_find_chunk_in_group(dev, the_chunk, tags, in->obj_id,
+ inode_chunk);
+ return ret_val;
+}
+
+static int yaffs_find_del_file_chunk(struct yaffs_obj *in, int inode_chunk,
+ struct yaffs_ext_tags *tags)
{
- int i;
- int inode_chunk;
- int theChunk;
- yaffs_ext_tags tags;
- int foundChunk;
- yaffs_dev_t *dev = in->my_dev;
+ /* Get the Tnode, then get the level 0 offset chunk offset */
+ struct yaffs_tnode *tn;
+ int the_chunk = -1;
+ struct yaffs_ext_tags local_tags;
+ struct yaffs_dev *dev = in->my_dev;
+ int ret_val = -1;
- int allDone = 1;
+ if (!tags) {
+ /* Passed a NULL, so use our own tags space */
+ tags = &local_tags;
+ }
- if (tn) {
- if (level > 0) {
- for (i = YAFFS_NTNODES_INTERNAL - 1; allDone && i >= 0;
- i--) {
- if (tn->internal[i]) {
- if (limit && (*limit) < 0) {
- allDone = 0;
- } else {
- allDone =
- yaffs_del_worker(in,
- tn->
- internal
- [i],
- level -
- 1,
- (chunk_offset
- <<
- YAFFS_TNODES_INTERNAL_BITS)
- + i,
- limit);
- }
- if (allDone) {
- yaffs_free_tnode(dev,
- tn->
- internal[i]);
- tn->internal[i] = NULL;
- }
- }
+ tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk);
+
+ if (!tn)
+ return ret_val;
+
+ the_chunk = yaffs_get_group_base(dev, tn, inode_chunk);
+
+ ret_val = yaffs_find_chunk_in_group(dev, the_chunk, tags, in->obj_id,
+ inode_chunk);
+
+ /* Delete the entry in the filestructure (if found) */
+ if (ret_val != -1)
+ yaffs_load_tnode_0(dev, tn, inode_chunk, 0);
+
+ return ret_val;
+}
+
+int yaffs_put_chunk_in_file(struct yaffs_obj *in, int inode_chunk,
+ int nand_chunk, int in_scan)
+{
+ /* NB in_scan is zero unless scanning.
+ * For forward scanning, in_scan is > 0;
+ * for backward scanning in_scan is < 0
+ *
+ * nand_chunk = 0 is a dummy insert to make sure the tnodes are there.
+ */
+
+ struct yaffs_tnode *tn;
+ struct yaffs_dev *dev = in->my_dev;
+ int existing_cunk;
+ struct yaffs_ext_tags existing_tags;
+ struct yaffs_ext_tags new_tags;
+ unsigned existing_serial, new_serial;
+
+ if (in->variant_type != YAFFS_OBJECT_TYPE_FILE) {
+ /* Just ignore an attempt at putting a chunk into a non-file
+ * during scanning.
+ * If it is not during Scanning then something went wrong!
+ */
+ if (!in_scan) {
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "yaffs tragedy:attempt to put data chunk into a non-file"
+ );
+ BUG();
+ }
+
+ yaffs_chunk_del(dev, nand_chunk, 1, __LINE__);
+ return YAFFS_OK;
+ }
+
+ tn = yaffs_add_find_tnode_0(dev,
+ &in->variant.file_variant,
+ inode_chunk, NULL);
+ if (!tn)
+ return YAFFS_FAIL;
+
+ if (!nand_chunk)
+ /* Dummy insert, bail now */
+ return YAFFS_OK;
+
+ existing_cunk = yaffs_get_group_base(dev, tn, inode_chunk);
+
+ if (in_scan != 0) {
+ /* If we're scanning then we need to test for duplicates
+ * NB This does not need to be efficient since it should only
+ * happen when the power fails during a write, then only one
+ * chunk should ever be affected.
+ *
+ * Correction for YAFFS2: This could happen quite a lot and we
+ * need to think about efficiency! TODO
+ * Update: For backward scanning we don't need to re-read tags
+ * so this is quite cheap.
+ */
+
+ if (existing_cunk > 0) {
+ /* NB Right now existing chunk will not be real
+ * chunk_id if the chunk group size > 1
+ * thus we have to do a FindChunkInFile to get the
+ * real chunk id.
+ *
+ * We have a duplicate now we need to decide which
+ * one to use:
+ *
+ * Backwards scanning YAFFS2: The old one is what
+ * we use, dump the new one.
+ * YAFFS1: Get both sets of tags and compare serial
+ * numbers.
+ */
+
+ if (in_scan > 0) {
+ /* Only do this for forward scanning */
+ yaffs_rd_chunk_tags_nand(dev,
+ nand_chunk,
+ NULL, &new_tags);
+
+ /* Do a proper find */
+ existing_cunk =
+ yaffs_find_chunk_in_file(in, inode_chunk,
+ &existing_tags);
}
- return (allDone) ? 1 : 0;
- } else if (level == 0) {
- int hitLimit = 0;
-
- for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0 && !hitLimit;
- i--) {
- theChunk = yaffs_get_group_base(dev, tn, i);
- if (theChunk) {
-
- inode_chunk = (chunk_offset <<
- YAFFS_TNODES_LEVEL0_BITS) + i;
-
- foundChunk =
- yaffs_find_chunk_in_group(dev,
- theChunk,
- &tags,
- in->obj_id,
- inode_chunk);
-
- if (foundChunk > 0) {
- yaffs_chunk_del(dev,
- foundChunk, 1,
- __LINE__);
- in->n_data_chunks--;
- if (limit) {
- *limit = *limit - 1;
- if (*limit <= 0)
- hitLimit = 1;
- }
- }
+ if (existing_cunk <= 0) {
+ /*Hoosterman - how did this happen? */
- yaffs_load_tnode_0(dev, tn, i, 0);
- }
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "yaffs tragedy: existing chunk < 0 in scan"
+ );
}
- return (i < 0) ? 1 : 0;
+ /* NB The deleted flags should be false, otherwise
+ * the chunks will not be loaded during a scan
+ */
+
+ if (in_scan > 0) {
+ new_serial = new_tags.serial_number;
+ existing_serial = existing_tags.serial_number;
+ }
+
+ if ((in_scan > 0) &&
+ (existing_cunk <= 0 ||
+ ((existing_serial + 1) & 3) == new_serial)) {
+ /* Forward scanning.
+ * Use new
+ * Delete the old one and drop through to
+ * update the tnode
+ */
+ yaffs_chunk_del(dev, existing_cunk, 1,
+ __LINE__);
+ } else {
+ /* Backward scanning or we want to use the
+ * existing one
+ * Delete the new one and return early so that
+ * the tnode isn't changed
+ */
+ yaffs_chunk_del(dev, nand_chunk, 1, __LINE__);
+ return YAFFS_OK;
+ }
}
}
- return 1;
+ if (existing_cunk == 0)
+ in->n_data_chunks++;
-}
+ yaffs_load_tnode_0(dev, tn, inode_chunk, nand_chunk);
-#endif
+ return YAFFS_OK;
+}
-static void yaffs_soft_del_chunk(yaffs_dev_t *dev, int chunk)
+static void yaffs_soft_del_chunk(struct yaffs_dev *dev, int chunk)
{
- yaffs_block_info_t *theBlock;
+ struct yaffs_block_info *the_block;
unsigned block_no;
- T(YAFFS_TRACE_DELETION, (TSTR("soft delete chunk %d" TENDSTR), chunk));
+ yaffs_trace(YAFFS_TRACE_DELETION, "soft delete chunk %d", chunk);
- block_no = chunk / dev->param.chunks_per_block;
- theBlock = yaffs_get_block_info(dev, block_no);
- if (theBlock) {
- theBlock->soft_del_pages++;
+ block_no = chunk / dev->param.chunks_per_block;
+ the_block = yaffs_get_block_info(dev, block_no);
+ if (the_block) {
+ the_block->soft_del_pages++;
dev->n_free_chunks++;
- yaffs2_update_oldest_dirty_seq(dev, block_no, theBlock);
+ yaffs2_update_oldest_dirty_seq(dev, block_no, the_block);
}
}
-/* SoftDeleteWorker scans backwards through the tnode tree and soft deletes all the chunks in the file.
- * All soft deleting does is increment the block's softdelete count and pulls the chunk out
- * of the tnode.
- * Thus, essentially this is the same as DeleteWorker except that the chunks are soft deleted.
+/* SoftDeleteWorker scans backwards through the tnode tree and soft deletes all
+ * the chunks in the file.
+ * All soft deleting does is increment the block's softdelete count and pulls
+ * the chunk out of the tnode.
+ * Thus, essentially this is the same as DeleteWorker except that the chunks
+ * are soft deleted.
*/
-static int yaffs_soft_del_worker(yaffs_obj_t *in, yaffs_tnode_t *tn,
- __u32 level, int chunk_offset)
+static int yaffs_soft_del_worker(struct yaffs_obj *in, struct yaffs_tnode *tn,
+ u32 level, int chunk_offset)
{
int i;
- int theChunk;
- int allDone = 1;
- yaffs_dev_t *dev = in->my_dev;
+ int the_chunk;
+ int all_done = 1;
+ struct yaffs_dev *dev = in->my_dev;
- if (tn) {
- if (level > 0) {
-
- for (i = YAFFS_NTNODES_INTERNAL - 1; allDone && i >= 0;
- i--) {
- if (tn->internal[i]) {
- allDone =
- yaffs_soft_del_worker(in,
- tn->
- internal[i],
- level - 1,
- (chunk_offset
- <<
- YAFFS_TNODES_INTERNAL_BITS)
- + i);
- if (allDone) {
- yaffs_free_tnode(dev,
- tn->
- internal[i]);
- tn->internal[i] = NULL;
- } else {
- /* Hoosterman... how could this happen? */
- }
- }
- }
- return (allDone) ? 1 : 0;
- } else if (level == 0) {
-
- for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0; i--) {
- theChunk = yaffs_get_group_base(dev, tn, i);
- if (theChunk) {
- /* Note this does not find the real chunk, only the chunk group.
- * We make an assumption that a chunk group is not larger than
- * a block.
- */
- yaffs_soft_del_chunk(dev, theChunk);
- yaffs_load_tnode_0(dev, tn, i, 0);
- }
+ if (!tn)
+ return 1;
+ if (level > 0) {
+ for (i = YAFFS_NTNODES_INTERNAL - 1;
+ all_done && i >= 0;
+ i--) {
+ if (tn->internal[i]) {
+ all_done =
+ yaffs_soft_del_worker(in,
+ tn->internal[i],
+ level - 1,
+ (chunk_offset <<
+ YAFFS_TNODES_INTERNAL_BITS)
+ + i);
+ if (all_done) {
+ yaffs_free_tnode(dev,
+ tn->internal[i]);
+ tn->internal[i] = NULL;
+ } else {
+ /* Can this happen? */
+ }
}
- return 1;
+ }
+ return (all_done) ? 1 : 0;
+ }
+ /* level 0 */
+ for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0; i--) {
+ the_chunk = yaffs_get_group_base(dev, tn, i);
+ if (the_chunk) {
+ yaffs_soft_del_chunk(dev, the_chunk);
+ yaffs_load_tnode_0(dev, tn, i, 0);
}
+ }
+ return 1;
+}
+static void yaffs_remove_obj_from_dir(struct yaffs_obj *obj)
+{
+ struct yaffs_dev *dev = obj->my_dev;
+ struct yaffs_obj *parent;
+
+ yaffs_verify_obj_in_dir(obj);
+ parent = obj->parent;
+
+ yaffs_verify_dir(parent);
+
+ if (dev && dev->param.remove_obj_fn)
+ dev->param.remove_obj_fn(obj);
+
+ list_del_init(&obj->siblings);
+ obj->parent = NULL;
+
+ yaffs_verify_dir(parent);
+}
+
+void yaffs_add_obj_to_dir(struct yaffs_obj *directory, struct yaffs_obj *obj)
+{
+ if (!directory) {
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "tragedy: Trying to add an object to a null pointer directory"
+ );
+ BUG();
+ return;
+ }
+ if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "tragedy: Trying to add an object to a non-directory"
+ );
+ BUG();
}
- return 1;
+ if (obj->siblings.prev == NULL) {
+ /* Not initialised */
+ BUG();
+ }
+
+ yaffs_verify_dir(directory);
+
+ yaffs_remove_obj_from_dir(obj);
+
+ /* Now add it */
+ list_add(&obj->siblings, &directory->variant.dir_variant.children);
+ obj->parent = directory;
+
+ if (directory == obj->my_dev->unlinked_dir
+ || directory == obj->my_dev->del_dir) {
+ obj->unlinked = 1;
+ obj->my_dev->n_unlinked_files++;
+ obj->rename_allowed = 0;
+ }
+ yaffs_verify_dir(directory);
+ yaffs_verify_obj_in_dir(obj);
}
-static void yaffs_soft_del_file(yaffs_obj_t *obj)
+static int yaffs_change_obj_name(struct yaffs_obj *obj,
+ struct yaffs_obj *new_dir,
+ const YCHAR *new_name, int force, int shadows)
{
- if (obj->deleted &&
- obj->variant_type == YAFFS_OBJECT_TYPE_FILE && !obj->soft_del) {
- if (obj->n_data_chunks <= 0) {
- /* Empty file with no duplicate object headers, just delete it immediately */
- yaffs_free_tnode(obj->my_dev,
- obj->variant.file_variant.top);
- obj->variant.file_variant.top = NULL;
- T(YAFFS_TRACE_TRACING,
- (TSTR("yaffs: Deleting empty file %d" TENDSTR),
- obj->obj_id));
- yaffs_generic_obj_del(obj);
- } else {
- yaffs_soft_del_worker(obj,
- obj->variant.file_variant.top,
- obj->variant.file_variant.
- top_level, 0);
- obj->soft_del = 1;
- }
+ int unlink_op;
+ int del_op;
+ struct yaffs_obj *existing_target;
+
+ if (new_dir == NULL)
+ new_dir = obj->parent; /* use the old directory */
+
+ if (new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "tragedy: yaffs_change_obj_name: new_dir is not a directory"
+ );
+ BUG();
}
+
+ unlink_op = (new_dir == obj->my_dev->unlinked_dir);
+ del_op = (new_dir == obj->my_dev->del_dir);
+
+ existing_target = yaffs_find_by_name(new_dir, new_name);
+
+ /* If the object is a file going into the unlinked directory,
+ * then it is OK to just stuff it in since duplicate names are OK.
+ * else only proceed if the new name does not exist and we're putting
+ * it into a directory.
+ */
+ if (!(unlink_op || del_op || force ||
+ shadows > 0 || !existing_target) ||
+ new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY)
+ return YAFFS_FAIL;
+
+ yaffs_set_obj_name(obj, new_name);
+ obj->dirty = 1;
+ yaffs_add_obj_to_dir(new_dir, obj);
+
+ if (unlink_op)
+ obj->unlinked = 1;
+
+ /* If it is a deletion then we mark it as a shrink for gc */
+ if (yaffs_update_oh(obj, new_name, 0, del_op, shadows, NULL) >= 0)
+ return YAFFS_OK;
+
+ return YAFFS_FAIL;
}
-/* Pruning removes any part of the file structure tree that is beyond the
- * bounds of the file (ie that does not point to chunks).
- *
- * A file should only get pruned when its size is reduced.
- *
- * Before pruning, the chunks must be pulled from the tree and the
- * level 0 tnode entries must be zeroed out.
- * Could also use this for file deletion, but that's probably better handled
- * by a special case.
+/*------------------------ Short Operations Cache ------------------------------
+ * In many situations where there is no high level buffering a lot of
+ * reads might be short sequential reads, and a lot of writes may be short
+ * sequential writes. eg. scanning/writing a jpeg file.
+ * In these cases, a short read/write cache can provide a huge perfomance
+ * benefit with dumb-as-a-rock code.
+ * In Linux, the page cache provides read buffering and the short op cache
+ * provides write buffering.
*
- * This function is recursive. For levels > 0 the function is called again on
- * any sub-tree. For level == 0 we just check if the sub-tree has data.
- * If there is no data in a subtree then it is pruned.
+ * There are a small number (~10) of cache chunks per device so that we don't
+ * need a very intelligent search.
*/
-static yaffs_tnode_t *yaffs_prune_worker(yaffs_dev_t *dev, yaffs_tnode_t *tn,
- __u32 level, int del0)
+static int yaffs_obj_cache_dirty(struct yaffs_obj *obj)
{
+ struct yaffs_dev *dev = obj->my_dev;
int i;
- int hasData;
+ struct yaffs_cache *cache;
+ int n_caches = obj->my_dev->param.n_caches;
- if (tn) {
- hasData = 0;
-
- if(level > 0){
- for (i = 0; i < YAFFS_NTNODES_INTERNAL; i++) {
- if (tn->internal[i]) {
- tn->internal[i] =
- yaffs_prune_worker(dev, tn->internal[i],
- level - 1,
- (i == 0) ? del0 : 1);
- }
+ for (i = 0; i < n_caches; i++) {
+ cache = &dev->cache[i];
+ if (cache->object == obj && cache->dirty)
+ return 1;
+ }
+
+ return 0;
+}
- if (tn->internal[i])
- hasData++;
+static void yaffs_flush_file_cache(struct yaffs_obj *obj)
+{
+ struct yaffs_dev *dev = obj->my_dev;
+ int lowest = -99; /* Stop compiler whining. */
+ int i;
+ struct yaffs_cache *cache;
+ int chunk_written = 0;
+ int n_caches = obj->my_dev->param.n_caches;
+
+ if (n_caches < 1)
+ return;
+ do {
+ cache = NULL;
+
+ /* Find the lowest dirty chunk for this object */
+ for (i = 0; i < n_caches; i++) {
+ if (dev->cache[i].object == obj &&
+ dev->cache[i].dirty) {
+ if (!cache ||
+ dev->cache[i].chunk_id < lowest) {
+ cache = &dev->cache[i];
+ lowest = cache->chunk_id;
+ }
}
- } else {
- int tnode_size_u32 = dev->tnode_size/sizeof(__u32);
- __u32 *map = (__u32 *)tn;
+ }
- for(i = 0; !hasData && i < tnode_size_u32; i++){
- if(map[i])
- hasData++;
- }
- }
+ if (cache && !cache->locked) {
+ /* Write it out and free it up */
+ chunk_written =
+ yaffs_wr_data_obj(cache->object,
+ cache->chunk_id,
+ cache->data,
+ cache->n_bytes, 1);
+ cache->dirty = 0;
+ cache->object = NULL;
+ }
+ } while (cache && chunk_written > 0);
- if (hasData == 0 && del0) {
- /* Free and return NULL */
+ if (cache)
+ /* Hoosterman, disk full while writing cache out. */
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "yaffs tragedy: no space during cache write");
+}
- yaffs_free_tnode(dev, tn);
- tn = NULL;
+/*yaffs_flush_whole_cache(dev)
+ *
+ *
+ */
+
+void yaffs_flush_whole_cache(struct yaffs_dev *dev)
+{
+ struct yaffs_obj *obj;
+ int n_caches = dev->param.n_caches;
+ int i;
+
+ /* Find a dirty object in the cache and flush it...
+ * until there are no further dirty objects.
+ */
+ do {
+ obj = NULL;
+ for (i = 0; i < n_caches && !obj; i++) {
+ if (dev->cache[i].object && dev->cache[i].dirty)
+ obj = dev->cache[i].object;
}
+ if (obj)
+ yaffs_flush_file_cache(obj);
+ } while (obj);
- }
+}
- return tn;
+/* Grab us a cache chunk for use.
+ * First look for an empty one.
+ * Then look for the least recently used non-dirty one.
+ * Then look for the least recently used dirty one...., flush and look again.
+ */
+static struct yaffs_cache *yaffs_grab_chunk_worker(struct yaffs_dev *dev)
+{
+ int i;
+ if (dev->param.n_caches > 0) {
+ for (i = 0; i < dev->param.n_caches; i++) {
+ if (!dev->cache[i].object)
+ return &dev->cache[i];
+ }
+ }
+ return NULL;
}
-static int yaffs_prune_tree(yaffs_dev_t *dev,
- yaffs_file_s *file_struct)
+static struct yaffs_cache *yaffs_grab_chunk_cache(struct yaffs_dev *dev)
{
+ struct yaffs_cache *cache;
+ struct yaffs_obj *the_obj;
+ int usage;
int i;
- int hasData;
- int done = 0;
- yaffs_tnode_t *tn;
+ int pushout;
- if (file_struct->top_level > 0) {
- file_struct->top =
- yaffs_prune_worker(dev, file_struct->top, file_struct->top_level, 0);
+ if (dev->param.n_caches < 1)
+ return NULL;
+
+ /* Try find a non-dirty one... */
- /* Now we have a tree with all the non-zero branches NULL but the height
- * is the same as it was.
- * Let's see if we can trim internal tnodes to shorten the tree.
- * We can do this if only the 0th element in the tnode is in use
- * (ie all the non-zero are NULL)
+ cache = yaffs_grab_chunk_worker(dev);
+
+ if (!cache) {
+ /* They were all dirty, find the LRU object and flush
+ * its cache, then find again.
+ * NB what's here is not very accurate,
+ * we actually flush the object with the LRU chunk.
*/
- while (file_struct->top_level && !done) {
- tn = file_struct->top;
+ /* With locking we can't assume we can use entry zero,
+ * Set the_obj to a valid pointer for Coverity. */
+ the_obj = dev->cache[0].object;
+ usage = -1;
+ cache = NULL;
+ pushout = -1;
- hasData = 0;
- for (i = 1; i < YAFFS_NTNODES_INTERNAL; i++) {
- if (tn->internal[i])
- hasData++;
+ for (i = 0; i < dev->param.n_caches; i++) {
+ if (dev->cache[i].object &&
+ !dev->cache[i].locked &&
+ (dev->cache[i].last_use < usage ||
+ !cache)) {
+ usage = dev->cache[i].last_use;
+ the_obj = dev->cache[i].object;
+ cache = &dev->cache[i];
+ pushout = i;
}
+ }
- if (!hasData) {
- file_struct->top = tn->internal[0];
- file_struct->top_level--;
- yaffs_free_tnode(dev, tn);
- } else {
- done = 1;
- }
+ if (!cache || cache->dirty) {
+ /* Flush and try again */
+ yaffs_flush_file_cache(the_obj);
+ cache = yaffs_grab_chunk_worker(dev);
}
}
-
- return YAFFS_OK;
+ return cache;
}
-/*-------------------- End of File Structure functions.-------------------*/
-
-
-/* AllocateEmptyObject gets us a clean Object. Tries to make allocate more if we run out */
-static yaffs_obj_t *yaffs_alloc_empty_obj(yaffs_dev_t *dev)
+/* Find a cached chunk */
+static struct yaffs_cache *yaffs_find_chunk_cache(const struct yaffs_obj *obj,
+ int chunk_id)
{
- yaffs_obj_t *obj = yaffs_alloc_raw_obj(dev);
-
- if (obj) {
- dev->n_obj++;
+ struct yaffs_dev *dev = obj->my_dev;
+ int i;
- /* Now sweeten it up... */
+ if (dev->param.n_caches < 1)
+ return NULL;
- memset(obj, 0, sizeof(yaffs_obj_t));
- obj->being_created = 1;
+ for (i = 0; i < dev->param.n_caches; i++) {
+ if (dev->cache[i].object == obj &&
+ dev->cache[i].chunk_id == chunk_id) {
+ dev->cache_hits++;
- obj->my_dev = dev;
- obj->hdr_chunk = 0;
- obj->variant_type = YAFFS_OBJECT_TYPE_UNKNOWN;
- YINIT_LIST_HEAD(&(obj->hard_links));
- YINIT_LIST_HEAD(&(obj->hash_link));
- YINIT_LIST_HEAD(&obj->siblings);
+ return &dev->cache[i];
+ }
+ }
+ return NULL;
+}
+/* Mark the chunk for the least recently used algorithym */
+static void yaffs_use_cache(struct yaffs_dev *dev, struct yaffs_cache *cache,
+ int is_write)
+{
+ int i;
- /* Now make the directory sane */
- if (dev->root_dir) {
- obj->parent = dev->root_dir;
- ylist_add(&(obj->siblings), &dev->root_dir->variant.dir_variant.children);
- }
+ if (dev->param.n_caches < 1)
+ return;
- /* Add it to the lost and found directory.
- * NB Can't put root or lostNFound in lostNFound so
- * check if lostNFound exists first
- */
- if (dev->lost_n_found)
- yaffs_add_obj_to_dir(dev->lost_n_found, obj);
+ if (dev->cache_last_use < 0 ||
+ dev->cache_last_use > 100000000) {
+ /* Reset the cache usages */
+ for (i = 1; i < dev->param.n_caches; i++)
+ dev->cache[i].last_use = 0;
- obj->being_created = 0;
+ dev->cache_last_use = 0;
}
+ dev->cache_last_use++;
+ cache->last_use = dev->cache_last_use;
- dev->checkpoint_blocks_required = 0; /* force recalculation*/
-
- return obj;
+ if (is_write)
+ cache->dirty = 1;
}
-static yaffs_obj_t *yaffs_create_fake_dir(yaffs_dev_t *dev, int number,
- __u32 mode)
+/* Invalidate a single cache page.
+ * Do this when a whole page gets written,
+ * ie the short cache for this page is no longer valid.
+ */
+static void yaffs_invalidate_chunk_cache(struct yaffs_obj *object, int chunk_id)
{
+ struct yaffs_cache *cache;
- yaffs_obj_t *obj =
- yaffs_new_obj(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY);
- if (obj) {
- obj->fake = 1; /* it is fake so it might have no NAND presence... */
- obj->rename_allowed = 0; /* ... and we're not allowed to rename it... */
- obj->unlink_allowed = 0; /* ... or unlink it */
- obj->deleted = 0;
- obj->unlinked = 0;
- obj->yst_mode = mode;
- obj->my_dev = dev;
- obj->hdr_chunk = 0; /* Not a valid chunk. */
+ if (object->my_dev->param.n_caches > 0) {
+ cache = yaffs_find_chunk_cache(object, chunk_id);
+
+ if (cache)
+ cache->object = NULL;
}
+}
- return obj;
+/* Invalidate all the cache pages associated with this object
+ * Do this whenever ther file is deleted or resized.
+ */
+static void yaffs_invalidate_whole_cache(struct yaffs_obj *in)
+{
+ int i;
+ struct yaffs_dev *dev = in->my_dev;
+ if (dev->param.n_caches > 0) {
+ /* Invalidate it. */
+ for (i = 0; i < dev->param.n_caches; i++) {
+ if (dev->cache[i].object == in)
+ dev->cache[i].object = NULL;
+ }
+ }
}
-static void yaffs_unhash_obj(yaffs_obj_t *obj)
+static void yaffs_unhash_obj(struct yaffs_obj *obj)
{
int bucket;
- yaffs_dev_t *dev = obj->my_dev;
+ struct yaffs_dev *dev = obj->my_dev;
/* If it is still linked into the bucket list, free from the list */
- if (!ylist_empty(&obj->hash_link)) {
- ylist_del_init(&obj->hash_link);
+ if (!list_empty(&obj->hash_link)) {
+ list_del_init(&obj->hash_link);
bucket = yaffs_hash_fn(obj->obj_id);
dev->obj_bucket[bucket].count--;
}
}
/* FreeObject frees up a Object and puts it back on the free list */
-static void yaffs_free_obj(yaffs_obj_t *obj)
+static void yaffs_free_obj(struct yaffs_obj *obj)
{
- yaffs_dev_t *dev = obj->my_dev;
+ struct yaffs_dev *dev;
- T(YAFFS_TRACE_OS, (TSTR("FreeObject %p inode %p"TENDSTR), obj, obj->my_inode));
-
- if (!obj)
- YBUG();
+ if (!obj) {
+ BUG();
+ return;
+ }
+ dev = obj->my_dev;
+ yaffs_trace(YAFFS_TRACE_OS, "FreeObject %p inode %p",
+ obj, obj->my_inode);
if (obj->parent)
- YBUG();
- if (!ylist_empty(&obj->siblings))
- YBUG();
-
+ BUG();
+ if (!list_empty(&obj->siblings))
+ BUG();
if (obj->my_inode) {
/* We're still hooked up to a cached inode.
@@ -1320,40 +1633,213 @@ static void yaffs_free_obj(yaffs_obj_t *obj)
yaffs_unhash_obj(obj);
- yaffs_free_raw_obj(dev,obj);
+ yaffs_free_raw_obj(dev, obj);
dev->n_obj--;
- dev->checkpoint_blocks_required = 0; /* force recalculation*/
+ dev->checkpoint_blocks_required = 0; /* force recalculation */
}
-
-void yaffs_handle_defered_free(yaffs_obj_t *obj)
+void yaffs_handle_defered_free(struct yaffs_obj *obj)
{
if (obj->defered_free)
yaffs_free_obj(obj);
}
-static void yaffs_init_tnodes_and_objs(yaffs_dev_t *dev)
+static int yaffs_generic_obj_del(struct yaffs_obj *in)
+{
+ /* Iinvalidate the file's data in the cache, without flushing. */
+ yaffs_invalidate_whole_cache(in);
+
+ if (in->my_dev->param.is_yaffs2 && in->parent != in->my_dev->del_dir) {
+ /* Move to unlinked directory so we have a deletion record */
+ yaffs_change_obj_name(in, in->my_dev->del_dir, _Y("deleted"), 0,
+ 0);
+ }
+
+ yaffs_remove_obj_from_dir(in);
+ yaffs_chunk_del(in->my_dev, in->hdr_chunk, 1, __LINE__);
+ in->hdr_chunk = 0;
+
+ yaffs_free_obj(in);
+ return YAFFS_OK;
+
+}
+
+static void yaffs_soft_del_file(struct yaffs_obj *obj)
+{
+ if (!obj->deleted ||
+ obj->variant_type != YAFFS_OBJECT_TYPE_FILE ||
+ obj->soft_del)
+ return;
+
+ if (obj->n_data_chunks <= 0) {
+ /* Empty file with no duplicate object headers,
+ * just delete it immediately */
+ yaffs_free_tnode(obj->my_dev, obj->variant.file_variant.top);
+ obj->variant.file_variant.top = NULL;
+ yaffs_trace(YAFFS_TRACE_TRACING,
+ "yaffs: Deleting empty file %d",
+ obj->obj_id);
+ yaffs_generic_obj_del(obj);
+ } else {
+ yaffs_soft_del_worker(obj,
+ obj->variant.file_variant.top,
+ obj->variant.
+ file_variant.top_level, 0);
+ obj->soft_del = 1;
+ }
+}
+
+/* Pruning removes any part of the file structure tree that is beyond the
+ * bounds of the file (ie that does not point to chunks).
+ *
+ * A file should only get pruned when its size is reduced.
+ *
+ * Before pruning, the chunks must be pulled from the tree and the
+ * level 0 tnode entries must be zeroed out.
+ * Could also use this for file deletion, but that's probably better handled
+ * by a special case.
+ *
+ * This function is recursive. For levels > 0 the function is called again on
+ * any sub-tree. For level == 0 we just check if the sub-tree has data.
+ * If there is no data in a subtree then it is pruned.
+ */
+
+static struct yaffs_tnode *yaffs_prune_worker(struct yaffs_dev *dev,
+ struct yaffs_tnode *tn, u32 level,
+ int del0)
{
int i;
+ int has_data;
- dev->n_obj = 0;
- dev->n_tnodes = 0;
+ if (!tn)
+ return tn;
+
+ has_data = 0;
+
+ if (level > 0) {
+ for (i = 0; i < YAFFS_NTNODES_INTERNAL; i++) {
+ if (tn->internal[i]) {
+ tn->internal[i] =
+ yaffs_prune_worker(dev,
+ tn->internal[i],
+ level - 1,
+ (i == 0) ? del0 : 1);
+ }
- yaffs_init_raw_tnodes_and_objs(dev);
+ if (tn->internal[i])
+ has_data++;
+ }
+ } else {
+ int tnode_size_u32 = dev->tnode_size / sizeof(u32);
+ u32 *map = (u32 *) tn;
- for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) {
- YINIT_LIST_HEAD(&dev->obj_bucket[i].list);
- dev->obj_bucket[i].count = 0;
+ for (i = 0; !has_data && i < tnode_size_u32; i++) {
+ if (map[i])
+ has_data++;
+ }
+ }
+
+ if (has_data == 0 && del0) {
+ /* Free and return NULL */
+ yaffs_free_tnode(dev, tn);
+ tn = NULL;
+ }
+ return tn;
+}
+
+static int yaffs_prune_tree(struct yaffs_dev *dev,
+ struct yaffs_file_var *file_struct)
+{
+ int i;
+ int has_data;
+ int done = 0;
+ struct yaffs_tnode *tn;
+
+ if (file_struct->top_level < 1)
+ return YAFFS_OK;
+
+ file_struct->top =
+ yaffs_prune_worker(dev, file_struct->top, file_struct->top_level, 0);
+
+ /* Now we have a tree with all the non-zero branches NULL but
+ * the height is the same as it was.
+ * Let's see if we can trim internal tnodes to shorten the tree.
+ * We can do this if only the 0th element in the tnode is in use
+ * (ie all the non-zero are NULL)
+ */
+
+ while (file_struct->top_level && !done) {
+ tn = file_struct->top;
+
+ has_data = 0;
+ for (i = 1; i < YAFFS_NTNODES_INTERNAL; i++) {
+ if (tn->internal[i])
+ has_data++;
+ }
+
+ if (!has_data) {
+ file_struct->top = tn->internal[0];
+ file_struct->top_level--;
+ yaffs_free_tnode(dev, tn);
+ } else {
+ done = 1;
+ }
+ }
+
+ return YAFFS_OK;
+}
+
+/*-------------------- End of File Structure functions.-------------------*/
+
+/* alloc_empty_obj gets us a clean Object.*/
+static struct yaffs_obj *yaffs_alloc_empty_obj(struct yaffs_dev *dev)
+{
+ struct yaffs_obj *obj = yaffs_alloc_raw_obj(dev);
+
+ if (!obj)
+ return obj;
+
+ dev->n_obj++;
+
+ /* Now sweeten it up... */
+
+ memset(obj, 0, sizeof(struct yaffs_obj));
+ obj->being_created = 1;
+
+ obj->my_dev = dev;
+ obj->hdr_chunk = 0;
+ obj->variant_type = YAFFS_OBJECT_TYPE_UNKNOWN;
+ INIT_LIST_HEAD(&(obj->hard_links));
+ INIT_LIST_HEAD(&(obj->hash_link));
+ INIT_LIST_HEAD(&obj->siblings);
+
+ /* Now make the directory sane */
+ if (dev->root_dir) {
+ obj->parent = dev->root_dir;
+ list_add(&(obj->siblings),
+ &dev->root_dir->variant.dir_variant.children);
}
+
+ /* Add it to the lost and found directory.
+ * NB Can't put root or lost-n-found in lost-n-found so
+ * check if lost-n-found exists first
+ */
+ if (dev->lost_n_found)
+ yaffs_add_obj_to_dir(dev->lost_n_found, obj);
+
+ obj->being_created = 0;
+
+ dev->checkpoint_blocks_required = 0; /* force recalculation */
+
+ return obj;
}
-static int yaffs_find_nice_bucket(yaffs_dev_t *dev)
+static int yaffs_find_nice_bucket(struct yaffs_dev *dev)
{
int i;
int l = 999;
int lowest = 999999;
-
/* Search for the shortest list or one that
* isn't too long.
*/
@@ -1365,82 +1851,72 @@ static int yaffs_find_nice_bucket(yaffs_dev_t *dev)
lowest = dev->obj_bucket[dev->bucket_finder].count;
l = dev->bucket_finder;
}
-
}
return l;
}
-static int yaffs_new_obj_id(yaffs_dev_t *dev)
+static int yaffs_new_obj_id(struct yaffs_dev *dev)
{
int bucket = yaffs_find_nice_bucket(dev);
+ int found = 0;
+ struct list_head *i;
+ u32 n = (u32) bucket;
/* Now find an object value that has not already been taken
* by scanning the list.
*/
- int found = 0;
- struct ylist_head *i;
-
- __u32 n = (__u32) bucket;
-
- /* yaffs_check_obj_hash_sane(); */
-
while (!found) {
found = 1;
n += YAFFS_NOBJECT_BUCKETS;
if (1 || dev->obj_bucket[bucket].count > 0) {
- ylist_for_each(i, &dev->obj_bucket[bucket].list) {
+ list_for_each(i, &dev->obj_bucket[bucket].list) {
/* If there is already one in the list */
- if (i && ylist_entry(i, yaffs_obj_t,
- hash_link)->obj_id == n) {
+ if (i && list_entry(i, struct yaffs_obj,
+ hash_link)->obj_id == n) {
found = 0;
}
}
}
}
-
return n;
}
-static void yaffs_hash_obj(yaffs_obj_t *in)
+static void yaffs_hash_obj(struct yaffs_obj *in)
{
int bucket = yaffs_hash_fn(in->obj_id);
- yaffs_dev_t *dev = in->my_dev;
+ struct yaffs_dev *dev = in->my_dev;
- ylist_add(&in->hash_link, &dev->obj_bucket[bucket].list);
+ list_add(&in->hash_link, &dev->obj_bucket[bucket].list);
dev->obj_bucket[bucket].count++;
}
-yaffs_obj_t *yaffs_find_by_number(yaffs_dev_t *dev, __u32 number)
+struct yaffs_obj *yaffs_find_by_number(struct yaffs_dev *dev, u32 number)
{
int bucket = yaffs_hash_fn(number);
- struct ylist_head *i;
- yaffs_obj_t *in;
+ struct list_head *i;
+ struct yaffs_obj *in;
- ylist_for_each(i, &dev->obj_bucket[bucket].list) {
+ list_for_each(i, &dev->obj_bucket[bucket].list) {
/* Look if it is in the list */
- if (i) {
- in = ylist_entry(i, yaffs_obj_t, hash_link);
- if (in->obj_id == number) {
-
- /* Don't tell the VFS about this one if it is defered free */
- if (in->defered_free)
- return NULL;
-
- return in;
- }
+ in = list_entry(i, struct yaffs_obj, hash_link);
+ if (in->obj_id == number) {
+ /* Don't show if it is defered free */
+ if (in->defered_free)
+ return NULL;
+ return in;
}
}
return NULL;
}
-yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number,
- yaffs_obj_type type)
+static struct yaffs_obj *yaffs_new_obj(struct yaffs_dev *dev, int number,
+ enum yaffs_obj_type type)
{
- yaffs_obj_t *theObject=NULL;
- yaffs_tnode_t *tn = NULL;
+ struct yaffs_obj *the_obj = NULL;
+ struct yaffs_tnode *tn = NULL;
if (number < 0)
number = yaffs_new_obj_id(dev);
@@ -1451,876 +1927,666 @@ yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number,
return NULL;
}
- theObject = yaffs_alloc_empty_obj(dev);
- if (!theObject){
- if(tn)
- yaffs_free_tnode(dev,tn);
+ the_obj = yaffs_alloc_empty_obj(dev);
+ if (!the_obj) {
+ if (tn)
+ yaffs_free_tnode(dev, tn);
return NULL;
}
+ the_obj->fake = 0;
+ the_obj->rename_allowed = 1;
+ the_obj->unlink_allowed = 1;
+ the_obj->obj_id = number;
+ yaffs_hash_obj(the_obj);
+ the_obj->variant_type = type;
+ yaffs_load_current_time(the_obj, 1, 1);
- if (theObject) {
- theObject->fake = 0;
- theObject->rename_allowed = 1;
- theObject->unlink_allowed = 1;
- theObject->obj_id = number;
- yaffs_hash_obj(theObject);
- theObject->variant_type = type;
-#ifdef CONFIG_YAFFS_WINCE
- yfsd_win_file_time_now(theObject->win_atime);
- theObject->win_ctime[0] = theObject->win_mtime[0] =
- theObject->win_atime[0];
- theObject->win_ctime[1] = theObject->win_mtime[1] =
- theObject->win_atime[1];
+ switch (type) {
+ case YAFFS_OBJECT_TYPE_FILE:
+ the_obj->variant.file_variant.file_size = 0;
+ the_obj->variant.file_variant.scanned_size = 0;
+ the_obj->variant.file_variant.shrink_size =
+ yaffs_max_file_size(dev);
+ the_obj->variant.file_variant.top_level = 0;
+ the_obj->variant.file_variant.top = tn;
+ break;
+ case YAFFS_OBJECT_TYPE_DIRECTORY:
+ INIT_LIST_HEAD(&the_obj->variant.dir_variant.children);
+ INIT_LIST_HEAD(&the_obj->variant.dir_variant.dirty);
+ break;
+ case YAFFS_OBJECT_TYPE_SYMLINK:
+ case YAFFS_OBJECT_TYPE_HARDLINK:
+ case YAFFS_OBJECT_TYPE_SPECIAL:
+ /* No action required */
+ break;
+ case YAFFS_OBJECT_TYPE_UNKNOWN:
+ /* todo this should not happen */
+ break;
+ }
+ return the_obj;
+}
-#else
+static struct yaffs_obj *yaffs_create_fake_dir(struct yaffs_dev *dev,
+ int number, u32 mode)
+{
- theObject->yst_atime = theObject->yst_mtime =
- theObject->yst_ctime = Y_CURRENT_TIME;
-#endif
- switch (type) {
- case YAFFS_OBJECT_TYPE_FILE:
- theObject->variant.file_variant.file_size = 0;
- theObject->variant.file_variant.scanned_size = 0;
- theObject->variant.file_variant.shrink_size = 0xFFFFFFFF; /* max __u32 */
- theObject->variant.file_variant.top_level = 0;
- theObject->variant.file_variant.top = tn;
- break;
- case YAFFS_OBJECT_TYPE_DIRECTORY:
- YINIT_LIST_HEAD(&theObject->variant.dir_variant.
- children);
- YINIT_LIST_HEAD(&theObject->variant.dir_variant.
- dirty);
- break;
- case YAFFS_OBJECT_TYPE_SYMLINK:
- case YAFFS_OBJECT_TYPE_HARDLINK:
- case YAFFS_OBJECT_TYPE_SPECIAL:
- /* No action required */
- break;
- case YAFFS_OBJECT_TYPE_UNKNOWN:
- /* todo this should not happen */
- break;
- }
- }
+ struct yaffs_obj *obj =
+ yaffs_new_obj(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY);
+
+ if (!obj)
+ return NULL;
- return theObject;
+ obj->fake = 1; /* it is fake so it might not use NAND */
+ obj->rename_allowed = 0;
+ obj->unlink_allowed = 0;
+ obj->deleted = 0;
+ obj->unlinked = 0;
+ obj->yst_mode = mode;
+ obj->my_dev = dev;
+ obj->hdr_chunk = 0; /* Not a valid chunk. */
+ return obj;
+
+}
+
+
+static void yaffs_init_tnodes_and_objs(struct yaffs_dev *dev)
+{
+ int i;
+
+ dev->n_obj = 0;
+ dev->n_tnodes = 0;
+ yaffs_init_raw_tnodes_and_objs(dev);
+
+ for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) {
+ INIT_LIST_HEAD(&dev->obj_bucket[i].list);
+ dev->obj_bucket[i].count = 0;
+ }
}
-yaffs_obj_t *yaffs_find_or_create_by_number(yaffs_dev_t *dev,
- int number,
- yaffs_obj_type type)
+struct yaffs_obj *yaffs_find_or_create_by_number(struct yaffs_dev *dev,
+ int number,
+ enum yaffs_obj_type type)
{
- yaffs_obj_t *theObject = NULL;
+ struct yaffs_obj *the_obj = NULL;
if (number > 0)
- theObject = yaffs_find_by_number(dev, number);
+ the_obj = yaffs_find_by_number(dev, number);
- if (!theObject)
- theObject = yaffs_new_obj(dev, number, type);
+ if (!the_obj)
+ the_obj = yaffs_new_obj(dev, number, type);
- return theObject;
+ return the_obj;
}
-
YCHAR *yaffs_clone_str(const YCHAR *str)
{
- YCHAR *newStr = NULL;
+ YCHAR *new_str = NULL;
int len;
if (!str)
str = _Y("");
- len = yaffs_strnlen(str,YAFFS_MAX_ALIAS_LENGTH);
- newStr = YMALLOC((len + 1) * sizeof(YCHAR));
- if (newStr){
- yaffs_strncpy(newStr, str,len);
- newStr[len] = 0;
+ len = strnlen(str, YAFFS_MAX_ALIAS_LENGTH);
+ new_str = kmalloc((len + 1) * sizeof(YCHAR), GFP_NOFS);
+ if (new_str) {
+ strncpy(new_str, str, len);
+ new_str[len] = 0;
}
- return newStr;
+ return new_str;
}
+/*
+ *yaffs_update_parent() handles fixing a directories mtime and ctime when a new
+ * link (ie. name) is created or deleted in the directory.
+ *
+ * ie.
+ * create dir/a : update dir's mtime/ctime
+ * rm dir/a: update dir's mtime/ctime
+ * modify dir/a: don't update dir's mtimme/ctime
+ *
+ * This can be handled immediately or defered. Defering helps reduce the number
+ * of updates when many files in a directory are changed within a brief period.
+ *
+ * If the directory updating is defered then yaffs_update_dirty_dirs must be
+ * called periodically.
+ */
+
+static void yaffs_update_parent(struct yaffs_obj *obj)
+{
+ struct yaffs_dev *dev;
+
+ if (!obj)
+ return;
+ dev = obj->my_dev;
+ obj->dirty = 1;
+ yaffs_load_current_time(obj, 0, 1);
+ if (dev->param.defered_dir_update) {
+ struct list_head *link = &obj->variant.dir_variant.dirty;
+
+ if (list_empty(link)) {
+ list_add(link, &dev->dirty_dirs);
+ yaffs_trace(YAFFS_TRACE_BACKGROUND,
+ "Added object %d to dirty directories",
+ obj->obj_id);
+ }
+
+ } else {
+ yaffs_update_oh(obj, NULL, 0, 0, 0, NULL);
+ }
+}
+
+void yaffs_update_dirty_dirs(struct yaffs_dev *dev)
+{
+ struct list_head *link;
+ struct yaffs_obj *obj;
+ struct yaffs_dir_var *d_s;
+ union yaffs_obj_var *o_v;
+
+ yaffs_trace(YAFFS_TRACE_BACKGROUND, "Update dirty directories");
+
+ while (!list_empty(&dev->dirty_dirs)) {
+ link = dev->dirty_dirs.next;
+ list_del_init(link);
+
+ d_s = list_entry(link, struct yaffs_dir_var, dirty);
+ o_v = list_entry(d_s, union yaffs_obj_var, dir_variant);
+ obj = list_entry(o_v, struct yaffs_obj, variant);
+
+ yaffs_trace(YAFFS_TRACE_BACKGROUND, "Update directory %d",
+ obj->obj_id);
+
+ if (obj->dirty)
+ yaffs_update_oh(obj, NULL, 0, 0, 0, NULL);
+ }
+}
/*
* Mknod (create) a new object.
* equiv_obj only has meaning for a hard link;
- * aliasString only has meaning for a symlink.
+ * alias_str only has meaning for a symlink.
* rdev only has meaning for devices (a subset of special objects)
*/
-static yaffs_obj_t *yaffs_create_obj(yaffs_obj_type type,
- yaffs_obj_t *parent,
- const YCHAR *name,
- __u32 mode,
- __u32 uid,
- __u32 gid,
- yaffs_obj_t *equiv_obj,
- const YCHAR *aliasString, __u32 rdev)
+static struct yaffs_obj *yaffs_create_obj(enum yaffs_obj_type type,
+ struct yaffs_obj *parent,
+ const YCHAR *name,
+ u32 mode,
+ u32 uid,
+ u32 gid,
+ struct yaffs_obj *equiv_obj,
+ const YCHAR *alias_str, u32 rdev)
{
- yaffs_obj_t *in;
+ struct yaffs_obj *in;
YCHAR *str = NULL;
+ struct yaffs_dev *dev = parent->my_dev;
- yaffs_dev_t *dev = parent->my_dev;
-
- /* Check if the entry exists. If it does then fail the call since we don't want a dup.*/
+ /* Check if the entry exists.
+ * If it does then fail the call since we don't want a dup. */
if (yaffs_find_by_name(parent, name))
return NULL;
if (type == YAFFS_OBJECT_TYPE_SYMLINK) {
- str = yaffs_clone_str(aliasString);
+ str = yaffs_clone_str(alias_str);
if (!str)
return NULL;
}
in = yaffs_new_obj(dev, -1, type);
- if (!in){
- if(str)
- YFREE(str);
+ if (!in) {
+ kfree(str);
return NULL;
}
+ in->hdr_chunk = 0;
+ in->valid = 1;
+ in->variant_type = type;
+ in->yst_mode = mode;
+ yaffs_attribs_init(in, gid, uid, rdev);
+ in->n_data_chunks = 0;
- if (in) {
- in->hdr_chunk = 0;
- in->valid = 1;
- in->variant_type = type;
-
- in->yst_mode = mode;
-
-#ifdef CONFIG_YAFFS_WINCE
- yfsd_win_file_time_now(in->win_atime);
- in->win_ctime[0] = in->win_mtime[0] = in->win_atime[0];
- in->win_ctime[1] = in->win_mtime[1] = in->win_atime[1];
-
-#else
- in->yst_atime = in->yst_mtime = in->yst_ctime = Y_CURRENT_TIME;
-
- in->yst_rdev = rdev;
- in->yst_uid = uid;
- in->yst_gid = gid;
-#endif
- in->n_data_chunks = 0;
-
- yaffs_set_obj_name(in, name);
- in->dirty = 1;
+ yaffs_set_obj_name(in, name);
+ in->dirty = 1;
- yaffs_add_obj_to_dir(parent, in);
+ yaffs_add_obj_to_dir(parent, in);
- in->my_dev = parent->my_dev;
+ in->my_dev = parent->my_dev;
- switch (type) {
- case YAFFS_OBJECT_TYPE_SYMLINK:
- in->variant.symlink_variant.alias = str;
- break;
- case YAFFS_OBJECT_TYPE_HARDLINK:
- in->variant.hardlink_variant.equiv_obj =
- equiv_obj;
- in->variant.hardlink_variant.equiv_id =
- equiv_obj->obj_id;
- ylist_add(&in->hard_links, &equiv_obj->hard_links);
- break;
- case YAFFS_OBJECT_TYPE_FILE:
- case YAFFS_OBJECT_TYPE_DIRECTORY:
- case YAFFS_OBJECT_TYPE_SPECIAL:
- case YAFFS_OBJECT_TYPE_UNKNOWN:
- /* do nothing */
- break;
- }
+ switch (type) {
+ case YAFFS_OBJECT_TYPE_SYMLINK:
+ in->variant.symlink_variant.alias = str;
+ break;
+ case YAFFS_OBJECT_TYPE_HARDLINK:
+ in->variant.hardlink_variant.equiv_obj = equiv_obj;
+ in->variant.hardlink_variant.equiv_id = equiv_obj->obj_id;
+ list_add(&in->hard_links, &equiv_obj->hard_links);
+ break;
+ case YAFFS_OBJECT_TYPE_FILE:
+ case YAFFS_OBJECT_TYPE_DIRECTORY:
+ case YAFFS_OBJECT_TYPE_SPECIAL:
+ case YAFFS_OBJECT_TYPE_UNKNOWN:
+ /* do nothing */
+ break;
+ }
- if (yaffs_update_oh(in, name, 0, 0, 0, NULL) < 0) {
- /* Could not create the object header, fail the creation */
- yaffs_del_obj(in);
- in = NULL;
- }
+ if (yaffs_update_oh(in, name, 0, 0, 0, NULL) < 0) {
+ /* Could not create the object header, fail */
+ yaffs_del_obj(in);
+ in = NULL;
+ }
+ if (in)
yaffs_update_parent(parent);
- }
return in;
}
-yaffs_obj_t *yaffs_create_file(yaffs_obj_t *parent, const YCHAR *name,
- __u32 mode, __u32 uid, __u32 gid)
+struct yaffs_obj *yaffs_create_file(struct yaffs_obj *parent,
+ const YCHAR *name, u32 mode, u32 uid,
+ u32 gid)
{
return yaffs_create_obj(YAFFS_OBJECT_TYPE_FILE, parent, name, mode,
uid, gid, NULL, NULL, 0);
}
-yaffs_obj_t *yaffs_create_dir(yaffs_obj_t *parent, const YCHAR *name,
- __u32 mode, __u32 uid, __u32 gid)
+struct yaffs_obj *yaffs_create_dir(struct yaffs_obj *parent, const YCHAR *name,
+ u32 mode, u32 uid, u32 gid)
{
return yaffs_create_obj(YAFFS_OBJECT_TYPE_DIRECTORY, parent, name,
- mode, uid, gid, NULL, NULL, 0);
+ mode, uid, gid, NULL, NULL, 0);
}
-yaffs_obj_t *yaffs_create_special(yaffs_obj_t *parent, const YCHAR *name,
- __u32 mode, __u32 uid, __u32 gid, __u32 rdev)
+struct yaffs_obj *yaffs_create_special(struct yaffs_obj *parent,
+ const YCHAR *name, u32 mode, u32 uid,
+ u32 gid, u32 rdev)
{
return yaffs_create_obj(YAFFS_OBJECT_TYPE_SPECIAL, parent, name, mode,
- uid, gid, NULL, NULL, rdev);
+ uid, gid, NULL, NULL, rdev);
}
-yaffs_obj_t *yaffs_create_symlink(yaffs_obj_t *parent, const YCHAR *name,
- __u32 mode, __u32 uid, __u32 gid,
- const YCHAR *alias)
+struct yaffs_obj *yaffs_create_symlink(struct yaffs_obj *parent,
+ const YCHAR *name, u32 mode, u32 uid,
+ u32 gid, const YCHAR *alias)
{
return yaffs_create_obj(YAFFS_OBJECT_TYPE_SYMLINK, parent, name, mode,
uid, gid, NULL, alias, 0);
}
/* yaffs_link_obj returns the object id of the equivalent object.*/
-yaffs_obj_t *yaffs_link_obj(yaffs_obj_t *parent, const YCHAR *name,
- yaffs_obj_t *equiv_obj)
+struct yaffs_obj *yaffs_link_obj(struct yaffs_obj *parent, const YCHAR * name,
+ struct yaffs_obj *equiv_obj)
{
- /* Get the real object in case we were fed a hard link as an equivalent object */
+ /* Get the real object in case we were fed a hard link obj */
equiv_obj = yaffs_get_equivalent_obj(equiv_obj);
- if (yaffs_create_obj
- (YAFFS_OBJECT_TYPE_HARDLINK, parent, name, 0, 0, 0,
- equiv_obj, NULL, 0)) {
+ if (yaffs_create_obj(YAFFS_OBJECT_TYPE_HARDLINK,
+ parent, name, 0, 0, 0,
+ equiv_obj, NULL, 0))
return equiv_obj;
- } else {
- return NULL;
- }
-
-}
-
-static int yaffs_change_obj_name(yaffs_obj_t *obj, yaffs_obj_t *new_dir,
- const YCHAR *new_name, int force, int shadows)
-{
- int unlinkOp;
- int deleteOp;
-
- yaffs_obj_t *existingTarget;
-
- if (new_dir == NULL)
- new_dir = obj->parent; /* use the old directory */
-
- if (new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR
- ("tragedy: yaffs_change_obj_name: new_dir is not a directory"
- TENDSTR)));
- YBUG();
- }
-
- /* TODO: Do we need this different handling for YAFFS2 and YAFFS1?? */
- if (obj->my_dev->param.is_yaffs2)
- unlinkOp = (new_dir == obj->my_dev->unlinked_dir);
- else
- unlinkOp = (new_dir == obj->my_dev->unlinked_dir
- && obj->variant_type == YAFFS_OBJECT_TYPE_FILE);
- deleteOp = (new_dir == obj->my_dev->del_dir);
-
- existingTarget = yaffs_find_by_name(new_dir, new_name);
-
- /* If the object is a file going into the unlinked directory,
- * then it is OK to just stuff it in since duplicate names are allowed.
- * else only proceed if the new name does not exist and if we're putting
- * it into a directory.
- */
- if ((unlinkOp ||
- deleteOp ||
- force ||
- (shadows > 0) ||
- !existingTarget) &&
- new_dir->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) {
- yaffs_set_obj_name(obj, new_name);
- obj->dirty = 1;
-
- yaffs_add_obj_to_dir(new_dir, obj);
-
- if (unlinkOp)
- obj->unlinked = 1;
-
- /* If it is a deletion then we mark it as a shrink for gc purposes. */
- if (yaffs_update_oh(obj, new_name, 0, deleteOp, shadows, NULL) >= 0)
- return YAFFS_OK;
- }
+ return NULL;
- return YAFFS_FAIL;
}
-int yaffs_rename_obj(yaffs_obj_t *old_dir, const YCHAR *old_name,
- yaffs_obj_t *new_dir, const YCHAR *new_name)
-{
- yaffs_obj_t *obj = NULL;
- yaffs_obj_t *existingTarget = NULL;
- int force = 0;
- int result;
- yaffs_dev_t *dev;
- if (!old_dir || old_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY)
- YBUG();
- if (!new_dir || new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY)
- YBUG();
+/*---------------------- Block Management and Page Allocation -------------*/
- dev = old_dir->my_dev;
-
-#ifdef CONFIG_YAFFS_CASE_INSENSITIVE
- /* Special case for case insemsitive systems (eg. WinCE).
- * While look-up is case insensitive, the name isn't.
- * Therefore we might want to change x.txt to X.txt
- */
- if (old_dir == new_dir && yaffs_strcmp(old_name, new_name) == 0)
- force = 1;
-#endif
-
- if(yaffs_strnlen(new_name,YAFFS_MAX_NAME_LENGTH+1) > YAFFS_MAX_NAME_LENGTH)
- /* ENAMETOOLONG */
- return YAFFS_FAIL;
-
- obj = yaffs_find_by_name(old_dir, old_name);
-
- if (obj && obj->rename_allowed) {
-
- /* Now do the handling for an existing target, if there is one */
+static void yaffs_deinit_blocks(struct yaffs_dev *dev)
+{
+ if (dev->block_info_alt && dev->block_info)
+ vfree(dev->block_info);
+ else
+ kfree(dev->block_info);
- existingTarget = yaffs_find_by_name(new_dir, new_name);
- if (existingTarget &&
- existingTarget->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY &&
- !ylist_empty(&existingTarget->variant.dir_variant.children)) {
- /* There is a target that is a non-empty directory, so we fail */
- return YAFFS_FAIL; /* EEXIST or ENOTEMPTY */
- } else if (existingTarget && existingTarget != obj) {
- /* Nuke the target first, using shadowing,
- * but only if it isn't the same object.
- *
- * Note we must disable gc otherwise it can mess up the shadowing.
- *
- */
- dev->gc_disable=1;
- yaffs_change_obj_name(obj, new_dir, new_name, force,
- existingTarget->obj_id);
- existingTarget->is_shadowed = 1;
- yaffs_unlink_obj(existingTarget);
- dev->gc_disable=0;
- }
+ dev->block_info_alt = 0;
- result = yaffs_change_obj_name(obj, new_dir, new_name, 1, 0);
+ dev->block_info = NULL;
- yaffs_update_parent(old_dir);
- if(new_dir != old_dir)
- yaffs_update_parent(new_dir);
-
- return result;
- }
- return YAFFS_FAIL;
+ if (dev->chunk_bits_alt && dev->chunk_bits)
+ vfree(dev->chunk_bits);
+ else
+ kfree(dev->chunk_bits);
+ dev->chunk_bits_alt = 0;
+ dev->chunk_bits = NULL;
}
-/*------------------------- Block Management and Page Allocation ----------------*/
-
-static int yaffs_init_blocks(yaffs_dev_t *dev)
+static int yaffs_init_blocks(struct yaffs_dev *dev)
{
- int nBlocks = dev->internal_end_block - dev->internal_start_block + 1;
+ int n_blocks = dev->internal_end_block - dev->internal_start_block + 1;
dev->block_info = NULL;
dev->chunk_bits = NULL;
-
dev->alloc_block = -1; /* force it to get a new one */
/* If the first allocation strategy fails, thry the alternate one */
- dev->block_info = YMALLOC(nBlocks * sizeof(yaffs_block_info_t));
+ dev->block_info =
+ kmalloc(n_blocks * sizeof(struct yaffs_block_info), GFP_NOFS);
if (!dev->block_info) {
- dev->block_info = YMALLOC_ALT(nBlocks * sizeof(yaffs_block_info_t));
+ dev->block_info =
+ vmalloc(n_blocks * sizeof(struct yaffs_block_info));
dev->block_info_alt = 1;
- } else
+ } else {
dev->block_info_alt = 0;
-
- if (dev->block_info) {
- /* Set up dynamic blockinfo stuff. */
- dev->chunk_bit_stride = (dev->param.chunks_per_block + 7) / 8; /* round up bytes */
- dev->chunk_bits = YMALLOC(dev->chunk_bit_stride * nBlocks);
- if (!dev->chunk_bits) {
- dev->chunk_bits = YMALLOC_ALT(dev->chunk_bit_stride * nBlocks);
- dev->chunk_bits_alt = 1;
- } else
- dev->chunk_bits_alt = 0;
}
- if (dev->block_info && dev->chunk_bits) {
- memset(dev->block_info, 0, nBlocks * sizeof(yaffs_block_info_t));
- memset(dev->chunk_bits, 0, dev->chunk_bit_stride * nBlocks);
- return YAFFS_OK;
- }
-
- return YAFFS_FAIL;
-}
+ if (!dev->block_info)
+ goto alloc_error;
-static void yaffs_deinit_blocks(yaffs_dev_t *dev)
-{
- if (dev->block_info_alt && dev->block_info)
- YFREE_ALT(dev->block_info);
- else if (dev->block_info)
- YFREE(dev->block_info);
+ /* Set up dynamic blockinfo stuff. Round up bytes. */
+ dev->chunk_bit_stride = (dev->param.chunks_per_block + 7) / 8;
+ dev->chunk_bits =
+ kmalloc(dev->chunk_bit_stride * n_blocks, GFP_NOFS);
+ if (!dev->chunk_bits) {
+ dev->chunk_bits =
+ vmalloc(dev->chunk_bit_stride * n_blocks);
+ dev->chunk_bits_alt = 1;
+ } else {
+ dev->chunk_bits_alt = 0;
+ }
+ if (!dev->chunk_bits)
+ goto alloc_error;
- dev->block_info_alt = 0;
- dev->block_info = NULL;
+ memset(dev->block_info, 0, n_blocks * sizeof(struct yaffs_block_info));
+ memset(dev->chunk_bits, 0, dev->chunk_bit_stride * n_blocks);
+ return YAFFS_OK;
- if (dev->chunk_bits_alt && dev->chunk_bits)
- YFREE_ALT(dev->chunk_bits);
- else if (dev->chunk_bits)
- YFREE(dev->chunk_bits);
- dev->chunk_bits_alt = 0;
- dev->chunk_bits = NULL;
+alloc_error:
+ yaffs_deinit_blocks(dev);
+ return YAFFS_FAIL;
}
-void yaffs_block_became_dirty(yaffs_dev_t *dev, int block_no)
-{
- yaffs_block_info_t *bi = yaffs_get_block_info(dev, block_no);
- int erasedOk = 0;
+void yaffs_block_became_dirty(struct yaffs_dev *dev, int block_no)
+{
+ struct yaffs_block_info *bi = yaffs_get_block_info(dev, block_no);
+ int erased_ok = 0;
+ int i;
/* If the block is still healthy erase it and mark as clean.
* If the block has had a data failure, then retire it.
*/
- T(YAFFS_TRACE_GC | YAFFS_TRACE_ERASE,
- (TSTR("yaffs_block_became_dirty block %d state %d %s"TENDSTR),
- block_no, bi->block_state, (bi->needs_retiring) ? "needs retiring" : ""));
+ yaffs_trace(YAFFS_TRACE_GC | YAFFS_TRACE_ERASE,
+ "yaffs_block_became_dirty block %d state %d %s",
+ block_no, bi->block_state,
+ (bi->needs_retiring) ? "needs retiring" : "");
- yaffs2_clear_oldest_dirty_seq(dev,bi);
+ yaffs2_clear_oldest_dirty_seq(dev, bi);
bi->block_state = YAFFS_BLOCK_STATE_DIRTY;
- /* If this is the block being garbage collected then stop gc'ing this block */
- if(block_no == dev->gc_block)
+ /* If this is the block being garbage collected then stop gc'ing */
+ if (block_no == dev->gc_block)
dev->gc_block = 0;
- /* If this block is currently the best candidate for gc then drop as a candidate */
- if(block_no == dev->gc_dirtiest){
+ /* If this block is currently the best candidate for gc
+ * then drop as a candidate */
+ if (block_no == dev->gc_dirtiest) {
dev->gc_dirtiest = 0;
dev->gc_pages_in_use = 0;
}
if (!bi->needs_retiring) {
yaffs2_checkpt_invalidate(dev);
- erasedOk = yaffs_erase_block(dev, block_no);
- if (!erasedOk) {
+ erased_ok = yaffs_erase_block(dev, block_no);
+ if (!erased_ok) {
dev->n_erase_failures++;
- T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
- (TSTR("**>> Erasure failed %d" TENDSTR), block_no));
+ yaffs_trace(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
+ "**>> Erasure failed %d", block_no);
}
}
- if (erasedOk &&
- ((yaffs_trace_mask & YAFFS_TRACE_ERASE) || !yaffs_skip_verification(dev))) {
- int i;
+ /* Verify erasure if needed */
+ if (erased_ok &&
+ ((yaffs_trace_mask & YAFFS_TRACE_ERASE) ||
+ !yaffs_skip_verification(dev))) {
for (i = 0; i < dev->param.chunks_per_block; i++) {
- if (!yaffs_check_chunk_erased
- (dev, block_no * dev->param.chunks_per_block + i)) {
- T(YAFFS_TRACE_ERROR,
- (TSTR
- (">>Block %d erasure supposedly OK, but chunk %d not erased"
- TENDSTR), block_no, i));
+ if (!yaffs_check_chunk_erased(dev,
+ block_no * dev->param.chunks_per_block + i)) {
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ ">>Block %d erasure supposedly OK, but chunk %d not erased",
+ block_no, i);
}
}
}
- if (erasedOk) {
- /* Clean it up... */
- bi->block_state = YAFFS_BLOCK_STATE_EMPTY;
- bi->seq_number = 0;
- dev->n_erased_blocks++;
- bi->pages_in_use = 0;
- bi->soft_del_pages = 0;
- bi->has_shrink_hdr = 0;
- bi->skip_erased_check = 1; /* This is clean, so no need to check */
- bi->gc_prioritise = 0;
- yaffs_clear_chunk_bits(dev, block_no);
-
- T(YAFFS_TRACE_ERASE,
- (TSTR("Erased block %d" TENDSTR), block_no));
- } else {
- dev->n_free_chunks -= dev->param.chunks_per_block; /* We lost a block of free space */
-
+ if (!erased_ok) {
+ /* We lost a block of free space */
+ dev->n_free_chunks -= dev->param.chunks_per_block;
yaffs_retire_block(dev, block_no);
- T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
- (TSTR("**>> Block %d retired" TENDSTR), block_no));
- }
-}
-
-static int yaffs_find_alloc_block(yaffs_dev_t *dev)
-{
- int i;
-
- yaffs_block_info_t *bi;
-
- if (dev->n_erased_blocks < 1) {
- /* Hoosterman we've got a problem.
- * Can't get space to gc
- */
- T(YAFFS_TRACE_ERROR,
- (TSTR("yaffs tragedy: no more erased blocks" TENDSTR)));
-
- return -1;
- }
-
- /* Find an empty block. */
-
- for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) {
- dev->alloc_block_finder++;
- if (dev->alloc_block_finder < dev->internal_start_block
- || dev->alloc_block_finder > dev->internal_end_block) {
- dev->alloc_block_finder = dev->internal_start_block;
- }
-
- bi = yaffs_get_block_info(dev, dev->alloc_block_finder);
-
- if (bi->block_state == YAFFS_BLOCK_STATE_EMPTY) {
- bi->block_state = YAFFS_BLOCK_STATE_ALLOCATING;
- dev->seq_number++;
- bi->seq_number = dev->seq_number;
- dev->n_erased_blocks--;
- T(YAFFS_TRACE_ALLOCATE,
- (TSTR("Allocated block %d, seq %d, %d left" TENDSTR),
- dev->alloc_block_finder, dev->seq_number,
- dev->n_erased_blocks));
- return dev->alloc_block_finder;
- }
+ yaffs_trace(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
+ "**>> Block %d retired", block_no);
+ return;
}
- T(YAFFS_TRACE_ALWAYS,
- (TSTR
- ("yaffs tragedy: no more erased blocks, but there should have been %d"
- TENDSTR), dev->n_erased_blocks));
-
- return -1;
-}
-
-
-/*
- * Check if there's space to allocate...
- * Thinks.... do we need top make this ths same as yaffs_get_free_chunks()?
- */
-int yaffs_check_alloc_available(yaffs_dev_t *dev, int n_chunks)
-{
- int reservedChunks;
- int reservedBlocks = dev->param.n_reserved_blocks;
- int checkpointBlocks;
-
- checkpointBlocks = yaffs_calc_checkpt_blocks_required(dev);
+ /* Clean it up... */
+ bi->block_state = YAFFS_BLOCK_STATE_EMPTY;
+ bi->seq_number = 0;
+ dev->n_erased_blocks++;
+ bi->pages_in_use = 0;
+ bi->soft_del_pages = 0;
+ bi->has_shrink_hdr = 0;
+ bi->skip_erased_check = 1; /* Clean, so no need to check */
+ bi->gc_prioritise = 0;
+ bi->has_summary = 0;
- reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->param.chunks_per_block);
+ yaffs_clear_chunk_bits(dev, block_no);
- return (dev->n_free_chunks > (reservedChunks + n_chunks));
+ yaffs_trace(YAFFS_TRACE_ERASE, "Erased block %d", block_no);
}
-static int yaffs_alloc_chunk(yaffs_dev_t *dev, int useReserve,
- yaffs_block_info_t **blockUsedPtr)
+static inline int yaffs_gc_process_chunk(struct yaffs_dev *dev,
+ struct yaffs_block_info *bi,
+ int old_chunk, u8 *buffer)
{
- int retVal;
- yaffs_block_info_t *bi;
+ int new_chunk;
+ int mark_flash = 1;
+ struct yaffs_ext_tags tags;
+ struct yaffs_obj *object;
+ int matching_chunk;
+ int ret_val = YAFFS_OK;
- if (dev->alloc_block < 0) {
- /* Get next block to allocate off */
- dev->alloc_block = yaffs_find_alloc_block(dev);
- dev->alloc_page = 0;
- }
+ memset(&tags, 0, sizeof(tags));
+ yaffs_rd_chunk_tags_nand(dev, old_chunk,
+ buffer, &tags);
+ object = yaffs_find_by_number(dev, tags.obj_id);
- if (!useReserve && !yaffs_check_alloc_available(dev, 1)) {
- /* Not enough space to allocate unless we're allowed to use the reserve. */
- return -1;
- }
-
- if (dev->n_erased_blocks < dev->param.n_reserved_blocks
- && dev->alloc_page == 0) {
- T(YAFFS_TRACE_ALLOCATE, (TSTR("Allocating reserve" TENDSTR)));
- }
+ yaffs_trace(YAFFS_TRACE_GC_DETAIL,
+ "Collecting chunk in block %d, %d %d %d ",
+ dev->gc_chunk, tags.obj_id,
+ tags.chunk_id, tags.n_bytes);
- /* Next page please.... */
- if (dev->alloc_block >= 0) {
- bi = yaffs_get_block_info(dev, dev->alloc_block);
-
- retVal = (dev->alloc_block * dev->param.chunks_per_block) +
- dev->alloc_page;
- bi->pages_in_use++;
- yaffs_set_chunk_bit(dev, dev->alloc_block,
- dev->alloc_page);
-
- dev->alloc_page++;
+ if (object && !yaffs_skip_verification(dev)) {
+ if (tags.chunk_id == 0)
+ matching_chunk =
+ object->hdr_chunk;
+ else if (object->soft_del)
+ /* Defeat the test */
+ matching_chunk = old_chunk;
+ else
+ matching_chunk =
+ yaffs_find_chunk_in_file
+ (object, tags.chunk_id,
+ NULL);
+
+ if (old_chunk != matching_chunk)
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "gc: page in gc mismatch: %d %d %d %d",
+ old_chunk,
+ matching_chunk,
+ tags.obj_id,
+ tags.chunk_id);
+ }
+
+ if (!object) {
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "page %d in gc has no object: %d %d %d ",
+ old_chunk,
+ tags.obj_id, tags.chunk_id,
+ tags.n_bytes);
+ }
+
+ if (object &&
+ object->deleted &&
+ object->soft_del && tags.chunk_id != 0) {
+ /* Data chunk in a soft deleted file,
+ * throw it away.
+ * It's a soft deleted data chunk,
+ * No need to copy this, just forget
+ * about it and fix up the object.
+ */
+ /* Free chunks already includes
+ * softdeleted chunks, how ever this
+ * chunk is going to soon be really
+ * deleted which will increment free
+ * chunks. We have to decrement free
+ * chunks so this works out properly.
+ */
dev->n_free_chunks--;
+ bi->soft_del_pages--;
- /* If the block is full set the state to full */
- if (dev->alloc_page >= dev->param.chunks_per_block) {
- bi->block_state = YAFFS_BLOCK_STATE_FULL;
- dev->alloc_block = -1;
+ object->n_data_chunks--;
+ if (object->n_data_chunks <= 0) {
+ /* remeber to clean up obj */
+ dev->gc_cleanup_list[dev->n_clean_ups] = tags.obj_id;
+ dev->n_clean_ups++;
}
+ mark_flash = 0;
+ } else if (object) {
+ /* It's either a data chunk in a live
+ * file or an ObjectHeader, so we're
+ * interested in it.
+ * NB Need to keep the ObjectHeaders of
+ * deleted files until the whole file
+ * has been deleted off
+ */
+ tags.serial_number++;
+ dev->n_gc_copies++;
+
+ if (tags.chunk_id == 0) {
+ /* It is an object Id,
+ * We need to nuke the
+ * shrinkheader flags since its
+ * work is done.
+ * Also need to clean up
+ * shadowing.
+ */
+ struct yaffs_obj_hdr *oh;
+ oh = (struct yaffs_obj_hdr *) buffer;
+
+ oh->is_shrink = 0;
+ tags.extra_is_shrink = 0;
+ oh->shadows_obj = 0;
+ oh->inband_shadowed_obj_id = 0;
+ tags.extra_shadows = 0;
+
+ /* Update file size */
+ if (object->variant_type == YAFFS_OBJECT_TYPE_FILE) {
+ yaffs_oh_size_load(oh,
+ object->variant.file_variant.file_size);
+ tags.extra_file_size =
+ object->variant.file_variant.file_size;
+ }
- if (blockUsedPtr)
- *blockUsedPtr = bi;
-
- return retVal;
- }
-
- T(YAFFS_TRACE_ERROR,
- (TSTR("!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!" TENDSTR)));
-
- return -1;
-}
-
-static int yaffs_get_erased_chunks(yaffs_dev_t *dev)
-{
- int n;
-
- n = dev->n_erased_blocks * dev->param.chunks_per_block;
-
- if (dev->alloc_block > 0)
- n += (dev->param.chunks_per_block - dev->alloc_page);
+ yaffs_verify_oh(object, oh, &tags, 1);
+ new_chunk =
+ yaffs_write_new_chunk(dev, (u8 *) oh, &tags, 1);
+ } else {
+ new_chunk =
+ yaffs_write_new_chunk(dev, buffer, &tags, 1);
+ }
- return n;
+ if (new_chunk < 0) {
+ ret_val = YAFFS_FAIL;
+ } else {
-}
+ /* Now fix up the Tnodes etc. */
-/*
- * yaffs_skip_rest_of_block() skips over the rest of the allocation block
- * if we don't want to write to it.
- */
-void yaffs_skip_rest_of_block(yaffs_dev_t *dev)
-{
- if(dev->alloc_block > 0){
- yaffs_block_info_t *bi = yaffs_get_block_info(dev, dev->alloc_block);
- if(bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING){
- bi->block_state = YAFFS_BLOCK_STATE_FULL;
- dev->alloc_block = -1;
+ if (tags.chunk_id == 0) {
+ /* It's a header */
+ object->hdr_chunk = new_chunk;
+ object->serial = tags.serial_number;
+ } else {
+ /* It's a data chunk */
+ yaffs_put_chunk_in_file(object, tags.chunk_id,
+ new_chunk, 0);
+ }
}
}
+ if (ret_val == YAFFS_OK)
+ yaffs_chunk_del(dev, old_chunk, mark_flash, __LINE__);
+ return ret_val;
}
-
-static int yaffs_gc_block(yaffs_dev_t *dev, int block,
- int wholeBlock)
+static int yaffs_gc_block(struct yaffs_dev *dev, int block, int whole_block)
{
- int oldChunk;
- int newChunk;
- int mark_flash;
- int retVal = YAFFS_OK;
+ int old_chunk;
+ int ret_val = YAFFS_OK;
int i;
- int isCheckpointBlock;
- int matchingChunk;
- int maxCopies;
-
- int chunksBefore = yaffs_get_erased_chunks(dev);
- int chunksAfter;
+ int is_checkpt_block;
+ int max_copies;
+ int chunks_before = yaffs_get_erased_chunks(dev);
+ int chunks_after;
+ struct yaffs_block_info *bi = yaffs_get_block_info(dev, block);
- yaffs_ext_tags tags;
+ is_checkpt_block = (bi->block_state == YAFFS_BLOCK_STATE_CHECKPOINT);
- yaffs_block_info_t *bi = yaffs_get_block_info(dev, block);
-
- yaffs_obj_t *object;
-
- isCheckpointBlock = (bi->block_state == YAFFS_BLOCK_STATE_CHECKPOINT);
-
-
- T(YAFFS_TRACE_TRACING,
- (TSTR("Collecting block %d, in use %d, shrink %d, wholeBlock %d" TENDSTR),
- block,
- bi->pages_in_use,
- bi->has_shrink_hdr,
- wholeBlock));
+ yaffs_trace(YAFFS_TRACE_TRACING,
+ "Collecting block %d, in use %d, shrink %d, whole_block %d",
+ block, bi->pages_in_use, bi->has_shrink_hdr,
+ whole_block);
/*yaffs_verify_free_chunks(dev); */
- if(bi->block_state == YAFFS_BLOCK_STATE_FULL)
+ if (bi->block_state == YAFFS_BLOCK_STATE_FULL)
bi->block_state = YAFFS_BLOCK_STATE_COLLECTING;
-
+
bi->has_shrink_hdr = 0; /* clear the flag so that the block can erase */
dev->gc_disable = 1;
- if (isCheckpointBlock ||
- !yaffs_still_some_chunks(dev, block)) {
- T(YAFFS_TRACE_TRACING,
- (TSTR
- ("Collecting block %d that has no chunks in use" TENDSTR),
- block));
+ yaffs_summary_gc(dev, block);
+
+ if (is_checkpt_block || !yaffs_still_some_chunks(dev, block)) {
+ yaffs_trace(YAFFS_TRACE_TRACING,
+ "Collecting block %d that has no chunks in use",
+ block);
yaffs_block_became_dirty(dev, block);
} else {
- __u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__);
+ u8 *buffer = yaffs_get_temp_buffer(dev);
yaffs_verify_blk(dev, bi, block);
- maxCopies = (wholeBlock) ? dev->param.chunks_per_block : 5;
- oldChunk = block * dev->param.chunks_per_block + dev->gc_chunk;
+ max_copies = (whole_block) ? dev->param.chunks_per_block : 5;
+ old_chunk = block * dev->param.chunks_per_block + dev->gc_chunk;
- for (/* init already done */;
- retVal == YAFFS_OK &&
+ for (/* init already done */ ;
+ ret_val == YAFFS_OK &&
dev->gc_chunk < dev->param.chunks_per_block &&
(bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) &&
- maxCopies > 0;
- dev->gc_chunk++, oldChunk++) {
+ max_copies > 0;
+ dev->gc_chunk++, old_chunk++) {
if (yaffs_check_chunk_bit(dev, block, dev->gc_chunk)) {
-
- /* This page is in use and might need to be copied off */
-
- maxCopies--;
-
- mark_flash = 1;
-
- yaffs_init_tags(&tags);
-
- yaffs_rd_chunk_tags_nand(dev, oldChunk,
- buffer, &tags);
-
- object =
- yaffs_find_by_number(dev,
- tags.obj_id);
-
- T(YAFFS_TRACE_GC_DETAIL,
- (TSTR
- ("Collecting chunk in block %d, %d %d %d " TENDSTR),
- dev->gc_chunk, tags.obj_id, tags.chunk_id,
- tags.n_bytes));
-
- if (object && !yaffs_skip_verification(dev)) {
- if (tags.chunk_id == 0)
- matchingChunk = object->hdr_chunk;
- else if (object->soft_del)
- matchingChunk = oldChunk; /* Defeat the test */
- else
- matchingChunk = yaffs_find_chunk_in_file(object, tags.chunk_id, NULL);
-
- if (oldChunk != matchingChunk)
- T(YAFFS_TRACE_ERROR,
- (TSTR("gc: page in gc mismatch: %d %d %d %d"TENDSTR),
- oldChunk, matchingChunk, tags.obj_id, tags.chunk_id));
-
- }
-
- if (!object) {
- T(YAFFS_TRACE_ERROR,
- (TSTR
- ("page %d in gc has no object: %d %d %d "
- TENDSTR), oldChunk,
- tags.obj_id, tags.chunk_id, tags.n_bytes));
- }
-
- if (object &&
- object->deleted &&
- object->soft_del &&
- tags.chunk_id != 0) {
- /* Data chunk in a soft deleted file, throw it away
- * It's a soft deleted data chunk,
- * No need to copy this, just forget about it and
- * fix up the object.
- */
-
- /* Free chunks already includes softdeleted chunks.
- * How ever this chunk is going to soon be really deleted
- * which will increment free chunks.
- * We have to decrement free chunks so this works out properly.
- */
- dev->n_free_chunks--;
- bi->soft_del_pages--;
-
- object->n_data_chunks--;
-
- if (object->n_data_chunks <= 0) {
- /* remeber to clean up the object */
- dev->gc_cleanup_list[dev->n_clean_ups] =
- tags.obj_id;
- dev->n_clean_ups++;
- }
- mark_flash = 0;
- } else if (0) {
- /* Todo object && object->deleted && object->n_data_chunks == 0 */
- /* Deleted object header with no data chunks.
- * Can be discarded and the file deleted.
- */
- object->hdr_chunk = 0;
- yaffs_free_tnode(object->my_dev,
- object->variant.
- file_variant.top);
- object->variant.file_variant.top = NULL;
- yaffs_generic_obj_del(object);
-
- } else if (object) {
- /* It's either a data chunk in a live file or
- * an ObjectHeader, so we're interested in it.
- * NB Need to keep the ObjectHeaders of deleted files
- * until the whole file has been deleted off
- */
- tags.serial_number++;
-
- dev->n_gc_copies++;
-
- if (tags.chunk_id == 0) {
- /* It is an object Id,
- * We need to nuke the shrinkheader flags first
- * Also need to clean up shadowing.
- * We no longer want the shrinkHeader flag since its work is done
- * and if it is left in place it will mess up scanning.
- */
-
- yaffs_obj_header *oh;
- oh = (yaffs_obj_header *)buffer;
-
- oh->is_shrink = 0;
- tags.extra_is_shrink = 0;
-
- oh->shadows_obj = 0;
- oh->inband_shadowed_obj_id = 0;
- tags.extra_shadows = 0;
-
- /* Update file size */
- if(object->variant_type == YAFFS_OBJECT_TYPE_FILE){
- oh->file_size = object->variant.file_variant.file_size;
- tags.extra_length = oh->file_size;
- }
-
- yaffs_verify_oh(object, oh, &tags, 1);
- newChunk =
- yaffs_write_new_chunk(dev,(__u8 *) oh, &tags, 1);
- } else
- newChunk =
- yaffs_write_new_chunk(dev, buffer, &tags, 1);
-
- if (newChunk < 0) {
- retVal = YAFFS_FAIL;
- } else {
-
- /* Ok, now fix up the Tnodes etc. */
-
- if (tags.chunk_id == 0) {
- /* It's a header */
- object->hdr_chunk = newChunk;
- object->serial = tags.serial_number;
- } else {
- /* It's a data chunk */
- int ok;
- ok = yaffs_put_chunk_in_file
- (object,
- tags.chunk_id,
- newChunk, 0);
- }
- }
- }
-
- if (retVal == YAFFS_OK)
- yaffs_chunk_del(dev, oldChunk, mark_flash, __LINE__);
-
+ /* Page is in use and might need to be copied */
+ max_copies--;
+ ret_val = yaffs_gc_process_chunk(dev, bi,
+ old_chunk, buffer);
}
}
-
- yaffs_release_temp_buffer(dev, buffer, __LINE__);
-
-
-
+ yaffs_release_temp_buffer(dev, buffer);
}
yaffs_verify_collected_blk(dev, bi, block);
-
-
if (bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) {
/*
* The gc did not complete. Set block state back to FULL
@@ -2332,32 +2598,25 @@ static int yaffs_gc_block(yaffs_dev_t *dev, int block,
/* Do any required cleanups */
for (i = 0; i < dev->n_clean_ups; i++) {
/* Time to delete the file too */
- object =
- yaffs_find_by_number(dev,
- dev->gc_cleanup_list[i]);
+ struct yaffs_obj *object =
+ yaffs_find_by_number(dev, dev->gc_cleanup_list[i]);
if (object) {
yaffs_free_tnode(dev,
- object->variant.file_variant.
- top);
+ object->variant.file_variant.top);
object->variant.file_variant.top = NULL;
- T(YAFFS_TRACE_GC,
- (TSTR
- ("yaffs: About to finally delete object %d"
- TENDSTR), object->obj_id));
+ yaffs_trace(YAFFS_TRACE_GC,
+ "yaffs: About to finally delete object %d",
+ object->obj_id);
yaffs_generic_obj_del(object);
object->my_dev->n_deleted_files--;
}
}
-
-
- chunksAfter = yaffs_get_erased_chunks(dev);
- if (chunksBefore >= chunksAfter) {
- T(YAFFS_TRACE_GC,
- (TSTR
- ("gc did not increase free chunks before %d after %d"
- TENDSTR), chunksBefore, chunksAfter));
- }
+ chunks_after = yaffs_get_erased_chunks(dev);
+ if (chunks_before >= chunks_after)
+ yaffs_trace(YAFFS_TRACE_GC,
+ "gc did not increase free chunks before %d after %d",
+ chunks_before, chunks_after);
dev->gc_block = 0;
dev->gc_chunk = 0;
dev->n_clean_ups = 0;
@@ -2365,24 +2624,23 @@ static int yaffs_gc_block(yaffs_dev_t *dev, int block,
dev->gc_disable = 0;
- return retVal;
+ return ret_val;
}
/*
- * FindBlockForgarbageCollection is used to select the dirtiest block (or close enough)
+ * find_gc_block() selects the dirtiest block (or close enough)
* for garbage collection.
*/
-static unsigned yaffs_find_gc_block(yaffs_dev_t *dev,
- int aggressive,
- int background)
+static unsigned yaffs_find_gc_block(struct yaffs_dev *dev,
+ int aggressive, int background)
{
int i;
int iterations;
unsigned selected = 0;
int prioritised = 0;
- int prioritisedExists = 0;
- yaffs_block_info_t *bi;
+ int prioritised_exist = 0;
+ struct yaffs_block_info *bi;
int threshold;
/* First let's see if we need to grab a prioritised block */
@@ -2390,13 +2648,12 @@ static unsigned yaffs_find_gc_block(yaffs_dev_t *dev,
dev->gc_dirtiest = 0;
bi = dev->block_info;
for (i = dev->internal_start_block;
- i <= dev->internal_end_block && !selected;
- i++) {
+ i <= dev->internal_end_block && !selected; i++) {
if (bi->gc_prioritise) {
- prioritisedExists = 1;
+ prioritised_exist = 1;
if (bi->block_state == YAFFS_BLOCK_STATE_FULL &&
- yaffs_block_ok_for_gc(dev, bi)) {
+ yaffs_block_ok_for_gc(dev, bi)) {
selected = i;
prioritised = 1;
}
@@ -2406,124 +2663,125 @@ static unsigned yaffs_find_gc_block(yaffs_dev_t *dev,
/*
* If there is a prioritised block and none was selected then
- * this happened because there is at least one old dirty block gumming
- * up the works. Let's gc the oldest dirty block.
+ * this happened because there is at least one old dirty block
+ * gumming up the works. Let's gc the oldest dirty block.
*/
- if(prioritisedExists &&
- !selected &&
- dev->oldest_dirty_block > 0)
+ if (prioritised_exist &&
+ !selected && dev->oldest_dirty_block > 0)
selected = dev->oldest_dirty_block;
- if (!prioritisedExists) /* None found, so we can clear this */
+ if (!prioritised_exist) /* None found, so we can clear this */
dev->has_pending_prioritised_gc = 0;
}
- /* If we're doing aggressive GC then we are happy to take a less-dirty block, and
- * search harder.
- * else (we're doing a leasurely gc), then we only bother to do this if the
+ /* If we're doing aggressive GC then we are happy to take a less-dirty
+ * block, and search harder.
+ * else (leasurely gc), then we only bother to do this if the
* block has only a few pages in use.
*/
- if (!selected){
- int pagesUsed;
- int nBlocks = dev->internal_end_block - dev->internal_start_block + 1;
- if (aggressive){
+ if (!selected) {
+ int pages_used;
+ int n_blocks =
+ dev->internal_end_block - dev->internal_start_block + 1;
+ if (aggressive) {
threshold = dev->param.chunks_per_block;
- iterations = nBlocks;
+ iterations = n_blocks;
} else {
- int maxThreshold;
+ int max_threshold;
- if(background)
- maxThreshold = dev->param.chunks_per_block/2;
+ if (background)
+ max_threshold = dev->param.chunks_per_block / 2;
else
- maxThreshold = dev->param.chunks_per_block/8;
+ max_threshold = dev->param.chunks_per_block / 8;
- if(maxThreshold < YAFFS_GC_PASSIVE_THRESHOLD)
- maxThreshold = YAFFS_GC_PASSIVE_THRESHOLD;
+ if (max_threshold < YAFFS_GC_PASSIVE_THRESHOLD)
+ max_threshold = YAFFS_GC_PASSIVE_THRESHOLD;
- threshold = background ?
- (dev->gc_not_done + 2) * 2 : 0;
- if(threshold <YAFFS_GC_PASSIVE_THRESHOLD)
+ threshold = background ? (dev->gc_not_done + 2) * 2 : 0;
+ if (threshold < YAFFS_GC_PASSIVE_THRESHOLD)
threshold = YAFFS_GC_PASSIVE_THRESHOLD;
- if(threshold > maxThreshold)
- threshold = maxThreshold;
+ if (threshold > max_threshold)
+ threshold = max_threshold;
- iterations = nBlocks / 16 + 1;
+ iterations = n_blocks / 16 + 1;
if (iterations > 100)
iterations = 100;
}
for (i = 0;
- i < iterations &&
- (dev->gc_dirtiest < 1 ||
- dev->gc_pages_in_use > YAFFS_GC_GOOD_ENOUGH);
- i++) {
+ i < iterations &&
+ (dev->gc_dirtiest < 1 ||
+ dev->gc_pages_in_use > YAFFS_GC_GOOD_ENOUGH);
+ i++) {
dev->gc_block_finder++;
if (dev->gc_block_finder < dev->internal_start_block ||
- dev->gc_block_finder > dev->internal_end_block)
- dev->gc_block_finder = dev->internal_start_block;
+ dev->gc_block_finder > dev->internal_end_block)
+ dev->gc_block_finder =
+ dev->internal_start_block;
bi = yaffs_get_block_info(dev, dev->gc_block_finder);
- pagesUsed = bi->pages_in_use - bi->soft_del_pages;
+ pages_used = bi->pages_in_use - bi->soft_del_pages;
if (bi->block_state == YAFFS_BLOCK_STATE_FULL &&
- pagesUsed < dev->param.chunks_per_block &&
- (dev->gc_dirtiest < 1 || pagesUsed < dev->gc_pages_in_use) &&
- yaffs_block_ok_for_gc(dev, bi)) {
+ pages_used < dev->param.chunks_per_block &&
+ (dev->gc_dirtiest < 1 ||
+ pages_used < dev->gc_pages_in_use) &&
+ yaffs_block_ok_for_gc(dev, bi)) {
dev->gc_dirtiest = dev->gc_block_finder;
- dev->gc_pages_in_use = pagesUsed;
+ dev->gc_pages_in_use = pages_used;
}
}
- if(dev->gc_dirtiest > 0 && dev->gc_pages_in_use <= threshold)
+ if (dev->gc_dirtiest > 0 && dev->gc_pages_in_use <= threshold)
selected = dev->gc_dirtiest;
}
/*
- * If nothing has been selected for a while, try selecting the oldest dirty
+ * If nothing has been selected for a while, try the oldest dirty
* because that's gumming up the works.
*/
- if(!selected && dev->param.is_yaffs2 &&
- dev->gc_not_done >= ( background ? 10 : 20)){
+ if (!selected && dev->param.is_yaffs2 &&
+ dev->gc_not_done >= (background ? 10 : 20)) {
yaffs2_find_oldest_dirty_seq(dev);
- if(dev->oldest_dirty_block > 0) {
+ if (dev->oldest_dirty_block > 0) {
selected = dev->oldest_dirty_block;
dev->gc_dirtiest = selected;
dev->oldest_dirty_gc_count++;
bi = yaffs_get_block_info(dev, selected);
- dev->gc_pages_in_use = bi->pages_in_use - bi->soft_del_pages;
- } else
+ dev->gc_pages_in_use =
+ bi->pages_in_use - bi->soft_del_pages;
+ } else {
dev->gc_not_done = 0;
+ }
}
- if(selected){
- T(YAFFS_TRACE_GC,
- (TSTR("GC Selected block %d with %d free, prioritised:%d" TENDSTR),
- selected,
- dev->param.chunks_per_block - dev->gc_pages_in_use,
- prioritised));
+ if (selected) {
+ yaffs_trace(YAFFS_TRACE_GC,
+ "GC Selected block %d with %d free, prioritised:%d",
+ selected,
+ dev->param.chunks_per_block - dev->gc_pages_in_use,
+ prioritised);
dev->n_gc_blocks++;
- if(background)
+ if (background)
dev->bg_gcs++;
dev->gc_dirtiest = 0;
dev->gc_pages_in_use = 0;
dev->gc_not_done = 0;
- if(dev->refresh_skip > 0)
+ if (dev->refresh_skip > 0)
dev->refresh_skip--;
- } else{
+ } else {
dev->gc_not_done++;
- T(YAFFS_TRACE_GC,
- (TSTR("GC none: finder %d skip %d threshold %d dirtiest %d using %d oldest %d%s" TENDSTR),
- dev->gc_block_finder, dev->gc_not_done,
- threshold,
- dev->gc_dirtiest, dev->gc_pages_in_use,
- dev->oldest_dirty_block,
- background ? " bg" : ""));
+ yaffs_trace(YAFFS_TRACE_GC,
+ "GC none: finder %d skip %d threshold %d dirtiest %d using %d oldest %d%s",
+ dev->gc_block_finder, dev->gc_not_done, threshold,
+ dev->gc_dirtiest, dev->gc_pages_in_use,
+ dev->oldest_dirty_block, background ? " bg" : "");
}
return selected;
@@ -2533,53 +2791,54 @@ static unsigned yaffs_find_gc_block(yaffs_dev_t *dev,
* If we're very low on erased blocks then we do aggressive garbage collection
* otherwise we do "leasurely" garbage collection.
* Aggressive gc looks further (whole array) and will accept less dirty blocks.
- * Passive gc only inspects smaller areas and will only accept more dirty blocks.
+ * Passive gc only inspects smaller areas and only accepts more dirty blocks.
*
* The idea is to help clear out space in a more spread-out manner.
* Dunno if it really does anything useful.
*/
-static int yaffs_check_gc(yaffs_dev_t *dev, int background)
+static int yaffs_check_gc(struct yaffs_dev *dev, int background)
{
int aggressive = 0;
- int gcOk = YAFFS_OK;
- int maxTries = 0;
- int minErased;
- int erasedChunks;
- int checkpointBlockAdjust;
-
- if(dev->param.gc_control &&
- (dev->param.gc_control(dev) & 1) == 0)
+ int gc_ok = YAFFS_OK;
+ int max_tries = 0;
+ int min_erased;
+ int erased_chunks;
+ int checkpt_block_adjust;
+
+ if (dev->param.gc_control_fn &&
+ (dev->param.gc_control_fn(dev) & 1) == 0)
return YAFFS_OK;
- if (dev->gc_disable) {
+ if (dev->gc_disable)
/* Bail out so we don't get recursive gc */
return YAFFS_OK;
- }
/* This loop should pass the first time.
- * We'll only see looping here if the collection does not increase space.
+ * Only loops here if the collection does not increase space.
*/
do {
- maxTries++;
+ max_tries++;
- checkpointBlockAdjust = yaffs_calc_checkpt_blocks_required(dev);
+ checkpt_block_adjust = yaffs_calc_checkpt_blocks_required(dev);
- minErased = dev->param.n_reserved_blocks + checkpointBlockAdjust + 1;
- erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block;
+ min_erased =
+ dev->param.n_reserved_blocks + checkpt_block_adjust + 1;
+ erased_chunks =
+ dev->n_erased_blocks * dev->param.chunks_per_block;
- /* If we need a block soon then do aggressive gc.*/
- if (dev->n_erased_blocks < minErased)
+ /* If we need a block soon then do aggressive gc. */
+ if (dev->n_erased_blocks < min_erased)
aggressive = 1;
else {
- if(!background && erasedChunks > (dev->n_free_chunks / 4))
+ if (!background
+ && erased_chunks > (dev->n_free_chunks / 4))
break;
- if(dev->gc_skip > 20)
+ if (dev->gc_skip > 20)
dev->gc_skip = 20;
- if(erasedChunks < dev->n_free_chunks/2 ||
- dev->gc_skip < 1 ||
- background)
+ if (erased_chunks < dev->n_free_chunks / 2 ||
+ dev->gc_skip < 1 || background)
aggressive = 0;
else {
dev->gc_skip--;
@@ -2589,17 +2848,19 @@ static int yaffs_check_gc(yaffs_dev_t *dev, int background)
dev->gc_skip = 5;
- /* If we don't already have a block being gc'd then see if we should start another */
+ /* If we don't already have a block being gc'd then see if we
+ * should start another */
if (dev->gc_block < 1 && !aggressive) {
dev->gc_block = yaffs2_find_refresh_block(dev);
dev->gc_chunk = 0;
- dev->n_clean_ups=0;
+ dev->n_clean_ups = 0;
}
if (dev->gc_block < 1) {
- dev->gc_block = yaffs_find_gc_block(dev, aggressive, background);
+ dev->gc_block =
+ yaffs_find_gc_block(dev, aggressive, background);
dev->gc_chunk = 0;
- dev->n_clean_ups=0;
+ dev->n_clean_ups = 0;
}
if (dev->gc_block > 0) {
@@ -2607,25 +2868,24 @@ static int yaffs_check_gc(yaffs_dev_t *dev, int background)
if (!aggressive)
dev->passive_gc_count++;
- T(YAFFS_TRACE_GC,
- (TSTR
- ("yaffs: GC erasedBlocks %d aggressive %d" TENDSTR),
- dev->n_erased_blocks, aggressive));
+ yaffs_trace(YAFFS_TRACE_GC,
+ "yaffs: GC n_erased_blocks %d aggressive %d",
+ dev->n_erased_blocks, aggressive);
- gcOk = yaffs_gc_block(dev, dev->gc_block, aggressive);
+ gc_ok = yaffs_gc_block(dev, dev->gc_block, aggressive);
}
- if (dev->n_erased_blocks < (dev->param.n_reserved_blocks) && dev->gc_block > 0) {
- T(YAFFS_TRACE_GC,
- (TSTR
- ("yaffs: GC !!!no reclaim!!! erasedBlocks %d after try %d block %d"
- TENDSTR), dev->n_erased_blocks, maxTries, dev->gc_block));
+ if (dev->n_erased_blocks < (dev->param.n_reserved_blocks) &&
+ dev->gc_block > 0) {
+ yaffs_trace(YAFFS_TRACE_GC,
+ "yaffs: GC !!!no reclaim!!! n_erased_blocks %d after try %d block %d",
+ dev->n_erased_blocks, max_tries,
+ dev->gc_block);
}
} while ((dev->n_erased_blocks < dev->param.n_reserved_blocks) &&
- (dev->gc_block > 0) &&
- (maxTries < 2));
+ (dev->gc_block > 0) && (max_tries < 2));
- return aggressive ? gcOk : YAFFS_OK;
+ return aggressive ? gc_ok : YAFFS_OK;
}
/*
@@ -2633,222 +2893,19 @@ static int yaffs_check_gc(yaffs_dev_t *dev, int background)
* Garbage collects. Intended to be called from a background thread.
* Returns non-zero if at least half the free chunks are erased.
*/
-int yaffs_bg_gc(yaffs_dev_t *dev, unsigned urgency)
+int yaffs_bg_gc(struct yaffs_dev *dev, unsigned urgency)
{
- int erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block;
+ int erased_chunks = dev->n_erased_blocks * dev->param.chunks_per_block;
- T(YAFFS_TRACE_BACKGROUND, (TSTR("Background gc %u" TENDSTR),urgency));
+ yaffs_trace(YAFFS_TRACE_BACKGROUND, "Background gc %u", urgency);
yaffs_check_gc(dev, 1);
- return erasedChunks > dev->n_free_chunks/2;
-}
-
-/*------------------------- TAGS --------------------------------*/
-
-static int yaffs_tags_match(const yaffs_ext_tags *tags, int obj_id,
- int chunkInObject)
-{
- return (tags->chunk_id == chunkInObject &&
- tags->obj_id == obj_id && !tags->is_deleted) ? 1 : 0;
-
+ return erased_chunks > dev->n_free_chunks / 2;
}
-
/*-------------------- Data file manipulation -----------------*/
-static int yaffs_find_chunk_in_file(yaffs_obj_t *in, int inode_chunk,
- yaffs_ext_tags *tags)
-{
- /*Get the Tnode, then get the level 0 offset chunk offset */
- yaffs_tnode_t *tn;
- int theChunk = -1;
- yaffs_ext_tags localTags;
- int retVal = -1;
-
- yaffs_dev_t *dev = in->my_dev;
-
- if (!tags) {
- /* Passed a NULL, so use our own tags space */
- tags = &localTags;
- }
-
- tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk);
-
- if (tn) {
- theChunk = yaffs_get_group_base(dev, tn, inode_chunk);
-
- retVal =
- yaffs_find_chunk_in_group(dev, theChunk, tags, in->obj_id,
- inode_chunk);
- }
- return retVal;
-}
-
-static int yaffs_find_del_file_chunk(yaffs_obj_t *in, int inode_chunk,
- yaffs_ext_tags *tags)
-{
- /* Get the Tnode, then get the level 0 offset chunk offset */
- yaffs_tnode_t *tn;
- int theChunk = -1;
- yaffs_ext_tags localTags;
-
- yaffs_dev_t *dev = in->my_dev;
- int retVal = -1;
-
- if (!tags) {
- /* Passed a NULL, so use our own tags space */
- tags = &localTags;
- }
-
- tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk);
-
- if (tn) {
-
- theChunk = yaffs_get_group_base(dev, tn, inode_chunk);
-
- retVal =
- yaffs_find_chunk_in_group(dev, theChunk, tags, in->obj_id,
- inode_chunk);
-
- /* Delete the entry in the filestructure (if found) */
- if (retVal != -1)
- yaffs_load_tnode_0(dev, tn, inode_chunk, 0);
- }
-
- return retVal;
-}
-
-
-int yaffs_put_chunk_in_file(yaffs_obj_t *in, int inode_chunk,
- int nand_chunk, int in_scan)
-{
- /* NB in_scan is zero unless scanning.
- * For forward scanning, in_scan is > 0;
- * for backward scanning in_scan is < 0
- *
- * nand_chunk = 0 is a dummy insert to make sure the tnodes are there.
- */
-
- yaffs_tnode_t *tn;
- yaffs_dev_t *dev = in->my_dev;
- int existingChunk;
- yaffs_ext_tags existingTags;
- yaffs_ext_tags newTags;
- unsigned existingSerial, newSerial;
-
- if (in->variant_type != YAFFS_OBJECT_TYPE_FILE) {
- /* Just ignore an attempt at putting a chunk into a non-file during scanning
- * If it is not during Scanning then something went wrong!
- */
- if (!in_scan) {
- T(YAFFS_TRACE_ERROR,
- (TSTR
- ("yaffs tragedy:attempt to put data chunk into a non-file"
- TENDSTR)));
- YBUG();
- }
-
- yaffs_chunk_del(dev, nand_chunk, 1, __LINE__);
- return YAFFS_OK;
- }
-
- tn = yaffs_add_find_tnode_0(dev,
- &in->variant.file_variant,
- inode_chunk,
- NULL);
- if (!tn)
- return YAFFS_FAIL;
-
- if(!nand_chunk)
- /* Dummy insert, bail now */
- return YAFFS_OK;
-
- existingChunk = yaffs_get_group_base(dev, tn, inode_chunk);
-
- if (in_scan != 0) {
- /* If we're scanning then we need to test for duplicates
- * NB This does not need to be efficient since it should only ever
- * happen when the power fails during a write, then only one
- * chunk should ever be affected.
- *
- * Correction for YAFFS2: This could happen quite a lot and we need to think about efficiency! TODO
- * Update: For backward scanning we don't need to re-read tags so this is quite cheap.
- */
-
- if (existingChunk > 0) {
- /* NB Right now existing chunk will not be real chunk_id if the chunk group size > 1
- * thus we have to do a FindChunkInFile to get the real chunk id.
- *
- * We have a duplicate now we need to decide which one to use:
- *
- * Backwards scanning YAFFS2: The old one is what we use, dump the new one.
- * Forward scanning YAFFS2: The new one is what we use, dump the old one.
- * YAFFS1: Get both sets of tags and compare serial numbers.
- */
-
- if (in_scan > 0) {
- /* Only do this for forward scanning */
- yaffs_rd_chunk_tags_nand(dev,
- nand_chunk,
- NULL, &newTags);
-
- /* Do a proper find */
- existingChunk =
- yaffs_find_chunk_in_file(in, inode_chunk,
- &existingTags);
- }
-
- if (existingChunk <= 0) {
- /*Hoosterman - how did this happen? */
-
- T(YAFFS_TRACE_ERROR,
- (TSTR
- ("yaffs tragedy: existing chunk < 0 in scan"
- TENDSTR)));
-
- }
-
- /* NB The deleted flags should be false, otherwise the chunks will
- * not be loaded during a scan
- */
-
- if (in_scan > 0) {
- newSerial = newTags.serial_number;
- existingSerial = existingTags.serial_number;
- }
-
- if ((in_scan > 0) &&
- (existingChunk <= 0 ||
- ((existingSerial + 1) & 3) == newSerial)) {
- /* Forward scanning.
- * Use new
- * Delete the old one and drop through to update the tnode
- */
- yaffs_chunk_del(dev, existingChunk, 1,
- __LINE__);
- } else {
- /* Backward scanning or we want to use the existing one
- * Use existing.
- * Delete the new one and return early so that the tnode isn't changed
- */
- yaffs_chunk_del(dev, nand_chunk, 1,
- __LINE__);
- return YAFFS_OK;
- }
- }
-
- }
-
- if (existingChunk == 0)
- in->n_data_chunks++;
-
- yaffs_load_tnode_0(dev, tn, inode_chunk, nand_chunk);
-
- return YAFFS_OK;
-}
-
-static int yaffs_rd_data_obj(yaffs_obj_t *in, int inode_chunk,
- __u8 *buffer)
+static int yaffs_rd_data_obj(struct yaffs_obj *in, int inode_chunk, u8 * buffer)
{
int nand_chunk = yaffs_find_chunk_in_file(in, inode_chunk, NULL);
@@ -2856,9 +2913,9 @@ static int yaffs_rd_data_obj(yaffs_obj_t *in, int inode_chunk,
return yaffs_rd_chunk_tags_nand(in->my_dev, nand_chunk,
buffer, NULL);
else {
- T(YAFFS_TRACE_NANDACCESS,
- (TSTR("Chunk %d not found zero instead" TENDSTR),
- nand_chunk));
+ yaffs_trace(YAFFS_TRACE_NANDACCESS,
+ "Chunk %d not found zero instead",
+ nand_chunk);
/* get sane (zero) data if you read a hole */
memset(buffer, 0, in->my_dev->data_bytes_per_chunk);
return 0;
@@ -2866,12 +2923,13 @@ static int yaffs_rd_data_obj(yaffs_obj_t *in, int inode_chunk,
}
-void yaffs_chunk_del(yaffs_dev_t *dev, int chunk_id, int mark_flash, int lyn)
+void yaffs_chunk_del(struct yaffs_dev *dev, int chunk_id, int mark_flash,
+ int lyn)
{
int block;
int page;
- yaffs_ext_tags tags;
- yaffs_block_info_t *bi;
+ struct yaffs_ext_tags tags;
+ struct yaffs_block_info *bi;
if (chunk_id <= 0)
return;
@@ -2880,26 +2938,23 @@ void yaffs_chunk_del(yaffs_dev_t *dev, int chunk_id, int mark_flash, int lyn)
block = chunk_id / dev->param.chunks_per_block;
page = chunk_id % dev->param.chunks_per_block;
-
if (!yaffs_check_chunk_bit(dev, block, page))
- T(YAFFS_TRACE_VERIFY,
- (TSTR("Deleting invalid chunk %d"TENDSTR),
- chunk_id));
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "Deleting invalid chunk %d", chunk_id);
bi = yaffs_get_block_info(dev, block);
-
+
yaffs2_update_oldest_dirty_seq(dev, block, bi);
- T(YAFFS_TRACE_DELETION,
- (TSTR("line %d delete of chunk %d" TENDSTR), lyn, chunk_id));
+ yaffs_trace(YAFFS_TRACE_DELETION,
+ "line %d delete of chunk %d",
+ lyn, chunk_id);
if (!dev->param.is_yaffs2 && mark_flash &&
bi->block_state != YAFFS_BLOCK_STATE_COLLECTING) {
- yaffs_init_tags(&tags);
-
+ memset(&tags, 0, sizeof(tags));
tags.is_deleted = 1;
-
yaffs_wr_chunk_tags_nand(dev, chunk_id, NULL, &tags);
yaffs_handle_chunk_update(dev, chunk_id, &tags);
} else {
@@ -2911,519 +2966,449 @@ void yaffs_chunk_del(yaffs_dev_t *dev, int chunk_id, int mark_flash, int lyn)
*/
if (bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING ||
bi->block_state == YAFFS_BLOCK_STATE_FULL ||
- bi->block_state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
+ bi->block_state == YAFFS_BLOCK_STATE_NEEDS_SCAN ||
bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) {
dev->n_free_chunks++;
-
yaffs_clear_chunk_bit(dev, block, page);
-
bi->pages_in_use--;
if (bi->pages_in_use == 0 &&
!bi->has_shrink_hdr &&
bi->block_state != YAFFS_BLOCK_STATE_ALLOCATING &&
- bi->block_state != YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
+ bi->block_state != YAFFS_BLOCK_STATE_NEEDS_SCAN) {
yaffs_block_became_dirty(dev, block);
}
-
}
-
}
-static int yaffs_wr_data_obj(yaffs_obj_t *in, int inode_chunk,
- const __u8 *buffer, int n_bytes,
- int useReserve)
+static int yaffs_wr_data_obj(struct yaffs_obj *in, int inode_chunk,
+ const u8 *buffer, int n_bytes, int use_reserve)
{
/* Find old chunk Need to do this to get serial number
* Write new one and patch into tree.
* Invalidate old tags.
*/
- int prevChunkId;
- yaffs_ext_tags prevTags;
-
- int newChunkId;
- yaffs_ext_tags newTags;
+ int prev_chunk_id;
+ struct yaffs_ext_tags prev_tags;
+ int new_chunk_id;
+ struct yaffs_ext_tags new_tags;
+ struct yaffs_dev *dev = in->my_dev;
- yaffs_dev_t *dev = in->my_dev;
-
- yaffs_check_gc(dev,0);
+ yaffs_check_gc(dev, 0);
/* Get the previous chunk at this location in the file if it exists.
* If it does not exist then put a zero into the tree. This creates
* the tnode now, rather than later when it is harder to clean up.
*/
- prevChunkId = yaffs_find_chunk_in_file(in, inode_chunk, &prevTags);
- if(prevChunkId < 1 &&
- !yaffs_put_chunk_in_file(in, inode_chunk, 0, 0))
+ prev_chunk_id = yaffs_find_chunk_in_file(in, inode_chunk, &prev_tags);
+ if (prev_chunk_id < 1 &&
+ !yaffs_put_chunk_in_file(in, inode_chunk, 0, 0))
return 0;
/* Set up new tags */
- yaffs_init_tags(&newTags);
+ memset(&new_tags, 0, sizeof(new_tags));
- newTags.chunk_id = inode_chunk;
- newTags.obj_id = in->obj_id;
- newTags.serial_number =
- (prevChunkId > 0) ? prevTags.serial_number + 1 : 1;
- newTags.n_bytes = n_bytes;
+ new_tags.chunk_id = inode_chunk;
+ new_tags.obj_id = in->obj_id;
+ new_tags.serial_number =
+ (prev_chunk_id > 0) ? prev_tags.serial_number + 1 : 1;
+ new_tags.n_bytes = n_bytes;
if (n_bytes < 1 || n_bytes > dev->param.total_bytes_per_chunk) {
- T(YAFFS_TRACE_ERROR,
- (TSTR("Writing %d bytes to chunk!!!!!!!!!" TENDSTR), n_bytes));
- YBUG();
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "Writing %d bytes to chunk!!!!!!!!!",
+ n_bytes);
+ BUG();
}
-
-
- newChunkId =
- yaffs_write_new_chunk(dev, buffer, &newTags,
- useReserve);
- if (newChunkId > 0) {
- yaffs_put_chunk_in_file(in, inode_chunk, newChunkId, 0);
+ new_chunk_id =
+ yaffs_write_new_chunk(dev, buffer, &new_tags, use_reserve);
+
+ if (new_chunk_id > 0) {
+ yaffs_put_chunk_in_file(in, inode_chunk, new_chunk_id, 0);
- if (prevChunkId > 0)
- yaffs_chunk_del(dev, prevChunkId, 1, __LINE__);
+ if (prev_chunk_id > 0)
+ yaffs_chunk_del(dev, prev_chunk_id, 1, __LINE__);
yaffs_verify_file_sane(in);
}
- return newChunkId;
+ return new_chunk_id;
}
-/* UpdateObjectHeader updates the header on NAND for an object.
- * If name is not NULL, then that new name is used.
- */
-int yaffs_update_oh(yaffs_obj_t *in, const YCHAR *name, int force,
- int is_shrink, int shadows, yaffs_xattr_mod *xmod)
-{
-
- yaffs_block_info_t *bi;
-
- yaffs_dev_t *dev = in->my_dev;
-
- int prevChunkId;
- int retVal = 0;
- int result = 0;
-
- int newChunkId;
- yaffs_ext_tags newTags;
- yaffs_ext_tags oldTags;
- const YCHAR *alias = NULL;
-
- __u8 *buffer = NULL;
- YCHAR old_name[YAFFS_MAX_NAME_LENGTH + 1];
-
- yaffs_obj_header *oh = NULL;
- yaffs_strcpy(old_name, _Y("silly old name"));
+static int yaffs_do_xattrib_mod(struct yaffs_obj *obj, int set,
+ const YCHAR *name, const void *value, int size,
+ int flags)
+{
+ struct yaffs_xattr_mod xmod;
+ int result;
- if (!in->fake ||
- in == dev->root_dir || /* The root_dir should also be saved */
- force || xmod) {
-
- yaffs_check_gc(dev,0);
- yaffs_check_obj_details_loaded(in);
+ xmod.set = set;
+ xmod.name = name;
+ xmod.data = value;
+ xmod.size = size;
+ xmod.flags = flags;
+ xmod.result = -ENOSPC;
- buffer = yaffs_get_temp_buffer(in->my_dev, __LINE__);
- oh = (yaffs_obj_header *) buffer;
+ result = yaffs_update_oh(obj, NULL, 0, 0, 0, &xmod);
- prevChunkId = in->hdr_chunk;
+ if (result > 0)
+ return xmod.result;
+ else
+ return -ENOSPC;
+}
- if (prevChunkId > 0) {
- result = yaffs_rd_chunk_tags_nand(dev, prevChunkId,
- buffer, &oldTags);
+static int yaffs_apply_xattrib_mod(struct yaffs_obj *obj, char *buffer,
+ struct yaffs_xattr_mod *xmod)
+{
+ int retval = 0;
+ int x_offs = sizeof(struct yaffs_obj_hdr);
+ struct yaffs_dev *dev = obj->my_dev;
+ int x_size = dev->data_bytes_per_chunk - sizeof(struct yaffs_obj_hdr);
+ char *x_buffer = buffer + x_offs;
+
+ if (xmod->set)
+ retval =
+ nval_set(x_buffer, x_size, xmod->name, xmod->data,
+ xmod->size, xmod->flags);
+ else
+ retval = nval_del(x_buffer, x_size, xmod->name);
- yaffs_verify_oh(in, oh, &oldTags, 0);
+ obj->has_xattr = nval_hasvalues(x_buffer, x_size);
+ obj->xattr_known = 1;
+ xmod->result = retval;
- memcpy(old_name, oh->name, sizeof(oh->name));
- memset(buffer, 0xFF, sizeof(yaffs_obj_header));
- } else
- memset(buffer, 0xFF, dev->data_bytes_per_chunk);
+ return retval;
+}
- oh->type = in->variant_type;
- oh->yst_mode = in->yst_mode;
- oh->shadows_obj = oh->inband_shadowed_obj_id = shadows;
+static int yaffs_do_xattrib_fetch(struct yaffs_obj *obj, const YCHAR *name,
+ void *value, int size)
+{
+ char *buffer = NULL;
+ int result;
+ struct yaffs_ext_tags tags;
+ struct yaffs_dev *dev = obj->my_dev;
+ int x_offs = sizeof(struct yaffs_obj_hdr);
+ int x_size = dev->data_bytes_per_chunk - sizeof(struct yaffs_obj_hdr);
+ char *x_buffer;
+ int retval = 0;
-#ifdef CONFIG_YAFFS_WINCE
- oh->win_atime[0] = in->win_atime[0];
- oh->win_ctime[0] = in->win_ctime[0];
- oh->win_mtime[0] = in->win_mtime[0];
- oh->win_atime[1] = in->win_atime[1];
- oh->win_ctime[1] = in->win_ctime[1];
- oh->win_mtime[1] = in->win_mtime[1];
-#else
- oh->yst_uid = in->yst_uid;
- oh->yst_gid = in->yst_gid;
- oh->yst_atime = in->yst_atime;
- oh->yst_mtime = in->yst_mtime;
- oh->yst_ctime = in->yst_ctime;
- oh->yst_rdev = in->yst_rdev;
-#endif
- if (in->parent)
- oh->parent_obj_id = in->parent->obj_id;
- else
- oh->parent_obj_id = 0;
+ if (obj->hdr_chunk < 1)
+ return -ENODATA;
- if (name && *name) {
- memset(oh->name, 0, sizeof(oh->name));
- yaffs_load_oh_from_name(dev,oh->name,name);
- } else if (prevChunkId > 0)
- memcpy(oh->name, old_name, sizeof(oh->name));
+ /* If we know that the object has no xattribs then don't do all the
+ * reading and parsing.
+ */
+ if (obj->xattr_known && !obj->has_xattr) {
+ if (name)
+ return -ENODATA;
else
- memset(oh->name, 0, sizeof(oh->name));
-
- oh->is_shrink = is_shrink;
-
- switch (in->variant_type) {
- case YAFFS_OBJECT_TYPE_UNKNOWN:
- /* Should not happen */
- break;
- case YAFFS_OBJECT_TYPE_FILE:
- oh->file_size =
- (oh->parent_obj_id == YAFFS_OBJECTID_DELETED
- || oh->parent_obj_id ==
- YAFFS_OBJECTID_UNLINKED) ? 0 : in->variant.
- file_variant.file_size;
- break;
- case YAFFS_OBJECT_TYPE_HARDLINK:
- oh->equiv_id =
- in->variant.hardlink_variant.equiv_id;
- break;
- case YAFFS_OBJECT_TYPE_SPECIAL:
- /* Do nothing */
- break;
- case YAFFS_OBJECT_TYPE_DIRECTORY:
- /* Do nothing */
- break;
- case YAFFS_OBJECT_TYPE_SYMLINK:
- alias = in->variant.symlink_variant.alias;
- if(!alias)
- alias = _Y("no alias");
- yaffs_strncpy(oh->alias,
- alias,
- YAFFS_MAX_ALIAS_LENGTH);
- oh->alias[YAFFS_MAX_ALIAS_LENGTH] = 0;
- break;
- }
+ return 0;
+ }
- /* process any xattrib modifications */
- if(xmod)
- yaffs_apply_xattrib_mod(in, (char *)buffer, xmod);
+ buffer = (char *)yaffs_get_temp_buffer(dev);
+ if (!buffer)
+ return -ENOMEM;
+ result =
+ yaffs_rd_chunk_tags_nand(dev, obj->hdr_chunk, (u8 *) buffer, &tags);
- /* Tags */
- yaffs_init_tags(&newTags);
- in->serial++;
- newTags.chunk_id = 0;
- newTags.obj_id = in->obj_id;
- newTags.serial_number = in->serial;
+ if (result != YAFFS_OK)
+ retval = -ENOENT;
+ else {
+ x_buffer = buffer + x_offs;
- /* Add extra info for file header */
+ if (!obj->xattr_known) {
+ obj->has_xattr = nval_hasvalues(x_buffer, x_size);
+ obj->xattr_known = 1;
+ }
- newTags.extra_available = 1;
- newTags.extra_parent_id = oh->parent_obj_id;
- newTags.extra_length = oh->file_size;
- newTags.extra_is_shrink = oh->is_shrink;
- newTags.extra_equiv_id = oh->equiv_id;
- newTags.extra_shadows = (oh->shadows_obj > 0) ? 1 : 0;
- newTags.extra_obj_type = in->variant_type;
+ if (name)
+ retval = nval_get(x_buffer, x_size, name, value, size);
+ else
+ retval = nval_list(x_buffer, x_size, value, size);
+ }
+ yaffs_release_temp_buffer(dev, (u8 *) buffer);
+ return retval;
+}
- yaffs_verify_oh(in, oh, &newTags, 1);
+int yaffs_set_xattrib(struct yaffs_obj *obj, const YCHAR * name,
+ const void *value, int size, int flags)
+{
+ return yaffs_do_xattrib_mod(obj, 1, name, value, size, flags);
+}
- /* Create new chunk in NAND */
- newChunkId =
- yaffs_write_new_chunk(dev, buffer, &newTags,
- (prevChunkId > 0) ? 1 : 0);
+int yaffs_remove_xattrib(struct yaffs_obj *obj, const YCHAR * name)
+{
+ return yaffs_do_xattrib_mod(obj, 0, name, NULL, 0, 0);
+}
- if (newChunkId >= 0) {
+int yaffs_get_xattrib(struct yaffs_obj *obj, const YCHAR * name, void *value,
+ int size)
+{
+ return yaffs_do_xattrib_fetch(obj, name, value, size);
+}
- in->hdr_chunk = newChunkId;
+int yaffs_list_xattrib(struct yaffs_obj *obj, char *buffer, int size)
+{
+ return yaffs_do_xattrib_fetch(obj, NULL, buffer, size);
+}
- if (prevChunkId > 0) {
- yaffs_chunk_del(dev, prevChunkId, 1,
- __LINE__);
- }
+static void yaffs_check_obj_details_loaded(struct yaffs_obj *in)
+{
+ u8 *buf;
+ struct yaffs_obj_hdr *oh;
+ struct yaffs_dev *dev;
+ struct yaffs_ext_tags tags;
+ int result;
+ int alloc_failed = 0;
- if (!yaffs_obj_cache_dirty(in))
- in->dirty = 0;
+ if (!in || !in->lazy_loaded || in->hdr_chunk < 1)
+ return;
- /* If this was a shrink, then mark the block that the chunk lives on */
- if (is_shrink) {
- bi = yaffs_get_block_info(in->my_dev,
- newChunkId / in->my_dev->param.chunks_per_block);
- bi->has_shrink_hdr = 1;
- }
+ dev = in->my_dev;
+ in->lazy_loaded = 0;
+ buf = yaffs_get_temp_buffer(dev);
- }
+ result = yaffs_rd_chunk_tags_nand(dev, in->hdr_chunk, buf, &tags);
+ oh = (struct yaffs_obj_hdr *)buf;
- retVal = newChunkId;
+ in->yst_mode = oh->yst_mode;
+ yaffs_load_attribs(in, oh);
+ yaffs_set_obj_name_from_oh(in, oh);
+ if (in->variant_type == YAFFS_OBJECT_TYPE_SYMLINK) {
+ in->variant.symlink_variant.alias =
+ yaffs_clone_str(oh->alias);
+ if (!in->variant.symlink_variant.alias)
+ alloc_failed = 1; /* Not returned */
}
-
- if (buffer)
- yaffs_release_temp_buffer(dev, buffer, __LINE__);
-
- return retVal;
+ yaffs_release_temp_buffer(dev, buf);
}
-/*------------------------ Short Operations Cache ----------------------------------------
- * In many situations where there is no high level buffering (eg WinCE) a lot of
- * reads might be short sequential reads, and a lot of writes may be short
- * sequential writes. eg. scanning/writing a jpeg file.
- * In these cases, a short read/write cache can provide a huge perfomance benefit
- * with dumb-as-a-rock code.
- * In Linux, the page cache provides read buffering aand the short op cache provides write
- * buffering.
- *
- * There are a limited number (~10) of cache chunks per device so that we don't
- * need a very intelligent search.
- */
-
-static int yaffs_obj_cache_dirty(yaffs_obj_t *obj)
+static void yaffs_load_name_from_oh(struct yaffs_dev *dev, YCHAR *name,
+ const YCHAR *oh_name, int buff_size)
{
- yaffs_dev_t *dev = obj->my_dev;
- int i;
- yaffs_cache_t *cache;
- int nCaches = obj->my_dev->param.n_caches;
-
- for (i = 0; i < nCaches; i++) {
- cache = &dev->cache[i];
- if (cache->object == obj &&
- cache->dirty)
- return 1;
+#ifdef CONFIG_YAFFS_AUTO_UNICODE
+ if (dev->param.auto_unicode) {
+ if (*oh_name) {
+ /* It is an ASCII name, do an ASCII to
+ * unicode conversion */
+ const char *ascii_oh_name = (const char *)oh_name;
+ int n = buff_size - 1;
+ while (n > 0 && *ascii_oh_name) {
+ *name = *ascii_oh_name;
+ name++;
+ ascii_oh_name++;
+ n--;
+ }
+ } else {
+ strncpy(name, oh_name + 1, buff_size - 1);
+ }
+ } else {
+#else
+ (void) dev;
+ {
+#endif
+ strncpy(name, oh_name, buff_size - 1);
}
-
- return 0;
}
-
-static void yaffs_flush_file_cache(yaffs_obj_t *obj)
+static void yaffs_load_oh_from_name(struct yaffs_dev *dev, YCHAR *oh_name,
+ const YCHAR *name)
{
- yaffs_dev_t *dev = obj->my_dev;
- int lowest = -99; /* Stop compiler whining. */
- int i;
- yaffs_cache_t *cache;
- int chunkWritten = 0;
- int nCaches = obj->my_dev->param.n_caches;
-
- if (nCaches > 0) {
- do {
- cache = NULL;
-
- /* Find the dirty cache for this object with the lowest chunk id. */
- for (i = 0; i < nCaches; i++) {
- if (dev->cache[i].object == obj &&
- dev->cache[i].dirty) {
- if (!cache
- || dev->cache[i].chunk_id <
- lowest) {
- cache = &dev->cache[i];
- lowest = cache->chunk_id;
- }
- }
- }
+#ifdef CONFIG_YAFFS_AUTO_UNICODE
- if (cache && !cache->locked) {
- /* Write it out and free it up */
-
- chunkWritten =
- yaffs_wr_data_obj(cache->object,
- cache->chunk_id,
- cache->data,
- cache->n_bytes,
- 1);
- cache->dirty = 0;
- cache->object = NULL;
- }
+ int is_ascii;
+ YCHAR *w;
- } while (cache && chunkWritten > 0);
+ if (dev->param.auto_unicode) {
- if (cache) {
- /* Hoosterman, disk full while writing cache out. */
- T(YAFFS_TRACE_ERROR,
- (TSTR("yaffs tragedy: no space during cache write" TENDSTR)));
+ is_ascii = 1;
+ w = name;
+ /* Figure out if the name will fit in ascii character set */
+ while (is_ascii && *w) {
+ if ((*w) & 0xff00)
+ is_ascii = 0;
+ w++;
}
- }
-
-}
-
-/*yaffs_flush_whole_cache(dev)
- *
- *
- */
-
-void yaffs_flush_whole_cache(yaffs_dev_t *dev)
-{
- yaffs_obj_t *obj;
- int nCaches = dev->param.n_caches;
- int i;
-
- /* Find a dirty object in the cache and flush it...
- * until there are no further dirty objects.
- */
- do {
- obj = NULL;
- for (i = 0; i < nCaches && !obj; i++) {
- if (dev->cache[i].object &&
- dev->cache[i].dirty)
- obj = dev->cache[i].object;
+ if (is_ascii) {
+ /* It is an ASCII name, so convert unicode to ascii */
+ char *ascii_oh_name = (char *)oh_name;
+ int n = YAFFS_MAX_NAME_LENGTH - 1;
+ while (n > 0 && *name) {
+ *ascii_oh_name = *name;
+ name++;
+ ascii_oh_name++;
+ n--;
+ }
+ } else {
+ /* Unicode name, so save starting at the second YCHAR */
+ *oh_name = 0;
+ strncpy(oh_name + 1, name, YAFFS_MAX_NAME_LENGTH - 2);
}
- if (obj)
- yaffs_flush_file_cache(obj);
-
- } while (obj);
-
+ } else {
+#else
+ dev = dev;
+ {
+#endif
+ strncpy(oh_name, name, YAFFS_MAX_NAME_LENGTH - 1);
+ }
}
-
-/* Grab us a cache chunk for use.
- * First look for an empty one.
- * Then look for the least recently used non-dirty one.
- * Then look for the least recently used dirty one...., flush and look again.
+/* UpdateObjectHeader updates the header on NAND for an object.
+ * If name is not NULL, then that new name is used.
*/
-static yaffs_cache_t *yaffs_grab_chunk_worker(yaffs_dev_t *dev)
+int yaffs_update_oh(struct yaffs_obj *in, const YCHAR *name, int force,
+ int is_shrink, int shadows, struct yaffs_xattr_mod *xmod)
{
- int i;
- if (dev->param.n_caches > 0) {
- for (i = 0; i < dev->param.n_caches; i++) {
- if (!dev->cache[i].object)
- return &dev->cache[i];
- }
- }
+ struct yaffs_block_info *bi;
+ struct yaffs_dev *dev = in->my_dev;
+ int prev_chunk_id;
+ int ret_val = 0;
+ int result = 0;
+ int new_chunk_id;
+ struct yaffs_ext_tags new_tags;
+ struct yaffs_ext_tags old_tags;
+ const YCHAR *alias = NULL;
+ u8 *buffer = NULL;
+ YCHAR old_name[YAFFS_MAX_NAME_LENGTH + 1];
+ struct yaffs_obj_hdr *oh = NULL;
+ loff_t file_size = 0;
- return NULL;
-}
+ strcpy(old_name, _Y("silly old name"));
-static yaffs_cache_t *yaffs_grab_chunk_cache(yaffs_dev_t *dev)
-{
- yaffs_cache_t *cache;
- yaffs_obj_t *theObj;
- int usage;
- int i;
- int pushout;
+ if (in->fake && in != dev->root_dir && !force && !xmod)
+ return ret_val;
- if (dev->param.n_caches > 0) {
- /* Try find a non-dirty one... */
+ yaffs_check_gc(dev, 0);
+ yaffs_check_obj_details_loaded(in);
- cache = yaffs_grab_chunk_worker(dev);
+ buffer = yaffs_get_temp_buffer(in->my_dev);
+ oh = (struct yaffs_obj_hdr *)buffer;
- if (!cache) {
- /* They were all dirty, find the last recently used object and flush
- * its cache, then find again.
- * NB what's here is not very accurate, we actually flush the object
- * the last recently used page.
- */
+ prev_chunk_id = in->hdr_chunk;
- /* With locking we can't assume we can use entry zero */
+ if (prev_chunk_id > 0) {
+ result = yaffs_rd_chunk_tags_nand(dev, prev_chunk_id,
+ buffer, &old_tags);
- theObj = NULL;
- usage = -1;
- cache = NULL;
- pushout = -1;
+ yaffs_verify_oh(in, oh, &old_tags, 0);
+ memcpy(old_name, oh->name, sizeof(oh->name));
+ memset(buffer, 0xff, sizeof(struct yaffs_obj_hdr));
+ } else {
+ memset(buffer, 0xff, dev->data_bytes_per_chunk);
+ }
- for (i = 0; i < dev->param.n_caches; i++) {
- if (dev->cache[i].object &&
- !dev->cache[i].locked &&
- (dev->cache[i].last_use < usage || !cache)) {
- usage = dev->cache[i].last_use;
- theObj = dev->cache[i].object;
- cache = &dev->cache[i];
- pushout = i;
- }
- }
+ oh->type = in->variant_type;
+ oh->yst_mode = in->yst_mode;
+ oh->shadows_obj = oh->inband_shadowed_obj_id = shadows;
- if (!cache || cache->dirty) {
- /* Flush and try again */
- yaffs_flush_file_cache(theObj);
- cache = yaffs_grab_chunk_worker(dev);
- }
+ yaffs_load_attribs_oh(oh, in);
- }
- return cache;
- } else
- return NULL;
+ if (in->parent)
+ oh->parent_obj_id = in->parent->obj_id;
+ else
+ oh->parent_obj_id = 0;
-}
+ if (name && *name) {
+ memset(oh->name, 0, sizeof(oh->name));
+ yaffs_load_oh_from_name(dev, oh->name, name);
+ } else if (prev_chunk_id > 0) {
+ memcpy(oh->name, old_name, sizeof(oh->name));
+ } else {
+ memset(oh->name, 0, sizeof(oh->name));
+ }
-/* Find a cached chunk */
-static yaffs_cache_t *yaffs_find_chunk_cache(const yaffs_obj_t *obj,
- int chunk_id)
-{
- yaffs_dev_t *dev = obj->my_dev;
- int i;
- if (dev->param.n_caches > 0) {
- for (i = 0; i < dev->param.n_caches; i++) {
- if (dev->cache[i].object == obj &&
- dev->cache[i].chunk_id == chunk_id) {
- dev->cache_hits++;
+ oh->is_shrink = is_shrink;
- return &dev->cache[i];
- }
- }
+ switch (in->variant_type) {
+ case YAFFS_OBJECT_TYPE_UNKNOWN:
+ /* Should not happen */
+ break;
+ case YAFFS_OBJECT_TYPE_FILE:
+ if (oh->parent_obj_id != YAFFS_OBJECTID_DELETED &&
+ oh->parent_obj_id != YAFFS_OBJECTID_UNLINKED)
+ file_size = in->variant.file_variant.file_size;
+ yaffs_oh_size_load(oh, file_size);
+ break;
+ case YAFFS_OBJECT_TYPE_HARDLINK:
+ oh->equiv_id = in->variant.hardlink_variant.equiv_id;
+ break;
+ case YAFFS_OBJECT_TYPE_SPECIAL:
+ /* Do nothing */
+ break;
+ case YAFFS_OBJECT_TYPE_DIRECTORY:
+ /* Do nothing */
+ break;
+ case YAFFS_OBJECT_TYPE_SYMLINK:
+ alias = in->variant.symlink_variant.alias;
+ if (!alias)
+ alias = _Y("no alias");
+ strncpy(oh->alias, alias, YAFFS_MAX_ALIAS_LENGTH);
+ oh->alias[YAFFS_MAX_ALIAS_LENGTH] = 0;
+ break;
}
- return NULL;
-}
-/* Mark the chunk for the least recently used algorithym */
-static void yaffs_use_cache(yaffs_dev_t *dev, yaffs_cache_t *cache,
- int isAWrite)
-{
+ /* process any xattrib modifications */
+ if (xmod)
+ yaffs_apply_xattrib_mod(in, (char *)buffer, xmod);
+
+ /* Tags */
+ memset(&new_tags, 0, sizeof(new_tags));
+ in->serial++;
+ new_tags.chunk_id = 0;
+ new_tags.obj_id = in->obj_id;
+ new_tags.serial_number = in->serial;
+
+ /* Add extra info for file header */
+ new_tags.extra_available = 1;
+ new_tags.extra_parent_id = oh->parent_obj_id;
+ new_tags.extra_file_size = file_size;
+ new_tags.extra_is_shrink = oh->is_shrink;
+ new_tags.extra_equiv_id = oh->equiv_id;
+ new_tags.extra_shadows = (oh->shadows_obj > 0) ? 1 : 0;
+ new_tags.extra_obj_type = in->variant_type;
+ yaffs_verify_oh(in, oh, &new_tags, 1);
+
+ /* Create new chunk in NAND */
+ new_chunk_id =
+ yaffs_write_new_chunk(dev, buffer, &new_tags,
+ (prev_chunk_id > 0) ? 1 : 0);
- if (dev->param.n_caches > 0) {
- if (dev->cache_last_use < 0 || dev->cache_last_use > 100000000) {
- /* Reset the cache usages */
- int i;
- for (i = 1; i < dev->param.n_caches; i++)
- dev->cache[i].last_use = 0;
+ if (buffer)
+ yaffs_release_temp_buffer(dev, buffer);
- dev->cache_last_use = 0;
- }
+ if (new_chunk_id < 0)
+ return new_chunk_id;
- dev->cache_last_use++;
+ in->hdr_chunk = new_chunk_id;
- cache->last_use = dev->cache_last_use;
+ if (prev_chunk_id > 0)
+ yaffs_chunk_del(dev, prev_chunk_id, 1, __LINE__);
- if (isAWrite)
- cache->dirty = 1;
- }
-}
+ if (!yaffs_obj_cache_dirty(in))
+ in->dirty = 0;
-/* Invalidate a single cache page.
- * Do this when a whole page gets written,
- * ie the short cache for this page is no longer valid.
- */
-static void yaffs_invalidate_chunk_cache(yaffs_obj_t *object, int chunk_id)
-{
- if (object->my_dev->param.n_caches > 0) {
- yaffs_cache_t *cache = yaffs_find_chunk_cache(object, chunk_id);
-
- if (cache)
- cache->object = NULL;
+ /* If this was a shrink, then mark the block
+ * that the chunk lives on */
+ if (is_shrink) {
+ bi = yaffs_get_block_info(in->my_dev,
+ new_chunk_id /
+ in->my_dev->param.chunks_per_block);
+ bi->has_shrink_hdr = 1;
}
-}
-/* Invalidate all the cache pages associated with this object
- * Do this whenever ther file is deleted or resized.
- */
-static void yaffs_invalidate_whole_cache(yaffs_obj_t *in)
-{
- int i;
- yaffs_dev_t *dev = in->my_dev;
- if (dev->param.n_caches > 0) {
- /* Invalidate it. */
- for (i = 0; i < dev->param.n_caches; i++) {
- if (dev->cache[i].object == in)
- dev->cache[i].object = NULL;
- }
- }
+ return new_chunk_id;
}
-
/*--------------------- File read/write ------------------------
* Read and write have very similar structures.
* In general the read/write has three parts to it
@@ -3434,24 +3419,19 @@ static void yaffs_invalidate_whole_cache(yaffs_obj_t *in)
* Curve-balls: the first chunk might also be the last chunk.
*/
-int yaffs_file_rd(yaffs_obj_t *in, __u8 *buffer, loff_t offset,
- int n_bytes)
+int yaffs_file_rd(struct yaffs_obj *in, u8 * buffer, loff_t offset, int n_bytes)
{
-
int chunk;
- __u32 start;
- int nToCopy;
+ u32 start;
+ int n_copy;
int n = n_bytes;
- int nDone = 0;
- yaffs_cache_t *cache;
-
- yaffs_dev_t *dev;
+ int n_done = 0;
+ struct yaffs_cache *cache;
+ struct yaffs_dev *dev;
dev = in->my_dev;
while (n > 0) {
- /* chunk = offset / dev->data_bytes_per_chunk + 1; */
- /* start = offset % dev->data_bytes_per_chunk; */
yaffs_addr_to_chunk(dev, offset, &chunk, &start);
chunk++;
@@ -3459,30 +3439,32 @@ int yaffs_file_rd(yaffs_obj_t *in, __u8 *buffer, loff_t offset,
* the same chunk.
*/
if ((start + n) < dev->data_bytes_per_chunk)
- nToCopy = n;
+ n_copy = n;
else
- nToCopy = dev->data_bytes_per_chunk - start;
+ n_copy = dev->data_bytes_per_chunk - start;
cache = yaffs_find_chunk_cache(in, chunk);
- /* If the chunk is already in the cache or it is less than a whole chunk
- * or we're using inband tags then use the cache (if there is caching)
- * else bypass the cache.
+ /* If the chunk is already in the cache or it is less than
+ * a whole chunk or we're using inband tags then use the cache
+ * (if there is caching) else bypass the cache.
*/
- if (cache || nToCopy != dev->data_bytes_per_chunk || dev->param.inband_tags) {
+ if (cache || n_copy != dev->data_bytes_per_chunk ||
+ dev->param.inband_tags) {
if (dev->param.n_caches > 0) {
- /* If we can't find the data in the cache, then load it up. */
+ /* If we can't find the data in the cache,
+ * then load it up. */
if (!cache) {
- cache = yaffs_grab_chunk_cache(in->my_dev);
+ cache =
+ yaffs_grab_chunk_cache(in->my_dev);
cache->object = in;
cache->chunk_id = chunk;
cache->dirty = 0;
cache->locked = 0;
yaffs_rd_data_obj(in, chunk,
- cache->
- data);
+ cache->data);
cache->n_bytes = 0;
}
@@ -3490,294 +3472,287 @@ int yaffs_file_rd(yaffs_obj_t *in, __u8 *buffer, loff_t offset,
cache->locked = 1;
-
- memcpy(buffer, &cache->data[start], nToCopy);
+ memcpy(buffer, &cache->data[start], n_copy);
cache->locked = 0;
} else {
- /* Read into the local buffer then copy..*/
-
- __u8 *localBuffer =
- yaffs_get_temp_buffer(dev, __LINE__);
- yaffs_rd_data_obj(in, chunk,
- localBuffer);
+ /* Read into the local buffer then copy.. */
- memcpy(buffer, &localBuffer[start], nToCopy);
+ u8 *local_buffer =
+ yaffs_get_temp_buffer(dev);
+ yaffs_rd_data_obj(in, chunk, local_buffer);
+ memcpy(buffer, &local_buffer[start], n_copy);
- yaffs_release_temp_buffer(dev, localBuffer,
- __LINE__);
+ yaffs_release_temp_buffer(dev, local_buffer);
}
-
} else {
-
- /* A full chunk. Read directly into the supplied buffer. */
+ /* A full chunk. Read directly into the buffer. */
yaffs_rd_data_obj(in, chunk, buffer);
-
}
-
- n -= nToCopy;
- offset += nToCopy;
- buffer += nToCopy;
- nDone += nToCopy;
-
+ n -= n_copy;
+ offset += n_copy;
+ buffer += n_copy;
+ n_done += n_copy;
}
-
- return nDone;
+ return n_done;
}
-int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset,
- int n_bytes, int write_trhrough)
+int yaffs_do_file_wr(struct yaffs_obj *in, const u8 *buffer, loff_t offset,
+ int n_bytes, int write_through)
{
int chunk;
- __u32 start;
- int nToCopy;
+ u32 start;
+ int n_copy;
int n = n_bytes;
- int nDone = 0;
- int nToWriteBack;
- int startOfWrite = offset;
- int chunkWritten = 0;
- __u32 n_bytesRead;
- __u32 chunkStart;
-
- yaffs_dev_t *dev;
+ int n_done = 0;
+ int n_writeback;
+ loff_t start_write = offset;
+ int chunk_written = 0;
+ u32 n_bytes_read;
+ loff_t chunk_start;
+ struct yaffs_dev *dev;
dev = in->my_dev;
- while (n > 0 && chunkWritten >= 0) {
+ while (n > 0 && chunk_written >= 0) {
yaffs_addr_to_chunk(dev, offset, &chunk, &start);
- if (chunk * dev->data_bytes_per_chunk + start != offset ||
- start >= dev->data_bytes_per_chunk) {
- T(YAFFS_TRACE_ERROR, (
- TSTR("AddrToChunk of offset %d gives chunk %d start %d"
- TENDSTR),
- (int)offset, chunk, start));
+ if (((loff_t)chunk) *
+ dev->data_bytes_per_chunk + start != offset ||
+ start >= dev->data_bytes_per_chunk) {
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "AddrToChunk of offset %lld gives chunk %d start %d",
+ offset, chunk, start);
}
- chunk++; /* File pos to chunk in file offset */
+ chunk++; /* File pos to chunk in file offset */
/* OK now check for the curveball where the start and end are in
* the same chunk.
*/
if ((start + n) < dev->data_bytes_per_chunk) {
- nToCopy = n;
+ n_copy = n;
- /* Now folks, to calculate how many bytes to write back....
- * If we're overwriting and not writing to then end of file then
- * we need to write back as much as was there before.
+ /* Now calculate how many bytes to write back....
+ * If we're overwriting and not writing to then end of
+ * file then we need to write back as much as was there
+ * before.
*/
- chunkStart = ((chunk - 1) * dev->data_bytes_per_chunk);
+ chunk_start = (((loff_t)(chunk - 1)) *
+ dev->data_bytes_per_chunk);
- if (chunkStart > in->variant.file_variant.file_size)
- n_bytesRead = 0; /* Past end of file */
+ if (chunk_start > in->variant.file_variant.file_size)
+ n_bytes_read = 0; /* Past end of file */
else
- n_bytesRead = in->variant.file_variant.file_size - chunkStart;
+ n_bytes_read =
+ in->variant.file_variant.file_size -
+ chunk_start;
- if (n_bytesRead > dev->data_bytes_per_chunk)
- n_bytesRead = dev->data_bytes_per_chunk;
+ if (n_bytes_read > dev->data_bytes_per_chunk)
+ n_bytes_read = dev->data_bytes_per_chunk;
- nToWriteBack =
- (n_bytesRead >
- (start + n)) ? n_bytesRead : (start + n);
+ n_writeback =
+ (n_bytes_read >
+ (start + n)) ? n_bytes_read : (start + n);
- if (nToWriteBack < 0 || nToWriteBack > dev->data_bytes_per_chunk)
- YBUG();
+ if (n_writeback < 0 ||
+ n_writeback > dev->data_bytes_per_chunk)
+ BUG();
} else {
- nToCopy = dev->data_bytes_per_chunk - start;
- nToWriteBack = dev->data_bytes_per_chunk;
+ n_copy = dev->data_bytes_per_chunk - start;
+ n_writeback = dev->data_bytes_per_chunk;
}
- if (nToCopy != dev->data_bytes_per_chunk || dev->param.inband_tags) {
- /* An incomplete start or end chunk (or maybe both start and end chunk),
- * or we're using inband tags, so we want to use the cache buffers.
+ if (n_copy != dev->data_bytes_per_chunk ||
+ !dev->param.cache_bypass_aligned ||
+ dev->param.inband_tags) {
+ /* An incomplete start or end chunk (or maybe both
+ * start and end chunk), or we're using inband tags,
+ * or we're forcing writes through the cache,
+ * so we want to use the cache buffers.
*/
if (dev->param.n_caches > 0) {
- yaffs_cache_t *cache;
- /* If we can't find the data in the cache, then load the cache */
+ struct yaffs_cache *cache;
+
+ /* If we can't find the data in the cache, then
+ * load the cache */
cache = yaffs_find_chunk_cache(in, chunk);
- if (!cache
- && yaffs_check_alloc_available(dev, 1)) {
+ if (!cache &&
+ yaffs_check_alloc_available(dev, 1)) {
cache = yaffs_grab_chunk_cache(dev);
cache->object = in;
cache->chunk_id = chunk;
cache->dirty = 0;
cache->locked = 0;
yaffs_rd_data_obj(in, chunk,
- cache->data);
+ cache->data);
} else if (cache &&
- !cache->dirty &&
- !yaffs_check_alloc_available(dev, 1)) {
- /* Drop the cache if it was a read cache item and
- * no space check has been made for it.
+ !cache->dirty &&
+ !yaffs_check_alloc_available(dev,
+ 1)) {
+ /* Drop the cache if it was a read cache
+ * item and no space check has been made
+ * for it.
*/
- cache = NULL;
+ cache = NULL;
}
if (cache) {
yaffs_use_cache(dev, cache, 1);
cache->locked = 1;
-
memcpy(&cache->data[start], buffer,
- nToCopy);
-
+ n_copy);
cache->locked = 0;
- cache->n_bytes = nToWriteBack;
+ cache->n_bytes = n_writeback;
- if (write_trhrough) {
- chunkWritten =
+ if (write_through) {
+ chunk_written =
yaffs_wr_data_obj
(cache->object,
cache->chunk_id,
- cache->data, cache->n_bytes,
- 1);
+ cache->data,
+ cache->n_bytes, 1);
cache->dirty = 0;
}
-
} else {
- chunkWritten = -1; /* fail the write */
+ chunk_written = -1; /* fail write */
}
} else {
- /* An incomplete start or end chunk (or maybe both start and end chunk)
- * Read into the local buffer then copy, then copy over and write back.
+ /* An incomplete start or end chunk (or maybe
+ * both start and end chunk). Read into the
+ * local buffer then copy over and write back.
*/
- __u8 *localBuffer =
- yaffs_get_temp_buffer(dev, __LINE__);
+ u8 *local_buffer = yaffs_get_temp_buffer(dev);
- yaffs_rd_data_obj(in, chunk,
- localBuffer);
+ yaffs_rd_data_obj(in, chunk, local_buffer);
+ memcpy(&local_buffer[start], buffer, n_copy);
-
-
- memcpy(&localBuffer[start], buffer, nToCopy);
-
- chunkWritten =
+ chunk_written =
yaffs_wr_data_obj(in, chunk,
- localBuffer,
- nToWriteBack,
- 0);
-
- yaffs_release_temp_buffer(dev, localBuffer,
- __LINE__);
+ local_buffer,
+ n_writeback, 0);
+ yaffs_release_temp_buffer(dev, local_buffer);
}
-
} else {
- /* A full chunk. Write directly from the supplied buffer. */
-
+ /* A full chunk. Write directly from the buffer. */
-
- chunkWritten =
+ chunk_written =
yaffs_wr_data_obj(in, chunk, buffer,
- dev->data_bytes_per_chunk,
- 0);
+ dev->data_bytes_per_chunk, 0);
- /* Since we've overwritten the cached data, we better invalidate it. */
+ /* Since we've overwritten the cached data,
+ * we better invalidate it. */
yaffs_invalidate_chunk_cache(in, chunk);
}
- if (chunkWritten >= 0) {
- n -= nToCopy;
- offset += nToCopy;
- buffer += nToCopy;
- nDone += nToCopy;
+ if (chunk_written >= 0) {
+ n -= n_copy;
+ offset += n_copy;
+ buffer += n_copy;
+ n_done += n_copy;
}
-
}
/* Update file object */
- if ((startOfWrite + nDone) > in->variant.file_variant.file_size)
- in->variant.file_variant.file_size = (startOfWrite + nDone);
+ if ((start_write + n_done) > in->variant.file_variant.file_size)
+ in->variant.file_variant.file_size = (start_write + n_done);
in->dirty = 1;
-
- return nDone;
+ return n_done;
}
-int yaffs_wr_file(yaffs_obj_t *in, const __u8 *buffer, loff_t offset,
- int n_bytes, int write_trhrough)
+int yaffs_wr_file(struct yaffs_obj *in, const u8 *buffer, loff_t offset,
+ int n_bytes, int write_through)
{
- yaffs2_handle_hole(in,offset);
- return yaffs_do_file_wr(in,buffer,offset,n_bytes,write_trhrough);
+ yaffs2_handle_hole(in, offset);
+ return yaffs_do_file_wr(in, buffer, offset, n_bytes, write_through);
}
-
-
/* ---------------------- File resizing stuff ------------------ */
-static void yaffs_prune_chunks(yaffs_obj_t *in, int new_size)
+static void yaffs_prune_chunks(struct yaffs_obj *in, loff_t new_size)
{
- yaffs_dev_t *dev = in->my_dev;
- int oldFileSize = in->variant.file_variant.file_size;
-
- int lastDel = 1 + (oldFileSize - 1) / dev->data_bytes_per_chunk;
-
- int startDel = 1 + (new_size + dev->data_bytes_per_chunk - 1) /
- dev->data_bytes_per_chunk;
+ struct yaffs_dev *dev = in->my_dev;
+ loff_t old_size = in->variant.file_variant.file_size;
int i;
int chunk_id;
+ u32 dummy;
+ int last_del;
+ int start_del;
+
+ if (old_size > 0)
+ yaffs_addr_to_chunk(dev, old_size - 1, &last_del, &dummy);
+ else
+ last_del = 0;
+
+ yaffs_addr_to_chunk(dev, new_size + dev->data_bytes_per_chunk - 1,
+ &start_del, &dummy);
+ last_del++;
+ start_del++;
/* Delete backwards so that we don't end up with holes if
* power is lost part-way through the operation.
*/
- for (i = lastDel; i >= startDel; i--) {
+ for (i = last_del; i >= start_del; i--) {
/* NB this could be optimised somewhat,
* eg. could retrieve the tags and write them without
* using yaffs_chunk_del
*/
chunk_id = yaffs_find_del_file_chunk(in, i, NULL);
- if (chunk_id > 0) {
- if (chunk_id <
- (dev->internal_start_block * dev->param.chunks_per_block)
- || chunk_id >=
- ((dev->internal_end_block +
- 1) * dev->param.chunks_per_block)) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("Found daft chunk_id %d for %d" TENDSTR),
- chunk_id, i));
- } else {
- in->n_data_chunks--;
- yaffs_chunk_del(dev, chunk_id, 1, __LINE__);
- }
+
+ if (chunk_id < 1)
+ continue;
+
+ if (chunk_id <
+ (dev->internal_start_block * dev->param.chunks_per_block) ||
+ chunk_id >=
+ ((dev->internal_end_block + 1) *
+ dev->param.chunks_per_block)) {
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "Found daft chunk_id %d for %d",
+ chunk_id, i);
+ } else {
+ in->n_data_chunks--;
+ yaffs_chunk_del(dev, chunk_id, 1, __LINE__);
}
}
-
}
-
-void yaffs_resize_file_down( yaffs_obj_t *obj, loff_t new_size)
+void yaffs_resize_file_down(struct yaffs_obj *obj, loff_t new_size)
{
- int newFullChunks;
- __u32 new_sizeOfPartialChunk;
- yaffs_dev_t *dev = obj->my_dev;
+ int new_full;
+ u32 new_partial;
+ struct yaffs_dev *dev = obj->my_dev;
- yaffs_addr_to_chunk(dev, new_size, &newFullChunks, &new_sizeOfPartialChunk);
+ yaffs_addr_to_chunk(dev, new_size, &new_full, &new_partial);
yaffs_prune_chunks(obj, new_size);
- if (new_sizeOfPartialChunk != 0) {
- int lastChunk = 1 + newFullChunks;
- __u8 *localBuffer = yaffs_get_temp_buffer(dev, __LINE__);
+ if (new_partial != 0) {
+ int last_chunk = 1 + new_full;
+ u8 *local_buffer = yaffs_get_temp_buffer(dev);
- /* Got to read and rewrite the last chunk with its new size and zero pad */
- yaffs_rd_data_obj(obj, lastChunk, localBuffer);
- memset(localBuffer + new_sizeOfPartialChunk, 0,
- dev->data_bytes_per_chunk - new_sizeOfPartialChunk);
+ /* Rewrite the last chunk with its new size and zero pad */
+ yaffs_rd_data_obj(obj, last_chunk, local_buffer);
+ memset(local_buffer + new_partial, 0,
+ dev->data_bytes_per_chunk - new_partial);
- yaffs_wr_data_obj(obj, lastChunk, localBuffer,
- new_sizeOfPartialChunk, 1);
+ yaffs_wr_data_obj(obj, last_chunk, local_buffer,
+ new_partial, 1);
- yaffs_release_temp_buffer(dev, localBuffer, __LINE__);
+ yaffs_release_temp_buffer(dev, local_buffer);
}
obj->variant.file_variant.file_size = new_size;
@@ -3785,30 +3760,29 @@ void yaffs_resize_file_down( yaffs_obj_t *obj, loff_t new_size)
yaffs_prune_tree(dev, &obj->variant.file_variant);
}
-
-int yaffs_resize_file(yaffs_obj_t *in, loff_t new_size)
+int yaffs_resize_file(struct yaffs_obj *in, loff_t new_size)
{
- yaffs_dev_t *dev = in->my_dev;
- int oldFileSize = in->variant.file_variant.file_size;
+ struct yaffs_dev *dev = in->my_dev;
+ loff_t old_size = in->variant.file_variant.file_size;
yaffs_flush_file_cache(in);
yaffs_invalidate_whole_cache(in);
- yaffs_check_gc(dev,0);
+ yaffs_check_gc(dev, 0);
if (in->variant_type != YAFFS_OBJECT_TYPE_FILE)
return YAFFS_FAIL;
- if (new_size == oldFileSize)
+ if (new_size == old_size)
return YAFFS_OK;
-
- if(new_size > oldFileSize){
- yaffs2_handle_hole(in,new_size);
+
+ if (new_size > old_size) {
+ yaffs2_handle_hole(in, new_size);
in->variant.file_variant.file_size = new_size;
} else {
- /* new_size < oldFileSize */
+ /* new_size < old_size */
yaffs_resize_file_down(in, new_size);
- }
+ }
/* Write a new object header to reflect the resize.
* show we've shrunk the file, if need be
@@ -3821,121 +3795,65 @@ int yaffs_resize_file(yaffs_obj_t *in, loff_t new_size)
in->parent->obj_id != YAFFS_OBJECTID_DELETED)
yaffs_update_oh(in, NULL, 0, 0, 0, NULL);
-
return YAFFS_OK;
}
-loff_t yaffs_get_file_size(yaffs_obj_t *obj)
-{
- YCHAR *alias = NULL;
- obj = yaffs_get_equivalent_obj(obj);
-
- switch (obj->variant_type) {
- case YAFFS_OBJECT_TYPE_FILE:
- return obj->variant.file_variant.file_size;
- case YAFFS_OBJECT_TYPE_SYMLINK:
- alias = obj->variant.symlink_variant.alias;
- if(!alias)
- return 0;
- return yaffs_strnlen(alias,YAFFS_MAX_ALIAS_LENGTH);
- default:
- return 0;
- }
-}
-
-
-
-int yaffs_flush_file(yaffs_obj_t *in, int update_time, int data_sync)
+int yaffs_flush_file(struct yaffs_obj *in, int update_time, int data_sync)
{
- int retVal;
- if (in->dirty) {
- yaffs_flush_file_cache(in);
- if(data_sync) /* Only sync data */
- retVal=YAFFS_OK;
- else {
- if (update_time) {
-#ifdef CONFIG_YAFFS_WINCE
- yfsd_win_file_time_now(in->win_mtime);
-#else
-
- in->yst_mtime = Y_CURRENT_TIME;
+ if (!in->dirty)
+ return YAFFS_OK;
-#endif
- }
+ yaffs_flush_file_cache(in);
- retVal = (yaffs_update_oh(in, NULL, 0, 0, 0, NULL) >=
- 0) ? YAFFS_OK : YAFFS_FAIL;
- }
- } else {
- retVal = YAFFS_OK;
- }
+ if (data_sync)
+ return YAFFS_OK;
- return retVal;
+ if (update_time)
+ yaffs_load_current_time(in, 0, 0);
+ return (yaffs_update_oh(in, NULL, 0, 0, 0, NULL) >= 0) ?
+ YAFFS_OK : YAFFS_FAIL;
}
-static int yaffs_generic_obj_del(yaffs_obj_t *in)
-{
-
- /* First off, invalidate the file's data in the cache, without flushing. */
- yaffs_invalidate_whole_cache(in);
-
- if (in->my_dev->param.is_yaffs2 && (in->parent != in->my_dev->del_dir)) {
- /* Move to the unlinked directory so we have a record that it was deleted. */
- yaffs_change_obj_name(in, in->my_dev->del_dir, _Y("deleted"), 0, 0);
-
- }
-
- yaffs_remove_obj_from_dir(in);
- yaffs_chunk_del(in->my_dev, in->hdr_chunk, 1, __LINE__);
- in->hdr_chunk = 0;
-
- yaffs_free_obj(in);
- return YAFFS_OK;
-
-}
/* yaffs_del_file deletes the whole file data
* and the inode associated with the file.
* It does not delete the links associated with the file.
*/
-static int yaffs_unlink_file_if_needed(yaffs_obj_t *in)
+static int yaffs_unlink_file_if_needed(struct yaffs_obj *in)
{
-
- int retVal;
- int immediateDeletion = 0;
- yaffs_dev_t *dev = in->my_dev;
+ int ret_val;
+ int del_now = 0;
+ struct yaffs_dev *dev = in->my_dev;
if (!in->my_inode)
- immediateDeletion = 1;
+ del_now = 1;
- if (immediateDeletion) {
- retVal =
+ if (del_now) {
+ ret_val =
yaffs_change_obj_name(in, in->my_dev->del_dir,
- _Y("deleted"), 0, 0);
- T(YAFFS_TRACE_TRACING,
- (TSTR("yaffs: immediate deletion of file %d" TENDSTR),
- in->obj_id));
+ _Y("deleted"), 0, 0);
+ yaffs_trace(YAFFS_TRACE_TRACING,
+ "yaffs: immediate deletion of file %d",
+ in->obj_id);
in->deleted = 1;
in->my_dev->n_deleted_files++;
if (dev->param.disable_soft_del || dev->param.is_yaffs2)
yaffs_resize_file(in, 0);
yaffs_soft_del_file(in);
} else {
- retVal =
+ ret_val =
yaffs_change_obj_name(in, in->my_dev->unlinked_dir,
- _Y("unlinked"), 0, 0);
+ _Y("unlinked"), 0, 0);
}
-
-
- return retVal;
+ return ret_val;
}
-int yaffs_del_file(yaffs_obj_t *in)
+static int yaffs_del_file(struct yaffs_obj *in)
{
- int retVal = YAFFS_OK;
- int deleted; /* Need to cache value on stack if in is freed */
- yaffs_dev_t *dev = in->my_dev;
+ int ret_val = YAFFS_OK;
+ int deleted; /* Need to cache value on stack if in is freed */
+ struct yaffs_dev *dev = in->my_dev;
if (dev->param.disable_soft_del || dev->param.is_yaffs2)
yaffs_resize_file(in, 0);
@@ -3945,11 +3863,11 @@ int yaffs_del_file(yaffs_obj_t *in)
* That won't be the case if it has been resized to zero.
*/
if (!in->unlinked)
- retVal = yaffs_unlink_file_if_needed(in);
+ ret_val = yaffs_unlink_file_if_needed(in);
deleted = in->deleted;
- if (retVal == YAFFS_OK && in->unlinked && !in->deleted) {
+ if (ret_val == YAFFS_OK && in->unlinked && !in->deleted) {
in->deleted = 1;
deleted = 1;
in->my_dev->n_deleted_files++;
@@ -3966,13 +3884,14 @@ int yaffs_del_file(yaffs_obj_t *in)
}
}
-static int yaffs_is_non_empty_dir(yaffs_obj_t *obj)
+int yaffs_is_non_empty_dir(struct yaffs_obj *obj)
{
- return (obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) &&
- !(ylist_empty(&obj->variant.dir_variant.children));
+ return (obj &&
+ obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) &&
+ !(list_empty(&obj->variant.dir_variant.children));
}
-static int yaffs_del_dir(yaffs_obj_t *obj)
+static int yaffs_del_dir(struct yaffs_obj *obj)
{
/* First check that the directory is empty. */
if (yaffs_is_non_empty_dir(obj))
@@ -3981,69 +3900,71 @@ static int yaffs_del_dir(yaffs_obj_t *obj)
return yaffs_generic_obj_del(obj);
}
-static int yaffs_del_symlink(yaffs_obj_t *in)
+static int yaffs_del_symlink(struct yaffs_obj *in)
{
- if(in->variant.symlink_variant.alias)
- YFREE(in->variant.symlink_variant.alias);
- in->variant.symlink_variant.alias=NULL;
+ kfree(in->variant.symlink_variant.alias);
+ in->variant.symlink_variant.alias = NULL;
return yaffs_generic_obj_del(in);
}
-static int yaffs_del_link(yaffs_obj_t *in)
+static int yaffs_del_link(struct yaffs_obj *in)
{
- /* remove this hardlink from the list assocaited with the equivalent
+ /* remove this hardlink from the list associated with the equivalent
* object
*/
- ylist_del_init(&in->hard_links);
+ list_del_init(&in->hard_links);
return yaffs_generic_obj_del(in);
}
-int yaffs_del_obj(yaffs_obj_t *obj)
+int yaffs_del_obj(struct yaffs_obj *obj)
{
-int retVal = -1;
+ int ret_val = -1;
+
switch (obj->variant_type) {
case YAFFS_OBJECT_TYPE_FILE:
- retVal = yaffs_del_file(obj);
+ ret_val = yaffs_del_file(obj);
break;
case YAFFS_OBJECT_TYPE_DIRECTORY:
- if(!ylist_empty(&obj->variant.dir_variant.dirty)){
- T(YAFFS_TRACE_BACKGROUND, (TSTR("Remove object %d from dirty directories" TENDSTR),obj->obj_id));
- ylist_del_init(&obj->variant.dir_variant.dirty);
+ if (!list_empty(&obj->variant.dir_variant.dirty)) {
+ yaffs_trace(YAFFS_TRACE_BACKGROUND,
+ "Remove object %d from dirty directories",
+ obj->obj_id);
+ list_del_init(&obj->variant.dir_variant.dirty);
}
return yaffs_del_dir(obj);
break;
case YAFFS_OBJECT_TYPE_SYMLINK:
- retVal = yaffs_del_symlink(obj);
+ ret_val = yaffs_del_symlink(obj);
break;
case YAFFS_OBJECT_TYPE_HARDLINK:
- retVal = yaffs_del_link(obj);
+ ret_val = yaffs_del_link(obj);
break;
case YAFFS_OBJECT_TYPE_SPECIAL:
- retVal = yaffs_generic_obj_del(obj);
+ ret_val = yaffs_generic_obj_del(obj);
break;
case YAFFS_OBJECT_TYPE_UNKNOWN:
- retVal = 0;
+ ret_val = 0;
break; /* should not happen. */
}
-
- return retVal;
+ return ret_val;
}
-static int yaffs_unlink_worker(yaffs_obj_t *obj)
+static int yaffs_unlink_worker(struct yaffs_obj *obj)
{
+ int del_now = 0;
- int immediateDeletion = 0;
+ if (!obj)
+ return YAFFS_FAIL;
if (!obj->my_inode)
- immediateDeletion = 1;
+ del_now = 1;
- if(obj)
- yaffs_update_parent(obj->parent);
+ yaffs_update_parent(obj->parent);
if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) {
return yaffs_del_link(obj);
- } else if (!ylist_empty(&obj->hard_links)) {
+ } else if (!list_empty(&obj->hard_links)) {
/* Curve ball: We're unlinking an object that has a hardlink.
*
* This problem arises because we are not strictly following
@@ -4053,39 +3974,40 @@ static int yaffs_unlink_worker(yaffs_obj_t *obj)
* Instead, we do the following:
* - Select a hardlink.
* - Unhook it from the hard links
- * - Move it from its parent directory (so that the rename can work)
+ * - Move it from its parent directory so that the rename works.
* - Rename the object to the hardlink's name.
* - Delete the hardlink
*/
- yaffs_obj_t *hl;
- yaffs_obj_t *parent;
- int retVal;
+ struct yaffs_obj *hl;
+ struct yaffs_obj *parent;
+ int ret_val;
YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
- hl = ylist_entry(obj->hard_links.next, yaffs_obj_t, hard_links);
+ hl = list_entry(obj->hard_links.next, struct yaffs_obj,
+ hard_links);
yaffs_get_obj_name(hl, name, YAFFS_MAX_NAME_LENGTH + 1);
parent = hl->parent;
- ylist_del_init(&hl->hard_links);
+ list_del_init(&hl->hard_links);
- yaffs_add_obj_to_dir(obj->my_dev->unlinked_dir, hl);
+ yaffs_add_obj_to_dir(obj->my_dev->unlinked_dir, hl);
- retVal = yaffs_change_obj_name(obj,parent, name, 0, 0);
+ ret_val = yaffs_change_obj_name(obj, parent, name, 0, 0);
- if (retVal == YAFFS_OK)
- retVal = yaffs_generic_obj_del(hl);
+ if (ret_val == YAFFS_OK)
+ ret_val = yaffs_generic_obj_del(hl);
- return retVal;
+ return ret_val;
- } else if (immediateDeletion) {
+ } else if (del_now) {
switch (obj->variant_type) {
case YAFFS_OBJECT_TYPE_FILE:
return yaffs_del_file(obj);
break;
case YAFFS_OBJECT_TYPE_DIRECTORY:
- ylist_del_init(&obj->variant.dir_variant.dirty);
+ list_del_init(&obj->variant.dir_variant.dirty);
return yaffs_del_dir(obj);
break;
case YAFFS_OBJECT_TYPE_SYMLINK:
@@ -4099,126 +4021,187 @@ static int yaffs_unlink_worker(yaffs_obj_t *obj)
default:
return YAFFS_FAIL;
}
- } else if(yaffs_is_non_empty_dir(obj))
+ } else if (yaffs_is_non_empty_dir(obj)) {
return YAFFS_FAIL;
- else
+ } else {
return yaffs_change_obj_name(obj, obj->my_dev->unlinked_dir,
- _Y("unlinked"), 0, 0);
+ _Y("unlinked"), 0, 0);
+ }
}
-
-static int yaffs_unlink_obj(yaffs_obj_t *obj)
+static int yaffs_unlink_obj(struct yaffs_obj *obj)
{
-
if (obj && obj->unlink_allowed)
return yaffs_unlink_worker(obj);
return YAFFS_FAIL;
-
}
-int yaffs_unlinker(yaffs_obj_t *dir, const YCHAR *name)
+
+int yaffs_unlinker(struct yaffs_obj *dir, const YCHAR *name)
{
- yaffs_obj_t *obj;
+ struct yaffs_obj *obj;
obj = yaffs_find_by_name(dir, name);
return yaffs_unlink_obj(obj);
}
+/* Note:
+ * If old_name is NULL then we take old_dir as the object to be renamed.
+ */
+int yaffs_rename_obj(struct yaffs_obj *old_dir, const YCHAR *old_name,
+ struct yaffs_obj *new_dir, const YCHAR *new_name)
+{
+ struct yaffs_obj *obj = NULL;
+ struct yaffs_obj *existing_target = NULL;
+ int force = 0;
+ int result;
+ struct yaffs_dev *dev;
+
+ if (!old_dir || old_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
+ BUG();
+ return YAFFS_FAIL;
+ }
+ if (!new_dir || new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
+ BUG();
+ return YAFFS_FAIL;
+ }
+
+ dev = old_dir->my_dev;
+
+#ifdef CONFIG_YAFFS_CASE_INSENSITIVE
+ /* Special case for case insemsitive systems.
+ * While look-up is case insensitive, the name isn't.
+ * Therefore we might want to change x.txt to X.txt
+ */
+ if (old_dir == new_dir &&
+ old_name && new_name &&
+ strcmp(old_name, new_name) == 0)
+ force = 1;
+#endif
+
+ if (strnlen(new_name, YAFFS_MAX_NAME_LENGTH + 1) >
+ YAFFS_MAX_NAME_LENGTH)
+ /* ENAMETOOLONG */
+ return YAFFS_FAIL;
+
+ if (old_name)
+ obj = yaffs_find_by_name(old_dir, old_name);
+ else{
+ obj = old_dir;
+ old_dir = obj->parent;
+ }
+
+ if (obj && obj->rename_allowed) {
+ /* Now handle an existing target, if there is one */
+ existing_target = yaffs_find_by_name(new_dir, new_name);
+ if (yaffs_is_non_empty_dir(existing_target)) {
+ return YAFFS_FAIL; /* ENOTEMPTY */
+ } else if (existing_target && existing_target != obj) {
+ /* Nuke the target first, using shadowing,
+ * but only if it isn't the same object.
+ *
+ * Note we must disable gc here otherwise it can mess
+ * up the shadowing.
+ *
+ */
+ dev->gc_disable = 1;
+ yaffs_change_obj_name(obj, new_dir, new_name, force,
+ existing_target->obj_id);
+ existing_target->is_shadowed = 1;
+ yaffs_unlink_obj(existing_target);
+ dev->gc_disable = 0;
+ }
+
+ result = yaffs_change_obj_name(obj, new_dir, new_name, 1, 0);
+
+ yaffs_update_parent(old_dir);
+ if (new_dir != old_dir)
+ yaffs_update_parent(new_dir);
+
+ return result;
+ }
+ return YAFFS_FAIL;
+}
+
/*----------------------- Initialisation Scanning ---------------------- */
-void yaffs_handle_shadowed_obj(yaffs_dev_t *dev, int obj_id,
- int backward_scanning)
+void yaffs_handle_shadowed_obj(struct yaffs_dev *dev, int obj_id,
+ int backward_scanning)
{
- yaffs_obj_t *obj;
+ struct yaffs_obj *obj;
- if (!backward_scanning) {
- /* Handle YAFFS1 forward scanning case
- * For YAFFS1 we always do the deletion
- */
-
- } else {
+ if (backward_scanning) {
/* Handle YAFFS2 case (backward scanning)
* If the shadowed object exists then ignore.
*/
obj = yaffs_find_by_number(dev, obj_id);
- if(obj)
+ if (obj)
return;
}
- /* Let's create it (if it does not exist) assuming it is a file so that it can do shrinking etc.
+ /* Let's create it (if it does not exist) assuming it is a file so that
+ * it can do shrinking etc.
* We put it in unlinked dir to be cleaned up after the scanning
*/
obj =
- yaffs_find_or_create_by_number(dev, obj_id,
- YAFFS_OBJECT_TYPE_FILE);
+ yaffs_find_or_create_by_number(dev, obj_id, YAFFS_OBJECT_TYPE_FILE);
if (!obj)
return;
obj->is_shadowed = 1;
yaffs_add_obj_to_dir(dev->unlinked_dir, obj);
obj->variant.file_variant.shrink_size = 0;
- obj->valid = 1; /* So that we don't read any other info for this file */
-
+ obj->valid = 1; /* So that we don't read any other info. */
}
-
-void yaffs_link_fixup(yaffs_dev_t *dev, yaffs_obj_t *hard_list)
+void yaffs_link_fixup(struct yaffs_dev *dev, struct list_head *hard_list)
{
- yaffs_obj_t *hl;
- yaffs_obj_t *in;
-
- while (hard_list) {
- hl = hard_list;
- hard_list = (yaffs_obj_t *) (hard_list->hard_links.next);
+ struct list_head *lh;
+ struct list_head *save;
+ struct yaffs_obj *hl;
+ struct yaffs_obj *in;
+ list_for_each_safe(lh, save, hard_list) {
+ hl = list_entry(lh, struct yaffs_obj, hard_links);
in = yaffs_find_by_number(dev,
- hl->variant.hardlink_variant.
- equiv_id);
+ hl->variant.hardlink_variant.equiv_id);
if (in) {
/* Add the hardlink pointers */
hl->variant.hardlink_variant.equiv_obj = in;
- ylist_add(&hl->hard_links, &in->hard_links);
+ list_add(&hl->hard_links, &in->hard_links);
} else {
/* Todo Need to report/handle this better.
* Got a problem... hardlink to a non-existant object
*/
hl->variant.hardlink_variant.equiv_obj = NULL;
- YINIT_LIST_HEAD(&hl->hard_links);
-
+ INIT_LIST_HEAD(&hl->hard_links);
}
}
}
-
-static void yaffs_strip_deleted_objs(yaffs_dev_t *dev)
+static void yaffs_strip_deleted_objs(struct yaffs_dev *dev)
{
/*
- * Sort out state of unlinked and deleted objects after scanning.
- */
- struct ylist_head *i;
- struct ylist_head *n;
- yaffs_obj_t *l;
+ * Sort out state of unlinked and deleted objects after scanning.
+ */
+ struct list_head *i;
+ struct list_head *n;
+ struct yaffs_obj *l;
if (dev->read_only)
return;
/* Soft delete all the unlinked files */
- ylist_for_each_safe(i, n,
- &dev->unlinked_dir->variant.dir_variant.children) {
- if (i) {
- l = ylist_entry(i, yaffs_obj_t, siblings);
- yaffs_del_obj(l);
- }
+ list_for_each_safe(i, n,
+ &dev->unlinked_dir->variant.dir_variant.children) {
+ l = list_entry(i, struct yaffs_obj, siblings);
+ yaffs_del_obj(l);
}
- ylist_for_each_safe(i, n,
- &dev->del_dir->variant.dir_variant.children) {
- if (i) {
- l = ylist_entry(i, yaffs_obj_t, siblings);
- yaffs_del_obj(l);
- }
+ list_for_each_safe(i, n, &dev->del_dir->variant.dir_variant.children) {
+ l = list_entry(i, struct yaffs_obj, siblings);
+ yaffs_del_obj(l);
}
-
}
/*
@@ -4229,30 +4212,30 @@ static void yaffs_strip_deleted_objs(yaffs_dev_t *dev)
* - Directly or indirectly under root.
*
* Note:
- * This code assumes that we don't ever change the current relationships between
- * directories:
+ * This code assumes that we don't ever change the current relationships
+ * between directories:
* root_dir->parent == unlinked_dir->parent == del_dir->parent == NULL
- * lostNfound->parent == root_dir
+ * lost-n-found->parent == root_dir
*
- * This fixes the problem where directories might have inadvertently been deleted
- * leaving the object "hanging" without being rooted in the directory tree.
+ * This fixes the problem where directories might have inadvertently been
+ * deleted leaving the object "hanging" without being rooted in the
+ * directory tree.
*/
-
-static int yaffs_has_null_parent(yaffs_dev_t *dev, yaffs_obj_t *obj)
+
+static int yaffs_has_null_parent(struct yaffs_dev *dev, struct yaffs_obj *obj)
{
return (obj == dev->del_dir ||
- obj == dev->unlinked_dir||
- obj == dev->root_dir);
+ obj == dev->unlinked_dir || obj == dev->root_dir);
}
-static void yaffs_fix_hanging_objs(yaffs_dev_t *dev)
+static void yaffs_fix_hanging_objs(struct yaffs_dev *dev)
{
- yaffs_obj_t *obj;
- yaffs_obj_t *parent;
+ struct yaffs_obj *obj;
+ struct yaffs_obj *parent;
int i;
- struct ylist_head *lh;
- struct ylist_head *n;
- int depthLimit;
+ struct list_head *lh;
+ struct list_head *n;
+ int depth_limit;
int hanging;
if (dev->read_only)
@@ -4263,375 +4246,137 @@ static void yaffs_fix_hanging_objs(yaffs_dev_t *dev)
* Make sure it is rooted.
*/
- for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) {
- ylist_for_each_safe(lh, n, &dev->obj_bucket[i].list) {
- if (lh) {
- obj = ylist_entry(lh, yaffs_obj_t, hash_link);
- parent= obj->parent;
-
- if(yaffs_has_null_parent(dev,obj)){
- /* These directories are not hanging */
- hanging = 0;
+ for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) {
+ list_for_each_safe(lh, n, &dev->obj_bucket[i].list) {
+ obj = list_entry(lh, struct yaffs_obj, hash_link);
+ parent = obj->parent;
+
+ if (yaffs_has_null_parent(dev, obj)) {
+ /* These directories are not hanging */
+ hanging = 0;
+ } else if (!parent ||
+ parent->variant_type !=
+ YAFFS_OBJECT_TYPE_DIRECTORY) {
+ hanging = 1;
+ } else if (yaffs_has_null_parent(dev, parent)) {
+ hanging = 0;
+ } else {
+ /*
+ * Need to follow the parent chain to
+ * see if it is hanging.
+ */
+ hanging = 0;
+ depth_limit = 100;
+
+ while (parent != dev->root_dir &&
+ parent->parent &&
+ parent->parent->variant_type ==
+ YAFFS_OBJECT_TYPE_DIRECTORY &&
+ depth_limit > 0) {
+ parent = parent->parent;
+ depth_limit--;
}
- else if(!parent || parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY)
+ if (parent != dev->root_dir)
hanging = 1;
- else if(yaffs_has_null_parent(dev,parent))
- hanging = 0;
- else {
- /*
- * Need to follow the parent chain to see if it is hanging.
- */
- hanging = 0;
- depthLimit=100;
-
- while(parent != dev->root_dir &&
- parent->parent &&
- parent->parent->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY &&
- depthLimit > 0){
- parent = parent->parent;
- depthLimit--;
- }
- if(parent != dev->root_dir)
- hanging = 1;
- }
- if(hanging){
- T(YAFFS_TRACE_SCAN,
- (TSTR("Hanging object %d moved to lost and found" TENDSTR),
- obj->obj_id));
- yaffs_add_obj_to_dir(dev->lost_n_found,obj);
- }
+ }
+ if (hanging) {
+ yaffs_trace(YAFFS_TRACE_SCAN,
+ "Hanging object %d moved to lost and found",
+ obj->obj_id);
+ yaffs_add_obj_to_dir(dev->lost_n_found, obj);
}
}
}
}
-
/*
* Delete directory contents for cleaning up lost and found.
*/
-static void yaffs_del_dir_contents(yaffs_obj_t *dir)
-{
- yaffs_obj_t *obj;
- struct ylist_head *lh;
- struct ylist_head *n;
-
- if(dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY)
- YBUG();
-
- ylist_for_each_safe(lh, n, &dir->variant.dir_variant.children) {
- if (lh) {
- obj = ylist_entry(lh, yaffs_obj_t, siblings);
- if(obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY)
- yaffs_del_dir_contents(obj);
-
- T(YAFFS_TRACE_SCAN,
- (TSTR("Deleting lost_found object %d" TENDSTR),
- obj->obj_id));
-
- /* Need to use UnlinkObject since Delete would not handle
- * hardlinked objects correctly.
- */
- yaffs_unlink_obj(obj);
- }
- }
-
-}
-
-static void yaffs_empty_l_n_f(yaffs_dev_t *dev)
+static void yaffs_del_dir_contents(struct yaffs_obj *dir)
{
- yaffs_del_dir_contents(dev->lost_n_found);
-}
-
-static void yaffs_check_obj_details_loaded(yaffs_obj_t *in)
-{
- __u8 *chunkData;
- yaffs_obj_header *oh;
- yaffs_dev_t *dev;
- yaffs_ext_tags tags;
- int result;
- int alloc_failed = 0;
-
- if (!in)
- return;
-
- dev = in->my_dev;
-
-#if 0
- T(YAFFS_TRACE_SCAN, (TSTR("details for object %d %s loaded" TENDSTR),
- in->obj_id,
- in->lazy_loaded ? "not yet" : "already"));
-#endif
+ struct yaffs_obj *obj;
+ struct list_head *lh;
+ struct list_head *n;
- if (in->lazy_loaded && in->hdr_chunk > 0) {
- in->lazy_loaded = 0;
- chunkData = yaffs_get_temp_buffer(dev, __LINE__);
-
- result = yaffs_rd_chunk_tags_nand(dev, in->hdr_chunk, chunkData, &tags);
- oh = (yaffs_obj_header *) chunkData;
-
- in->yst_mode = oh->yst_mode;
-#ifdef CONFIG_YAFFS_WINCE
- in->win_atime[0] = oh->win_atime[0];
- in->win_ctime[0] = oh->win_ctime[0];
- in->win_mtime[0] = oh->win_mtime[0];
- in->win_atime[1] = oh->win_atime[1];
- in->win_ctime[1] = oh->win_ctime[1];
- in->win_mtime[1] = oh->win_mtime[1];
-#else
- in->yst_uid = oh->yst_uid;
- in->yst_gid = oh->yst_gid;
- in->yst_atime = oh->yst_atime;
- in->yst_mtime = oh->yst_mtime;
- in->yst_ctime = oh->yst_ctime;
- in->yst_rdev = oh->yst_rdev;
+ if (dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY)
+ BUG();
-#endif
- yaffs_set_obj_name_from_oh(in, oh);
-
- if (in->variant_type == YAFFS_OBJECT_TYPE_SYMLINK) {
- in->variant.symlink_variant.alias =
- yaffs_clone_str(oh->alias);
- if (!in->variant.symlink_variant.alias)
- alloc_failed = 1; /* Not returned to caller */
- }
-
- yaffs_release_temp_buffer(dev, chunkData, __LINE__);
+ list_for_each_safe(lh, n, &dir->variant.dir_variant.children) {
+ obj = list_entry(lh, struct yaffs_obj, siblings);
+ if (obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY)
+ yaffs_del_dir_contents(obj);
+ yaffs_trace(YAFFS_TRACE_SCAN,
+ "Deleting lost_found object %d",
+ obj->obj_id);
+ yaffs_unlink_obj(obj);
}
}
-/*------------------------------ Directory Functions ----------------------------- */
-
-/*
- *yaffs_update_parent() handles fixing a directories mtime and ctime when a new
- * link (ie. name) is created or deleted in the directory.
- *
- * ie.
- * create dir/a : update dir's mtime/ctime
- * rm dir/a: update dir's mtime/ctime
- * modify dir/a: don't update dir's mtimme/ctime
- *
- * This can be handled immediately or defered. Defering helps reduce the number
- * of updates when many files in a directory are changed within a brief period.
- *
- * If the directory updating is defered then yaffs_update_dirty_dirs must be
- * called periodically.
- */
-
-static void yaffs_update_parent(yaffs_obj_t *obj)
-{
- yaffs_dev_t *dev;
- if(!obj)
- return;
-#ifndef CONFIG_YAFFS_WINCE
-
- dev = obj->my_dev;
- obj->dirty = 1;
- obj->yst_mtime = obj->yst_ctime = Y_CURRENT_TIME;
- if(dev->param.defered_dir_update){
- struct ylist_head *link = &obj->variant.dir_variant.dirty;
-
- if(ylist_empty(link)){
- ylist_add(link,&dev->dirty_dirs);
- T(YAFFS_TRACE_BACKGROUND, (TSTR("Added object %d to dirty directories" TENDSTR),obj->obj_id));
- }
-
- } else
- yaffs_update_oh(obj, NULL, 0, 0, 0, NULL);
-#endif
-}
-
-void yaffs_update_dirty_dirs(yaffs_dev_t *dev)
+static void yaffs_empty_l_n_f(struct yaffs_dev *dev)
{
- struct ylist_head *link;
- yaffs_obj_t *obj;
- yaffs_dir_s *dS;
- yaffs_obj_variant *oV;
-
- T(YAFFS_TRACE_BACKGROUND, (TSTR("Update dirty directories" TENDSTR)));
-
- while(!ylist_empty(&dev->dirty_dirs)){
- link = dev->dirty_dirs.next;
- ylist_del_init(link);
-
- dS=ylist_entry(link,yaffs_dir_s,dirty);
- oV = ylist_entry(dS,yaffs_obj_variant,dir_variant);
- obj = ylist_entry(oV,yaffs_obj_t,variant);
-
- T(YAFFS_TRACE_BACKGROUND, (TSTR("Update directory %d" TENDSTR), obj->obj_id));
-
- if(obj->dirty)
- yaffs_update_oh(obj, NULL, 0, 0, 0, NULL);
- }
-}
-
-static void yaffs_remove_obj_from_dir(yaffs_obj_t *obj)
-{
- yaffs_dev_t *dev = obj->my_dev;
- yaffs_obj_t *parent;
-
- yaffs_verify_obj_in_dir(obj);
- parent = obj->parent;
-
- yaffs_verify_dir(parent);
-
- if (dev && dev->param.remove_obj_fn)
- dev->param.remove_obj_fn(obj);
-
-
- ylist_del_init(&obj->siblings);
- obj->parent = NULL;
-
- yaffs_verify_dir(parent);
+ yaffs_del_dir_contents(dev->lost_n_found);
}
-void yaffs_add_obj_to_dir(yaffs_obj_t *directory,
- yaffs_obj_t *obj)
-{
- if (!directory) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR
- ("tragedy: Trying to add an object to a null pointer directory"
- TENDSTR)));
- YBUG();
- return;
- }
- if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR
- ("tragedy: Trying to add an object to a non-directory"
- TENDSTR)));
- YBUG();
- }
-
- if (obj->siblings.prev == NULL) {
- /* Not initialised */
- YBUG();
- }
-
-
- yaffs_verify_dir(directory);
- yaffs_remove_obj_from_dir(obj);
-
-
- /* Now add it */
- ylist_add(&obj->siblings, &directory->variant.dir_variant.children);
- obj->parent = directory;
-
- if (directory == obj->my_dev->unlinked_dir
- || directory == obj->my_dev->del_dir) {
- obj->unlinked = 1;
- obj->my_dev->n_unlinked_files++;
- obj->rename_allowed = 0;
- }
-
- yaffs_verify_dir(directory);
- yaffs_verify_obj_in_dir(obj);
-}
-
-yaffs_obj_t *yaffs_find_by_name(yaffs_obj_t *directory,
+struct yaffs_obj *yaffs_find_by_name(struct yaffs_obj *directory,
const YCHAR *name)
{
int sum;
-
- struct ylist_head *i;
+ struct list_head *i;
YCHAR buffer[YAFFS_MAX_NAME_LENGTH + 1];
-
- yaffs_obj_t *l;
+ struct yaffs_obj *l;
if (!name)
return NULL;
if (!directory) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR
- ("tragedy: yaffs_find_by_name: null pointer directory"
- TENDSTR)));
- YBUG();
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "tragedy: yaffs_find_by_name: null pointer directory"
+ );
+ BUG();
return NULL;
}
if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR
- ("tragedy: yaffs_find_by_name: non-directory" TENDSTR)));
- YBUG();
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "tragedy: yaffs_find_by_name: non-directory"
+ );
+ BUG();
}
sum = yaffs_calc_name_sum(name);
- ylist_for_each(i, &directory->variant.dir_variant.children) {
- if (i) {
- l = ylist_entry(i, yaffs_obj_t, siblings);
+ list_for_each(i, &directory->variant.dir_variant.children) {
+ l = list_entry(i, struct yaffs_obj, siblings);
- if (l->parent != directory)
- YBUG();
+ if (l->parent != directory)
+ BUG();
- yaffs_check_obj_details_loaded(l);
+ yaffs_check_obj_details_loaded(l);
- /* Special case for lost-n-found */
- if (l->obj_id == YAFFS_OBJECTID_LOSTNFOUND) {
- if (yaffs_strcmp(name, YAFFS_LOSTNFOUND_NAME) == 0)
- return l;
- } else if (yaffs_sum_cmp(l->sum, sum) || l->hdr_chunk <= 0) {
- /* LostnFound chunk called Objxxx
- * Do a real check
- */
- yaffs_get_obj_name(l, buffer,
- YAFFS_MAX_NAME_LENGTH + 1);
- if (yaffs_strncmp(name, buffer, YAFFS_MAX_NAME_LENGTH) == 0)
- return l;
- }
+ /* Special case for lost-n-found */
+ if (l->obj_id == YAFFS_OBJECTID_LOSTNFOUND) {
+ if (!strcmp(name, YAFFS_LOSTNFOUND_NAME))
+ return l;
+ } else if (l->sum == sum || l->hdr_chunk <= 0) {
+ /* LostnFound chunk called Objxxx
+ * Do a real check
+ */
+ yaffs_get_obj_name(l, buffer,
+ YAFFS_MAX_NAME_LENGTH + 1);
+ if (!strncmp(name, buffer, YAFFS_MAX_NAME_LENGTH))
+ return l;
}
}
-
return NULL;
}
-
-#if 0
-int yaffs_ApplyToDirectoryChildren(yaffs_obj_t *the_dir,
- int (*fn) (yaffs_obj_t *))
-{
- struct ylist_head *i;
- yaffs_obj_t *l;
-
- if (!the_dir) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR
- ("tragedy: yaffs_find_by_name: null pointer directory"
- TENDSTR)));
- YBUG();
- return YAFFS_FAIL;
- }
- if (the_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR
- ("tragedy: yaffs_find_by_name: non-directory" TENDSTR)));
- YBUG();
- return YAFFS_FAIL;
- }
-
- ylist_for_each(i, &the_dir->variant.dir_variant.children) {
- if (i) {
- l = ylist_entry(i, yaffs_obj_t, siblings);
- if (l && !fn(l))
- return YAFFS_FAIL;
- }
- }
-
- return YAFFS_OK;
-
-}
-#endif
-
/* GetEquivalentObject dereferences any hard links to get to the
* actual object.
*/
-yaffs_obj_t *yaffs_get_equivalent_obj(yaffs_obj_t *obj)
+struct yaffs_obj *yaffs_get_equivalent_obj(struct yaffs_obj *obj)
{
if (obj && obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) {
- /* We want the object id of the equivalent object, not this one */
obj = obj->variant.hardlink_variant.equiv_obj;
yaffs_check_obj_details_loaded(obj);
}
@@ -4651,173 +4396,106 @@ yaffs_obj_t *yaffs_get_equivalent_obj(yaffs_obj_t *obj)
* system to share files.
*
* These automatic unicode are stored slightly differently...
- * - If the name can fit in the ASCII character space then they are saved as
+ * - If the name can fit in the ASCII character space then they are saved as
* ascii names as per above.
* - If the name needs Unicode then the name is saved in Unicode
* starting at oh->name[1].
*/
-static void yaffs_fix_null_name(yaffs_obj_t * obj,YCHAR * name, int buffer_size)
+static void yaffs_fix_null_name(struct yaffs_obj *obj, YCHAR *name,
+ int buffer_size)
{
/* Create an object name if we could not find one. */
- if(yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH) == 0){
- YCHAR locName[20];
- YCHAR numString[20];
- YCHAR *x = &numString[19];
+ if (strnlen(name, YAFFS_MAX_NAME_LENGTH) == 0) {
+ YCHAR local_name[20];
+ YCHAR num_string[20];
+ YCHAR *x = &num_string[19];
unsigned v = obj->obj_id;
- numString[19] = 0;
- while(v>0){
+ num_string[19] = 0;
+ while (v > 0) {
x--;
*x = '0' + (v % 10);
v /= 10;
}
/* make up a name */
- yaffs_strcpy(locName, YAFFS_LOSTNFOUND_PREFIX);
- yaffs_strcat(locName,x);
- yaffs_strncpy(name, locName, buffer_size - 1);
- }
-}
-
-static void yaffs_load_name_from_oh(yaffs_dev_t *dev,YCHAR *name, const YCHAR *ohName, int bufferSize)
-{
-#ifdef CONFIG_YAFFS_AUTO_UNICODE
- if(dev->param.auto_unicode){
- if(*ohName){
- /* It is an ASCII name, so do an ASCII to unicode conversion */
- const char *asciiOhName = (const char *)ohName;
- int n = bufferSize - 1;
- while(n > 0 && *asciiOhName){
- *name = *asciiOhName;
- name++;
- asciiOhName++;
- n--;
- }
- } else
- yaffs_strncpy(name,ohName+1, bufferSize -1);
- } else
-#endif
- yaffs_strncpy(name, ohName, bufferSize - 1);
-}
-
-
-static void yaffs_load_oh_from_name(yaffs_dev_t *dev, YCHAR *ohName, const YCHAR *name)
-{
-#ifdef CONFIG_YAFFS_AUTO_UNICODE
-
- int isAscii;
- YCHAR *w;
-
- if(dev->param.auto_unicode){
-
- isAscii = 1;
- w = name;
-
- /* Figure out if the name will fit in ascii character set */
- while(isAscii && *w){
- if((*w) & 0xff00)
- isAscii = 0;
- w++;
- }
-
- if(isAscii){
- /* It is an ASCII name, so do a unicode to ascii conversion */
- char *asciiOhName = (char *)ohName;
- int n = YAFFS_MAX_NAME_LENGTH - 1;
- while(n > 0 && *name){
- *asciiOhName= *name;
- name++;
- asciiOhName++;
- n--;
- }
- } else{
- /* It is a unicode name, so save starting at the second YCHAR */
- *ohName = 0;
- yaffs_strncpy(ohName+1,name, YAFFS_MAX_NAME_LENGTH -2);
- }
+ strcpy(local_name, YAFFS_LOSTNFOUND_PREFIX);
+ strcat(local_name, x);
+ strncpy(name, local_name, buffer_size - 1);
}
- else
-#endif
- yaffs_strncpy(ohName,name, YAFFS_MAX_NAME_LENGTH - 1);
-
}
-int yaffs_get_obj_name(yaffs_obj_t * obj, YCHAR * name, int buffer_size)
+int yaffs_get_obj_name(struct yaffs_obj *obj, YCHAR *name, int buffer_size)
{
memset(name, 0, buffer_size * sizeof(YCHAR));
-
yaffs_check_obj_details_loaded(obj);
-
if (obj->obj_id == YAFFS_OBJECTID_LOSTNFOUND) {
- yaffs_strncpy(name, YAFFS_LOSTNFOUND_NAME, buffer_size - 1);
- }
-#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
- else if (obj->short_name[0]) {
- yaffs_strcpy(name, obj->short_name);
- }
-#endif
- else if(obj->hdr_chunk > 0) {
+ strncpy(name, YAFFS_LOSTNFOUND_NAME, buffer_size - 1);
+ } else if (obj->short_name[0]) {
+ strcpy(name, obj->short_name);
+ } else if (obj->hdr_chunk > 0) {
int result;
- __u8 *buffer = yaffs_get_temp_buffer(obj->my_dev, __LINE__);
+ u8 *buffer = yaffs_get_temp_buffer(obj->my_dev);
- yaffs_obj_header *oh = (yaffs_obj_header *) buffer;
+ struct yaffs_obj_hdr *oh = (struct yaffs_obj_hdr *)buffer;
memset(buffer, 0, obj->my_dev->data_bytes_per_chunk);
if (obj->hdr_chunk > 0) {
result = yaffs_rd_chunk_tags_nand(obj->my_dev,
- obj->hdr_chunk, buffer,
- NULL);
+ obj->hdr_chunk,
+ buffer, NULL);
}
- yaffs_load_name_from_oh(obj->my_dev,name,oh->name,buffer_size);
+ yaffs_load_name_from_oh(obj->my_dev, name, oh->name,
+ buffer_size);
- yaffs_release_temp_buffer(obj->my_dev, buffer, __LINE__);
+ yaffs_release_temp_buffer(obj->my_dev, buffer);
}
- yaffs_fix_null_name(obj,name,buffer_size);
+ yaffs_fix_null_name(obj, name, buffer_size);
- return yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH);
+ return strnlen(name, YAFFS_MAX_NAME_LENGTH);
}
-
-int yaffs_get_obj_length(yaffs_obj_t *obj)
+loff_t yaffs_get_obj_length(struct yaffs_obj *obj)
{
/* Dereference any hard linking */
obj = yaffs_get_equivalent_obj(obj);
if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE)
return obj->variant.file_variant.file_size;
- if (obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK){
- if(!obj->variant.symlink_variant.alias)
+ if (obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK) {
+ if (!obj->variant.symlink_variant.alias)
return 0;
- return yaffs_strnlen(obj->variant.symlink_variant.alias,YAFFS_MAX_ALIAS_LENGTH);
+ return strnlen(obj->variant.symlink_variant.alias,
+ YAFFS_MAX_ALIAS_LENGTH);
} else {
/* Only a directory should drop through to here */
return obj->my_dev->data_bytes_per_chunk;
}
}
-int yaffs_get_obj_link_count(yaffs_obj_t *obj)
+int yaffs_get_obj_link_count(struct yaffs_obj *obj)
{
int count = 0;
- struct ylist_head *i;
+ struct list_head *i;
if (!obj->unlinked)
- count++; /* the object itself */
+ count++; /* the object itself */
- ylist_for_each(i, &obj->hard_links)
- count++; /* add the hard links; */
+ list_for_each(i, &obj->hard_links)
+ count++; /* add the hard links; */
return count;
}
-int yaffs_get_obj_inode(yaffs_obj_t *obj)
+int yaffs_get_obj_inode(struct yaffs_obj *obj)
{
obj = yaffs_get_equivalent_obj(obj);
return obj->obj_id;
}
-unsigned yaffs_get_obj_type(yaffs_obj_t *obj)
+unsigned yaffs_get_obj_type(struct yaffs_obj *obj)
{
obj = yaffs_get_equivalent_obj(obj);
@@ -4843,13 +4521,15 @@ unsigned yaffs_get_obj_type(yaffs_obj_t *obj)
return DT_BLK;
if (S_ISSOCK(obj->yst_mode))
return DT_SOCK;
+ return DT_REG;
+ break;
default:
return DT_REG;
break;
}
}
-YCHAR *yaffs_get_symlink_alias(yaffs_obj_t *obj)
+YCHAR *yaffs_get_symlink_alias(struct yaffs_obj *obj)
{
obj = yaffs_get_equivalent_obj(obj);
if (obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK)
@@ -4858,276 +4538,82 @@ YCHAR *yaffs_get_symlink_alias(yaffs_obj_t *obj)
return yaffs_clone_str(_Y(""));
}
-#ifndef CONFIG_YAFFS_WINCE
-
-int yaffs_set_attribs(yaffs_obj_t *obj, struct iattr *attr)
-{
- unsigned int valid = attr->ia_valid;
-
- if (valid & ATTR_MODE)
- obj->yst_mode = attr->ia_mode;
- if (valid & ATTR_UID)
- obj->yst_uid = attr->ia_uid;
- if (valid & ATTR_GID)
- obj->yst_gid = attr->ia_gid;
-
- if (valid & ATTR_ATIME)
- obj->yst_atime = Y_TIME_CONVERT(attr->ia_atime);
- if (valid & ATTR_CTIME)
- obj->yst_ctime = Y_TIME_CONVERT(attr->ia_ctime);
- if (valid & ATTR_MTIME)
- obj->yst_mtime = Y_TIME_CONVERT(attr->ia_mtime);
-
- if (valid & ATTR_SIZE)
- yaffs_resize_file(obj, attr->ia_size);
-
- yaffs_update_oh(obj, NULL, 1, 0, 0, NULL);
-
- return YAFFS_OK;
-
-}
-int yaffs_get_attribs(yaffs_obj_t *obj, struct iattr *attr)
-{
- unsigned int valid = 0;
-
- attr->ia_mode = obj->yst_mode;
- valid |= ATTR_MODE;
- attr->ia_uid = obj->yst_uid;
- valid |= ATTR_UID;
- attr->ia_gid = obj->yst_gid;
- valid |= ATTR_GID;
-
- Y_TIME_CONVERT(attr->ia_atime) = obj->yst_atime;
- valid |= ATTR_ATIME;
- Y_TIME_CONVERT(attr->ia_ctime) = obj->yst_ctime;
- valid |= ATTR_CTIME;
- Y_TIME_CONVERT(attr->ia_mtime) = obj->yst_mtime;
- valid |= ATTR_MTIME;
-
- attr->ia_size = yaffs_get_file_size(obj);
- valid |= ATTR_SIZE;
-
- attr->ia_valid = valid;
-
- return YAFFS_OK;
-}
-
-#endif
-
-
-static int yaffs_do_xattrib_mod(yaffs_obj_t *obj, int set, const YCHAR *name, const void *value, int size, int flags)
-{
- yaffs_xattr_mod xmod;
-
- int result;
-
- xmod.set = set;
- xmod.name = name;
- xmod.data = value;
- xmod.size = size;
- xmod.flags = flags;
- xmod.result = -ENOSPC;
-
- result = yaffs_update_oh(obj, NULL, 0, 0, 0, &xmod);
-
- if(result > 0)
- return xmod.result;
- else
- return -ENOSPC;
-}
-
-static int yaffs_apply_xattrib_mod(yaffs_obj_t *obj, char *buffer, yaffs_xattr_mod *xmod)
-{
- int retval = 0;
- int x_offs = sizeof(yaffs_obj_header);
- yaffs_dev_t *dev = obj->my_dev;
- int x_size = dev->data_bytes_per_chunk - sizeof(yaffs_obj_header);
-
- char * x_buffer = buffer + x_offs;
-
- if(xmod->set)
- retval = nval_set(x_buffer, x_size, xmod->name, xmod->data, xmod->size, xmod->flags);
- else
- retval = nval_del(x_buffer, x_size, xmod->name);
-
- obj->has_xattr = nval_hasvalues(x_buffer, x_size);
- obj->xattr_known = 1;
-
- xmod->result = retval;
-
- return retval;
-}
-
-static int yaffs_do_xattrib_fetch(yaffs_obj_t *obj, const YCHAR *name, void *value, int size)
-{
- char *buffer = NULL;
- int result;
- yaffs_ext_tags tags;
- yaffs_dev_t *dev = obj->my_dev;
- int x_offs = sizeof(yaffs_obj_header);
- int x_size = dev->data_bytes_per_chunk - sizeof(yaffs_obj_header);
-
- char * x_buffer;
-
- int retval = 0;
-
- if(obj->hdr_chunk < 1)
- return -ENODATA;
-
- /* If we know that the object has no xattribs then don't do all the
- * reading and parsing.
- */
- if(obj->xattr_known && !obj->has_xattr){
- if(name)
- return -ENODATA;
- else
- return 0;
- }
-
- buffer = (char *) yaffs_get_temp_buffer(dev, __LINE__);
- if(!buffer)
- return -ENOMEM;
-
- result = yaffs_rd_chunk_tags_nand(dev,obj->hdr_chunk, (__u8 *)buffer, &tags);
-
- if(result != YAFFS_OK)
- retval = -ENOENT;
- else{
- x_buffer = buffer + x_offs;
-
- if (!obj->xattr_known){
- obj->has_xattr = nval_hasvalues(x_buffer, x_size);
- obj->xattr_known = 1;
- }
-
- if(name)
- retval = nval_get(x_buffer, x_size, name, value, size);
- else
- retval = nval_list(x_buffer, x_size, value,size);
- }
- yaffs_release_temp_buffer(dev,(__u8 *)buffer,__LINE__);
- return retval;
-}
-
-int yaffs_set_xattrib(yaffs_obj_t *obj, const YCHAR *name, const void * value, int size, int flags)
-{
- return yaffs_do_xattrib_mod(obj, 1, name, value, size, flags);
-}
-
-int yaffs_remove_xattrib(yaffs_obj_t *obj, const YCHAR *name)
-{
- return yaffs_do_xattrib_mod(obj, 0, name, NULL, 0, 0);
-}
-
-int yaffs_get_xattrib(yaffs_obj_t *obj, const YCHAR *name, void *value, int size)
-{
- return yaffs_do_xattrib_fetch(obj, name, value, size);
-}
-
-int yaffs_list_xattrib(yaffs_obj_t *obj, char *buffer, int size)
-{
- return yaffs_do_xattrib_fetch(obj, NULL, buffer,size);
-}
-
-
-
-#if 0
-int yaffs_dump_obj(yaffs_obj_t *obj)
-{
- YCHAR name[257];
-
- yaffs_get_obj_name(obj, name, YAFFS_MAX_NAME_LENGTH + 1);
-
- T(YAFFS_TRACE_ALWAYS,
- (TSTR
- ("Object %d, inode %d \"%s\"\n dirty %d valid %d serial %d sum %d"
- " chunk %d type %d size %d\n"
- TENDSTR), obj->obj_id, yaffs_get_obj_inode(obj), name,
- obj->dirty, obj->valid, obj->serial, obj->sum, obj->hdr_chunk,
- yaffs_get_obj_type(obj), yaffs_get_obj_length(obj)));
-
- return YAFFS_OK;
-}
-#endif
-
-/*---------------------------- Initialisation code -------------------------------------- */
+/*--------------------------- Initialisation code -------------------------- */
-static int yaffs_cehck_dev_fns(const yaffs_dev_t *dev)
+static int yaffs_check_dev_fns(struct yaffs_dev *dev)
{
+ struct yaffs_driver *drv = &dev->drv;
+ struct yaffs_tags_handler *tagger = &dev->tagger;
/* Common functions, gotta have */
- if (!dev->param.erase_fn || !dev->param.initialise_flash_fn)
+ if (!drv->drv_read_chunk_fn ||
+ !drv->drv_write_chunk_fn ||
+ !drv->drv_erase_fn)
return 0;
-#ifdef CONFIG_YAFFS_YAFFS2
+ if (dev->param.is_yaffs2 &&
+ (!drv->drv_mark_bad_fn || !drv->drv_check_bad_fn))
+ return 0;
- /* Can use the "with tags" style interface for yaffs1 or yaffs2 */
- if (dev->param.write_chunk_tags_fn &&
- dev->param.read_chunk_tags_fn &&
- !dev->param.write_chunk_fn &&
- !dev->param.read_chunk_fn &&
- dev->param.bad_block_fn &&
- dev->param.query_block_fn)
- return 1;
-#endif
+ /* Install the default tags marshalling functions if needed. */
+ yaffs_tags_compat_install(dev);
+ yaffs_tags_marshall_install(dev);
- /* Can use the "spare" style interface for yaffs1 */
- if (!dev->param.is_yaffs2 &&
- !dev->param.write_chunk_tags_fn &&
- !dev->param.read_chunk_tags_fn &&
- dev->param.write_chunk_fn &&
- dev->param.read_chunk_fn &&
- !dev->param.bad_block_fn &&
- !dev->param.query_block_fn)
- return 1;
+ /* Check we now have the marshalling functions required. */
+ if (!tagger->write_chunk_tags_fn ||
+ !tagger->read_chunk_tags_fn ||
+ !tagger->query_block_fn ||
+ !tagger->mark_bad_fn)
+ return 0;
- return 0; /* bad */
+ return 1;
}
-
-static int yaffs_create_initial_dir(yaffs_dev_t *dev)
+static int yaffs_create_initial_dir(struct yaffs_dev *dev)
{
- /* Initialise the unlinked, deleted, root and lost and found directories */
-
- dev->lost_n_found = dev->root_dir = NULL;
+ /* Initialise the unlinked, deleted, root and lost+found directories */
+ dev->lost_n_found = dev->root_dir = NULL;
dev->unlinked_dir = dev->del_dir = NULL;
-
dev->unlinked_dir =
yaffs_create_fake_dir(dev, YAFFS_OBJECTID_UNLINKED, S_IFDIR);
-
dev->del_dir =
yaffs_create_fake_dir(dev, YAFFS_OBJECTID_DELETED, S_IFDIR);
-
dev->root_dir =
yaffs_create_fake_dir(dev, YAFFS_OBJECTID_ROOT,
- YAFFS_ROOT_MODE | S_IFDIR);
+ YAFFS_ROOT_MODE | S_IFDIR);
dev->lost_n_found =
yaffs_create_fake_dir(dev, YAFFS_OBJECTID_LOSTNFOUND,
- YAFFS_LOSTNFOUND_MODE | S_IFDIR);
+ YAFFS_LOSTNFOUND_MODE | S_IFDIR);
- if (dev->lost_n_found && dev->root_dir && dev->unlinked_dir && dev->del_dir) {
+ if (dev->lost_n_found && dev->root_dir && dev->unlinked_dir
+ && dev->del_dir) {
yaffs_add_obj_to_dir(dev->root_dir, dev->lost_n_found);
return YAFFS_OK;
}
-
return YAFFS_FAIL;
}
-int yaffs_guts_initialise(yaffs_dev_t *dev)
+/* Low level init.
+ * Typically only used by yaffs_guts_initialise, but also used by the
+ * Low level yaffs driver tests.
+ */
+
+int yaffs_guts_ll_init(struct yaffs_dev *dev)
{
- int init_failed = 0;
- unsigned x;
- int bits;
- T(YAFFS_TRACE_TRACING, (TSTR("yaffs: yaffs_guts_initialise()" TENDSTR)));
- /* Check stuff that must be set */
+ yaffs_trace(YAFFS_TRACE_TRACING, "yaffs: yaffs_ll_init()");
if (!dev) {
- T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Need a device" TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "yaffs: Need a device"
+ );
return YAFFS_FAIL;
}
+ if (dev->ll_init)
+ return YAFFS_OK;
+
dev->internal_start_block = dev->param.start_block;
dev->internal_end_block = dev->param.end_block;
dev->block_offset = 0;
@@ -5145,57 +4631,88 @@ int yaffs_guts_initialise(yaffs_dev_t *dev)
/* Check geometry parameters. */
- if ((!dev->param.inband_tags && dev->param.is_yaffs2 && dev->param.total_bytes_per_chunk < 1024) ||
- (!dev->param.is_yaffs2 && dev->param.total_bytes_per_chunk < 512) ||
- (dev->param.inband_tags && !dev->param.is_yaffs2) ||
- dev->param.chunks_per_block < 2 ||
- dev->param.n_reserved_blocks < 2 ||
- dev->internal_start_block <= 0 ||
- dev->internal_end_block <= 0 ||
- dev->internal_end_block <= (dev->internal_start_block + dev->param.n_reserved_blocks + 2)) { /* otherwise it is too small */
- T(YAFFS_TRACE_ALWAYS,
- (TSTR
- ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s, inband_tags %d "
- TENDSTR), dev->param.total_bytes_per_chunk, dev->param.is_yaffs2 ? "2" : "", dev->param.inband_tags));
- return YAFFS_FAIL;
- }
-
- if (yaffs_init_nand(dev) != YAFFS_OK) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs: InitialiseNAND failed" TENDSTR)));
+ if ((!dev->param.inband_tags && dev->param.is_yaffs2 &&
+ dev->param.total_bytes_per_chunk < 1024) ||
+ (!dev->param.is_yaffs2 &&
+ dev->param.total_bytes_per_chunk < 512) ||
+ (dev->param.inband_tags && !dev->param.is_yaffs2) ||
+ dev->param.chunks_per_block < 2 ||
+ dev->param.n_reserved_blocks < 2 ||
+ dev->internal_start_block <= 0 ||
+ dev->internal_end_block <= 0 ||
+ dev->internal_end_block <=
+ (dev->internal_start_block + dev->param.n_reserved_blocks + 2)
+ ) {
+ /* otherwise it is too small */
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "NAND geometry problems: chunk size %d, type is yaffs%s, inband_tags %d ",
+ dev->param.total_bytes_per_chunk,
+ dev->param.is_yaffs2 ? "2" : "",
+ dev->param.inband_tags);
return YAFFS_FAIL;
}
/* Sort out space for inband tags, if required */
if (dev->param.inband_tags)
- dev->data_bytes_per_chunk = dev->param.total_bytes_per_chunk - sizeof(yaffs_PackedTags2TagsPart);
+ dev->data_bytes_per_chunk =
+ dev->param.total_bytes_per_chunk -
+ sizeof(struct yaffs_packed_tags2_tags_only);
else
dev->data_bytes_per_chunk = dev->param.total_bytes_per_chunk;
/* Got the right mix of functions? */
- if (!yaffs_cehck_dev_fns(dev)) {
+ if (!yaffs_check_dev_fns(dev)) {
/* Function missing */
- T(YAFFS_TRACE_ALWAYS,
- (TSTR
- ("yaffs: device function(s) missing or wrong\n" TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "device function(s) missing or wrong");
return YAFFS_FAIL;
}
- /* This is really a compilation check. */
- if (!yaffs_check_structures()) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs_check_structures failed\n" TENDSTR)));
+ if (yaffs_init_nand(dev) != YAFFS_OK) {
+ yaffs_trace(YAFFS_TRACE_ALWAYS, "InitialiseNAND failed");
return YAFFS_FAIL;
}
- if (dev->is_mounted) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs: device already mounted\n" TENDSTR)));
+ return YAFFS_OK;
+}
+
+
+int yaffs_format_dev(struct yaffs_dev *dev)
+{
+ int i;
+ enum yaffs_block_state state;
+ u32 dummy;
+
+ if(yaffs_guts_ll_init(dev) != YAFFS_OK)
+ return YAFFS_FAIL;
+
+ if(dev->is_mounted)
return YAFFS_FAIL;
+
+ for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) {
+ yaffs_query_init_block_state(dev, i, &state, &dummy);
+ if (state != YAFFS_BLOCK_STATE_DEAD)
+ yaffs_erase_block(dev, i);
}
- /* Finished with most checks. One or two more checks happen later on too. */
+ return YAFFS_OK;
+}
+
+
+int yaffs_guts_initialise(struct yaffs_dev *dev)
+{
+ int init_failed = 0;
+ unsigned x;
+ int bits;
+
+ if(yaffs_guts_ll_init(dev) != YAFFS_OK)
+ return YAFFS_FAIL;
+
+ if (dev->is_mounted) {
+ yaffs_trace(YAFFS_TRACE_ALWAYS, "device already mounted");
+ return YAFFS_FAIL;
+ }
dev->is_mounted = 1;
@@ -5206,11 +4723,11 @@ int yaffs_guts_initialise(yaffs_dev_t *dev)
*/
x = dev->data_bytes_per_chunk;
/* We always use dev->chunk_shift and dev->chunk_div */
- dev->chunk_shift = Shifts(x);
+ dev->chunk_shift = calc_shifts(x);
x >>= dev->chunk_shift;
dev->chunk_div = x;
/* We only use chunk mask if chunk_div is 1 */
- dev->chunk_mask = (1<<dev->chunk_shift) - 1;
+ dev->chunk_mask = (1 << dev->chunk_shift) - 1;
/*
* Calculate chunk_grp_bits.
@@ -5219,7 +4736,7 @@ int yaffs_guts_initialise(yaffs_dev_t *dev)
x = dev->param.chunks_per_block * (dev->internal_end_block + 1);
- bits = ShiftsGE(x);
+ bits = calc_shifts_ceiling(x);
/* Set up tnode width if wide tnodes are enabled. */
if (!dev->param.wide_tnodes_disabled) {
@@ -5230,10 +4747,11 @@ int yaffs_guts_initialise(yaffs_dev_t *dev)
dev->tnode_width = 16;
else
dev->tnode_width = bits;
- } else
+ } else {
dev->tnode_width = 16;
+ }
- dev->tnode_mask = (1<<dev->tnode_width)-1;
+ dev->tnode_mask = (1 << dev->tnode_width) - 1;
/* Level0 Tnodes are 16 bits or wider (if wide tnodes are enabled),
* so if the bitwidth of the
@@ -5246,9 +4764,9 @@ int yaffs_guts_initialise(yaffs_dev_t *dev)
else
dev->chunk_grp_bits = bits - dev->tnode_width;
- dev->tnode_size = (dev->tnode_width * YAFFS_NTNODES_LEVEL0)/8;
- if(dev->tnode_size < sizeof(yaffs_tnode_t))
- dev->tnode_size = sizeof(yaffs_tnode_t);
+ dev->tnode_size = (dev->tnode_width * YAFFS_NTNODES_LEVEL0) / 8;
+ if (dev->tnode_size < sizeof(struct yaffs_tnode))
+ dev->tnode_size = sizeof(struct yaffs_tnode);
dev->chunk_grp_size = 1 << dev->chunk_grp_bits;
@@ -5257,13 +4775,12 @@ int yaffs_guts_initialise(yaffs_dev_t *dev)
* the chunk group size > chunks per block.
* This can be remedied by using larger "virtual blocks".
*/
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs: chunk group too large\n" TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_ALWAYS, "chunk group too large");
return YAFFS_FAIL;
}
- /* OK, we've finished verifying the device, lets continue with initialisation */
+ /* Finished verifying the device, continue with initialisation */
/* More device initialisation */
dev->all_gcs = 0;
@@ -5282,9 +4799,10 @@ int yaffs_guts_initialise(yaffs_dev_t *dev)
dev->n_tags_ecc_unfixed = 0;
dev->n_erase_failures = 0;
dev->n_erased_blocks = 0;
- dev->gc_disable= 0;
- dev->has_pending_prioritised_gc = 1; /* Assume the worst for now, will get fixed on first GC */
- YINIT_LIST_HEAD(&dev->dirty_dirs);
+ dev->gc_disable = 0;
+ dev->has_pending_prioritised_gc = 1;
+ /* Assume the worst for now, will get fixed on first GC */
+ INIT_LIST_HEAD(&dev->dirty_dirs);
dev->oldest_dirty_seq = 0;
dev->oldest_dirty_block = 0;
@@ -5295,28 +4813,28 @@ int yaffs_guts_initialise(yaffs_dev_t *dev)
dev->cache = NULL;
dev->gc_cleanup_list = NULL;
-
- if (!init_failed &&
- dev->param.n_caches > 0) {
+ if (!init_failed && dev->param.n_caches > 0) {
int i;
void *buf;
- int cacheBytes = dev->param.n_caches * sizeof(yaffs_cache_t);
+ int cache_bytes =
+ dev->param.n_caches * sizeof(struct yaffs_cache);
if (dev->param.n_caches > YAFFS_MAX_SHORT_OP_CACHES)
dev->param.n_caches = YAFFS_MAX_SHORT_OP_CACHES;
- dev->cache = YMALLOC(cacheBytes);
+ dev->cache = kmalloc(cache_bytes, GFP_NOFS);
- buf = (__u8 *) dev->cache;
+ buf = (u8 *) dev->cache;
if (dev->cache)
- memset(dev->cache, 0, cacheBytes);
+ memset(dev->cache, 0, cache_bytes);
for (i = 0; i < dev->param.n_caches && buf; i++) {
dev->cache[i].object = NULL;
dev->cache[i].last_use = 0;
dev->cache[i].dirty = 0;
- dev->cache[i].data = buf = YMALLOC_DMA(dev->param.total_bytes_per_chunk);
+ dev->cache[i].data = buf =
+ kmalloc(dev->param.total_bytes_per_chunk, GFP_NOFS);
}
if (!buf)
init_failed = 1;
@@ -5327,7 +4845,9 @@ int yaffs_guts_initialise(yaffs_dev_t *dev)
dev->cache_hits = 0;
if (!init_failed) {
- dev->gc_cleanup_list = YMALLOC(dev->param.chunks_per_block * sizeof(__u32));
+ dev->gc_cleanup_list =
+ kmalloc(dev->param.chunks_per_block * sizeof(u32),
+ GFP_NOFS);
if (!dev->gc_cleanup_list)
init_failed = 1;
}
@@ -5343,18 +4863,24 @@ int yaffs_guts_initialise(yaffs_dev_t *dev)
if (!init_failed && !yaffs_create_initial_dir(dev))
init_failed = 1;
+ if (!init_failed && dev->param.is_yaffs2 &&
+ !dev->param.disable_summary &&
+ !yaffs_summary_init(dev))
+ init_failed = 1;
if (!init_failed) {
/* Now scan the flash. */
if (dev->param.is_yaffs2) {
if (yaffs2_checkpt_restore(dev)) {
yaffs_check_obj_details_loaded(dev->root_dir);
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs: restored from checkpoint" TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT |
+ YAFFS_TRACE_MOUNT,
+ "yaffs: restored from checkpoint"
+ );
} else {
- /* Clean up the mess caused by an aborted checkpoint load
- * and scan backwards.
+ /* Clean up the mess caused by an aborted
+ * checkpoint load then scan backwards.
*/
yaffs_deinit_blocks(dev);
@@ -5373,25 +4899,27 @@ int yaffs_guts_initialise(yaffs_dev_t *dev)
yaffs_init_tnodes_and_objs(dev);
- if (!init_failed && !yaffs_create_initial_dir(dev))
+ if (!init_failed
+ && !yaffs_create_initial_dir(dev))
init_failed = 1;
if (!init_failed && !yaffs2_scan_backwards(dev))
init_failed = 1;
}
- } else if (!yaffs1_scan(dev))
- init_failed = 1;
+ } else if (!yaffs1_scan(dev)) {
+ init_failed = 1;
+ }
yaffs_strip_deleted_objs(dev);
yaffs_fix_hanging_objs(dev);
- if(dev->param.empty_lost_n_found)
+ if (dev->param.empty_lost_n_found)
yaffs_empty_l_n_f(dev);
}
if (init_failed) {
/* Clean up the mess */
- T(YAFFS_TRACE_TRACING,
- (TSTR("yaffs: yaffs_guts_initialise() aborted.\n" TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_TRACING,
+ "yaffs: yaffs_guts_initialise() aborted.");
yaffs_deinitialise(dev);
return YAFFS_FAIL;
@@ -5402,7 +4930,7 @@ int yaffs_guts_initialise(yaffs_dev_t *dev)
dev->n_page_writes = 0;
dev->n_erasures = 0;
dev->n_gc_copies = 0;
- dev->n_retired_writes = 0;
+ dev->n_retried_writes = 0;
dev->n_retired_blocks = 0;
@@ -5410,53 +4938,50 @@ int yaffs_guts_initialise(yaffs_dev_t *dev)
yaffs_verify_blocks(dev);
/* Clean up any aborted checkpoint data */
- if(!dev->is_checkpointed && dev->blocks_in_checkpt > 0)
+ if (!dev->is_checkpointed && dev->blocks_in_checkpt > 0)
yaffs2_checkpt_invalidate(dev);
- T(YAFFS_TRACE_TRACING,
- (TSTR("yaffs: yaffs_guts_initialise() done.\n" TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_TRACING,
+ "yaffs: yaffs_guts_initialise() done.");
return YAFFS_OK;
-
}
-void yaffs_deinitialise(yaffs_dev_t *dev)
+void yaffs_deinitialise(struct yaffs_dev *dev)
{
if (dev->is_mounted) {
int i;
yaffs_deinit_blocks(dev);
yaffs_deinit_tnodes_and_objs(dev);
- if (dev->param.n_caches > 0 &&
- dev->cache) {
+ yaffs_summary_deinit(dev);
+
+ if (dev->param.n_caches > 0 && dev->cache) {
for (i = 0; i < dev->param.n_caches; i++) {
- if (dev->cache[i].data)
- YFREE(dev->cache[i].data);
+ kfree(dev->cache[i].data);
dev->cache[i].data = NULL;
}
- YFREE(dev->cache);
+ kfree(dev->cache);
dev->cache = NULL;
}
- YFREE(dev->gc_cleanup_list);
+ kfree(dev->gc_cleanup_list);
for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++)
- YFREE(dev->temp_buffer[i].buffer);
+ kfree(dev->temp_buffer[i].buffer);
dev->is_mounted = 0;
- if (dev->param.deinitialise_flash_fn)
- dev->param.deinitialise_flash_fn(dev);
+ yaffs_deinit_nand(dev);
}
}
-int yaffs_count_free_chunks(yaffs_dev_t *dev)
+int yaffs_count_free_chunks(struct yaffs_dev *dev)
{
- int nFree=0;
+ int n_free = 0;
int b;
-
- yaffs_block_info_t *blk;
+ struct yaffs_block_info *blk;
blk = dev->block_info;
for (b = dev->internal_start_block; b <= dev->internal_end_block; b++) {
@@ -5465,7 +4990,7 @@ int yaffs_count_free_chunks(yaffs_dev_t *dev)
case YAFFS_BLOCK_STATE_ALLOCATING:
case YAFFS_BLOCK_STATE_COLLECTING:
case YAFFS_BLOCK_STATE_FULL:
- nFree +=
+ n_free +=
(dev->param.chunks_per_block - blk->pages_in_use +
blk->soft_del_pages);
break;
@@ -5474,71 +4999,84 @@ int yaffs_count_free_chunks(yaffs_dev_t *dev)
}
blk++;
}
-
- return nFree;
+ return n_free;
}
-int yaffs_get_n_free_chunks(yaffs_dev_t *dev)
+int yaffs_get_n_free_chunks(struct yaffs_dev *dev)
{
/* This is what we report to the outside world */
-
- int nFree;
- int nDirtyCacheChunks;
- int blocksForCheckpoint;
+ int n_free;
+ int n_dirty_caches;
+ int blocks_for_checkpt;
int i;
-#if 1
- nFree = dev->n_free_chunks;
-#else
- nFree = yaffs_count_free_chunks(dev);
-#endif
-
- nFree += dev->n_deleted_files;
+ n_free = dev->n_free_chunks;
+ n_free += dev->n_deleted_files;
- /* Now count the number of dirty chunks in the cache and subtract those */
+ /* Now count and subtract the number of dirty chunks in the cache. */
- for (nDirtyCacheChunks = 0, i = 0; i < dev->param.n_caches; i++) {
+ for (n_dirty_caches = 0, i = 0; i < dev->param.n_caches; i++) {
if (dev->cache[i].dirty)
- nDirtyCacheChunks++;
+ n_dirty_caches++;
}
- nFree -= nDirtyCacheChunks;
+ n_free -= n_dirty_caches;
- nFree -= ((dev->param.n_reserved_blocks + 1) * dev->param.chunks_per_block);
+ n_free -=
+ ((dev->param.n_reserved_blocks + 1) * dev->param.chunks_per_block);
- /* Now we figure out how much to reserve for the checkpoint and report that... */
- blocksForCheckpoint = yaffs_calc_checkpt_blocks_required(dev);
+ /* Now figure checkpoint space and report that... */
+ blocks_for_checkpt = yaffs_calc_checkpt_blocks_required(dev);
- nFree -= (blocksForCheckpoint * dev->param.chunks_per_block);
+ n_free -= (blocks_for_checkpt * dev->param.chunks_per_block);
+
+ if (n_free < 0)
+ n_free = 0;
+
+ return n_free;
+}
- if (nFree < 0)
- nFree = 0;
- return nFree;
+/*
+ * Marshalling functions to get loff_t file sizes into and out of
+ * object headers.
+ */
+void yaffs_oh_size_load(struct yaffs_obj_hdr *oh, loff_t fsize)
+{
+ oh->file_size_low = (fsize & 0xFFFFFFFF);
+ oh->file_size_high = ((fsize >> 32) & 0xFFFFFFFF);
}
+loff_t yaffs_oh_to_size(struct yaffs_obj_hdr *oh)
+{
+ loff_t retval;
-/*---------------------------------------- YAFFS test code ----------------------*/
+ if (sizeof(loff_t) >= 8 && ~(oh->file_size_high))
+ retval = (((loff_t) oh->file_size_high) << 32) |
+ (((loff_t) oh->file_size_low) & 0xFFFFFFFF);
+ else
+ retval = (loff_t) oh->file_size_low;
+
+ return retval;
+}
-#define yaffs_check_struct(structure, syze, name) \
- do { \
- if (sizeof(structure) != syze) { \
- T(YAFFS_TRACE_ALWAYS, (TSTR("%s should be %d but is %d\n" TENDSTR),\
- name, syze, (int) sizeof(structure))); \
- return YAFFS_FAIL; \
- } \
- } while (0)
-static int yaffs_check_structures(void)
+void yaffs_count_blocks_by_state(struct yaffs_dev *dev, int bs[10])
{
-/* yaffs_check_struct(yaffs_tags_t,8,"yaffs_tags_t"); */
-/* yaffs_check_struct(yaffs_tags_union_t,8,"yaffs_tags_union_t"); */
-/* yaffs_check_struct(yaffs_spare,16,"yaffs_spare"); */
-/* yaffs_check_struct(yaffs_tnode_t, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_tnode_t"); */
+ int i;
+ struct yaffs_block_info *bi;
+ int s;
-#ifndef CONFIG_YAFFS_WINCE
- yaffs_check_struct(yaffs_obj_header, 512, "yaffs_obj_header");
-#endif
- return YAFFS_OK;
+ for(i = 0; i < 10; i++)
+ bs[i] = 0;
+
+ for(i = dev->internal_start_block; i <= dev->internal_end_block; i++) {
+ bi = yaffs_get_block_info(dev, i);
+ s = bi->block_state;
+ if(s > YAFFS_BLOCK_STATE_DEAD || s < YAFFS_BLOCK_STATE_UNKNOWN)
+ bs[0]++;
+ else
+ bs[s]++;
+ }
}
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_guts.h b/target/linux/generic/files/fs/yaffs2/yaffs_guts.h
index 88075a7..0578536 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_guts.h
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_guts.h
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet another Flash File System . A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -17,41 +17,55 @@
#define __YAFFS_GUTS_H__
#include "yportenv.h"
-#include "devextras.h"
-#include "yaffs_list.h"
#define YAFFS_OK 1
#define YAFFS_FAIL 0
/* Give us a Y=0x59,
* Give us an A=0x41,
- * Give us an FF=0xFF
+ * Give us an FF=0xff
* Give us an S=0x53
* And what have we got...
*/
-#define YAFFS_MAGIC 0x5941FF53
+#define YAFFS_MAGIC 0x5941ff53
-#define YAFFS_NTNODES_LEVEL0 16
+/*
+ * Tnodes form a tree with the tnodes in "levels"
+ * Levels greater than 0 hold 8 slots which point to other tnodes.
+ * Those at level 0 hold 16 slots which point to chunks in NAND.
+ *
+ * A maximum level of 8 thust supports files of size up to:
+ *
+ * 2^(3*MAX_LEVEL+4)
+ *
+ * Thus a max level of 8 supports files with up to 2^^28 chunks which gives
+ * a maximum file size of around 512Gbytees with 2k chunks.
+ */
+#define YAFFS_NTNODES_LEVEL0 16
#define YAFFS_TNODES_LEVEL0_BITS 4
#define YAFFS_TNODES_LEVEL0_MASK 0xf
-#define YAFFS_NTNODES_INTERNAL (YAFFS_NTNODES_LEVEL0 / 2)
-#define YAFFS_TNODES_INTERNAL_BITS (YAFFS_TNODES_LEVEL0_BITS - 1)
+#define YAFFS_NTNODES_INTERNAL (YAFFS_NTNODES_LEVEL0 / 2)
+#define YAFFS_TNODES_INTERNAL_BITS (YAFFS_TNODES_LEVEL0_BITS - 1)
#define YAFFS_TNODES_INTERNAL_MASK 0x7
-#define YAFFS_TNODES_MAX_LEVEL 6
+#define YAFFS_TNODES_MAX_LEVEL 8
+#define YAFFS_TNODES_MAX_BITS (YAFFS_TNODES_LEVEL0_BITS + \
+ YAFFS_TNODES_INTERNAL_BITS * \
+ YAFFS_TNODES_MAX_LEVEL)
+#define YAFFS_MAX_CHUNK_ID ((1 << YAFFS_TNODES_MAX_BITS) - 1)
+
+#define YAFFS_MAX_FILE_SIZE_32 0x7fffffff
-#ifndef CONFIG_YAFFS_NO_YAFFS1
+/* Constants for YAFFS1 mode */
#define YAFFS_BYTES_PER_SPARE 16
#define YAFFS_BYTES_PER_CHUNK 512
#define YAFFS_CHUNK_SIZE_SHIFT 9
#define YAFFS_CHUNKS_PER_BLOCK 32
-#define YAFFS_BYTES_PER_BLOCK (YAFFS_CHUNKS_PER_BLOCK*YAFFS_BYTES_PER_CHUNK)
-#endif
+#define YAFFS_BYTES_PER_BLOCK (YAFFS_CHUNKS_PER_BLOCK*YAFFS_BYTES_PER_CHUNK)
-#define YAFFS_MIN_YAFFS2_CHUNK_SIZE 1024
+#define YAFFS_MIN_YAFFS2_CHUNK_SIZE 1024
#define YAFFS_MIN_YAFFS2_SPARE_SIZE 32
-#define YAFFS_MAX_CHUNK_ID 0x000FFFFF
#define YAFFS_ALLOCATION_NOBJECTS 100
@@ -60,11 +74,12 @@
#define YAFFS_NOBJECT_BUCKETS 256
-
#define YAFFS_OBJECT_SPACE 0x40000
-#define YAFFS_MAX_OBJECT_ID (YAFFS_OBJECT_SPACE -1)
+#define YAFFS_MAX_OBJECT_ID (YAFFS_OBJECT_SPACE - 1)
-#define YAFFS_CHECKPOINT_VERSION 4
+/* Binary data version stamps */
+#define YAFFS_SUMMARY_VERSION 1
+#define YAFFS_CHECKPOINT_VERSION 7
#ifdef CONFIG_YAFFS_UNICODE
#define YAFFS_MAX_NAME_LENGTH 127
@@ -82,11 +97,12 @@
#define YAFFS_OBJECTID_UNLINKED 3
#define YAFFS_OBJECTID_DELETED 4
+/* Fake object Id for summary data */
+#define YAFFS_OBJECTID_SUMMARY 0x10
+
/* Pseudo object ids for checkpointing */
-#define YAFFS_OBJECTID_SB_HEADER 0x10
#define YAFFS_OBJECTID_CHECKPOINT_DATA 0x20
-#define YAFFS_SEQUENCE_CHECKPOINT_DATA 0x21
-
+#define YAFFS_SEQUENCE_CHECKPOINT_DATA 0x21
#define YAFFS_MAX_SHORT_OP_CACHES 20
@@ -102,80 +118,74 @@
* The range is limited slightly to help distinguish bad numbers from good.
* This also allows us to perhaps in the future use special numbers for
* special purposes.
- * EFFFFF00 allows the allocation of 8 blocks per second (~1Mbytes) for 15 years,
+ * EFFFFF00 allows the allocation of 8 blocks/second (~1Mbytes) for 15 years,
* and is a larger number than the lifetime of a 2GB device.
*/
#define YAFFS_LOWEST_SEQUENCE_NUMBER 0x00001000
-#define YAFFS_HIGHEST_SEQUENCE_NUMBER 0xEFFFFF00
+#define YAFFS_HIGHEST_SEQUENCE_NUMBER 0xefffff00
/* Special sequence number for bad block that failed to be marked bad */
-#define YAFFS_SEQUENCE_BAD_BLOCK 0xFFFF0000
+#define YAFFS_SEQUENCE_BAD_BLOCK 0xffff0000
/* ChunkCache is used for short read/write operations.*/
-typedef struct {
- struct yaffs_obj_s *object;
+struct yaffs_cache {
+ struct yaffs_obj *object;
int chunk_id;
int last_use;
int dirty;
int n_bytes; /* Only valid if the cache is dirty */
int locked; /* Can't push out or flush while locked. */
- __u8 *data;
-} yaffs_cache_t;
-
-
+ u8 *data;
+};
-/* Tags structures in RAM
- * NB This uses bitfield. Bitfields should not straddle a u32 boundary otherwise
- * the structure size will get blown out.
+/* yaffs1 tags structures in RAM
+ * NB This uses bitfield. Bitfields should not straddle a u32 boundary
+ * otherwise the structure size will get blown out.
*/
-#ifndef CONFIG_YAFFS_NO_YAFFS1
-typedef struct {
+struct yaffs_tags {
unsigned chunk_id:20;
unsigned serial_number:2;
unsigned n_bytes_lsb:10;
unsigned obj_id:18;
unsigned ecc:12;
unsigned n_bytes_msb:2;
-} yaffs_tags_t;
+};
-typedef union {
- yaffs_tags_t as_tags;
- __u8 as_bytes[8];
-} yaffs_tags_union_t;
+union yaffs_tags_union {
+ struct yaffs_tags as_tags;
+ u8 as_bytes[8];
+};
-#endif
/* Stuff used for extended tags in YAFFS2 */
-typedef enum {
+enum yaffs_ecc_result {
YAFFS_ECC_RESULT_UNKNOWN,
YAFFS_ECC_RESULT_NO_ERROR,
YAFFS_ECC_RESULT_FIXED,
YAFFS_ECC_RESULT_UNFIXED
-} yaffs_ecc_result;
+};
-typedef enum {
+enum yaffs_obj_type {
YAFFS_OBJECT_TYPE_UNKNOWN,
YAFFS_OBJECT_TYPE_FILE,
YAFFS_OBJECT_TYPE_SYMLINK,
YAFFS_OBJECT_TYPE_DIRECTORY,
YAFFS_OBJECT_TYPE_HARDLINK,
YAFFS_OBJECT_TYPE_SPECIAL
-} yaffs_obj_type;
+};
#define YAFFS_OBJECT_TYPE_MAX YAFFS_OBJECT_TYPE_SPECIAL
-typedef struct {
-
- unsigned validity1;
+struct yaffs_ext_tags {
unsigned chunk_used; /* Status of the chunk: used or unused */
- unsigned obj_id; /* If 0 then this is not part of an object (unused) */
- unsigned chunk_id; /* If 0 then this is a header, else a data chunk */
+ unsigned obj_id; /* If 0 this is not used */
+ unsigned chunk_id; /* If 0 this is a header, else a data chunk */
unsigned n_bytes; /* Only valid for data chunks */
/* The following stuff only has meaning when we read */
- yaffs_ecc_result ecc_result;
+ enum yaffs_ecc_result ecc_result;
unsigned block_bad;
/* YAFFS 1 stuff */
@@ -187,57 +197,57 @@ typedef struct {
/* Extra info if this is an object header (YAFFS2 only) */
- unsigned extra_available; /* There is extra info available if this is not zero */
+ unsigned extra_available; /* Extra info available if not zero */
unsigned extra_parent_id; /* The parent object */
unsigned extra_is_shrink; /* Is it a shrink header? */
- unsigned extra_shadows; /* Does this shadow another object? */
-
- yaffs_obj_type extra_obj_type; /* What object type? */
-
- unsigned extra_length; /* Length if it is a file */
- unsigned extra_equiv_id; /* Equivalent object Id if it is a hard link */
+ unsigned extra_shadows; /* Does this shadow another object? */
- unsigned validty1;
+ enum yaffs_obj_type extra_obj_type; /* What object type? */
-} yaffs_ext_tags;
+ loff_t extra_file_size; /* Length if it is a file */
+ unsigned extra_equiv_id; /* Equivalent object for a hard link */
+};
/* Spare structure for YAFFS1 */
-typedef struct {
- __u8 tb0;
- __u8 tb1;
- __u8 tb2;
- __u8 tb3;
- __u8 page_status; /* set to 0 to delete the chunk */
- __u8 block_status;
- __u8 tb4;
- __u8 tb5;
- __u8 ecc1[3];
- __u8 tb6;
- __u8 tb7;
- __u8 ecc2[3];
-} yaffs_spare;
+struct yaffs_spare {
+ u8 tb0;
+ u8 tb1;
+ u8 tb2;
+ u8 tb3;
+ u8 page_status; /* set to 0 to delete the chunk */
+ u8 block_status;
+ u8 tb4;
+ u8 tb5;
+ u8 ecc1[3];
+ u8 tb6;
+ u8 tb7;
+ u8 ecc2[3];
+};
/*Special structure for passing through to mtd */
struct yaffs_nand_spare {
- yaffs_spare spare;
+ struct yaffs_spare spare;
int eccres1;
int eccres2;
};
/* Block data in RAM */
-typedef enum {
+enum yaffs_block_state {
YAFFS_BLOCK_STATE_UNKNOWN = 0,
YAFFS_BLOCK_STATE_SCANNING,
- /* Being scanned */
-
- YAFFS_BLOCK_STATE_NEEDS_SCANNING,
- /* The block might have something on it (ie it is allocating or full, perhaps empty)
- * but it needs to be scanned to determine its true state.
- * This state is only valid during yaffs_Scan.
- * NB We tolerate empty because the pre-scanner might be incapable of deciding
- * However, if this state is returned on a YAFFS2 device, then we expect a sequence number
+ /* Being scanned */
+
+ YAFFS_BLOCK_STATE_NEEDS_SCAN,
+ /* The block might have something on it (ie it is allocating or full,
+ * perhaps empty) but it needs to be scanned to determine its true
+ * state.
+ * This state is only valid during scanning.
+ * NB We tolerate empty because the pre-scanner might be incapable of
+ * deciding
+ * However, if this state is returned on a YAFFS2 device,
+ * then we expect a sequence number
*/
YAFFS_BLOCK_STATE_EMPTY,
@@ -248,13 +258,14 @@ typedef enum {
* At least one page holds valid data.
* This is the one currently being used for page
* allocation. Should never be more than one of these.
- * If a block is only partially allocated at mount it is treated as full.
+ * If a block is only partially allocated at mount it is treated as
+ * full.
*/
YAFFS_BLOCK_STATE_FULL,
/* All the pages in this block have been allocated.
- * If a block was only partially allocated when mounted we treat
- * it as fully allocated.
+ * If a block was only partially allocated when mounted we treat
+ * it as fully allocated.
*/
YAFFS_BLOCK_STATE_DIRTY,
@@ -269,57 +280,54 @@ typedef enum {
/* This block is being garbage collected */
YAFFS_BLOCK_STATE_DEAD
- /* This block has failed and is not in use */
-} yaffs_block_state_t;
+ /* This block has failed and is not in use */
+};
#define YAFFS_NUMBER_OF_BLOCK_STATES (YAFFS_BLOCK_STATE_DEAD + 1)
-
-typedef struct {
+struct yaffs_block_info {
int soft_del_pages:10; /* number of soft deleted pages */
int pages_in_use:10; /* number of pages in use */
- unsigned block_state:4; /* One of the above block states. NB use unsigned because enum is sometimes an int */
- __u32 needs_retiring:1; /* Data has failed on this block, need to get valid data off */
- /* and retire the block. */
- __u32 skip_erased_check:1; /* If this is set we can skip the erased check on this block */
- __u32 gc_prioritise:1; /* An ECC check or blank check has failed on this block.
- It should be prioritised for GC */
- __u32 chunk_error_strikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */
-
-#ifdef CONFIG_YAFFS_YAFFS2
- __u32 has_shrink_hdr:1; /* This block has at least one shrink object header */
- __u32 seq_number; /* block sequence number for yaffs2 */
-#endif
+ unsigned block_state:4; /* One of the above block states. */
+ /* NB use unsigned because enum is sometimes
+ * an int */
+ u32 needs_retiring:1; /* Data has failed on this block, */
+ /*need to get valid data off and retire*/
+ u32 skip_erased_check:1;/* Skip the erased check on this block */
+ u32 gc_prioritise:1; /* An ECC check or blank check has failed.
+ Block should be prioritised for GC */
+ u32 chunk_error_strikes:3; /* How many times we've had ecc etc
+ failures on this block and tried to reuse it */
+ u32 has_summary:1; /* The block has a summary */
+
+ u32 has_shrink_hdr:1; /* This block has at least one shrink header */
+ u32 seq_number; /* block sequence number for yaffs2 */
-} yaffs_block_info_t;
+};
/* -------------------------- Object structure -------------------------------*/
/* This is the object structure as stored on NAND */
-typedef struct {
- yaffs_obj_type type;
+struct yaffs_obj_hdr {
+ enum yaffs_obj_type type;
/* Apply to everything */
int parent_obj_id;
- __u16 sum_no_longer_used; /* checksum of name. No longer used */
+ u16 sum_no_longer_used; /* checksum of name. No longer used */
YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
- /* The following apply to directories, files, symlinks - not hard links */
- __u32 yst_mode; /* protection */
+ /* The following apply to all object types except for hard links */
+ u32 yst_mode; /* protection */
-#ifdef CONFIG_YAFFS_WINCE
- __u32 not_for_wince[5];
-#else
- __u32 yst_uid;
- __u32 yst_gid;
- __u32 yst_atime;
- __u32 yst_mtime;
- __u32 yst_ctime;
-#endif
+ u32 yst_uid;
+ u32 yst_gid;
+ u32 yst_atime;
+ u32 yst_mtime;
+ u32 yst_ctime;
/* File size applies to files only */
- int file_size;
+ u32 file_size_low;
/* Equivalent object id applies to hard links only. */
int equiv_id;
@@ -327,37 +335,31 @@ typedef struct {
/* Alias is for symlinks only. */
YCHAR alias[YAFFS_MAX_ALIAS_LENGTH + 1];
- __u32 yst_rdev; /* device stuff for block and char devices (major/min) */
+ u32 yst_rdev; /* stuff for block and char devices (major/min) */
-#ifdef CONFIG_YAFFS_WINCE
- __u32 win_ctime[2];
- __u32 win_atime[2];
- __u32 win_mtime[2];
-#else
- __u32 room_to_grow[6];
+ u32 win_ctime[2];
+ u32 win_atime[2];
+ u32 win_mtime[2];
-#endif
- __u32 inband_shadowed_obj_id;
- __u32 inband_is_shrink;
+ u32 inband_shadowed_obj_id;
+ u32 inband_is_shrink;
- __u32 reserved[2];
- int shadows_obj; /* This object header shadows the specified object if > 0 */
+ u32 file_size_high;
+ u32 reserved[1];
+ int shadows_obj; /* This object header shadows the
+ specified object if > 0 */
- /* is_shrink applies to object headers written when we shrink the file (ie resize) */
- __u32 is_shrink;
+ /* is_shrink applies to object headers written when wemake a hole. */
+ u32 is_shrink;
-} yaffs_obj_header;
+};
/*--------------------------- Tnode -------------------------- */
-union yaffs_tnode_union {
- union yaffs_tnode_union *internal[YAFFS_NTNODES_INTERNAL];
-
+struct yaffs_tnode {
+ struct yaffs_tnode *internal[YAFFS_NTNODES_INTERNAL];
};
-typedef union yaffs_tnode_union yaffs_tnode_t;
-
-
/*------------------------ Object -----------------------------*/
/* An object can be one of:
* - a directory (no data, has children links
@@ -366,294 +368,310 @@ typedef union yaffs_tnode_union yaffs_tnode_t;
* - a hard link
*/
-typedef struct {
- __u32 file_size;
- __u32 scanned_size;
- __u32 shrink_size;
+struct yaffs_file_var {
+ loff_t file_size;
+ loff_t scanned_size;
+ loff_t shrink_size;
int top_level;
- yaffs_tnode_t *top;
-} yaffs_file_s;
+ struct yaffs_tnode *top;
+};
-typedef struct {
- struct ylist_head children; /* list of child links */
- struct ylist_head dirty; /* Entry for list of dirty directories */
-} yaffs_dir_s;
+struct yaffs_dir_var {
+ struct list_head children; /* list of child links */
+ struct list_head dirty; /* Entry for list of dirty directories */
+};
-typedef struct {
+struct yaffs_symlink_var {
YCHAR *alias;
-} yaffs_symlink_t;
-
-typedef struct {
- struct yaffs_obj_s *equiv_obj;
- __u32 equiv_id;
-} yaffs_hard_link_s;
-
-typedef union {
- yaffs_file_s file_variant;
- yaffs_dir_s dir_variant;
- yaffs_symlink_t symlink_variant;
- yaffs_hard_link_s hardlink_variant;
-} yaffs_obj_variant;
-
-
-
-struct yaffs_obj_s {
- __u8 deleted:1; /* This should only apply to unlinked files. */
- __u8 soft_del:1; /* it has also been soft deleted */
- __u8 unlinked:1; /* An unlinked file. The file should be in the unlinked directory.*/
- __u8 fake:1; /* A fake object has no presence on NAND. */
- __u8 rename_allowed:1; /* Some objects are not allowed to be renamed. */
- __u8 unlink_allowed:1;
- __u8 dirty:1; /* the object needs to be written to flash */
- __u8 valid:1; /* When the file system is being loaded up, this
+};
+
+struct yaffs_hardlink_var {
+ struct yaffs_obj *equiv_obj;
+ u32 equiv_id;
+};
+
+union yaffs_obj_var {
+ struct yaffs_file_var file_variant;
+ struct yaffs_dir_var dir_variant;
+ struct yaffs_symlink_var symlink_variant;
+ struct yaffs_hardlink_var hardlink_variant;
+};
+
+struct yaffs_obj {
+ u8 deleted:1; /* This should only apply to unlinked files. */
+ u8 soft_del:1; /* it has also been soft deleted */
+ u8 unlinked:1; /* An unlinked file.*/
+ u8 fake:1; /* A fake object has no presence on NAND. */
+ u8 rename_allowed:1; /* Some objects cannot be renamed. */
+ u8 unlink_allowed:1;
+ u8 dirty:1; /* the object needs to be written to flash */
+ u8 valid:1; /* When the file system is being loaded up, this
* object might be created before the data
- * is available (ie. file data records appear before the header).
+ * is available
+ * ie. file data chunks encountered before
+ * the header.
*/
- __u8 lazy_loaded:1; /* This object has been lazy loaded and is missing some detail */
+ u8 lazy_loaded:1; /* This object has been lazy loaded and
+ * is missing some detail */
- __u8 defered_free:1; /* For Linux kernel. Object is removed from NAND, but is
- * still in the inode cache. Free of object is defered.
+ u8 defered_free:1; /* Object is removed from NAND, but is
+ * still in the inode cache.
+ * Free of object is defered.
* until the inode is released.
*/
- __u8 being_created:1; /* This object is still being created so skip some checks. */
- __u8 is_shadowed:1; /* This object is shadowed on the way to being renamed. */
+ u8 being_created:1; /* This object is still being created
+ * so skip some verification checks. */
+ u8 is_shadowed:1; /* This object is shadowed on the way
+ * to being renamed. */
- __u8 xattr_known:1; /* We know if this has object has xattribs or not. */
- __u8 has_xattr:1; /* This object has xattribs. Valid if xattr_known. */
+ u8 xattr_known:1; /* We know if this has object has xattribs
+ * or not. */
+ u8 has_xattr:1; /* This object has xattribs.
+ * Only valid if xattr_known. */
- __u8 serial; /* serial number of chunk in NAND. Cached here */
- __u16 sum; /* sum of the name to speed searching */
+ u8 serial; /* serial number of chunk in NAND.*/
+ u16 sum; /* sum of the name to speed searching */
- struct yaffs_dev_s *my_dev; /* The device I'm on */
+ struct yaffs_dev *my_dev; /* The device I'm on */
- struct ylist_head hash_link; /* list of objects in this hash bucket */
+ struct list_head hash_link; /* list of objects in hash bucket */
- struct ylist_head hard_links; /* all the equivalent hard linked objects */
+ struct list_head hard_links; /* hard linked object chain*/
/* directory structure stuff */
/* also used for linking up the free list */
- struct yaffs_obj_s *parent;
- struct ylist_head siblings;
+ struct yaffs_obj *parent;
+ struct list_head siblings;
/* Where's my object header in NAND? */
int hdr_chunk;
- int n_data_chunks; /* Number of data chunks attached to the file. */
+ int n_data_chunks; /* Number of data chunks for this file. */
- __u32 obj_id; /* the object id value */
+ u32 obj_id; /* the object id value */
- __u32 yst_mode;
+ u32 yst_mode;
-#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
YCHAR short_name[YAFFS_SHORT_NAME_LENGTH + 1];
-#endif
#ifdef CONFIG_YAFFS_WINCE
- __u32 win_ctime[2];
- __u32 win_mtime[2];
- __u32 win_atime[2];
+ u32 win_ctime[2];
+ u32 win_mtime[2];
+ u32 win_atime[2];
#else
- __u32 yst_uid;
- __u32 yst_gid;
- __u32 yst_atime;
- __u32 yst_mtime;
- __u32 yst_ctime;
+ u32 yst_uid;
+ u32 yst_gid;
+ u32 yst_atime;
+ u32 yst_mtime;
+ u32 yst_ctime;
#endif
- __u32 yst_rdev;
+ u32 yst_rdev;
void *my_inode;
- yaffs_obj_type variant_type;
+ enum yaffs_obj_type variant_type;
- yaffs_obj_variant variant;
+ union yaffs_obj_var variant;
};
-typedef struct yaffs_obj_s yaffs_obj_t;
-
-typedef struct {
- struct ylist_head list;
+struct yaffs_obj_bucket {
+ struct list_head list;
int count;
-} yaffs_obj_bucket;
-
+};
-/* yaffs_checkpt_obj_t holds the definition of an object as dumped
+/* yaffs_checkpt_obj holds the definition of an object as dumped
* by checkpointing.
*/
-typedef struct {
+struct yaffs_checkpt_obj {
int struct_type;
- __u32 obj_id;
- __u32 parent_id;
+ u32 obj_id;
+ u32 parent_id;
int hdr_chunk;
- yaffs_obj_type variant_type:3;
- __u8 deleted:1;
- __u8 soft_del:1;
- __u8 unlinked:1;
- __u8 fake:1;
- __u8 rename_allowed:1;
- __u8 unlink_allowed:1;
- __u8 serial;
-
+ enum yaffs_obj_type variant_type:3;
+ u8 deleted:1;
+ u8 soft_del:1;
+ u8 unlinked:1;
+ u8 fake:1;
+ u8 rename_allowed:1;
+ u8 unlink_allowed:1;
+ u8 serial;
int n_data_chunks;
- __u32 size_or_equiv_obj;
-} yaffs_checkpt_obj_t;
+ loff_t size_or_equiv_obj;
+};
/*--------------------- Temporary buffers ----------------
*
- * These are chunk-sized working buffers. Each device has a few
+ * These are chunk-sized working buffers. Each device has a few.
*/
-typedef struct {
- __u8 *buffer;
- int line; /* track from whence this buffer was allocated */
- int max_line;
-} yaffs_buffer_t;
+struct yaffs_buffer {
+ u8 *buffer;
+ int in_use;
+};
/*----------------- Device ---------------------------------*/
-
-struct yaffs_param_s {
+struct yaffs_param {
const YCHAR *name;
/*
- * Entry parameters set up way early. Yaffs sets up the rest.
- * The structure should be zeroed out before use so that unused
- * and defualt values are zero.
- */
+ * Entry parameters set up way early. Yaffs sets up the rest.
+ * The structure should be zeroed out before use so that unused
+ * and default values are zero.
+ */
- int inband_tags; /* Use unband tags */
- __u32 total_bytes_per_chunk; /* Should be >= 512, does not need to be a power of 2 */
+ int inband_tags; /* Use unband tags */
+ u32 total_bytes_per_chunk; /* Should be >= 512, does not need to
+ be a power of 2 */
int chunks_per_block; /* does not need to be a power of 2 */
int spare_bytes_per_chunk; /* spare area size */
- int start_block; /* Start block we're allowed to use */
+ int start_block; /* Start block we're allowed to use */
int end_block; /* End block we're allowed to use */
- int n_reserved_blocks; /* We want this tuneable so that we can reduce */
- /* reserved blocks on NOR and RAM. */
-
+ int n_reserved_blocks; /* Tuneable so that we can reduce
+ * reserved blocks on NOR and RAM. */
- int n_caches; /* If <= 0, then short op caching is disabled, else
- * the number of short op caches (don't use too many).
- * 10 to 20 is a good bet.
+ int n_caches; /* If <= 0, then short op caching is disabled,
+ * else the number of short op caches.
*/
- int use_nand_ecc; /* Flag to decide whether or not to use NANDECC on data (yaffs1) */
- int no_tags_ecc; /* Flag to decide whether or not to do ECC on packed tags (yaffs2) */
+ int cache_bypass_aligned; /* If non-zero then bypass the cache for
+ * aligned writes.
+ */
- int is_yaffs2; /* Use yaffs2 mode on this device */
+ int use_nand_ecc; /* Flag to decide whether or not to use
+ * NAND driver ECC on data (yaffs1) */
+ int tags_9bytes; /* Use 9 byte tags */
+ int no_tags_ecc; /* Flag to decide whether or not to do ECC
+ * on packed tags (yaffs2) */
- int empty_lost_n_found; /* Auto-empty lost+found directory on mount */
+ int is_yaffs2; /* Use yaffs2 mode on this device */
- int refresh_period; /* How often we should check to do a block refresh */
+ int empty_lost_n_found; /* Auto-empty lost+found directory on mount */
+
+ int refresh_period; /* How often to check for a block refresh */
/* Checkpoint control. Can be set before or after initialisation */
- __u8 skip_checkpt_rd;
- __u8 skip_checkpt_wr;
+ u8 skip_checkpt_rd;
+ u8 skip_checkpt_wr;
int enable_xattr; /* Enable xattribs */
- /* NAND access functions (Must be set before calling YAFFS)*/
-
- int (*write_chunk_fn) (struct yaffs_dev_s *dev,
- int nand_chunk, const __u8 *data,
- const yaffs_spare *spare);
- int (*read_chunk_fn) (struct yaffs_dev_s *dev,
- int nand_chunk, __u8 *data,
- yaffs_spare *spare);
- int (*erase_fn) (struct yaffs_dev_s *dev,
- int flash_block);
- int (*initialise_flash_fn) (struct yaffs_dev_s *dev);
- int (*deinitialise_flash_fn) (struct yaffs_dev_s *dev);
-
-#ifdef CONFIG_YAFFS_YAFFS2
- int (*write_chunk_tags_fn) (struct yaffs_dev_s *dev,
- int nand_chunk, const __u8 *data,
- const yaffs_ext_tags *tags);
- int (*read_chunk_tags_fn) (struct yaffs_dev_s *dev,
- int nand_chunk, __u8 *data,
- yaffs_ext_tags *tags);
- int (*bad_block_fn) (struct yaffs_dev_s *dev, int block_no);
- int (*query_block_fn) (struct yaffs_dev_s *dev, int block_no,
- yaffs_block_state_t *state, __u32 *seq_number);
-#endif
+ int max_objects; /*
+ * Set to limit the number of objects created.
+ * 0 = no limit.
+ */
/* The remove_obj_fn function must be supplied by OS flavours that
* need it.
- * yaffs direct uses it to implement the faster readdir.
- * Linux uses it to protect the directory during unlocking.
+ * yaffs direct uses it to implement the faster readdir.
+ * Linux uses it to protect the directory during unlocking.
*/
- void (*remove_obj_fn)(struct yaffs_obj_s *obj);
+ void (*remove_obj_fn) (struct yaffs_obj *obj);
/* Callback to mark the superblock dirty */
- void (*sb_dirty_fn)(struct yaffs_dev_s *dev);
-
+ void (*sb_dirty_fn) (struct yaffs_dev *dev);
+
/* Callback to control garbage collection. */
- unsigned (*gc_control)(struct yaffs_dev_s *dev);
+ unsigned (*gc_control_fn) (struct yaffs_dev *dev);
- /* Debug control flags. Don't use unless you know what you're doing */
- int use_header_file_size; /* Flag to determine if we should use file sizes from the header */
+ /* Debug control flags. Don't use unless you know what you're doing */
+ int use_header_file_size; /* Flag to determine if we should use
+ * file sizes from the header */
int disable_lazy_load; /* Disable lazy loading on this device */
- int wide_tnodes_disabled; /* Set to disable wide tnodes */
- int disable_soft_del; /* yaffs 1 only: Set to disable the use of softdeletion. */
-
- int defered_dir_update; /* Set to defer directory updates */
+ int wide_tnodes_disabled; /* Set to disable wide tnodes */
+ int disable_soft_del; /* yaffs 1 only: Set to disable the use of
+ * softdeletion. */
+
+ int defered_dir_update; /* Set to defer directory updates */
#ifdef CONFIG_YAFFS_AUTO_UNICODE
int auto_unicode;
#endif
- int always_check_erased; /* Force chunk erased check always on */
+ int always_check_erased; /* Force chunk erased check always on */
+
+ int disable_summary;
+ int disable_bad_block_marking;
+
};
-typedef struct yaffs_param_s yaffs_param_t;
+struct yaffs_driver {
+ int (*drv_write_chunk_fn) (struct yaffs_dev *dev, int nand_chunk,
+ const u8 *data, int data_len,
+ const u8 *oob, int oob_len);
+ int (*drv_read_chunk_fn) (struct yaffs_dev *dev, int nand_chunk,
+ u8 *data, int data_len,
+ u8 *oob, int oob_len,
+ enum yaffs_ecc_result *ecc_result);
+ int (*drv_erase_fn) (struct yaffs_dev *dev, int block_no);
+ int (*drv_mark_bad_fn) (struct yaffs_dev *dev, int block_no);
+ int (*drv_check_bad_fn) (struct yaffs_dev *dev, int block_no);
+ int (*drv_initialise_fn) (struct yaffs_dev *dev);
+ int (*drv_deinitialise_fn) (struct yaffs_dev *dev);
+};
+
+struct yaffs_tags_handler {
+ int (*write_chunk_tags_fn) (struct yaffs_dev *dev,
+ int nand_chunk, const u8 *data,
+ const struct yaffs_ext_tags *tags);
+ int (*read_chunk_tags_fn) (struct yaffs_dev *dev,
+ int nand_chunk, u8 *data,
+ struct yaffs_ext_tags *tags);
+
+ int (*query_block_fn) (struct yaffs_dev *dev, int block_no,
+ enum yaffs_block_state *state,
+ u32 *seq_number);
+ int (*mark_bad_fn) (struct yaffs_dev *dev, int block_no);
+};
-struct yaffs_dev_s {
- struct yaffs_param_s param;
+struct yaffs_dev {
+ struct yaffs_param param;
+ struct yaffs_driver drv;
+ struct yaffs_tags_handler tagger;
- /* Context storage. Holds extra OS specific data for this device */
+ /* Context storage. Holds extra OS specific data for this device */
void *os_context;
void *driver_context;
- struct ylist_head dev_list;
+ struct list_head dev_list;
+ int ll_init;
/* Runtime parameters. Set up by YAFFS. */
- int data_bytes_per_chunk;
+ int data_bytes_per_chunk;
- /* Non-wide tnode stuff */
- __u16 chunk_grp_bits; /* Number of bits that need to be resolved if
- * the tnodes are not wide enough.
- */
- __u16 chunk_grp_size; /* == 2^^chunk_grp_bits */
+ /* Non-wide tnode stuff */
+ u16 chunk_grp_bits; /* Number of bits that need to be resolved if
+ * the tnodes are not wide enough.
+ */
+ u16 chunk_grp_size; /* == 2^^chunk_grp_bits */
/* Stuff to support wide tnodes */
- __u32 tnode_width;
- __u32 tnode_mask;
- __u32 tnode_size;
+ u32 tnode_width;
+ u32 tnode_mask;
+ u32 tnode_size;
/* Stuff for figuring out file offset to chunk conversions */
- __u32 chunk_shift; /* Shift value */
- __u32 chunk_div; /* Divisor after shifting: 1 for power-of-2 sizes */
- __u32 chunk_mask; /* Mask to use for power-of-2 case */
-
-
+ u32 chunk_shift; /* Shift value */
+ u32 chunk_div; /* Divisor after shifting: 1 for 2^n sizes */
+ u32 chunk_mask; /* Mask to use for power-of-2 case */
int is_mounted;
int read_only;
int is_checkpointed;
-
/* Stuff to support block offsetting to support start block zero */
int internal_start_block;
int internal_end_block;
int block_offset;
int chunk_offset;
-
/* Runtime checkpointing stuff */
- int checkpt_page_seq; /* running sequence number of checkpoint pages */
+ int checkpt_page_seq; /* running sequence number of checkpt pages */
int checkpt_byte_count;
int checkpt_byte_offs;
- __u8 *checkpt_buffer;
+ u8 *checkpt_buffer;
int checkpt_open_write;
int blocks_in_checkpt;
int checkpt_cur_chunk;
@@ -661,23 +679,24 @@ struct yaffs_dev_s {
int checkpt_next_block;
int *checkpt_block_list;
int checkpt_max_blocks;
- __u32 checkpt_sum;
- __u32 checkpt_xor;
+ u32 checkpt_sum;
+ u32 checkpt_xor;
- int checkpoint_blocks_required; /* Number of blocks needed to store current checkpoint set */
+ int checkpoint_blocks_required; /* Number of blocks needed to store
+ * current checkpoint set */
/* Block Info */
- yaffs_block_info_t *block_info;
- __u8 *chunk_bits; /* bitmap of chunks in use */
- unsigned block_info_alt:1; /* was allocated using alternative strategy */
- unsigned chunk_bits_alt:1; /* was allocated using alternative strategy */
+ struct yaffs_block_info *block_info;
+ u8 *chunk_bits; /* bitmap of chunks in use */
+ unsigned block_info_alt:1; /* allocated using alternative alloc */
+ unsigned chunk_bits_alt:1; /* allocated using alternative alloc */
int chunk_bit_stride; /* Number of bytes of chunk_bits per block.
* Must be consistent with chunks_per_block.
*/
int n_erased_blocks;
int alloc_block; /* Current block being allocated off */
- __u32 alloc_page;
+ u32 alloc_page;
int alloc_block_finder; /* Used to search for next allocation block */
/* Object and Tnode memory management */
@@ -687,16 +706,17 @@ struct yaffs_dev_s {
int n_hardlinks;
- yaffs_obj_bucket obj_bucket[YAFFS_NOBJECT_BUCKETS];
- __u32 bucket_finder;
+ struct yaffs_obj_bucket obj_bucket[YAFFS_NOBJECT_BUCKETS];
+ u32 bucket_finder;
int n_free_chunks;
/* Garbage collection control */
- __u32 *gc_cleanup_list; /* objects to delete at the end of a GC. */
- __u32 n_clean_ups;
+ u32 *gc_cleanup_list; /* objects to delete at the end of a GC. */
+ u32 n_clean_ups;
- unsigned has_pending_prioritised_gc; /* We think this device might have pending prioritised gcs */
+ unsigned has_pending_prioritised_gc; /* We think this device might
+ have pending prioritised gcs */
unsigned gc_disable;
unsigned gc_block_finder;
unsigned gc_dirtiest;
@@ -705,265 +725,279 @@ struct yaffs_dev_s {
unsigned gc_block;
unsigned gc_chunk;
unsigned gc_skip;
+ struct yaffs_summary_tags *gc_sum_tags;
/* Special directories */
- yaffs_obj_t *root_dir;
- yaffs_obj_t *lost_n_found;
-
- /* Buffer areas for storing data to recover from write failures TODO
- * __u8 buffered_data[YAFFS_CHUNKS_PER_BLOCK][YAFFS_BYTES_PER_CHUNK];
- * yaffs_spare buffered_spare[YAFFS_CHUNKS_PER_BLOCK];
- */
+ struct yaffs_obj *root_dir;
+ struct yaffs_obj *lost_n_found;
int buffered_block; /* Which block is buffered here? */
int doing_buffered_block_rewrite;
- yaffs_cache_t *cache;
+ struct yaffs_cache *cache;
int cache_last_use;
- /* Stuff for background deletion and unlinked files.*/
- yaffs_obj_t *unlinked_dir; /* Directory where unlinked and deleted files live. */
- yaffs_obj_t *del_dir; /* Directory where deleted objects are sent to disappear. */
- yaffs_obj_t *unlinked_deletion; /* Current file being background deleted.*/
- int n_deleted_files; /* Count of files awaiting deletion;*/
- int n_unlinked_files; /* Count of unlinked files. */
+ /* Stuff for background deletion and unlinked files. */
+ struct yaffs_obj *unlinked_dir; /* Directory where unlinked and deleted
+ files live. */
+ struct yaffs_obj *del_dir; /* Directory where deleted objects are
+ sent to disappear. */
+ struct yaffs_obj *unlinked_deletion; /* Current file being
+ background deleted. */
+ int n_deleted_files; /* Count of files awaiting deletion; */
+ int n_unlinked_files; /* Count of unlinked files. */
int n_bg_deletions; /* Count of background deletions. */
/* Temporary buffer management */
- yaffs_buffer_t temp_buffer[YAFFS_N_TEMP_BUFFERS];
+ struct yaffs_buffer temp_buffer[YAFFS_N_TEMP_BUFFERS];
int max_temp;
int temp_in_use;
int unmanaged_buffer_allocs;
int unmanaged_buffer_deallocs;
/* yaffs2 runtime stuff */
- unsigned seq_number; /* Sequence number of currently allocating block */
+ unsigned seq_number; /* Sequence number of currently
+ allocating block */
unsigned oldest_dirty_seq;
unsigned oldest_dirty_block;
/* Block refreshing */
- int refresh_skip; /* A skip down counter. Refresh happens when this gets to zero. */
+ int refresh_skip; /* A skip down counter.
+ * Refresh happens when this gets to zero. */
/* Dirty directory handling */
- struct ylist_head dirty_dirs; /* List of dirty directories */
-
-
- /* Statistcs */
- __u32 n_page_writes;
- __u32 n_page_reads;
- __u32 n_erasures;
- __u32 n_erase_failures;
- __u32 n_gc_copies;
- __u32 all_gcs;
- __u32 passive_gc_count;
- __u32 oldest_dirty_gc_count;
- __u32 n_gc_blocks;
- __u32 bg_gcs;
- __u32 n_retired_writes;
- __u32 n_retired_blocks;
- __u32 n_ecc_fixed;
- __u32 n_ecc_unfixed;
- __u32 n_tags_ecc_fixed;
- __u32 n_tags_ecc_unfixed;
- __u32 n_deletions;
- __u32 n_unmarked_deletions;
- __u32 refresh_count;
- __u32 cache_hits;
+ struct list_head dirty_dirs; /* List of dirty directories */
+
+ /* Summary */
+ int chunks_per_summary;
+ struct yaffs_summary_tags *sum_tags;
+
+ /* Statistics */
+ u32 n_page_writes;
+ u32 n_page_reads;
+ u32 n_erasures;
+ u32 n_bad_markings;
+ u32 n_erase_failures;
+ u32 n_gc_copies;
+ u32 all_gcs;
+ u32 passive_gc_count;
+ u32 oldest_dirty_gc_count;
+ u32 n_gc_blocks;
+ u32 bg_gcs;
+ u32 n_retried_writes;
+ u32 n_retired_blocks;
+ u32 n_ecc_fixed;
+ u32 n_ecc_unfixed;
+ u32 n_tags_ecc_fixed;
+ u32 n_tags_ecc_unfixed;
+ u32 n_deletions;
+ u32 n_unmarked_deletions;
+ u32 refresh_count;
+ u32 cache_hits;
+ u32 tags_used;
+ u32 summary_used;
};
-typedef struct yaffs_dev_s yaffs_dev_t;
-
-/* The static layout of block usage etc is stored in the super block header */
-typedef struct {
- int StructType;
- int version;
- int checkpt_start_block;
- int checkpt_end_block;
- int start_block;
- int end_block;
- int rfu[100];
-} yaffs_sb_header;
-
-/* The CheckpointDevice structure holds the device information that changes at runtime and
- * must be preserved over unmount/mount cycles.
+/* The CheckpointDevice structure holds the device information that changes
+ *at runtime and must be preserved over unmount/mount cycles.
*/
-typedef struct {
+struct yaffs_checkpt_dev {
int struct_type;
int n_erased_blocks;
int alloc_block; /* Current block being allocated off */
- __u32 alloc_page;
+ u32 alloc_page;
int n_free_chunks;
- int n_deleted_files; /* Count of files awaiting deletion;*/
- int n_unlinked_files; /* Count of unlinked files. */
+ int n_deleted_files; /* Count of files awaiting deletion; */
+ int n_unlinked_files; /* Count of unlinked files. */
int n_bg_deletions; /* Count of background deletions. */
/* yaffs2 runtime stuff */
- unsigned seq_number; /* Sequence number of currently allocating block */
-
-} yaffs_checkpt_dev_t;
+ unsigned seq_number; /* Sequence number of currently
+ * allocating block */
+};
-typedef struct {
+struct yaffs_checkpt_validity {
int struct_type;
- __u32 magic;
- __u32 version;
- __u32 head;
-} yaffs_checkpt_validty_t;
-
+ u32 magic;
+ u32 version;
+ u32 head;
+};
-struct yaffs_shadow_fixer_s {
+struct yaffs_shadow_fixer {
int obj_id;
int shadowed_id;
- struct yaffs_shadow_fixer_s *next;
+ struct yaffs_shadow_fixer *next;
};
/* Structure for doing xattr modifications */
-typedef struct {
- int set; /* If 0 then this is a deletion */
+struct yaffs_xattr_mod {
+ int set; /* If 0 then this is a deletion */
const YCHAR *name;
const void *data;
int size;
int flags;
int result;
-}yaffs_xattr_mod;
-
+};
/*----------------------- YAFFS Functions -----------------------*/
-int yaffs_guts_initialise(yaffs_dev_t *dev);
-void yaffs_deinitialise(yaffs_dev_t *dev);
-
-int yaffs_get_n_free_chunks(yaffs_dev_t *dev);
+int yaffs_guts_initialise(struct yaffs_dev *dev);
+void yaffs_deinitialise(struct yaffs_dev *dev);
-int yaffs_rename_obj(yaffs_obj_t *old_dir, const YCHAR *old_name,
- yaffs_obj_t *new_dir, const YCHAR *new_name);
+int yaffs_get_n_free_chunks(struct yaffs_dev *dev);
-int yaffs_unlinker(yaffs_obj_t *dir, const YCHAR *name);
-int yaffs_del_obj(yaffs_obj_t *obj);
+int yaffs_rename_obj(struct yaffs_obj *old_dir, const YCHAR * old_name,
+ struct yaffs_obj *new_dir, const YCHAR * new_name);
-int yaffs_get_obj_name(yaffs_obj_t *obj, YCHAR *name, int buffer_size);
-int yaffs_get_obj_length(yaffs_obj_t *obj);
-int yaffs_get_obj_inode(yaffs_obj_t *obj);
-unsigned yaffs_get_obj_type(yaffs_obj_t *obj);
-int yaffs_get_obj_link_count(yaffs_obj_t *obj);
+int yaffs_unlinker(struct yaffs_obj *dir, const YCHAR * name);
+int yaffs_del_obj(struct yaffs_obj *obj);
-int yaffs_set_attribs(yaffs_obj_t *obj, struct iattr *attr);
-int yaffs_get_attribs(yaffs_obj_t *obj, struct iattr *attr);
+int yaffs_get_obj_name(struct yaffs_obj *obj, YCHAR * name, int buffer_size);
+loff_t yaffs_get_obj_length(struct yaffs_obj *obj);
+int yaffs_get_obj_inode(struct yaffs_obj *obj);
+unsigned yaffs_get_obj_type(struct yaffs_obj *obj);
+int yaffs_get_obj_link_count(struct yaffs_obj *obj);
/* File operations */
-int yaffs_file_rd(yaffs_obj_t *obj, __u8 *buffer, loff_t offset,
- int n_bytes);
-int yaffs_wr_file(yaffs_obj_t *obj, const __u8 *buffer, loff_t offset,
- int n_bytes, int write_trhrough);
-int yaffs_resize_file(yaffs_obj_t *obj, loff_t new_size);
+int yaffs_file_rd(struct yaffs_obj *obj, u8 * buffer, loff_t offset,
+ int n_bytes);
+int yaffs_wr_file(struct yaffs_obj *obj, const u8 * buffer, loff_t offset,
+ int n_bytes, int write_trhrough);
+int yaffs_resize_file(struct yaffs_obj *obj, loff_t new_size);
-yaffs_obj_t *yaffs_create_file(yaffs_obj_t *parent, const YCHAR *name,
- __u32 mode, __u32 uid, __u32 gid);
+struct yaffs_obj *yaffs_create_file(struct yaffs_obj *parent,
+ const YCHAR *name, u32 mode, u32 uid,
+ u32 gid);
-int yaffs_flush_file(yaffs_obj_t *obj, int update_time, int data_sync);
+int yaffs_flush_file(struct yaffs_obj *obj, int update_time, int data_sync);
/* Flushing and checkpointing */
-void yaffs_flush_whole_cache(yaffs_dev_t *dev);
+void yaffs_flush_whole_cache(struct yaffs_dev *dev);
-int yaffs_checkpoint_save(yaffs_dev_t *dev);
-int yaffs_checkpoint_restore(yaffs_dev_t *dev);
+int yaffs_checkpoint_save(struct yaffs_dev *dev);
+int yaffs_checkpoint_restore(struct yaffs_dev *dev);
/* Directory operations */
-yaffs_obj_t *yaffs_create_dir(yaffs_obj_t *parent, const YCHAR *name,
- __u32 mode, __u32 uid, __u32 gid);
-yaffs_obj_t *yaffs_find_by_name(yaffs_obj_t *the_dir, const YCHAR *name);
-int yaffs_ApplyToDirectoryChildren(yaffs_obj_t *the_dir,
- int (*fn) (yaffs_obj_t *));
-
-yaffs_obj_t *yaffs_find_by_number(yaffs_dev_t *dev, __u32 number);
+struct yaffs_obj *yaffs_create_dir(struct yaffs_obj *parent, const YCHAR *name,
+ u32 mode, u32 uid, u32 gid);
+struct yaffs_obj *yaffs_find_by_name(struct yaffs_obj *the_dir,
+ const YCHAR *name);
+struct yaffs_obj *yaffs_find_by_number(struct yaffs_dev *dev, u32 number);
/* Link operations */
-yaffs_obj_t *yaffs_link_obj(yaffs_obj_t *parent, const YCHAR *name,
- yaffs_obj_t *equiv_obj);
+struct yaffs_obj *yaffs_link_obj(struct yaffs_obj *parent, const YCHAR *name,
+ struct yaffs_obj *equiv_obj);
-yaffs_obj_t *yaffs_get_equivalent_obj(yaffs_obj_t *obj);
+struct yaffs_obj *yaffs_get_equivalent_obj(struct yaffs_obj *obj);
/* Symlink operations */
-yaffs_obj_t *yaffs_create_symlink(yaffs_obj_t *parent, const YCHAR *name,
- __u32 mode, __u32 uid, __u32 gid,
- const YCHAR *alias);
-YCHAR *yaffs_get_symlink_alias(yaffs_obj_t *obj);
+struct yaffs_obj *yaffs_create_symlink(struct yaffs_obj *parent,
+ const YCHAR *name, u32 mode, u32 uid,
+ u32 gid, const YCHAR *alias);
+YCHAR *yaffs_get_symlink_alias(struct yaffs_obj *obj);
/* Special inodes (fifos, sockets and devices) */
-yaffs_obj_t *yaffs_create_special(yaffs_obj_t *parent, const YCHAR *name,
- __u32 mode, __u32 uid, __u32 gid, __u32 rdev);
-
+struct yaffs_obj *yaffs_create_special(struct yaffs_obj *parent,
+ const YCHAR *name, u32 mode, u32 uid,
+ u32 gid, u32 rdev);
-int yaffs_set_xattrib(yaffs_obj_t *obj, const YCHAR *name, const void * value, int size, int flags);
-int yaffs_get_xattrib(yaffs_obj_t *obj, const YCHAR *name, void *value, int size);
-int yaffs_list_xattrib(yaffs_obj_t *obj, char *buffer, int size);
-int yaffs_remove_xattrib(yaffs_obj_t *obj, const YCHAR *name);
+int yaffs_set_xattrib(struct yaffs_obj *obj, const YCHAR *name,
+ const void *value, int size, int flags);
+int yaffs_get_xattrib(struct yaffs_obj *obj, const YCHAR *name, void *value,
+ int size);
+int yaffs_list_xattrib(struct yaffs_obj *obj, char *buffer, int size);
+int yaffs_remove_xattrib(struct yaffs_obj *obj, const YCHAR *name);
/* Special directories */
-yaffs_obj_t *yaffs_root(yaffs_dev_t *dev);
-yaffs_obj_t *yaffs_lost_n_found(yaffs_dev_t *dev);
+struct yaffs_obj *yaffs_root(struct yaffs_dev *dev);
+struct yaffs_obj *yaffs_lost_n_found(struct yaffs_dev *dev);
-#ifdef CONFIG_YAFFS_WINCE
-/* CONFIG_YAFFS_WINCE special stuff */
-void yfsd_win_file_time_now(__u32 target[2]);
-#endif
-
-void yaffs_handle_defered_free(yaffs_obj_t *obj);
+void yaffs_handle_defered_free(struct yaffs_obj *obj);
-void yaffs_update_dirty_dirs(yaffs_dev_t *dev);
+void yaffs_update_dirty_dirs(struct yaffs_dev *dev);
-int yaffs_bg_gc(yaffs_dev_t *dev, unsigned urgency);
+int yaffs_bg_gc(struct yaffs_dev *dev, unsigned urgency);
/* Debug dump */
-int yaffs_dump_obj(yaffs_obj_t *obj);
+int yaffs_dump_obj(struct yaffs_obj *obj);
+
+void yaffs_guts_test(struct yaffs_dev *dev);
+int yaffs_guts_ll_init(struct yaffs_dev *dev);
-void yaffs_guts_test(yaffs_dev_t *dev);
/* A few useful functions to be used within the core files*/
-void yaffs_chunk_del(yaffs_dev_t *dev, int chunk_id, int mark_flash, int lyn);
-int yaffs_check_ff(__u8 *buffer, int n_bytes);
-void yaffs_handle_chunk_error(yaffs_dev_t *dev, yaffs_block_info_t *bi);
-
-__u8 *yaffs_get_temp_buffer(yaffs_dev_t *dev, int line_no);
-void yaffs_release_temp_buffer(yaffs_dev_t *dev, __u8 *buffer, int line_no);
-
-yaffs_obj_t *yaffs_find_or_create_by_number(yaffs_dev_t *dev,
- int number,
- yaffs_obj_type type);
-int yaffs_put_chunk_in_file(yaffs_obj_t *in, int inode_chunk,
- int nand_chunk, int in_scan);
-void yaffs_set_obj_name(yaffs_obj_t *obj, const YCHAR *name);
-void yaffs_set_obj_name_from_oh(yaffs_obj_t *obj, const yaffs_obj_header *oh);
-void yaffs_add_obj_to_dir(yaffs_obj_t *directory,
- yaffs_obj_t *obj);
+void yaffs_chunk_del(struct yaffs_dev *dev, int chunk_id, int mark_flash,
+ int lyn);
+int yaffs_check_ff(u8 *buffer, int n_bytes);
+void yaffs_handle_chunk_error(struct yaffs_dev *dev,
+ struct yaffs_block_info *bi);
+
+u8 *yaffs_get_temp_buffer(struct yaffs_dev *dev);
+void yaffs_release_temp_buffer(struct yaffs_dev *dev, u8 *buffer);
+
+struct yaffs_obj *yaffs_find_or_create_by_number(struct yaffs_dev *dev,
+ int number,
+ enum yaffs_obj_type type);
+int yaffs_put_chunk_in_file(struct yaffs_obj *in, int inode_chunk,
+ int nand_chunk, int in_scan);
+void yaffs_set_obj_name(struct yaffs_obj *obj, const YCHAR *name);
+void yaffs_set_obj_name_from_oh(struct yaffs_obj *obj,
+ const struct yaffs_obj_hdr *oh);
+void yaffs_add_obj_to_dir(struct yaffs_obj *directory, struct yaffs_obj *obj);
YCHAR *yaffs_clone_str(const YCHAR *str);
-void yaffs_link_fixup(yaffs_dev_t *dev, yaffs_obj_t *hard_list);
-void yaffs_block_became_dirty(yaffs_dev_t *dev, int block_no);
-int yaffs_update_oh(yaffs_obj_t *in, const YCHAR *name,
- int force, int is_shrink, int shadows,
- yaffs_xattr_mod *xop);
-void yaffs_handle_shadowed_obj(yaffs_dev_t *dev, int obj_id,
- int backward_scanning);
-int yaffs_check_alloc_available(yaffs_dev_t *dev, int n_chunks);
-yaffs_tnode_t *yaffs_get_tnode(yaffs_dev_t *dev);
-yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev,
- yaffs_file_s *file_struct,
- __u32 chunk_id,
- yaffs_tnode_t *passed_tn);
-
-int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset,
- int n_bytes, int write_trhrough);
-void yaffs_resize_file_down( yaffs_obj_t *obj, loff_t new_size);
-void yaffs_skip_rest_of_block(yaffs_dev_t *dev);
-
-int yaffs_count_free_chunks(yaffs_dev_t *dev);
-
-yaffs_tnode_t *yaffs_find_tnode_0(yaffs_dev_t *dev,
- yaffs_file_s *file_struct,
- __u32 chunk_id);
-
-__u32 yaffs_get_group_base(yaffs_dev_t *dev, yaffs_tnode_t *tn, unsigned pos);
+void yaffs_link_fixup(struct yaffs_dev *dev, struct list_head *hard_list);
+void yaffs_block_became_dirty(struct yaffs_dev *dev, int block_no);
+int yaffs_update_oh(struct yaffs_obj *in, const YCHAR *name,
+ int force, int is_shrink, int shadows,
+ struct yaffs_xattr_mod *xop);
+void yaffs_handle_shadowed_obj(struct yaffs_dev *dev, int obj_id,
+ int backward_scanning);
+int yaffs_check_alloc_available(struct yaffs_dev *dev, int n_chunks);
+struct yaffs_tnode *yaffs_get_tnode(struct yaffs_dev *dev);
+struct yaffs_tnode *yaffs_add_find_tnode_0(struct yaffs_dev *dev,
+ struct yaffs_file_var *file_struct,
+ u32 chunk_id,
+ struct yaffs_tnode *passed_tn);
+
+int yaffs_do_file_wr(struct yaffs_obj *in, const u8 *buffer, loff_t offset,
+ int n_bytes, int write_trhrough);
+void yaffs_resize_file_down(struct yaffs_obj *obj, loff_t new_size);
+void yaffs_skip_rest_of_block(struct yaffs_dev *dev);
+
+int yaffs_count_free_chunks(struct yaffs_dev *dev);
+
+struct yaffs_tnode *yaffs_find_tnode_0(struct yaffs_dev *dev,
+ struct yaffs_file_var *file_struct,
+ u32 chunk_id);
+
+u32 yaffs_get_group_base(struct yaffs_dev *dev, struct yaffs_tnode *tn,
+ unsigned pos);
+
+int yaffs_is_non_empty_dir(struct yaffs_obj *obj);
+
+int yaffs_format_dev(struct yaffs_dev *dev);
+
+void yaffs_addr_to_chunk(struct yaffs_dev *dev, loff_t addr,
+ int *chunk_out, u32 *offset_out);
+/*
+ * Marshalling functions to get loff_t file sizes into aand out of
+ * object headers.
+ */
+void yaffs_oh_size_load(struct yaffs_obj_hdr *oh, loff_t fsize);
+loff_t yaffs_oh_to_size(struct yaffs_obj_hdr *oh);
+loff_t yaffs_max_file_size(struct yaffs_dev *dev);
+
+/*
+ * Debug function to count number of blocks in each state
+ * NB Needs to be called with correct number of integers
+ */
+
+void yaffs_count_blocks_by_state(struct yaffs_dev *dev, int bs[10]);
+
+int yaffs_find_chunk_in_file(struct yaffs_obj *in, int inode_chunk,
+ struct yaffs_ext_tags *tags);
#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_linux.h b/target/linux/generic/files/fs/yaffs2/yaffs_linux.h
index 19d7b82..c20ab14 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_linux.h
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_linux.h
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet another Flash File System . A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -16,28 +16,33 @@
#ifndef __YAFFS_LINUX_H__
#define __YAFFS_LINUX_H__
-#include "devextras.h"
#include "yportenv.h"
-struct yaffs_LinuxContext {
- struct ylist_head contextList; /* List of these we have mounted */
- struct yaffs_dev_s *dev;
- struct super_block * superBlock;
- struct task_struct *bgThread; /* Background thread for this device */
- int bgRunning;
- struct semaphore grossLock; /* Gross locking semaphore */
- __u8 *spareBuffer; /* For mtdif2 use. Don't know the size of the buffer
+struct yaffs_linux_context {
+ struct list_head context_list; /* List of these we have mounted */
+ struct yaffs_dev *dev;
+ struct super_block *super;
+ struct task_struct *bg_thread; /* Background thread for this device */
+ int bg_running;
+ struct mutex gross_lock; /* Gross locking mutex*/
+ u8 *spare_buffer; /* For mtdif2 use. Don't know the buffer size
* at compile time so we have to allocate it.
*/
- struct ylist_head searchContexts;
- void (*putSuperFunc)(struct super_block *sb);
-
- struct task_struct *readdirProcess;
+ struct list_head search_contexts;
+ struct task_struct *readdir_process;
unsigned mount_id;
+ int dirty;
};
-#define yaffs_dev_to_lc(dev) ((struct yaffs_LinuxContext *)((dev)->os_context))
+#define yaffs_dev_to_lc(dev) ((struct yaffs_linux_context *)((dev)->os_context))
#define yaffs_dev_to_mtd(dev) ((struct mtd_info *)((dev)->driver_context))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+#define WRITE_SIZE_STR "writesize"
+#define WRITE_SIZE(mtd) ((mtd)->writesize)
+#else
+#define WRITE_SIZE_STR "oobblock"
+#define WRITE_SIZE(mtd) ((mtd)->oobblock)
#endif
+#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_linux_allocator.c b/target/linux/generic/files/fs/yaffs2/yaffs_linux_allocator.c
deleted file mode 100644
index f39b9aa..0000000
--- a/target/linux/generic/files/fs/yaffs2/yaffs_linux_allocator.c
+++ /dev/null
@@ -1,200 +0,0 @@
-/*
- * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
- *
- * Copyright (C) 2002-2010 Aleph One Ltd.
- * for Toby Churchill Ltd and Brightstar Engineering
- *
- * Created by Charles Manning <charles@aleph1.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 2.1 as
- * published by the Free Software Foundation.
- *
- * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
- *
- * Note: Tis code is currently unused. Being checked in in case it becomes useful.
- */
-
-
-#include "yaffs_allocator.h"
-#include "yaffs_guts.h"
-#include "yaffs_trace.h"
-#include "yportenv.h"
-#include "yaffs_linux.h"
-/*
- * Start out with the same allocator as yaffs direct.
- * Todo: Change to Linux slab allocator.
- */
-
-
-
-#define NAMELEN 20
-struct yaffs_AllocatorStruct {
- char tnode_name[NAMELEN+1];
- char object_name[NAMELEN+1];
- struct kmem_cache *tnode_cache;
- struct kmem_cache *object_cache;
-};
-
-typedef struct yaffs_AllocatorStruct yaffs_Allocator;
-
-int mount_id;
-
-void yaffs_deinit_raw_tnodes_and_objs(yaffs_dev_t *dev)
-{
- yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator;
-
- T(YAFFS_TRACE_ALLOCATE,(TSTR("Deinitialising yaffs allocator\n")));
-
- if(allocator){
- if(allocator->tnode_cache){
- kmem_cache_destroy(allocator->tnode_cache);
- allocator->tnode_cache = NULL;
- } else {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("NULL tnode cache\n")));
- YBUG();
- }
-
- if(allocator->object_cache){
- kmem_cache_destroy(allocator->object_cache);
- allocator->object_cache = NULL;
- } else {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("NULL object cache\n")));
- YBUG();
- }
-
- YFREE(allocator);
-
- } else {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("Deinitialising NULL allocator\n")));
- YBUG();
- }
- dev->allocator = NULL;
-}
-
-
-static void fake_ctor0(void *data){data = data;}
-static void fake_ctor1(void *data){data = data;}
-static void fake_ctor2(void *data){data = data;}
-static void fake_ctor3(void *data){data = data;}
-static void fake_ctor4(void *data){data = data;}
-static void fake_ctor5(void *data){data = data;}
-static void fake_ctor6(void *data){data = data;}
-static void fake_ctor7(void *data){data = data;}
-static void fake_ctor8(void *data){data = data;}
-static void fake_ctor9(void *data){data = data;}
-
-static void (*fake_ctor_list[10]) (void *) = {
- fake_ctor0,
- fake_ctor1,
- fake_ctor2,
- fake_ctor3,
- fake_ctor4,
- fake_ctor5,
- fake_ctor6,
- fake_ctor7,
- fake_ctor8,
- fake_ctor9,
-};
-
-void yaffs_init_raw_tnodes_and_objs(yaffs_dev_t *dev)
-{
- yaffs_Allocator *allocator;
- unsigned mount_id = yaffs_dev_to_lc(dev)->mount_id;
-
- T(YAFFS_TRACE_ALLOCATE,(TSTR("Initialising yaffs allocator\n")));
-
- if(dev->allocator)
- YBUG();
- else if(mount_id >= 10){
- T(YAFFS_TRACE_ALWAYS,(TSTR("Bad mount_id %u\n"),mount_id));
- } else {
- allocator = YMALLOC(sizeof(yaffs_Allocator));
- memset(allocator,0,sizeof(yaffs_Allocator));
- dev->allocator = allocator;
-
- if(!dev->allocator){
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs allocator creation failed\n")));
- YBUG();
- return;
-
- }
-
- sprintf(allocator->tnode_name,"yaffs_t_%u",mount_id);
- sprintf(allocator->object_name,"yaffs_o_%u",mount_id);
-
- allocator->tnode_cache =
- kmem_cache_create(allocator->tnode_name,
- dev->tnode_size,
- 0, 0,
- fake_ctor_list[mount_id]);
- if(allocator->tnode_cache)
- T(YAFFS_TRACE_ALLOCATE,
- (TSTR("tnode cache \"%s\" %p\n"),
- allocator->tnode_name,allocator->tnode_cache));
- else {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs cache creation failed\n")));
- YBUG();
- }
-
-
- allocator->object_cache =
- kmem_cache_create(allocator->object_name,
- sizeof(yaffs_obj_t),
- 0, 0,
- fake_ctor_list[mount_id]);
-
- if(allocator->object_cache)
- T(YAFFS_TRACE_ALLOCATE,
- (TSTR("object cache \"%s\" %p\n"),
- allocator->object_name,allocator->object_cache));
-
- else {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs cache creation failed\n")));
- YBUG();
- }
- }
-}
-
-
-yaffs_tnode_t *yaffs_alloc_raw_tnode(yaffs_dev_t *dev)
-{
- yaffs_Allocator *allocator = dev->allocator;
- if(!allocator || !allocator->tnode_cache){
- YBUG();
- return NULL;
- }
- return kmem_cache_alloc(allocator->tnode_cache, GFP_NOFS);
-}
-
-void yaffs_free_raw_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn)
-{
- yaffs_Allocator *allocator = dev->allocator;
- kmem_cache_free(allocator->tnode_cache,tn);
-}
-
-yaffs_obj_t *yaffs_alloc_raw_obj(yaffs_dev_t *dev)
-{
- yaffs_Allocator *allocator = dev->allocator;
- if(!allocator){
- YBUG();
- return NULL;
- }
- if(!allocator->object_cache){
- YBUG();
- return NULL;
- }
- return kmem_cache_alloc(allocator->object_cache, GFP_NOFS);
-}
-
-void yaffs_free_raw_obj(yaffs_dev_t *dev, yaffs_obj_t *obj)
-{
- yaffs_Allocator *allocator = dev->allocator;
- kmem_cache_free(allocator->object_cache,obj);
-}
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_list.h b/target/linux/generic/files/fs/yaffs2/yaffs_list.h
deleted file mode 100644
index 09d80b8..0000000
--- a/target/linux/generic/files/fs/yaffs2/yaffs_list.h
+++ /dev/null
@@ -1,127 +0,0 @@
-/*
- * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
- *
- * Copyright (C) 2002-2010 Aleph One Ltd.
- * for Toby Churchill Ltd and Brightstar Engineering
- *
- * Created by Charles Manning <charles@aleph1.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 2.1 as
- * published by the Free Software Foundation.
- *
- * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
- */
-
-/*
- * This file is just holds extra declarations of macros that would normally
- * be providesd in the Linux kernel. These macros have been written from
- * scratch but are functionally equivalent to the Linux ones.
- *
- */
-
-#ifndef __YAFFS_LIST_H__
-#define __YAFFS_LIST_H__
-
-
-#include "yportenv.h"
-
-/*
- * This is a simple doubly linked list implementation that matches the
- * way the Linux kernel doubly linked list implementation works.
- */
-
-struct ylist_head {
- struct ylist_head *next; /* next in chain */
- struct ylist_head *prev; /* previous in chain */
-};
-
-
-/* Initialise a static list */
-#define YLIST_HEAD(name) \
-struct ylist_head name = { &(name), &(name)}
-
-
-
-/* Initialise a list head to an empty list */
-#define YINIT_LIST_HEAD(p) \
-do { \
- (p)->next = (p);\
- (p)->prev = (p); \
-} while (0)
-
-
-/* Add an element to a list */
-static Y_INLINE void ylist_add(struct ylist_head *newEntry,
- struct ylist_head *list)
-{
- struct ylist_head *listNext = list->next;
-
- list->next = newEntry;
- newEntry->prev = list;
- newEntry->next = listNext;
- listNext->prev = newEntry;
-
-}
-
-static Y_INLINE void ylist_add_tail(struct ylist_head *newEntry,
- struct ylist_head *list)
-{
- struct ylist_head *listPrev = list->prev;
-
- list->prev = newEntry;
- newEntry->next = list;
- newEntry->prev = listPrev;
- listPrev->next = newEntry;
-
-}
-
-
-/* Take an element out of its current list, with or without
- * reinitialising the links.of the entry*/
-static Y_INLINE void ylist_del(struct ylist_head *entry)
-{
- struct ylist_head *listNext = entry->next;
- struct ylist_head *listPrev = entry->prev;
-
- listNext->prev = listPrev;
- listPrev->next = listNext;
-
-}
-
-static Y_INLINE void ylist_del_init(struct ylist_head *entry)
-{
- ylist_del(entry);
- entry->next = entry->prev = entry;
-}
-
-
-/* Test if the list is empty */
-static Y_INLINE int ylist_empty(struct ylist_head *entry)
-{
- return (entry->next == entry);
-}
-
-
-/* ylist_entry takes a pointer to a list entry and offsets it to that
- * we can find a pointer to the object it is embedded in.
- */
-
-
-#define ylist_entry(entry, type, member) \
- ((type *)((char *)(entry)-(unsigned long)(&((type *)NULL)->member)))
-
-
-/* ylist_for_each and list_for_each_safe iterate over lists.
- * ylist_for_each_safe uses temporary storage to make the list delete safe
- */
-
-#define ylist_for_each(itervar, list) \
- for (itervar = (list)->next; itervar != (list); itervar = itervar->next)
-
-#define ylist_for_each_safe(itervar, saveVar, list) \
- for (itervar = (list)->next, saveVar = (list)->next->next; \
- itervar != (list); itervar = saveVar, saveVar = saveVar->next)
-
-
-#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.c b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.c
index b2d4318..7ae63c5 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.c
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.c
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -13,24 +13,43 @@
#include "yportenv.h"
-
#include "yaffs_mtdif.h"
#include "linux/mtd/mtd.h"
#include "linux/types.h"
#include "linux/time.h"
#include "linux/mtd/nand.h"
+#include "linux/kernel.h"
+#include "linux/version.h"
+#include "linux/types.h"
+#include "yaffs_trace.h"
+#include "yaffs_guts.h"
#include "yaffs_linux.h"
-int nandmtd_EraseBlockInNAND(yaffs_dev_t *dev, int blockNumber)
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 2, 0))
+#define MTD_OPS_AUTO_OOB MTD_OOB_AUTO
+#endif
+
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 4, 0))
+#define mtd_erase(m, ei) (m)->erase(m, ei)
+#define mtd_write_oob(m, addr, pops) (m)->write_oob(m, addr, pops)
+#define mtd_read_oob(m, addr, pops) (m)->read_oob(m, addr, pops)
+#define mtd_block_isbad(m, offs) (m)->block_isbad(m, offs)
+#define mtd_block_markbad(m, offs) (m)->block_markbad(m, offs)
+#endif
+
+
+
+int nandmtd_erase_block(struct yaffs_dev *dev, int block_no)
{
struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
- __u32 addr =
- ((loff_t) blockNumber) * dev->param.total_bytes_per_chunk
- * dev->param.chunks_per_block;
+ u32 addr =
+ ((loff_t) block_no) * dev->param.total_bytes_per_chunk *
+ dev->param.chunks_per_block;
struct erase_info ei;
-
int retval = 0;
ei.mtd = mtd;
@@ -41,16 +60,249 @@ int nandmtd_EraseBlockInNAND(yaffs_dev_t *dev, int blockNumber)
ei.callback = NULL;
ei.priv = (u_long) dev;
- retval = mtd->erase(mtd, &ei);
+ retval = mtd_erase(mtd, &ei);
if (retval == 0)
return YAFFS_OK;
- else
+
+ return YAFFS_FAIL;
+}
+
+
+static int yaffs_mtd_write(struct yaffs_dev *dev, int nand_chunk,
+ const u8 *data, int data_len,
+ const u8 *oob, int oob_len)
+{
+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
+ loff_t addr;
+ struct mtd_oob_ops ops;
+ int retval;
+
+ yaffs_trace(YAFFS_TRACE_MTD,
+ "yaffs_mtd_write(%p, %d, %p, %d, %p, %d)\n",
+ dev, nand_chunk, data, data_len, oob, oob_len);
+
+ if (!data || !data_len) {
+ data = NULL;
+ data_len = 0;
+ }
+
+ if (!oob || !oob_len) {
+ oob = NULL;
+ oob_len = 0;
+ }
+
+ addr = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk;
+ memset(&ops, 0, sizeof(ops));
+ ops.mode = MTD_OPS_AUTO_OOB;
+ ops.len = (data) ? data_len : 0;
+ ops.ooblen = oob_len;
+ ops.datbuf = (u8 *)data;
+ ops.oobbuf = (u8 *)oob;
+
+ retval = mtd_write_oob(mtd, addr, &ops);
+ if (retval) {
+ yaffs_trace(YAFFS_TRACE_MTD,
+ "write_oob failed, chunk %d, mtd error %d",
+ nand_chunk, retval);
+ }
+ return retval ? YAFFS_FAIL : YAFFS_OK;
+}
+
+static int yaffs_mtd_read(struct yaffs_dev *dev, int nand_chunk,
+ u8 *data, int data_len,
+ u8 *oob, int oob_len,
+ enum yaffs_ecc_result *ecc_result)
+{
+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
+ loff_t addr;
+ struct mtd_oob_ops ops;
+ int retval;
+
+ addr = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk;
+ memset(&ops, 0, sizeof(ops));
+ ops.mode = MTD_OPS_AUTO_OOB;
+ ops.len = (data) ? data_len : 0;
+ ops.ooblen = oob_len;
+ ops.datbuf = data;
+ ops.oobbuf = oob;
+
+#if (MTD_VERSION_CODE < MTD_VERSION(2, 6, 20))
+ /* In MTD 2.6.18 to 2.6.19 nand_base.c:nand_do_read_oob() has a bug;
+ * help it out with ops.len = ops.ooblen when ops.datbuf == NULL.
+ */
+ ops.len = (ops.datbuf) ? ops.len : ops.ooblen;
+#endif
+ /* Read page and oob using MTD.
+ * Check status and determine ECC result.
+ */
+ retval = mtd_read_oob(mtd, addr, &ops);
+ if (retval)
+ yaffs_trace(YAFFS_TRACE_MTD,
+ "read_oob failed, chunk %d, mtd error %d",
+ nand_chunk, retval);
+
+ switch (retval) {
+ case 0:
+ /* no error */
+ if(ecc_result)
+ *ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
+ break;
+
+ case -EUCLEAN:
+ /* MTD's ECC fixed the data */
+ if(ecc_result)
+ *ecc_result = YAFFS_ECC_RESULT_FIXED;
+ dev->n_ecc_fixed++;
+ break;
+
+ case -EBADMSG:
+ default:
+ /* MTD's ECC could not fix the data */
+ dev->n_ecc_unfixed++;
+ if(ecc_result)
+ *ecc_result = YAFFS_ECC_RESULT_UNFIXED;
return YAFFS_FAIL;
+ }
+
+ return YAFFS_OK;
}
-int nandmtd_InitialiseNAND(yaffs_dev_t *dev)
+static int yaffs_mtd_erase(struct yaffs_dev *dev, int block_no)
+{
+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
+
+ loff_t addr;
+ struct erase_info ei;
+ int retval = 0;
+ u32 block_size;
+
+ block_size = dev->param.total_bytes_per_chunk *
+ dev->param.chunks_per_block;
+ addr = ((loff_t) block_no) * block_size;
+
+ ei.mtd = mtd;
+ ei.addr = addr;
+ ei.len = block_size;
+ ei.time = 1000;
+ ei.retries = 2;
+ ei.callback = NULL;
+ ei.priv = (u_long) dev;
+
+ retval = mtd_erase(mtd, &ei);
+
+ if (retval == 0)
+ return YAFFS_OK;
+
+ return YAFFS_FAIL;
+}
+
+static int yaffs_mtd_mark_bad(struct yaffs_dev *dev, int block_no)
+{
+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
+ int blocksize = dev->param.chunks_per_block * dev->param.total_bytes_per_chunk;
+ int retval;
+
+ yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad", block_no);
+
+ retval = mtd_block_markbad(mtd, (loff_t) blocksize * block_no);
+ return (retval) ? YAFFS_FAIL : YAFFS_OK;
+}
+
+static int yaffs_mtd_check_bad(struct yaffs_dev *dev, int block_no)
+{
+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
+ int blocksize = dev->param.chunks_per_block * dev->param.total_bytes_per_chunk;
+ int retval;
+
+ yaffs_trace(YAFFS_TRACE_MTD, "checking block %d bad", block_no);
+
+ retval = mtd_block_isbad(mtd, (loff_t) blocksize * block_no);
+ return (retval) ? YAFFS_FAIL : YAFFS_OK;
+}
+
+static int yaffs_mtd_initialise(struct yaffs_dev *dev)
+{
+ return YAFFS_OK;
+}
+
+static int yaffs_mtd_deinitialise(struct yaffs_dev *dev)
{
return YAFFS_OK;
}
+
+void yaffs_mtd_drv_install(struct yaffs_dev *dev)
+{
+ struct yaffs_driver *drv = &dev->drv;
+
+ drv->drv_write_chunk_fn = yaffs_mtd_write;
+ drv->drv_read_chunk_fn = yaffs_mtd_read;
+ drv->drv_erase_fn = yaffs_mtd_erase;
+ drv->drv_mark_bad_fn = yaffs_mtd_mark_bad;
+ drv->drv_check_bad_fn = yaffs_mtd_check_bad;
+ drv->drv_initialise_fn = yaffs_mtd_initialise;
+ drv->drv_deinitialise_fn = yaffs_mtd_deinitialise;
+}
+
+
+struct mtd_info * yaffs_get_mtd_device(dev_t sdev)
+{
+ struct mtd_info *mtd;
+
+ mtd = yaffs_get_mtd_device(sdev);
+
+ /* Check it's an mtd device..... */
+ if (MAJOR(sdev) != MTD_BLOCK_MAJOR)
+ return NULL; /* This isn't an mtd device */
+
+ /* Check it's NAND */
+ if (mtd->type != MTD_NANDFLASH) {
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "yaffs: MTD device is not NAND it's type %d",
+ mtd->type);
+ return NULL;
+ }
+
+ yaffs_trace(YAFFS_TRACE_OS, " %s %d", WRITE_SIZE_STR, WRITE_SIZE(mtd));
+ yaffs_trace(YAFFS_TRACE_OS, " oobsize %d", mtd->oobsize);
+ yaffs_trace(YAFFS_TRACE_OS, " erasesize %d", mtd->erasesize);
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29)
+ yaffs_trace(YAFFS_TRACE_OS, " size %u", mtd->size);
+#else
+ yaffs_trace(YAFFS_TRACE_OS, " size %lld", mtd->size);
+#endif
+
+ return mtd;
+}
+
+int yaffs_verify_mtd(struct mtd_info *mtd, int yaffs_version, int inband_tags)
+{
+ if (yaffs_version == 2) {
+ if ((WRITE_SIZE(mtd) < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
+ mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) &&
+ !inband_tags) {
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "MTD device does not have the right page sizes"
+ );
+ return -1;
+ }
+ } else {
+ if (WRITE_SIZE(mtd) < YAFFS_BYTES_PER_CHUNK ||
+ mtd->oobsize != YAFFS_BYTES_PER_SPARE) {
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "MTD device does not support have the right page sizes"
+ );
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+
+void yaffs_put_mtd_device(struct mtd_info *mtd)
+{
+ if(mtd)
+ put_mtd_device(mtd);
+}
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.h b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.h
index 31fc383..9cff224 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.h
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.h
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet another Flash File System . A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -18,10 +18,8 @@
#include "yaffs_guts.h"
-#if (MTD_VERSION_CODE < MTD_VERSION(2, 6, 18))
-extern struct nand_oobinfo yaffs_oobinfo;
-extern struct nand_oobinfo yaffs_noeccinfo;
-#endif
-int nandmtd_EraseBlockInNAND(yaffs_dev_t *dev, int blockNumber);
-int nandmtd_InitialiseNAND(yaffs_dev_t *dev);
+void yaffs_mtd_drv_install(struct yaffs_dev *dev);
+struct mtd_info * yaffs_get_mtd_device(dev_t sdev);
+void yaffs_put_mtd_device(struct mtd_info *mtd);
+int yaffs_verify_mtd(struct mtd_info *mtd, int yaffs_version, int inband_tags);
#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.c b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.c
deleted file mode 100644
index ca7b0a3..0000000
--- a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.c
+++ /dev/null
@@ -1,361 +0,0 @@
-/*
- * YAFFS: Yet another FFS. A NAND-flash specific file system.
- * yaffs_mtdif1.c NAND mtd interface functions for small-page NAND.
- *
- * Copyright (C) 2002-2010 Aleph One Ltd.
- * for Toby Churchill Ltd and Brightstar Engineering
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-/*
- * This module provides the interface between yaffs_nand.c and the
- * MTD API. This version is used when the MTD interface supports the
- * 'mtd_oob_ops' style calls to read_oob and write_oob, circa 2.6.17,
- * and we have small-page NAND device.
- *
- * These functions are invoked via function pointers in yaffs_nand.c.
- * This replaces functionality provided by functions in yaffs_mtdif.c
- * and the yaffs_tags_tCompatability functions in yaffs_tagscompat.c that are
- * called in yaffs_mtdif.c when the function pointers are NULL.
- * We assume the MTD layer is performing ECC (use_nand_ecc is true).
- */
-
-#include "yportenv.h"
-#include "yaffs_trace.h"
-#include "yaffs_guts.h"
-#include "yaffs_packedtags1.h"
-#include "yaffs_tagscompat.h" /* for yaffs_calc_tags_ecc */
-#include "yaffs_linux.h"
-
-#include "linux/kernel.h"
-#include "linux/version.h"
-#include "linux/types.h"
-#include "linux/mtd/mtd.h"
-
-/* Don't compile this module if we don't have MTD's mtd_oob_ops interface */
-#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
-
-#ifndef CONFIG_YAFFS_9BYTE_TAGS
-# define YTAG1_SIZE 8
-#else
-# define YTAG1_SIZE 9
-#endif
-
-#if 0
-/* Use the following nand_ecclayout with MTD when using
- * CONFIG_YAFFS_9BYTE_TAGS and the older on-NAND tags layout.
- * If you have existing Yaffs images and the byte order differs from this,
- * adjust 'oobfree' to match your existing Yaffs data.
- *
- * This nand_ecclayout scatters/gathers to/from the old-yaffs layout with the
- * page_status byte (at NAND spare offset 4) scattered/gathered from/to
- * the 9th byte.
- *
- * Old-style on-NAND format: T0,T1,T2,T3,P,B,T4,T5,E0,E1,E2,T6,T7,E3,E4,E5
- * We have/need PackedTags1 plus page_status: T0,T1,T2,T3,T4,T5,T6,T7,P
- * where Tn are the tag bytes, En are MTD's ECC bytes, P is the page_status
- * byte and B is the small-page bad-block indicator byte.
- */
-static struct nand_ecclayout nand_oob_16 = {
- .eccbytes = 6,
- .eccpos = { 8, 9, 10, 13, 14, 15 },
- .oobavail = 9,
- .oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } }
-};
-#endif
-
-/* Write a chunk (page) of data to NAND.
- *
- * Caller always provides ExtendedTags data which are converted to a more
- * compact (packed) form for storage in NAND. A mini-ECC runs over the
- * contents of the tags meta-data; used to valid the tags when read.
- *
- * - Pack ExtendedTags to PackedTags1 form
- * - Compute mini-ECC for PackedTags1
- * - Write data and packed tags to NAND.
- *
- * Note: Due to the use of the PackedTags1 meta-data which does not include
- * a full sequence number (as found in the larger PackedTags2 form) it is
- * necessary for Yaffs to re-write a chunk/page (just once) to mark it as
- * discarded and dirty. This is not ideal: newer NAND parts are supposed
- * to be written just once. When Yaffs performs this operation, this
- * function is called with a NULL data pointer -- calling MTD write_oob
- * without data is valid usage (2.6.17).
- *
- * Any underlying MTD error results in YAFFS_FAIL.
- * Returns YAFFS_OK or YAFFS_FAIL.
- */
-int nandmtd1_WriteChunkWithTagsToNAND(yaffs_dev_t *dev,
- int nand_chunk, const __u8 *data, const yaffs_ext_tags *etags)
-{
- struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
- int chunkBytes = dev->data_bytes_per_chunk;
- loff_t addr = ((loff_t)nand_chunk) * chunkBytes;
- struct mtd_oob_ops ops;
- yaffs_PackedTags1 pt1;
- int retval;
-
- /* we assume that PackedTags1 and yaffs_tags_t are compatible */
- compile_time_assertion(sizeof(yaffs_PackedTags1) == 12);
- compile_time_assertion(sizeof(yaffs_tags_t) == 8);
-
- yaffs_PackTags1(&pt1, etags);
- yaffs_calc_tags_ecc((yaffs_tags_t *)&pt1);
-
- /* When deleting a chunk, the upper layer provides only skeletal
- * etags, one with is_deleted set. However, we need to update the
- * tags, not erase them completely. So we use the NAND write property
- * that only zeroed-bits stick and set tag bytes to all-ones and
- * zero just the (not) deleted bit.
- */
-#ifndef CONFIG_YAFFS_9BYTE_TAGS
- if (etags->is_deleted) {
- memset(&pt1, 0xff, 8);
- /* clear delete status bit to indicate deleted */
- pt1.deleted = 0;
- }
-#else
- ((__u8 *)&pt1)[8] = 0xff;
- if (etags->is_deleted) {
- memset(&pt1, 0xff, 8);
- /* zero page_status byte to indicate deleted */
- ((__u8 *)&pt1)[8] = 0;
- }
-#endif
-
- memset(&ops, 0, sizeof(ops));
- ops.mode = MTD_OOB_AUTO;
- ops.len = (data) ? chunkBytes : 0;
- ops.ooblen = YTAG1_SIZE;
- ops.datbuf = (__u8 *)data;
- ops.oobbuf = (__u8 *)&pt1;
-
- retval = mtd->write_oob(mtd, addr, &ops);
- if (retval) {
- T(YAFFS_TRACE_MTD,
- (TSTR("write_oob failed, chunk %d, mtd error %d"TENDSTR),
- nand_chunk, retval));
- }
- return retval ? YAFFS_FAIL : YAFFS_OK;
-}
-
-/* Return with empty ExtendedTags but add ecc_result.
- */
-static int rettags(yaffs_ext_tags *etags, int ecc_result, int retval)
-{
- if (etags) {
- memset(etags, 0, sizeof(*etags));
- etags->ecc_result = ecc_result;
- }
- return retval;
-}
-
-/* Read a chunk (page) from NAND.
- *
- * Caller expects ExtendedTags data to be usable even on error; that is,
- * all members except ecc_result and block_bad are zeroed.
- *
- * - Check ECC results for data (if applicable)
- * - Check for blank/erased block (return empty ExtendedTags if blank)
- * - Check the PackedTags1 mini-ECC (correct if necessary/possible)
- * - Convert PackedTags1 to ExtendedTags
- * - Update ecc_result and block_bad members to refect state.
- *
- * Returns YAFFS_OK or YAFFS_FAIL.
- */
-int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev,
- int nand_chunk, __u8 *data, yaffs_ext_tags *etags)
-{
- struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
- int chunkBytes = dev->data_bytes_per_chunk;
- loff_t addr = ((loff_t)nand_chunk) * chunkBytes;
- int eccres = YAFFS_ECC_RESULT_NO_ERROR;
- struct mtd_oob_ops ops;
- yaffs_PackedTags1 pt1;
- int retval;
- int deleted;
-
- memset(&ops, 0, sizeof(ops));
- ops.mode = MTD_OOB_AUTO;
- ops.len = (data) ? chunkBytes : 0;
- ops.ooblen = YTAG1_SIZE;
- ops.datbuf = data;
- ops.oobbuf = (__u8 *)&pt1;
-
-#if (MTD_VERSION_CODE < MTD_VERSION(2, 6, 20))
- /* In MTD 2.6.18 to 2.6.19 nand_base.c:nand_do_read_oob() has a bug;
- * help it out with ops.len = ops.ooblen when ops.datbuf == NULL.
- */
- ops.len = (ops.datbuf) ? ops.len : ops.ooblen;
-#endif
- /* Read page and oob using MTD.
- * Check status and determine ECC result.
- */
- retval = mtd->read_oob(mtd, addr, &ops);
- if (retval) {
- T(YAFFS_TRACE_MTD,
- (TSTR("read_oob failed, chunk %d, mtd error %d"TENDSTR),
- nand_chunk, retval));
- }
-
- switch (retval) {
- case 0:
- /* no error */
- break;
-
- case -EUCLEAN:
- /* MTD's ECC fixed the data */
- eccres = YAFFS_ECC_RESULT_FIXED;
- dev->n_ecc_fixed++;
- break;
-
- case -EBADMSG:
- /* MTD's ECC could not fix the data */
- dev->n_ecc_unfixed++;
- /* fall into... */
- default:
- rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0);
- etags->block_bad = (mtd->block_isbad)(mtd, addr);
- return YAFFS_FAIL;
- }
-
- /* Check for a blank/erased chunk.
- */
- if (yaffs_check_ff((__u8 *)&pt1, 8)) {
- /* when blank, upper layers want ecc_result to be <= NO_ERROR */
- return rettags(etags, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_OK);
- }
-
-#ifndef CONFIG_YAFFS_9BYTE_TAGS
- /* Read deleted status (bit) then return it to it's non-deleted
- * state before performing tags mini-ECC check. pt1.deleted is
- * inverted.
- */
- deleted = !pt1.deleted;
- pt1.deleted = 1;
-#else
- deleted = (yaffs_count_bits(((__u8 *)&pt1)[8]) < 7);
-#endif
-
- /* Check the packed tags mini-ECC and correct if necessary/possible.
- */
- retval = yaffs_check_tags_ecc((yaffs_tags_t *)&pt1);
- switch (retval) {
- case 0:
- /* no tags error, use MTD result */
- break;
- case 1:
- /* recovered tags-ECC error */
- dev->n_tags_ecc_fixed++;
- if (eccres == YAFFS_ECC_RESULT_NO_ERROR)
- eccres = YAFFS_ECC_RESULT_FIXED;
- break;
- default:
- /* unrecovered tags-ECC error */
- dev->n_tags_ecc_unfixed++;
- return rettags(etags, YAFFS_ECC_RESULT_UNFIXED, YAFFS_FAIL);
- }
-
- /* Unpack the tags to extended form and set ECC result.
- * [set shouldBeFF just to keep yaffs_unpack_tags1 happy]
- */
- pt1.shouldBeFF = 0xFFFFFFFF;
- yaffs_unpack_tags1(etags, &pt1);
- etags->ecc_result = eccres;
-
- /* Set deleted state */
- etags->is_deleted = deleted;
- return YAFFS_OK;
-}
-
-/* Mark a block bad.
- *
- * This is a persistant state.
- * Use of this function should be rare.
- *
- * Returns YAFFS_OK or YAFFS_FAIL.
- */
-int nandmtd1_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no)
-{
- struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
- int blocksize = dev->param.chunks_per_block * dev->data_bytes_per_chunk;
- int retval;
-
- T(YAFFS_TRACE_BAD_BLOCKS,(TSTR("marking block %d bad"TENDSTR), block_no));
-
- retval = mtd->block_markbad(mtd, (loff_t)blocksize * block_no);
- return (retval) ? YAFFS_FAIL : YAFFS_OK;
-}
-
-/* Check any MTD prerequists.
- *
- * Returns YAFFS_OK or YAFFS_FAIL.
- */
-static int nandmtd1_TestPrerequists(struct mtd_info *mtd)
-{
- /* 2.6.18 has mtd->ecclayout->oobavail */
- /* 2.6.21 has mtd->ecclayout->oobavail and mtd->oobavail */
- int oobavail = mtd->ecclayout->oobavail;
-
- if (oobavail < YTAG1_SIZE) {
- T(YAFFS_TRACE_ERROR,
- (TSTR("mtd device has only %d bytes for tags, need %d"TENDSTR),
- oobavail, YTAG1_SIZE));
- return YAFFS_FAIL;
- }
- return YAFFS_OK;
-}
-
-/* Query for the current state of a specific block.
- *
- * Examine the tags of the first chunk of the block and return the state:
- * - YAFFS_BLOCK_STATE_DEAD, the block is marked bad
- * - YAFFS_BLOCK_STATE_NEEDS_SCANNING, the block is in use
- * - YAFFS_BLOCK_STATE_EMPTY, the block is clean
- *
- * Always returns YAFFS_OK.
- */
-int nandmtd1_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no,
- yaffs_block_state_t *pState, __u32 *pSequenceNumber)
-{
- struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
- int chunkNo = block_no * dev->param.chunks_per_block;
- loff_t addr = (loff_t)chunkNo * dev->data_bytes_per_chunk;
- yaffs_ext_tags etags;
- int state = YAFFS_BLOCK_STATE_DEAD;
- int seqnum = 0;
- int retval;
-
- /* We don't yet have a good place to test for MTD config prerequists.
- * Do it here as we are called during the initial scan.
- */
- if (nandmtd1_TestPrerequists(mtd) != YAFFS_OK)
- return YAFFS_FAIL;
-
- retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags);
- etags.block_bad = (mtd->block_isbad)(mtd, addr);
- if (etags.block_bad) {
- T(YAFFS_TRACE_BAD_BLOCKS,
- (TSTR("block %d is marked bad"TENDSTR), block_no));
- state = YAFFS_BLOCK_STATE_DEAD;
- } else if (etags.ecc_result != YAFFS_ECC_RESULT_NO_ERROR) {
- /* bad tags, need to look more closely */
- state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
- } else if (etags.chunk_used) {
- state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
- seqnum = etags.seq_number;
- } else {
- state = YAFFS_BLOCK_STATE_EMPTY;
- }
-
- *pState = state;
- *pSequenceNumber = seqnum;
-
- /* query always succeeds */
- return YAFFS_OK;
-}
-
-#endif /*MTD_VERSION*/
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.h b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.h
deleted file mode 100644
index 1b2befe..0000000
--- a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif1.h
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * YAFFS: Yet another Flash File System. A NAND-flash specific file system.
- *
- * Copyright (C) 2002-2010 Aleph One Ltd.
- * for Toby Churchill Ltd and Brightstar Engineering
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 2.1 as
- * published by the Free Software Foundation.
- *
- * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
- */
-
-#ifndef __YAFFS_MTDIF1_H__
-#define __YAFFS_MTDIF1_H__
-
-int nandmtd1_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, int nand_chunk,
- const __u8 *data, const yaffs_ext_tags *tags);
-
-int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, int nand_chunk,
- __u8 *data, yaffs_ext_tags *tags);
-
-int nandmtd1_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no);
-
-int nandmtd1_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no,
- yaffs_block_state_t *state, __u32 *seq_number);
-
-#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.c b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.c
deleted file mode 100644
index c6ebdaa..0000000
--- a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.c
+++ /dev/null
@@ -1,257 +0,0 @@
-/*
- * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
- *
- * Copyright (C) 2002-2010 Aleph One Ltd.
- * for Toby Churchill Ltd and Brightstar Engineering
- *
- * Created by Charles Manning <charles@aleph1.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-/* mtd interface for YAFFS2 */
-
-#include "yportenv.h"
-#include "yaffs_trace.h"
-
-#include "yaffs_mtdif2.h"
-
-#include "linux/mtd/mtd.h"
-#include "linux/types.h"
-#include "linux/time.h"
-
-#include "yaffs_packedtags2.h"
-
-#include "yaffs_linux.h"
-
-/* NB For use with inband tags....
- * We assume that the data buffer is of size totalBytersPerChunk so that we can also
- * use it to load the tags.
- */
-int nandmtd2_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, int nand_chunk,
- const __u8 *data,
- const yaffs_ext_tags *tags)
-{
- struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
-#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
- struct mtd_oob_ops ops;
-#else
- size_t dummy;
-#endif
- int retval = 0;
-
- loff_t addr;
-
- yaffs_PackedTags2 pt;
-
- int packed_tags_size = dev->param.no_tags_ecc ? sizeof(pt.t) : sizeof(pt);
- void * packed_tags_ptr = dev->param.no_tags_ecc ? (void *) &pt.t : (void *)&pt;
-
- T(YAFFS_TRACE_MTD,
- (TSTR
- ("nandmtd2_WriteChunkWithTagsToNAND chunk %d data %p tags %p"
- TENDSTR), nand_chunk, data, tags));
-
-
- addr = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk;
-
- /* For yaffs2 writing there must be both data and tags.
- * If we're using inband tags, then the tags are stuffed into
- * the end of the data buffer.
- */
- if (!data || !tags)
- BUG();
- else if (dev->param.inband_tags) {
- yaffs_PackedTags2TagsPart *pt2tp;
- pt2tp = (yaffs_PackedTags2TagsPart *)(data + dev->data_bytes_per_chunk);
- yaffs_PackTags2TagsPart(pt2tp, tags);
- } else
- yaffs_PackTags2(&pt, tags, !dev->param.no_tags_ecc);
-
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
- ops.mode = MTD_OOB_AUTO;
- ops.ooblen = (dev->param.inband_tags) ? 0 : packed_tags_size;
- ops.len = dev->param.total_bytes_per_chunk;
- ops.ooboffs = 0;
- ops.datbuf = (__u8 *)data;
- ops.oobbuf = (dev->param.inband_tags) ? NULL : packed_tags_ptr;
- retval = mtd->write_oob(mtd, addr, &ops);
-
-#else
- if (!dev->param.inband_tags) {
- retval =
- mtd->write_ecc(mtd, addr, dev->data_bytes_per_chunk,
- &dummy, data, (__u8 *) packed_tags_ptr, NULL);
- } else {
- retval =
- mtd->write(mtd, addr, dev->param.total_bytes_per_chunk, &dummy,
- data);
- }
-#endif
-
- if (retval == 0)
- return YAFFS_OK;
- else
- return YAFFS_FAIL;
-}
-
-int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, int nand_chunk,
- __u8 *data, yaffs_ext_tags *tags)
-{
- struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
-#if (MTD_VERSION_CODE > MTD_VERSION(2, 6, 17))
- struct mtd_oob_ops ops;
-#endif
- size_t dummy;
- int retval = 0;
- int localData = 0;
-
- loff_t addr = ((loff_t) nand_chunk) * dev->param.total_bytes_per_chunk;
-
- yaffs_PackedTags2 pt;
-
- int packed_tags_size = dev->param.no_tags_ecc ? sizeof(pt.t) : sizeof(pt);
- void * packed_tags_ptr = dev->param.no_tags_ecc ? (void *) &pt.t: (void *)&pt;
-
- T(YAFFS_TRACE_MTD,
- (TSTR
- ("nandmtd2_ReadChunkWithTagsFromNAND chunk %d data %p tags %p"
- TENDSTR), nand_chunk, data, tags));
-
- if (dev->param.inband_tags) {
-
- if (!data) {
- localData = 1;
- data = yaffs_get_temp_buffer(dev, __LINE__);
- }
-
-
- }
-
-
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
- if (dev->param.inband_tags || (data && !tags))
- retval = mtd->read(mtd, addr, dev->param.total_bytes_per_chunk,
- &dummy, data);
- else if (tags) {
- ops.mode = MTD_OOB_AUTO;
- ops.ooblen = packed_tags_size;
- ops.len = data ? dev->data_bytes_per_chunk : packed_tags_size;
- ops.ooboffs = 0;
- ops.datbuf = data;
- ops.oobbuf = yaffs_dev_to_lc(dev)->spareBuffer;
- retval = mtd->read_oob(mtd, addr, &ops);
- }
-#else
- if (!dev->param.inband_tags && data && tags) {
-
- retval = mtd->read_ecc(mtd, addr, dev->data_bytes_per_chunk,
- &dummy, data, dev->spareBuffer,
- NULL);
- } else {
- if (data)
- retval =
- mtd->read(mtd, addr, dev->data_bytes_per_chunk, &dummy,
- data);
- if (!dev->param.inband_tags && tags)
- retval =
- mtd->read_oob(mtd, addr, mtd->oobsize, &dummy,
- dev->spareBuffer);
- }
-#endif
-
-
- if (dev->param.inband_tags) {
- if (tags) {
- yaffs_PackedTags2TagsPart *pt2tp;
- pt2tp = (yaffs_PackedTags2TagsPart *)&data[dev->data_bytes_per_chunk];
- yaffs_unpack_tags2tags_part(tags, pt2tp);
- }
- } else {
- if (tags) {
- memcpy(packed_tags_ptr, yaffs_dev_to_lc(dev)->spareBuffer, packed_tags_size);
- yaffs_unpack_tags2(tags, &pt, !dev->param.no_tags_ecc);
- }
- }
-
- if (localData)
- yaffs_release_temp_buffer(dev, data, __LINE__);
-
- if (tags && retval == -EBADMSG && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR) {
- tags->ecc_result = YAFFS_ECC_RESULT_UNFIXED;
- dev->n_ecc_unfixed++;
- }
- if(tags && retval == -EUCLEAN && tags->ecc_result == YAFFS_ECC_RESULT_NO_ERROR) {
- tags->ecc_result = YAFFS_ECC_RESULT_FIXED;
- dev->n_ecc_fixed++;
- }
- if (retval == 0)
- return YAFFS_OK;
- else
- return YAFFS_FAIL;
-}
-
-int nandmtd2_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no)
-{
- struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
- int retval;
- T(YAFFS_TRACE_MTD,
- (TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), block_no));
-
- retval =
- mtd->block_markbad(mtd,
- block_no * dev->param.chunks_per_block *
- dev->param.total_bytes_per_chunk);
-
- if (retval == 0)
- return YAFFS_OK;
- else
- return YAFFS_FAIL;
-
-}
-
-int nandmtd2_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no,
- yaffs_block_state_t *state, __u32 *seq_number)
-{
- struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
- int retval;
-
- T(YAFFS_TRACE_MTD,
- (TSTR("nandmtd2_QueryNANDBlock %d" TENDSTR), block_no));
- retval =
- mtd->block_isbad(mtd,
- block_no * dev->param.chunks_per_block *
- dev->param.total_bytes_per_chunk);
-
- if (retval) {
- T(YAFFS_TRACE_MTD, (TSTR("block is bad" TENDSTR)));
-
- *state = YAFFS_BLOCK_STATE_DEAD;
- *seq_number = 0;
- } else {
- yaffs_ext_tags t;
- nandmtd2_ReadChunkWithTagsFromNAND(dev,
- block_no *
- dev->param.chunks_per_block, NULL,
- &t);
-
- if (t.chunk_used) {
- *seq_number = t.seq_number;
- *state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
- } else {
- *seq_number = 0;
- *state = YAFFS_BLOCK_STATE_EMPTY;
- }
- }
- T(YAFFS_TRACE_MTD,
- (TSTR("block is bad seq %d state %d" TENDSTR), *seq_number,
- *state));
-
- if (retval == 0)
- return YAFFS_OK;
- else
- return YAFFS_FAIL;
-}
-
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.h b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.h
deleted file mode 100644
index 31c8216..0000000
--- a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif2.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
- *
- * Copyright (C) 2002-2010 Aleph One Ltd.
- * for Toby Churchill Ltd and Brightstar Engineering
- *
- * Created by Charles Manning <charles@aleph1.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 2.1 as
- * published by the Free Software Foundation.
- *
- * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
- */
-
-#ifndef __YAFFS_MTDIF2_H__
-#define __YAFFS_MTDIF2_H__
-
-#include "yaffs_guts.h"
-int nandmtd2_WriteChunkWithTagsToNAND(yaffs_dev_t *dev, int nand_chunk,
- const __u8 *data,
- const yaffs_ext_tags *tags);
-int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_dev_t *dev, int nand_chunk,
- __u8 *data, yaffs_ext_tags *tags);
-int nandmtd2_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no);
-int nandmtd2_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no,
- yaffs_block_state_t *state, __u32 *seq_number);
-
-#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_nameval.c b/target/linux/generic/files/fs/yaffs2/yaffs_nameval.c
index a4ed297..4bdf4ed 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_nameval.c
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_nameval.c
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -12,58 +12,58 @@
*/
/*
- * This simple implementation of a name-value store assumes a small number of values and fits
- * into a small finite buffer.
+ * This simple implementation of a name-value store assumes a small number of
+* values and fits into a small finite buffer.
*
* Each attribute is stored as a record:
* sizeof(int) bytes record size.
* strnlen+1 bytes name null terminated.
* nbytes value.
* ----------
- * total size stored in record size
+ * total size stored in record size
*
* This code has not been tested with unicode yet.
*/
-
#include "yaffs_nameval.h"
#include "yportenv.h"
-
+
static int nval_find(const char *xb, int xb_size, const YCHAR *name,
- int *exist_size)
+ int *exist_size)
{
- int pos=0;
+ int pos = 0;
int size;
- memcpy(&size,xb,sizeof(int));
- while(size > 0 && (size < xb_size) && (pos + size < xb_size)){
- if(yaffs_strncmp((YCHAR *)(xb+pos+sizeof(int)),name,size) == 0){
- if(exist_size)
+ memcpy(&size, xb, sizeof(int));
+ while (size > 0 && (size < xb_size) && (pos + size < xb_size)) {
+ if (!strncmp((YCHAR *) (xb + pos + sizeof(int)),
+ name, size)) {
+ if (exist_size)
*exist_size = size;
return pos;
}
pos += size;
- if(pos < xb_size -sizeof(int))
- memcpy(&size,xb + pos,sizeof(int));
+ if (pos < xb_size - sizeof(int))
+ memcpy(&size, xb + pos, sizeof(int));
else
size = 0;
}
- if(exist_size)
+ if (exist_size)
*exist_size = 0;
- return -1;
+ return -ENODATA;
}
static int nval_used(const char *xb, int xb_size)
{
- int pos=0;
+ int pos = 0;
int size;
- memcpy(&size,xb + pos,sizeof(int));
- while(size > 0 && (size < xb_size) && (pos + size < xb_size)){
+ memcpy(&size, xb + pos, sizeof(int));
+ while (size > 0 && (size < xb_size) && (pos + size < xb_size)) {
pos += size;
- if(pos < xb_size -sizeof(int))
- memcpy(&size,xb + pos,sizeof(int));
+ if (pos < xb_size - sizeof(int))
+ memcpy(&size, xb + pos, sizeof(int));
else
size = 0;
}
@@ -72,71 +72,74 @@ static int nval_used(const char *xb, int xb_size)
int nval_del(char *xb, int xb_size, const YCHAR *name)
{
- int pos = nval_find(xb, xb_size, name, NULL);
+ int pos = nval_find(xb, xb_size, name, NULL);
int size;
-
- if(pos >= 0 && pos < xb_size){
- /* Find size, shift rest over this record, then zero out the rest of buffer */
- memcpy(&size,xb+pos,sizeof(int));
- memcpy(xb + pos, xb + pos + size, xb_size - (pos + size));
- memset(xb + (xb_size - size),0,size);
- return 0;
- } else
+
+ if (pos < 0 || pos >= xb_size)
return -ENODATA;
+
+ /* Find size, shift rest over this record,
+ * then zero out the rest of buffer */
+ memcpy(&size, xb + pos, sizeof(int));
+ memcpy(xb + pos, xb + pos + size, xb_size - (pos + size));
+ memset(xb + (xb_size - size), 0, size);
+ return 0;
}
-int nval_set(char *xb, int xb_size, const YCHAR *name, const char *buf, int bsize, int flags)
+int nval_set(char *xb, int xb_size, const YCHAR *name, const char *buf,
+ int bsize, int flags)
{
int pos;
- int namelen = yaffs_strnlen(name,xb_size);
+ int namelen = strnlen(name, xb_size);
int reclen;
int size_exist = 0;
int space;
int start;
- pos = nval_find(xb,xb_size,name, &size_exist);
+ pos = nval_find(xb, xb_size, name, &size_exist);
- if(flags & XATTR_CREATE && pos >= 0)
+ if (flags & XATTR_CREATE && pos >= 0)
return -EEXIST;
- if(flags & XATTR_REPLACE && pos < 0)
+ if (flags & XATTR_REPLACE && pos < 0)
return -ENODATA;
- start = nval_used(xb,xb_size);
+ start = nval_used(xb, xb_size);
space = xb_size - start + size_exist;
reclen = (sizeof(int) + namelen + 1 + bsize);
- if(reclen > space)
+ if (reclen > space)
return -ENOSPC;
- if(pos >= 0){
- nval_del(xb,xb_size,name);
+ if (pos >= 0) {
+ nval_del(xb, xb_size, name);
start = nval_used(xb, xb_size);
}
pos = start;
- memcpy(xb + pos,&reclen,sizeof(int));
- pos +=sizeof(int);
- yaffs_strncpy((YCHAR *)(xb + pos), name, reclen);
- pos+= (namelen+1);
- memcpy(xb + pos,buf,bsize);
+ memcpy(xb + pos, &reclen, sizeof(int));
+ pos += sizeof(int);
+ strncpy((YCHAR *) (xb + pos), name, reclen);
+ pos += (namelen + 1);
+ memcpy(xb + pos, buf, bsize);
return 0;
}
-int nval_get(const char *xb, int xb_size, const YCHAR *name, char *buf, int bsize)
+int nval_get(const char *xb, int xb_size, const YCHAR * name, char *buf,
+ int bsize)
{
- int pos = nval_find(xb,xb_size,name,NULL);
+ int pos = nval_find(xb, xb_size, name, NULL);
int size;
-
- if(pos >= 0 && pos< xb_size){
-
- memcpy(&size,xb +pos,sizeof(int));
- pos+=sizeof(int); /* advance past record length */
+
+ if (pos >= 0 && pos < xb_size) {
+
+ memcpy(&size, xb + pos, sizeof(int));
+ pos += sizeof(int); /* advance past record length */
size -= sizeof(int);
/* Advance over name string */
- while(xb[pos] && size > 0 && pos < xb_size){
+ while (xb[pos] && size > 0 && pos < xb_size) {
pos++;
size--;
}
@@ -144,16 +147,21 @@ int nval_get(const char *xb, int xb_size, const YCHAR *name, char *buf, int bsiz
pos++;
size--;
- if(size <= bsize){
- memcpy(buf,xb + pos,size);
+ /* If bsize is zero then this is a size query.
+ * Return the size, but don't copy.
+ */
+ if (!bsize)
+ return size;
+
+ if (size <= bsize) {
+ memcpy(buf, xb + pos, size);
return size;
}
-
}
- if(pos >= 0)
+ if (pos >= 0)
return -ERANGE;
- else
- return -ENODATA;
+
+ return -ENODATA;
}
int nval_list(const char *xb, int xb_size, char *buf, int bsize)
@@ -164,33 +172,36 @@ int nval_list(const char *xb, int xb_size, char *buf, int bsize)
int ncopied = 0;
int filled = 0;
- memcpy(&size,xb + pos,sizeof(int));
- while(size > sizeof(int) && size <= xb_size && (pos + size) < xb_size && !filled){
- pos+= sizeof(int);
- size-=sizeof(int);
- name_len = yaffs_strnlen((YCHAR *)(xb + pos), size);
- if(ncopied + name_len + 1 < bsize){
- memcpy(buf,xb+pos,name_len * sizeof(YCHAR));
- buf+= name_len;
+ memcpy(&size, xb + pos, sizeof(int));
+ while (size > sizeof(int) &&
+ size <= xb_size &&
+ (pos + size) < xb_size &&
+ !filled) {
+ pos += sizeof(int);
+ size -= sizeof(int);
+ name_len = strnlen((YCHAR *) (xb + pos), size);
+ if (ncopied + name_len + 1 < bsize) {
+ memcpy(buf, xb + pos, name_len * sizeof(YCHAR));
+ buf += name_len;
*buf = '\0';
buf++;
- if(sizeof(YCHAR) > 1){
+ if (sizeof(YCHAR) > 1) {
*buf = '\0';
buf++;
}
- ncopied += (name_len+1);
- } else
+ ncopied += (name_len + 1);
+ } else {
filled = 1;
- pos+=size;
- if(pos < xb_size -sizeof(int))
- memcpy(&size,xb + pos,sizeof(int));
+ }
+ pos += size;
+ if (pos < xb_size - sizeof(int))
+ memcpy(&size, xb + pos, sizeof(int));
else
size = 0;
}
return ncopied;
}
-
int nval_hasvalues(const char *xb, int xb_size)
{
return nval_used(xb, xb_size) > 0;
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_nameval.h b/target/linux/generic/files/fs/yaffs2/yaffs_nameval.h
index 4255f3b..951e64f 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_nameval.h
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_nameval.h
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet another Flash File System . A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -12,14 +12,17 @@
*
* Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
*/
+
#ifndef __NAMEVAL_H__
#define __NAMEVAL_H__
#include "yportenv.h"
-int nval_del(char *xb, int xb_size, const YCHAR *name);
-int nval_set(char *xb, int xb_size, const YCHAR *name, const char *buf, int bsize, int flags);
-int nval_get(const char *xb, int xb_size, const YCHAR *name, char *buf, int bsize);
+int nval_del(char *xb, int xb_size, const YCHAR * name);
+int nval_set(char *xb, int xb_size, const YCHAR * name, const char *buf,
+ int bsize, int flags);
+int nval_get(const char *xb, int xb_size, const YCHAR * name, char *buf,
+ int bsize);
int nval_list(const char *xb, int xb_size, char *buf, int bsize);
int nval_hasvalues(const char *xb, int xb_size);
#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_nand.c b/target/linux/generic/files/fs/yaffs2/yaffs_nand.c
index d1fe84a..0d8499b 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_nand.c
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_nand.c
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -13,128 +13,110 @@
#include "yaffs_nand.h"
#include "yaffs_tagscompat.h"
-#include "yaffs_tagsvalidity.h"
#include "yaffs_getblockinfo.h"
+#include "yaffs_summary.h"
-int yaffs_rd_chunk_tags_nand(yaffs_dev_t *dev, int nand_chunk,
- __u8 *buffer,
- yaffs_ext_tags *tags)
+static int apply_chunk_offset(struct yaffs_dev *dev, int chunk)
{
- int result;
- yaffs_ext_tags localTags;
+ return chunk - dev->chunk_offset;
+}
- int realignedChunkInNAND = nand_chunk - dev->chunk_offset;
+int yaffs_rd_chunk_tags_nand(struct yaffs_dev *dev, int nand_chunk,
+ u8 *buffer, struct yaffs_ext_tags *tags)
+{
+ int result;
+ struct yaffs_ext_tags local_tags;
+ int flash_chunk = apply_chunk_offset(dev, nand_chunk);
dev->n_page_reads++;
- /* If there are no tags provided, use local tags to get prioritised gc working */
+ /* If there are no tags provided use local tags. */
if (!tags)
- tags = &localTags;
-
- if (dev->param.read_chunk_tags_fn)
- result = dev->param.read_chunk_tags_fn(dev, realignedChunkInNAND, buffer,
- tags);
- else
- result = yaffs_tags_compat_rd(dev,
- realignedChunkInNAND,
- buffer,
- tags);
- if (tags &&
- tags->ecc_result > YAFFS_ECC_RESULT_NO_ERROR) {
-
- yaffs_block_info_t *bi;
- bi = yaffs_get_block_info(dev, nand_chunk/dev->param.chunks_per_block);
+ tags = &local_tags;
+
+ result = dev->tagger.read_chunk_tags_fn(dev, flash_chunk, buffer, tags);
+ if (tags && tags->ecc_result > YAFFS_ECC_RESULT_NO_ERROR) {
+
+ struct yaffs_block_info *bi;
+ bi = yaffs_get_block_info(dev,
+ nand_chunk /
+ dev->param.chunks_per_block);
yaffs_handle_chunk_error(dev, bi);
}
-
return result;
}
-int yaffs_wr_chunk_tags_nand(yaffs_dev_t *dev,
- int nand_chunk,
- const __u8 *buffer,
- yaffs_ext_tags *tags)
+int yaffs_wr_chunk_tags_nand(struct yaffs_dev *dev,
+ int nand_chunk,
+ const u8 *buffer, struct yaffs_ext_tags *tags)
{
+ int result;
+ int flash_chunk = apply_chunk_offset(dev, nand_chunk);
dev->n_page_writes++;
- nand_chunk -= dev->chunk_offset;
-
-
- if (tags) {
- tags->seq_number = dev->seq_number;
- tags->chunk_used = 1;
- if (!yaffs_validate_tags(tags)) {
- T(YAFFS_TRACE_ERROR,
- (TSTR("Writing uninitialised tags" TENDSTR)));
- YBUG();
- }
- T(YAFFS_TRACE_WRITE,
- (TSTR("Writing chunk %d tags %d %d" TENDSTR), nand_chunk,
- tags->obj_id, tags->chunk_id));
- } else {
- T(YAFFS_TRACE_ERROR, (TSTR("Writing with no tags" TENDSTR)));
- YBUG();
+ if (!tags) {
+ yaffs_trace(YAFFS_TRACE_ERROR, "Writing with no tags");
+ BUG();
+ return YAFFS_FAIL;
}
- if (dev->param.write_chunk_tags_fn)
- return dev->param.write_chunk_tags_fn(dev, nand_chunk, buffer,
- tags);
- else
- return yaffs_tags_compat_wr(dev,
- nand_chunk,
- buffer,
- tags);
+ tags->seq_number = dev->seq_number;
+ tags->chunk_used = 1;
+ yaffs_trace(YAFFS_TRACE_WRITE,
+ "Writing chunk %d tags %d %d",
+ nand_chunk, tags->obj_id, tags->chunk_id);
+
+ result = dev->tagger.write_chunk_tags_fn(dev, flash_chunk,
+ buffer, tags);
+
+ yaffs_summary_add(dev, tags, nand_chunk);
+
+ return result;
}
-int yaffs_mark_bad(yaffs_dev_t *dev, int block_no)
+int yaffs_mark_bad(struct yaffs_dev *dev, int block_no)
{
block_no -= dev->block_offset;
+ dev->n_bad_markings++;
+ if (dev->param.disable_bad_block_marking)
+ return YAFFS_OK;
- if (dev->param.bad_block_fn)
- return dev->param.bad_block_fn(dev, block_no);
- else
- return yaffs_tags_compat_mark_bad(dev, block_no);
+ return dev->tagger.mark_bad_fn(dev, block_no);
}
-int yaffs_query_init_block_state(yaffs_dev_t *dev,
- int block_no,
- yaffs_block_state_t *state,
- __u32 *seq_number)
+
+int yaffs_query_init_block_state(struct yaffs_dev *dev,
+ int block_no,
+ enum yaffs_block_state *state,
+ u32 *seq_number)
{
block_no -= dev->block_offset;
-
- if (dev->param.query_block_fn)
- return dev->param.query_block_fn(dev, block_no, state, seq_number);
- else
- return yaffs_tags_compat_query_block(dev, block_no,
- state,
- seq_number);
+ return dev->tagger.query_block_fn(dev, block_no, state, seq_number);
}
-
-int yaffs_erase_block(struct yaffs_dev_s *dev,
- int flash_block)
+int yaffs_erase_block(struct yaffs_dev *dev, int block_no)
{
int result;
- flash_block -= dev->block_offset;
-
+ block_no -= dev->block_offset;
dev->n_erasures++;
-
- result = dev->param.erase_fn(dev, flash_block);
-
+ result = dev->drv.drv_erase_fn(dev, block_no);
return result;
}
-int yaffs_init_nand(struct yaffs_dev_s *dev)
+int yaffs_init_nand(struct yaffs_dev *dev)
{
- if(dev->param.initialise_flash_fn)
- return dev->param.initialise_flash_fn(dev);
+ if (dev->drv.drv_initialise_fn)
+ return dev->drv.drv_initialise_fn(dev);
return YAFFS_OK;
}
-
-
+int yaffs_deinit_nand(struct yaffs_dev *dev)
+{
+ if (dev->drv.drv_deinitialise_fn)
+ return dev->drv.drv_deinitialise_fn(dev);
+ return YAFFS_OK;
+}
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_nand.h b/target/linux/generic/files/fs/yaffs2/yaffs_nand.h
index 24cd147..804e97a 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_nand.h
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_nand.h
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet another Flash File System . A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -17,28 +17,23 @@
#define __YAFFS_NAND_H__
#include "yaffs_guts.h"
+int yaffs_rd_chunk_tags_nand(struct yaffs_dev *dev, int nand_chunk,
+ u8 *buffer, struct yaffs_ext_tags *tags);
+int yaffs_wr_chunk_tags_nand(struct yaffs_dev *dev,
+ int nand_chunk,
+ const u8 *buffer, struct yaffs_ext_tags *tags);
-int yaffs_rd_chunk_tags_nand(yaffs_dev_t *dev, int nand_chunk,
- __u8 *buffer,
- yaffs_ext_tags *tags);
+int yaffs_mark_bad(struct yaffs_dev *dev, int block_no);
-int yaffs_wr_chunk_tags_nand(yaffs_dev_t *dev,
- int nand_chunk,
- const __u8 *buffer,
- yaffs_ext_tags *tags);
+int yaffs_query_init_block_state(struct yaffs_dev *dev,
+ int block_no,
+ enum yaffs_block_state *state,
+ unsigned *seq_number);
-int yaffs_mark_bad(yaffs_dev_t *dev, int block_no);
+int yaffs_erase_block(struct yaffs_dev *dev, int flash_block);
-int yaffs_query_init_block_state(yaffs_dev_t *dev,
- int block_no,
- yaffs_block_state_t *state,
- unsigned *seq_number);
-
-int yaffs_erase_block(struct yaffs_dev_s *dev,
- int flash_block);
-
-int yaffs_init_nand(struct yaffs_dev_s *dev);
+int yaffs_init_nand(struct yaffs_dev *dev);
+int yaffs_deinit_nand(struct yaffs_dev *dev);
#endif
-
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_nandemul2k.h b/target/linux/generic/files/fs/yaffs2/yaffs_nandemul2k.h
deleted file mode 100644
index 30b7cbd..0000000
--- a/target/linux/generic/files/fs/yaffs2/yaffs_nandemul2k.h
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
- *
- * Copyright (C) 2002-2010 Aleph One Ltd.
- * for Toby Churchill Ltd and Brightstar Engineering
- *
- * Created by Charles Manning <charles@aleph1.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 2.1 as
- * published by the Free Software Foundation.
- *
- * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
- */
-
-/* Interface to emulated NAND functions (2k page size) */
-
-#ifndef __YAFFS_NANDEMUL2K_H__
-#define __YAFFS_NANDEMUL2K_H__
-
-#include "yaffs_guts.h"
-
-int nandemul2k_WriteChunkWithTagsToNAND(struct yaffs_dev_s *dev,
- int nand_chunk, const __u8 *data,
- const yaffs_ext_tags *tags);
-int nandemul2k_ReadChunkWithTagsFromNAND(struct yaffs_dev_s *dev,
- int nand_chunk, __u8 *data,
- yaffs_ext_tags *tags);
-int nandemul2k_MarkNANDBlockBad(struct yaffs_dev_s *dev, int block_no);
-int nandemul2k_QueryNANDBlock(struct yaffs_dev_s *dev, int block_no,
- yaffs_block_state_t *state, __u32 *seq_number);
-int nandemul2k_EraseBlockInNAND(struct yaffs_dev_s *dev,
- int flash_block);
-int nandemul2k_InitialiseNAND(struct yaffs_dev_s *dev);
-int nandemul2k_GetBytesPerChunk(void);
-int nandemul2k_GetChunksPerBlock(void);
-int nandemul2k_GetNumberOfBlocks(void);
-
-#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.c b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.c
index 3ad49a9..dd9a331 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.c
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.c
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -14,7 +14,16 @@
#include "yaffs_packedtags1.h"
#include "yportenv.h"
-void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ext_tags *t)
+static const u8 all_ff[20] = {
+ 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff,
+ 0xff, 0xff, 0xff, 0xff
+};
+
+void yaffs_pack_tags1(struct yaffs_packed_tags1 *pt,
+ const struct yaffs_ext_tags *t)
{
pt->chunk_id = t->chunk_id;
pt->serial_number = t->serial_number;
@@ -22,20 +31,17 @@ void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ext_tags *t)
pt->obj_id = t->obj_id;
pt->ecc = 0;
pt->deleted = (t->is_deleted) ? 0 : 1;
- pt->unusedStuff = 0;
- pt->shouldBeFF = 0xFFFFFFFF;
-
+ pt->unused_stuff = 0;
+ pt->should_be_ff = 0xffffffff;
}
-void yaffs_unpack_tags1(yaffs_ext_tags *t, const yaffs_PackedTags1 *pt)
+void yaffs_unpack_tags1(struct yaffs_ext_tags *t,
+ const struct yaffs_packed_tags1 *pt)
{
- static const __u8 allFF[] =
- { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
-0xff };
- if (memcmp(allFF, pt, sizeof(yaffs_PackedTags1))) {
+ if (memcmp(all_ff, pt, sizeof(struct yaffs_packed_tags1))) {
t->block_bad = 0;
- if (pt->shouldBeFF != 0xFFFFFFFF)
+ if (pt->should_be_ff != 0xffffffff)
t->block_bad = 1;
t->chunk_used = 1;
t->obj_id = pt->obj_id;
@@ -45,6 +51,6 @@ void yaffs_unpack_tags1(yaffs_ext_tags *t, const yaffs_PackedTags1 *pt)
t->is_deleted = (pt->deleted) ? 0 : 1;
t->serial_number = pt->serial_number;
} else {
- memset(t, 0, sizeof(yaffs_ext_tags));
+ memset(t, 0, sizeof(struct yaffs_ext_tags));
}
}
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.h b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.h
index 881cc75..b80f0a5 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.h
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.h
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet another Flash File System . A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -20,18 +20,20 @@
#include "yaffs_guts.h"
-typedef struct {
+struct yaffs_packed_tags1 {
unsigned chunk_id:20;
unsigned serial_number:2;
unsigned n_bytes:10;
unsigned obj_id:18;
unsigned ecc:12;
unsigned deleted:1;
- unsigned unusedStuff:1;
- unsigned shouldBeFF;
+ unsigned unused_stuff:1;
+ unsigned should_be_ff;
-} yaffs_PackedTags1;
+};
-void yaffs_PackTags1(yaffs_PackedTags1 *pt, const yaffs_ext_tags *t);
-void yaffs_unpack_tags1(yaffs_ext_tags *t, const yaffs_PackedTags1 *pt);
+void yaffs_pack_tags1(struct yaffs_packed_tags1 *pt,
+ const struct yaffs_ext_tags *t);
+void yaffs_unpack_tags1(struct yaffs_ext_tags *t,
+ const struct yaffs_packed_tags1 *pt);
#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.c b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.c
index 6b854cb..e1d18cc 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.c
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.c
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -14,7 +14,6 @@
#include "yaffs_packedtags2.h"
#include "yportenv.h"
#include "yaffs_trace.h"
-#include "yaffs_tagsvalidity.h"
/* This code packs a set of extended tags into a binary structure for
* NAND storage
@@ -32,167 +31,167 @@
#define EXTRA_SHADOWS_FLAG 0x20000000
#define EXTRA_SPARE_FLAGS 0x10000000
-#define ALL_EXTRA_FLAGS 0xF0000000
+#define ALL_EXTRA_FLAGS 0xf0000000
/* Also, the top 4 bits of the object Id are set to the object type. */
#define EXTRA_OBJECT_TYPE_SHIFT (28)
-#define EXTRA_OBJECT_TYPE_MASK ((0x0F) << EXTRA_OBJECT_TYPE_SHIFT)
+#define EXTRA_OBJECT_TYPE_MASK ((0x0f) << EXTRA_OBJECT_TYPE_SHIFT)
-
-static void yaffs_DumpPackedTags2TagsPart(const yaffs_PackedTags2TagsPart *ptt)
+static void yaffs_dump_packed_tags2_tags_only(
+ const struct yaffs_packed_tags2_tags_only *ptt)
{
- T(YAFFS_TRACE_MTD,
- (TSTR("packed tags obj %d chunk %d byte %d seq %d" TENDSTR),
- ptt->obj_id, ptt->chunk_id, ptt->n_bytes,
- ptt->seq_number));
+ yaffs_trace(YAFFS_TRACE_MTD,
+ "packed tags obj %d chunk %d byte %d seq %d",
+ ptt->obj_id, ptt->chunk_id, ptt->n_bytes, ptt->seq_number);
}
-static void yaffs_DumpPackedTags2(const yaffs_PackedTags2 *pt)
+
+static void yaffs_dump_packed_tags2(const struct yaffs_packed_tags2 *pt)
{
- yaffs_DumpPackedTags2TagsPart(&pt->t);
+ yaffs_dump_packed_tags2_tags_only(&pt->t);
}
-static void yaffs_DumpTags2(const yaffs_ext_tags *t)
+static void yaffs_dump_tags2(const struct yaffs_ext_tags *t)
{
- T(YAFFS_TRACE_MTD,
- (TSTR
- ("ext.tags eccres %d blkbad %d chused %d obj %d chunk%d byte %d del %d ser %d seq %d"
- TENDSTR), t->ecc_result, t->block_bad, t->chunk_used, t->obj_id,
- t->chunk_id, t->n_bytes, t->is_deleted, t->serial_number,
- t->seq_number));
+ yaffs_trace(YAFFS_TRACE_MTD,
+ "ext.tags eccres %d blkbad %d chused %d obj %d chunk%d byte %d del %d ser %d seq %d",
+ t->ecc_result, t->block_bad, t->chunk_used, t->obj_id,
+ t->chunk_id, t->n_bytes, t->is_deleted, t->serial_number,
+ t->seq_number);
}
-void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *ptt,
- const yaffs_ext_tags *t)
+static int yaffs_check_tags_extra_packable(const struct yaffs_ext_tags *t)
+{
+ if (t->chunk_id != 0 || !t->extra_available)
+ return 0;
+
+ /* Check if the file size is too long to store */
+ if (t->extra_obj_type == YAFFS_OBJECT_TYPE_FILE &&
+ (t->extra_file_size >> 31) != 0)
+ return 0;
+ return 1;
+}
+
+void yaffs_pack_tags2_tags_only(struct yaffs_packed_tags2_tags_only *ptt,
+ const struct yaffs_ext_tags *t)
{
ptt->chunk_id = t->chunk_id;
ptt->seq_number = t->seq_number;
ptt->n_bytes = t->n_bytes;
ptt->obj_id = t->obj_id;
- if (t->chunk_id == 0 && t->extra_available) {
+ /* Only store extra tags for object headers.
+ * If it is a file then only store if the file size is short\
+ * enough to fit.
+ */
+ if (yaffs_check_tags_extra_packable(t)) {
/* Store the extra header info instead */
/* We save the parent object in the chunk_id */
- ptt->chunk_id = EXTRA_HEADER_INFO_FLAG
- | t->extra_parent_id;
+ ptt->chunk_id = EXTRA_HEADER_INFO_FLAG | t->extra_parent_id;
if (t->extra_is_shrink)
ptt->chunk_id |= EXTRA_SHRINK_FLAG;
if (t->extra_shadows)
ptt->chunk_id |= EXTRA_SHADOWS_FLAG;
ptt->obj_id &= ~EXTRA_OBJECT_TYPE_MASK;
- ptt->obj_id |=
- (t->extra_obj_type << EXTRA_OBJECT_TYPE_SHIFT);
+ ptt->obj_id |= (t->extra_obj_type << EXTRA_OBJECT_TYPE_SHIFT);
if (t->extra_obj_type == YAFFS_OBJECT_TYPE_HARDLINK)
ptt->n_bytes = t->extra_equiv_id;
else if (t->extra_obj_type == YAFFS_OBJECT_TYPE_FILE)
- ptt->n_bytes = t->extra_length;
+ ptt->n_bytes = (unsigned) t->extra_file_size;
else
ptt->n_bytes = 0;
}
- yaffs_DumpPackedTags2TagsPart(ptt);
- yaffs_DumpTags2(t);
+ yaffs_dump_packed_tags2_tags_only(ptt);
+ yaffs_dump_tags2(t);
}
-
-void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ext_tags *t, int tagsECC)
+void yaffs_pack_tags2(struct yaffs_packed_tags2 *pt,
+ const struct yaffs_ext_tags *t, int tags_ecc)
{
- yaffs_PackTags2TagsPart(&pt->t, t);
+ yaffs_pack_tags2_tags_only(&pt->t, t);
- if(tagsECC)
+ if (tags_ecc)
yaffs_ecc_calc_other((unsigned char *)&pt->t,
- sizeof(yaffs_PackedTags2TagsPart),
- &pt->ecc);
+ sizeof(struct yaffs_packed_tags2_tags_only),
+ &pt->ecc);
}
-
-void yaffs_unpack_tags2tags_part(yaffs_ext_tags *t,
- yaffs_PackedTags2TagsPart *ptt)
+void yaffs_unpack_tags2_tags_only(struct yaffs_ext_tags *t,
+ struct yaffs_packed_tags2_tags_only *ptt)
{
+ memset(t, 0, sizeof(struct yaffs_ext_tags));
+
+ if (ptt->seq_number == 0xffffffff)
+ return;
+
+ t->block_bad = 0;
+ t->chunk_used = 1;
+ t->obj_id = ptt->obj_id;
+ t->chunk_id = ptt->chunk_id;
+ t->n_bytes = ptt->n_bytes;
+ t->is_deleted = 0;
+ t->serial_number = 0;
+ t->seq_number = ptt->seq_number;
+
+ /* Do extra header info stuff */
+ if (ptt->chunk_id & EXTRA_HEADER_INFO_FLAG) {
+ t->chunk_id = 0;
+ t->n_bytes = 0;
+
+ t->extra_available = 1;
+ t->extra_parent_id = ptt->chunk_id & (~(ALL_EXTRA_FLAGS));
+ t->extra_is_shrink = ptt->chunk_id & EXTRA_SHRINK_FLAG ? 1 : 0;
+ t->extra_shadows = ptt->chunk_id & EXTRA_SHADOWS_FLAG ? 1 : 0;
+ t->extra_obj_type = ptt->obj_id >> EXTRA_OBJECT_TYPE_SHIFT;
+ t->obj_id &= ~EXTRA_OBJECT_TYPE_MASK;
- memset(t, 0, sizeof(yaffs_ext_tags));
-
- yaffs_init_tags(t);
-
- if (ptt->seq_number != 0xFFFFFFFF) {
- t->block_bad = 0;
- t->chunk_used = 1;
- t->obj_id = ptt->obj_id;
- t->chunk_id = ptt->chunk_id;
- t->n_bytes = ptt->n_bytes;
- t->is_deleted = 0;
- t->serial_number = 0;
- t->seq_number = ptt->seq_number;
-
- /* Do extra header info stuff */
-
- if (ptt->chunk_id & EXTRA_HEADER_INFO_FLAG) {
- t->chunk_id = 0;
- t->n_bytes = 0;
-
- t->extra_available = 1;
- t->extra_parent_id =
- ptt->chunk_id & (~(ALL_EXTRA_FLAGS));
- t->extra_is_shrink =
- (ptt->chunk_id & EXTRA_SHRINK_FLAG) ? 1 : 0;
- t->extra_shadows =
- (ptt->chunk_id & EXTRA_SHADOWS_FLAG) ? 1 : 0;
- t->extra_obj_type =
- ptt->obj_id >> EXTRA_OBJECT_TYPE_SHIFT;
- t->obj_id &= ~EXTRA_OBJECT_TYPE_MASK;
-
- if (t->extra_obj_type == YAFFS_OBJECT_TYPE_HARDLINK)
- t->extra_equiv_id = ptt->n_bytes;
- else
- t->extra_length = ptt->n_bytes;
- }
+ if (t->extra_obj_type == YAFFS_OBJECT_TYPE_HARDLINK)
+ t->extra_equiv_id = ptt->n_bytes;
+ else
+ t->extra_file_size = ptt->n_bytes;
}
-
- yaffs_DumpPackedTags2TagsPart(ptt);
- yaffs_DumpTags2(t);
-
+ yaffs_dump_packed_tags2_tags_only(ptt);
+ yaffs_dump_tags2(t);
}
-
-void yaffs_unpack_tags2(yaffs_ext_tags *t, yaffs_PackedTags2 *pt, int tagsECC)
+void yaffs_unpack_tags2(struct yaffs_ext_tags *t, struct yaffs_packed_tags2 *pt,
+ int tags_ecc)
{
+ enum yaffs_ecc_result ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
- yaffs_ecc_result ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
-
- if (pt->t.seq_number != 0xFFFFFFFF &&
- tagsECC){
+ if (pt->t.seq_number != 0xffffffff && tags_ecc) {
/* Chunk is in use and we need to do ECC */
-
- yaffs_ECCOther ecc;
+
+ struct yaffs_ecc_other ecc;
int result;
yaffs_ecc_calc_other((unsigned char *)&pt->t,
- sizeof(yaffs_PackedTags2TagsPart),
- &ecc);
- result = yaffs_ecc_correct_other((unsigned char *)&pt->t,
- sizeof(yaffs_PackedTags2TagsPart),
- &pt->ecc, &ecc);
+ sizeof(struct yaffs_packed_tags2_tags_only),
+ &ecc);
+ result =
+ yaffs_ecc_correct_other((unsigned char *)&pt->t,
+ sizeof(struct yaffs_packed_tags2_tags_only),
+ &pt->ecc, &ecc);
switch (result) {
- case 0:
- ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
- break;
- case 1:
- ecc_result = YAFFS_ECC_RESULT_FIXED;
- break;
- case -1:
- ecc_result = YAFFS_ECC_RESULT_UNFIXED;
- break;
- default:
- ecc_result = YAFFS_ECC_RESULT_UNKNOWN;
+ case 0:
+ ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
+ break;
+ case 1:
+ ecc_result = YAFFS_ECC_RESULT_FIXED;
+ break;
+ case -1:
+ ecc_result = YAFFS_ECC_RESULT_UNFIXED;
+ break;
+ default:
+ ecc_result = YAFFS_ECC_RESULT_UNKNOWN;
}
}
-
- yaffs_unpack_tags2tags_part(t, &pt->t);
+ yaffs_unpack_tags2_tags_only(t, &pt->t);
t->ecc_result = ecc_result;
- yaffs_DumpPackedTags2(pt);
- yaffs_DumpTags2(t);
+ yaffs_dump_packed_tags2(pt);
+ yaffs_dump_tags2(t);
}
-
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.h b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.h
index 70bd3c9..675e719 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.h
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags2.h
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet another Flash File System . A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -21,23 +21,27 @@
#include "yaffs_guts.h"
#include "yaffs_ecc.h"
-typedef struct {
+struct yaffs_packed_tags2_tags_only {
unsigned seq_number;
unsigned obj_id;
unsigned chunk_id;
unsigned n_bytes;
-} yaffs_PackedTags2TagsPart;
+};
-typedef struct {
- yaffs_PackedTags2TagsPart t;
- yaffs_ECCOther ecc;
-} yaffs_PackedTags2;
+struct yaffs_packed_tags2 {
+ struct yaffs_packed_tags2_tags_only t;
+ struct yaffs_ecc_other ecc;
+};
/* Full packed tags with ECC, used for oob tags */
-void yaffs_PackTags2(yaffs_PackedTags2 *pt, const yaffs_ext_tags *t, int tagsECC);
-void yaffs_unpack_tags2(yaffs_ext_tags *t, yaffs_PackedTags2 *pt, int tagsECC);
+void yaffs_pack_tags2(struct yaffs_packed_tags2 *pt,
+ const struct yaffs_ext_tags *t, int tags_ecc);
+void yaffs_unpack_tags2(struct yaffs_ext_tags *t, struct yaffs_packed_tags2 *pt,
+ int tags_ecc);
/* Only the tags part (no ECC for use with inband tags */
-void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart *pt, const yaffs_ext_tags *t);
-void yaffs_unpack_tags2tags_part(yaffs_ext_tags *t, yaffs_PackedTags2TagsPart *pt);
+void yaffs_pack_tags2_tags_only(struct yaffs_packed_tags2_tags_only *pt,
+ const struct yaffs_ext_tags *t);
+void yaffs_unpack_tags2_tags_only(struct yaffs_ext_tags *t,
+ struct yaffs_packed_tags2_tags_only *pt);
#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_qsort.c b/target/linux/generic/files/fs/yaffs2/yaffs_qsort.c
deleted file mode 100644
index 187519f..0000000
--- a/target/linux/generic/files/fs/yaffs2/yaffs_qsort.c
+++ /dev/null
@@ -1,163 +0,0 @@
-/*
- * Copyright (c) 1992, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include "yportenv.h"
-/* #include <linux/string.h> */
-
-/*
- * Qsort routine from Bentley & McIlroy's "Engineering a Sort Function".
- */
-#define swapcode(TYPE, parmi, parmj, n) do { \
- long i = (n) / sizeof (TYPE); \
- register TYPE *pi = (TYPE *) (parmi); \
- register TYPE *pj = (TYPE *) (parmj); \
- do { \
- register TYPE t = *pi; \
- *pi++ = *pj; \
- *pj++ = t; \
- } while (--i > 0); \
-} while (0)
-
-#define SWAPINIT(a, es) swaptype = ((char *)a - (char *)0) % sizeof(long) || \
- es % sizeof(long) ? 2 : es == sizeof(long) ? 0 : 1;
-
-static __inline void
-swapfunc(char *a, char *b, int n, int swaptype)
-{
- if (swaptype <= 1)
- swapcode(long, a, b, n);
- else
- swapcode(char, a, b, n);
-}
-
-#define yswap(a, b) do { \
- if (swaptype == 0) { \
- long t = *(long *)(a); \
- *(long *)(a) = *(long *)(b); \
- *(long *)(b) = t; \
- } else \
- swapfunc(a, b, es, swaptype); \
-} while (0)
-
-#define vecswap(a, b, n) if ((n) > 0) swapfunc(a, b, n, swaptype)
-
-static __inline char *
-med3(char *a, char *b, char *c, int (*cmp)(const void *, const void *))
-{
- return cmp(a, b) < 0 ?
- (cmp(b, c) < 0 ? b : (cmp(a, c) < 0 ? c : a))
- : (cmp(b, c) > 0 ? b : (cmp(a, c) < 0 ? a : c));
-}
-
-#ifndef min
-#define min(a, b) (((a) < (b)) ? (a) : (b))
-#endif
-
-void
-yaffs_qsort(void *aa, size_t n, size_t es,
- int (*cmp)(const void *, const void *))
-{
- char *pa, *pb, *pc, *pd, *pl, *pm, *pn;
- int d, r, swaptype, swap_cnt;
- register char *a = aa;
-
-loop: SWAPINIT(a, es);
- swap_cnt = 0;
- if (n < 7) {
- for (pm = (char *)a + es; pm < (char *) a + n * es; pm += es)
- for (pl = pm; pl > (char *) a && cmp(pl - es, pl) > 0;
- pl -= es)
- yswap(pl, pl - es);
- return;
- }
- pm = (char *)a + (n / 2) * es;
- if (n > 7) {
- pl = (char *)a;
- pn = (char *)a + (n - 1) * es;
- if (n > 40) {
- d = (n / 8) * es;
- pl = med3(pl, pl + d, pl + 2 * d, cmp);
- pm = med3(pm - d, pm, pm + d, cmp);
- pn = med3(pn - 2 * d, pn - d, pn, cmp);
- }
- pm = med3(pl, pm, pn, cmp);
- }
- yswap(a, pm);
- pa = pb = (char *)a + es;
-
- pc = pd = (char *)a + (n - 1) * es;
- for (;;) {
- while (pb <= pc && (r = cmp(pb, a)) <= 0) {
- if (r == 0) {
- swap_cnt = 1;
- yswap(pa, pb);
- pa += es;
- }
- pb += es;
- }
- while (pb <= pc && (r = cmp(pc, a)) >= 0) {
- if (r == 0) {
- swap_cnt = 1;
- yswap(pc, pd);
- pd -= es;
- }
- pc -= es;
- }
- if (pb > pc)
- break;
- yswap(pb, pc);
- swap_cnt = 1;
- pb += es;
- pc -= es;
- }
- if (swap_cnt == 0) { /* Switch to insertion sort */
- for (pm = (char *) a + es; pm < (char *) a + n * es; pm += es)
- for (pl = pm; pl > (char *) a && cmp(pl - es, pl) > 0;
- pl -= es)
- yswap(pl, pl - es);
- return;
- }
-
- pn = (char *)a + n * es;
- r = min(pa - (char *)a, pb - pa);
- vecswap(a, pb - r, r);
- r = min((long)(pd - pc), (long)(pn - pd - es));
- vecswap(pb, pn - r, r);
- r = pb - pa;
- if (r > es)
- yaffs_qsort(a, r / es, es, cmp);
- r = pd - pc;
- if (r > es) {
- /* Iterate rather than recurse to save stack space */
- a = pn - r;
- n = r / es;
- goto loop;
- }
-/* yaffs_qsort(pn - r, r / es, es, cmp);*/
-}
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_qsort.h b/target/linux/generic/files/fs/yaffs2/yaffs_qsort.h
deleted file mode 100644
index 4a4981b..0000000
--- a/target/linux/generic/files/fs/yaffs2/yaffs_qsort.h
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
- * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
- *
- * Copyright (C) 2002-2010 Aleph One Ltd.
- * for Toby Churchill Ltd and Brightstar Engineering
- *
- * Created by Charles Manning <charles@aleph1.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 2.1 as
- * published by the Free Software Foundation.
- *
- * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
- */
-
-
-#ifndef __YAFFS_QSORT_H__
-#define __YAFFS_QSORT_H__
-
-#ifdef __KERNEL__
-#include <linux/sort.h>
-
-extern void yaffs_qsort(void *const base, size_t total_elems, size_t size,
- int (*cmp)(const void *, const void *)){
- sort(base, total_elems, size, cmp, NULL);
-}
-
-#else
-
-extern void yaffs_qsort(void *const base, size_t total_elems, size_t size,
- int (*cmp)(const void *, const void *));
-
-#endif
-#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_summary.c b/target/linux/generic/files/fs/yaffs2/yaffs_summary.c
new file mode 100644
index 0000000..6f3c783
--- /dev/null
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_summary.c
@@ -0,0 +1,313 @@
+/*
+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2011 Aleph One Ltd.
+ * for Toby Churchill Ltd and Brightstar Engineering
+ *
+ * Created by Charles Manning <charles@aleph1.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/* Summaries write the useful part of the tags for the chunks in a block into an
+ * an array which is written to the last n chunks of the block.
+ * Reading the summaries gives all the tags for the block in one read. Much
+ * faster.
+ *
+ * Chunks holding summaries are marked with tags making it look like
+ * they are part of a fake file.
+ *
+ * The summary could also be used during gc.
+ *
+ */
+
+#include "yaffs_summary.h"
+#include "yaffs_packedtags2.h"
+#include "yaffs_nand.h"
+#include "yaffs_getblockinfo.h"
+#include "yaffs_bitmap.h"
+
+/*
+ * The summary is built up in an array of summary tags.
+ * This gets written to the last one or two (maybe more) chunks in a block.
+ * A summary header is written as the first part of each chunk of summary data.
+ * The summary header must match or the summary is rejected.
+ */
+
+/* Summary tags don't need the sequence number because that is redundant. */
+struct yaffs_summary_tags {
+ unsigned obj_id;
+ unsigned chunk_id;
+ unsigned n_bytes;
+};
+
+/* Summary header */
+struct yaffs_summary_header {
+ unsigned version; /* Must match current version */
+ unsigned block; /* Must be this block */
+ unsigned seq; /* Must be this sequence number */
+ unsigned sum; /* Just add up all the bytes in the tags */
+};
+
+
+static void yaffs_summary_clear(struct yaffs_dev *dev)
+{
+ if (!dev->sum_tags)
+ return;
+ memset(dev->sum_tags, 0, dev->chunks_per_summary *
+ sizeof(struct yaffs_summary_tags));
+}
+
+
+void yaffs_summary_deinit(struct yaffs_dev *dev)
+{
+ kfree(dev->sum_tags);
+ dev->sum_tags = NULL;
+ kfree(dev->gc_sum_tags);
+ dev->gc_sum_tags = NULL;
+ dev->chunks_per_summary = 0;
+}
+
+int yaffs_summary_init(struct yaffs_dev *dev)
+{
+ int sum_bytes;
+ int chunks_used; /* Number of chunks used by summary */
+ int sum_tags_bytes;
+
+ sum_bytes = dev->param.chunks_per_block *
+ sizeof(struct yaffs_summary_tags);
+
+ chunks_used = (sum_bytes + dev->data_bytes_per_chunk - 1)/
+ (dev->data_bytes_per_chunk -
+ sizeof(struct yaffs_summary_header));
+
+ dev->chunks_per_summary = dev->param.chunks_per_block - chunks_used;
+ sum_tags_bytes = sizeof(struct yaffs_summary_tags) *
+ dev->chunks_per_summary;
+ dev->sum_tags = kmalloc(sum_tags_bytes, GFP_NOFS);
+ dev->gc_sum_tags = kmalloc(sum_tags_bytes, GFP_NOFS);
+ if (!dev->sum_tags || !dev->gc_sum_tags) {
+ yaffs_summary_deinit(dev);
+ return YAFFS_FAIL;
+ }
+
+ yaffs_summary_clear(dev);
+
+ return YAFFS_OK;
+}
+
+static unsigned yaffs_summary_sum(struct yaffs_dev *dev)
+{
+ u8 *sum_buffer = (u8 *)dev->sum_tags;
+ int i;
+ unsigned sum = 0;
+
+ i = sizeof(struct yaffs_summary_tags) *
+ dev->chunks_per_summary;
+ while (i > 0) {
+ sum += *sum_buffer;
+ sum_buffer++;
+ i--;
+ }
+
+ return sum;
+}
+
+static int yaffs_summary_write(struct yaffs_dev *dev, int blk)
+{
+ struct yaffs_ext_tags tags;
+ u8 *buffer;
+ u8 *sum_buffer = (u8 *)dev->sum_tags;
+ int n_bytes;
+ int chunk_in_nand;
+ int chunk_in_block;
+ int result;
+ int this_tx;
+ struct yaffs_summary_header hdr;
+ int sum_bytes_per_chunk = dev->data_bytes_per_chunk - sizeof(hdr);
+ struct yaffs_block_info *bi = yaffs_get_block_info(dev, blk);
+
+ buffer = yaffs_get_temp_buffer(dev);
+ n_bytes = sizeof(struct yaffs_summary_tags) *
+ dev->chunks_per_summary;
+ memset(&tags, 0, sizeof(struct yaffs_ext_tags));
+ tags.obj_id = YAFFS_OBJECTID_SUMMARY;
+ tags.chunk_id = 1;
+ chunk_in_block = dev->chunks_per_summary;
+ chunk_in_nand = dev->alloc_block * dev->param.chunks_per_block +
+ dev->chunks_per_summary;
+ hdr.version = YAFFS_SUMMARY_VERSION;
+ hdr.block = blk;
+ hdr.seq = bi->seq_number;
+ hdr.sum = yaffs_summary_sum(dev);
+
+ do {
+ this_tx = n_bytes;
+ if (this_tx > sum_bytes_per_chunk)
+ this_tx = sum_bytes_per_chunk;
+ memcpy(buffer, &hdr, sizeof(hdr));
+ memcpy(buffer + sizeof(hdr), sum_buffer, this_tx);
+ tags.n_bytes = this_tx + sizeof(hdr);
+ result = yaffs_wr_chunk_tags_nand(dev, chunk_in_nand,
+ buffer, &tags);
+
+ if (result != YAFFS_OK)
+ break;
+ yaffs_set_chunk_bit(dev, blk, chunk_in_block);
+ bi->pages_in_use++;
+ dev->n_free_chunks--;
+
+ n_bytes -= this_tx;
+ sum_buffer += this_tx;
+ chunk_in_nand++;
+ chunk_in_block++;
+ tags.chunk_id++;
+ } while (result == YAFFS_OK && n_bytes > 0);
+ yaffs_release_temp_buffer(dev, buffer);
+
+
+ if (result == YAFFS_OK)
+ bi->has_summary = 1;
+
+
+ return result;
+}
+
+int yaffs_summary_read(struct yaffs_dev *dev,
+ struct yaffs_summary_tags *st,
+ int blk)
+{
+ struct yaffs_ext_tags tags;
+ u8 *buffer;
+ u8 *sum_buffer = (u8 *)st;
+ int n_bytes;
+ int chunk_id;
+ int chunk_in_nand;
+ int chunk_in_block;
+ int result;
+ int this_tx;
+ struct yaffs_summary_header hdr;
+ struct yaffs_block_info *bi = yaffs_get_block_info(dev, blk);
+ int sum_bytes_per_chunk = dev->data_bytes_per_chunk - sizeof(hdr);
+ int sum_tags_bytes;
+
+ sum_tags_bytes = sizeof(struct yaffs_summary_tags) *
+ dev->chunks_per_summary;
+ buffer = yaffs_get_temp_buffer(dev);
+ n_bytes = sizeof(struct yaffs_summary_tags) * dev->chunks_per_summary;
+ chunk_in_block = dev->chunks_per_summary;
+ chunk_in_nand = blk * dev->param.chunks_per_block +
+ dev->chunks_per_summary;
+ chunk_id = 1;
+ do {
+ this_tx = n_bytes;
+ if (this_tx > sum_bytes_per_chunk)
+ this_tx = sum_bytes_per_chunk;
+ result = yaffs_rd_chunk_tags_nand(dev, chunk_in_nand,
+ buffer, &tags);
+
+ if (tags.chunk_id != chunk_id ||
+ tags.obj_id != YAFFS_OBJECTID_SUMMARY ||
+ tags.chunk_used == 0 ||
+ tags.ecc_result > YAFFS_ECC_RESULT_FIXED ||
+ tags.n_bytes != (this_tx + sizeof(hdr)))
+ result = YAFFS_FAIL;
+ if (result != YAFFS_OK)
+ break;
+
+ if (st == dev->sum_tags) {
+ /* If we're scanning then update the block info */
+ yaffs_set_chunk_bit(dev, blk, chunk_in_block);
+ bi->pages_in_use++;
+ }
+ memcpy(&hdr, buffer, sizeof(hdr));
+ memcpy(sum_buffer, buffer + sizeof(hdr), this_tx);
+ n_bytes -= this_tx;
+ sum_buffer += this_tx;
+ chunk_in_nand++;
+ chunk_in_block++;
+ chunk_id++;
+ } while (result == YAFFS_OK && n_bytes > 0);
+ yaffs_release_temp_buffer(dev, buffer);
+
+ if (result == YAFFS_OK) {
+ /* Verify header */
+ if (hdr.version != YAFFS_SUMMARY_VERSION ||
+ hdr.block != blk ||
+ hdr.seq != bi->seq_number ||
+ hdr.sum != yaffs_summary_sum(dev))
+ result = YAFFS_FAIL;
+ }
+
+ if (st == dev->sum_tags && result == YAFFS_OK)
+ bi->has_summary = 1;
+
+ return result;
+}
+
+int yaffs_summary_add(struct yaffs_dev *dev,
+ struct yaffs_ext_tags *tags,
+ int chunk_in_nand)
+{
+ struct yaffs_packed_tags2_tags_only tags_only;
+ struct yaffs_summary_tags *sum_tags;
+ int block_in_nand = chunk_in_nand / dev->param.chunks_per_block;
+ int chunk_in_block = chunk_in_nand % dev->param.chunks_per_block;
+
+ if (!dev->sum_tags)
+ return YAFFS_OK;
+
+ if (chunk_in_block >= 0 && chunk_in_block < dev->chunks_per_summary) {
+ yaffs_pack_tags2_tags_only(&tags_only, tags);
+ sum_tags = &dev->sum_tags[chunk_in_block];
+ sum_tags->chunk_id = tags_only.chunk_id;
+ sum_tags->n_bytes = tags_only.n_bytes;
+ sum_tags->obj_id = tags_only.obj_id;
+
+ if (chunk_in_block == dev->chunks_per_summary - 1) {
+ /* Time to write out the summary */
+ yaffs_summary_write(dev, block_in_nand);
+ yaffs_summary_clear(dev);
+ yaffs_skip_rest_of_block(dev);
+ }
+ }
+ return YAFFS_OK;
+}
+
+int yaffs_summary_fetch(struct yaffs_dev *dev,
+ struct yaffs_ext_tags *tags,
+ int chunk_in_block)
+{
+ struct yaffs_packed_tags2_tags_only tags_only;
+ struct yaffs_summary_tags *sum_tags;
+ if (chunk_in_block >= 0 && chunk_in_block < dev->chunks_per_summary) {
+ sum_tags = &dev->sum_tags[chunk_in_block];
+ tags_only.chunk_id = sum_tags->chunk_id;
+ tags_only.n_bytes = sum_tags->n_bytes;
+ tags_only.obj_id = sum_tags->obj_id;
+ yaffs_unpack_tags2_tags_only(tags, &tags_only);
+ return YAFFS_OK;
+ }
+ return YAFFS_FAIL;
+}
+
+void yaffs_summary_gc(struct yaffs_dev *dev, int blk)
+{
+ struct yaffs_block_info *bi = yaffs_get_block_info(dev, blk);
+ int i;
+
+ if (!bi->has_summary)
+ return;
+
+ for (i = dev->chunks_per_summary;
+ i < dev->param.chunks_per_block;
+ i++) {
+ if (yaffs_check_chunk_bit(dev, blk, i)) {
+ yaffs_clear_chunk_bit(dev, blk, i);
+ bi->pages_in_use--;
+ dev->n_free_chunks++;
+ }
+ }
+}
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_summary.h b/target/linux/generic/files/fs/yaffs2/yaffs_summary.h
new file mode 100644
index 0000000..be141d0
--- /dev/null
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_summary.h
@@ -0,0 +1,37 @@
+/*
+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2011 Aleph One Ltd.
+ * for Toby Churchill Ltd and Brightstar Engineering
+ *
+ * Created by Charles Manning <charles@aleph1.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1 as
+ * published by the Free Software Foundation.
+ *
+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
+ */
+
+#ifndef __YAFFS_SUMMARY_H__
+#define __YAFFS_SUMMARY_H__
+
+#include "yaffs_packedtags2.h"
+
+
+int yaffs_summary_init(struct yaffs_dev *dev);
+void yaffs_summary_deinit(struct yaffs_dev *dev);
+
+int yaffs_summary_add(struct yaffs_dev *dev,
+ struct yaffs_ext_tags *tags,
+ int chunk_in_block);
+int yaffs_summary_fetch(struct yaffs_dev *dev,
+ struct yaffs_ext_tags *tags,
+ int chunk_in_block);
+int yaffs_summary_read(struct yaffs_dev *dev,
+ struct yaffs_summary_tags *st,
+ int blk);
+void yaffs_summary_gc(struct yaffs_dev *dev, int blk);
+
+
+#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.c b/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.c
index c04a2fb..092430b 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.c
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.c
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -17,56 +17,16 @@
#include "yaffs_getblockinfo.h"
#include "yaffs_trace.h"
-static void yaffs_handle_rd_data_error(yaffs_dev_t *dev, int nand_chunk);
-#ifdef NOTYET
-static void yaffs_check_written_block(yaffs_dev_t *dev, int nand_chunk);
-static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk,
- const __u8 *data,
- const yaffs_spare *spare);
-static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk,
- const yaffs_spare *spare);
-static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk);
-#endif
-
-static const char yaffs_count_bits_table[256] = {
- 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4,
- 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
- 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
- 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
- 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
- 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
- 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
- 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
- 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
- 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
- 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
- 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
- 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
- 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
- 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
- 4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8
-};
-
-int yaffs_count_bits(__u8 x)
-{
- int retVal;
- retVal = yaffs_count_bits_table[x];
- return retVal;
-}
+static void yaffs_handle_rd_data_error(struct yaffs_dev *dev, int nand_chunk);
+
/********** Tags ECC calculations *********/
-void yaffs_calc_ecc(const __u8 *data, yaffs_spare *spare)
-{
- yaffs_ecc_cacl(data, spare->ecc1);
- yaffs_ecc_cacl(&data[256], spare->ecc2);
-}
-void yaffs_calc_tags_ecc(yaffs_tags_t *tags)
+void yaffs_calc_tags_ecc(struct yaffs_tags *tags)
{
/* Calculate an ecc */
-
- unsigned char *b = ((yaffs_tags_union_t *) tags)->as_bytes;
+ unsigned char *b = ((union yaffs_tags_union *)tags)->as_bytes;
unsigned i, j;
unsigned ecc = 0;
unsigned bit = 0;
@@ -80,12 +40,10 @@ void yaffs_calc_tags_ecc(yaffs_tags_t *tags)
ecc ^= bit;
}
}
-
tags->ecc = ecc;
-
}
-int yaffs_check_tags_ecc(yaffs_tags_t *tags)
+int yaffs_check_tags_ecc(struct yaffs_tags *tags)
{
unsigned ecc = tags->ecc;
@@ -95,7 +53,7 @@ int yaffs_check_tags_ecc(yaffs_tags_t *tags)
if (ecc && ecc <= 64) {
/* TODO: Handle the failure better. Retire? */
- unsigned char *b = ((yaffs_tags_union_t *) tags)->as_bytes;
+ unsigned char *b = ((union yaffs_tags_union *)tags)->as_bytes;
ecc--;
@@ -110,233 +68,164 @@ int yaffs_check_tags_ecc(yaffs_tags_t *tags)
/* TODO Need to do somethiong here */
return -1; /* unrecovered error */
}
-
return 0;
}
/********** Tags **********/
-static void yaffs_load_tags_to_spare(yaffs_spare *sparePtr,
- yaffs_tags_t *tagsPtr)
+static void yaffs_load_tags_to_spare(struct yaffs_spare *spare_ptr,
+ struct yaffs_tags *tags_ptr)
{
- yaffs_tags_union_t *tu = (yaffs_tags_union_t *) tagsPtr;
-
- yaffs_calc_tags_ecc(tagsPtr);
-
- sparePtr->tb0 = tu->as_bytes[0];
- sparePtr->tb1 = tu->as_bytes[1];
- sparePtr->tb2 = tu->as_bytes[2];
- sparePtr->tb3 = tu->as_bytes[3];
- sparePtr->tb4 = tu->as_bytes[4];
- sparePtr->tb5 = tu->as_bytes[5];
- sparePtr->tb6 = tu->as_bytes[6];
- sparePtr->tb7 = tu->as_bytes[7];
+ union yaffs_tags_union *tu = (union yaffs_tags_union *)tags_ptr;
+
+ yaffs_calc_tags_ecc(tags_ptr);
+
+ spare_ptr->tb0 = tu->as_bytes[0];
+ spare_ptr->tb1 = tu->as_bytes[1];
+ spare_ptr->tb2 = tu->as_bytes[2];
+ spare_ptr->tb3 = tu->as_bytes[3];
+ spare_ptr->tb4 = tu->as_bytes[4];
+ spare_ptr->tb5 = tu->as_bytes[5];
+ spare_ptr->tb6 = tu->as_bytes[6];
+ spare_ptr->tb7 = tu->as_bytes[7];
}
-static void yaffs_get_tags_from_spare(yaffs_dev_t *dev, yaffs_spare *sparePtr,
- yaffs_tags_t *tagsPtr)
+static void yaffs_get_tags_from_spare(struct yaffs_dev *dev,
+ struct yaffs_spare *spare_ptr,
+ struct yaffs_tags *tags_ptr)
{
- yaffs_tags_union_t *tu = (yaffs_tags_union_t *) tagsPtr;
+ union yaffs_tags_union *tu = (union yaffs_tags_union *)tags_ptr;
int result;
- tu->as_bytes[0] = sparePtr->tb0;
- tu->as_bytes[1] = sparePtr->tb1;
- tu->as_bytes[2] = sparePtr->tb2;
- tu->as_bytes[3] = sparePtr->tb3;
- tu->as_bytes[4] = sparePtr->tb4;
- tu->as_bytes[5] = sparePtr->tb5;
- tu->as_bytes[6] = sparePtr->tb6;
- tu->as_bytes[7] = sparePtr->tb7;
+ tu->as_bytes[0] = spare_ptr->tb0;
+ tu->as_bytes[1] = spare_ptr->tb1;
+ tu->as_bytes[2] = spare_ptr->tb2;
+ tu->as_bytes[3] = spare_ptr->tb3;
+ tu->as_bytes[4] = spare_ptr->tb4;
+ tu->as_bytes[5] = spare_ptr->tb5;
+ tu->as_bytes[6] = spare_ptr->tb6;
+ tu->as_bytes[7] = spare_ptr->tb7;
- result = yaffs_check_tags_ecc(tagsPtr);
+ result = yaffs_check_tags_ecc(tags_ptr);
if (result > 0)
dev->n_tags_ecc_fixed++;
else if (result < 0)
dev->n_tags_ecc_unfixed++;
}
-static void yaffs_spare_init(yaffs_spare *spare)
+static void yaffs_spare_init(struct yaffs_spare *spare)
{
- memset(spare, 0xFF, sizeof(yaffs_spare));
+ memset(spare, 0xff, sizeof(struct yaffs_spare));
}
-static int yaffs_wr_nand(struct yaffs_dev_s *dev,
- int nand_chunk, const __u8 *data,
- yaffs_spare *spare)
+static int yaffs_wr_nand(struct yaffs_dev *dev,
+ int nand_chunk, const u8 *data,
+ struct yaffs_spare *spare)
{
- if (nand_chunk < dev->param.start_block * dev->param.chunks_per_block) {
- T(YAFFS_TRACE_ERROR,
- (TSTR("**>> yaffs chunk %d is not valid" TENDSTR),
- nand_chunk));
- return YAFFS_FAIL;
- }
+ int data_size = dev->data_bytes_per_chunk;
- return dev->param.write_chunk_fn(dev, nand_chunk, data, spare);
+ return dev->drv.drv_write_chunk_fn(dev, nand_chunk,
+ data, data_size,
+ (u8 *) spare, sizeof(*spare));
}
-static int yaffs_rd_chunk_nand(struct yaffs_dev_s *dev,
- int nand_chunk,
- __u8 *data,
- yaffs_spare *spare,
- yaffs_ecc_result *ecc_result,
- int doErrorCorrection)
+static int yaffs_rd_chunk_nand(struct yaffs_dev *dev,
+ int nand_chunk,
+ u8 *data,
+ struct yaffs_spare *spare,
+ enum yaffs_ecc_result *ecc_result,
+ int correct_errors)
{
- int retVal;
- yaffs_spare localSpare;
-
- if (!spare && data) {
+ int ret_val;
+ struct yaffs_spare local_spare;
+ int data_size;
+ int spare_size;
+ int ecc_result1, ecc_result2;
+ u8 calc_ecc[3];
+
+ if (!spare) {
/* If we don't have a real spare, then we use a local one. */
/* Need this for the calculation of the ecc */
- spare = &localSpare;
+ spare = &local_spare;
}
-
- if (!dev->param.use_nand_ecc) {
- retVal = dev->param.read_chunk_fn(dev, nand_chunk, data, spare);
- if (data && doErrorCorrection) {
- /* Do ECC correction */
- /* Todo handle any errors */
- int ecc_result1, ecc_result2;
- __u8 calcEcc[3];
-
- yaffs_ecc_cacl(data, calcEcc);
- ecc_result1 =
- yaffs_ecc_correct(data, spare->ecc1, calcEcc);
- yaffs_ecc_cacl(&data[256], calcEcc);
- ecc_result2 =
- yaffs_ecc_correct(&data[256], spare->ecc2, calcEcc);
-
- if (ecc_result1 > 0) {
- T(YAFFS_TRACE_ERROR,
- (TSTR
- ("**>>yaffs ecc error fix performed on chunk %d:0"
- TENDSTR), nand_chunk));
- dev->n_ecc_fixed++;
- } else if (ecc_result1 < 0) {
- T(YAFFS_TRACE_ERROR,
- (TSTR
- ("**>>yaffs ecc error unfixed on chunk %d:0"
- TENDSTR), nand_chunk));
- dev->n_ecc_unfixed++;
- }
-
- if (ecc_result2 > 0) {
- T(YAFFS_TRACE_ERROR,
- (TSTR
- ("**>>yaffs ecc error fix performed on chunk %d:1"
- TENDSTR), nand_chunk));
- dev->n_ecc_fixed++;
- } else if (ecc_result2 < 0) {
- T(YAFFS_TRACE_ERROR,
- (TSTR
- ("**>>yaffs ecc error unfixed on chunk %d:1"
- TENDSTR), nand_chunk));
- dev->n_ecc_unfixed++;
- }
-
- if (ecc_result1 || ecc_result2) {
- /* We had a data problem on this page */
- yaffs_handle_rd_data_error(dev, nand_chunk);
- }
-
- if (ecc_result1 < 0 || ecc_result2 < 0)
- *ecc_result = YAFFS_ECC_RESULT_UNFIXED;
- else if (ecc_result1 > 0 || ecc_result2 > 0)
- *ecc_result = YAFFS_ECC_RESULT_FIXED;
- else
- *ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
- }
- } else {
- /* Must allocate enough memory for spare+2*sizeof(int) */
- /* for ecc results from device. */
- struct yaffs_nand_spare nspare;
-
- memset(&nspare, 0, sizeof(nspare));
-
- retVal = dev->param.read_chunk_fn(dev, nand_chunk, data,
- (yaffs_spare *) &nspare);
- memcpy(spare, &nspare, sizeof(yaffs_spare));
- if (data && doErrorCorrection) {
- if (nspare.eccres1 > 0) {
- T(YAFFS_TRACE_ERROR,
- (TSTR
- ("**>>mtd ecc error fix performed on chunk %d:0"
- TENDSTR), nand_chunk));
- } else if (nspare.eccres1 < 0) {
- T(YAFFS_TRACE_ERROR,
- (TSTR
- ("**>>mtd ecc error unfixed on chunk %d:0"
- TENDSTR), nand_chunk));
- }
-
- if (nspare.eccres2 > 0) {
- T(YAFFS_TRACE_ERROR,
- (TSTR
- ("**>>mtd ecc error fix performed on chunk %d:1"
- TENDSTR), nand_chunk));
- } else if (nspare.eccres2 < 0) {
- T(YAFFS_TRACE_ERROR,
- (TSTR
- ("**>>mtd ecc error unfixed on chunk %d:1"
- TENDSTR), nand_chunk));
- }
-
- if (nspare.eccres1 || nspare.eccres2) {
- /* We had a data problem on this page */
- yaffs_handle_rd_data_error(dev, nand_chunk);
- }
-
- if (nspare.eccres1 < 0 || nspare.eccres2 < 0)
- *ecc_result = YAFFS_ECC_RESULT_UNFIXED;
- else if (nspare.eccres1 > 0 || nspare.eccres2 > 0)
- *ecc_result = YAFFS_ECC_RESULT_FIXED;
- else
- *ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
-
- }
+ data_size = dev->data_bytes_per_chunk;
+ spare_size = sizeof(struct yaffs_spare);
+
+ if (dev->param.use_nand_ecc)
+ return dev->drv.drv_read_chunk_fn(dev, nand_chunk,
+ data, data_size,
+ (u8 *) spare, spare_size,
+ ecc_result);
+
+
+ /* Handle the ECC at this level. */
+
+ ret_val = dev->drv.drv_read_chunk_fn(dev, nand_chunk,
+ data, data_size,
+ (u8 *)spare, spare_size,
+ NULL);
+ if (!data || !correct_errors)
+ return ret_val;
+
+ /* Do ECC correction if needed. */
+ yaffs_ecc_calc(data, calc_ecc);
+ ecc_result1 = yaffs_ecc_correct(data, spare->ecc1, calc_ecc);
+ yaffs_ecc_calc(&data[256], calc_ecc);
+ ecc_result2 = yaffs_ecc_correct(&data[256], spare->ecc2, calc_ecc);
+
+ if (ecc_result1 > 0) {
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "**>>yaffs ecc error fix performed on chunk %d:0",
+ nand_chunk);
+ dev->n_ecc_fixed++;
+ } else if (ecc_result1 < 0) {
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "**>>yaffs ecc error unfixed on chunk %d:0",
+ nand_chunk);
+ dev->n_ecc_unfixed++;
}
- return retVal;
-}
-#ifdef NOTYET
-static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev,
- int nand_chunk)
-{
- static int init;
- static __u8 cmpbuf[YAFFS_BYTES_PER_CHUNK];
- static __u8 data[YAFFS_BYTES_PER_CHUNK];
- /* Might as well always allocate the larger size for */
- /* dev->param.use_nand_ecc == true; */
- static __u8 spare[sizeof(struct yaffs_nand_spare)];
-
- dev->param.read_chunk_fn(dev, nand_chunk, data, (yaffs_spare *) spare);
-
- if (!init) {
- memset(cmpbuf, 0xff, YAFFS_BYTES_PER_CHUNK);
- init = 1;
+ if (ecc_result2 > 0) {
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "**>>yaffs ecc error fix performed on chunk %d:1",
+ nand_chunk);
+ dev->n_ecc_fixed++;
+ } else if (ecc_result2 < 0) {
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "**>>yaffs ecc error unfixed on chunk %d:1",
+ nand_chunk);
+ dev->n_ecc_unfixed++;
}
- if (memcmp(cmpbuf, data, YAFFS_BYTES_PER_CHUNK))
- return YAFFS_FAIL;
- if (memcmp(cmpbuf, spare, 16))
- return YAFFS_FAIL;
+ if (ecc_result1 || ecc_result2) {
+ /* We had a data problem on this page */
+ yaffs_handle_rd_data_error(dev, nand_chunk);
+ }
- return YAFFS_OK;
+ if (ecc_result1 < 0 || ecc_result2 < 0)
+ *ecc_result = YAFFS_ECC_RESULT_UNFIXED;
+ else if (ecc_result1 > 0 || ecc_result2 > 0)
+ *ecc_result = YAFFS_ECC_RESULT_FIXED;
+ else
+ *ecc_result = YAFFS_ECC_RESULT_NO_ERROR;
+ return ret_val;
}
-#endif
/*
* Functions for robustisizing
*/
-static void yaffs_handle_rd_data_error(yaffs_dev_t *dev, int nand_chunk)
+static void yaffs_handle_rd_data_error(struct yaffs_dev *dev, int nand_chunk)
{
int flash_block = nand_chunk / dev->param.chunks_per_block;
/* Mark the block for retirement */
- yaffs_get_block_info(dev, flash_block + dev->block_offset)->needs_retiring = 1;
- T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
- (TSTR("**>>Block %d marked for retirement" TENDSTR), flash_block));
+ yaffs_get_block_info(dev, flash_block + dev->block_offset)->
+ needs_retiring = 1;
+ yaffs_trace(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
+ "**>>Block %d marked for retirement",
+ flash_block);
/* TODO:
* Just do a garbage collection on the affected block
@@ -345,195 +234,148 @@ static void yaffs_handle_rd_data_error(yaffs_dev_t *dev, int nand_chunk)
*/
}
-#ifdef NOTYET
-static void yaffs_check_written_block(yaffs_dev_t *dev, int nand_chunk)
-{
-}
-
-static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk,
- const __u8 *data,
- const yaffs_spare *spare)
-{
-}
-
-static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk,
- const yaffs_spare *spare)
-{
-}
-
-static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk)
-{
- int flash_block = nand_chunk / dev->param.chunks_per_block;
-
- /* Mark the block for retirement */
- yaffs_get_block_info(dev, flash_block)->needs_retiring = 1;
- /* Delete the chunk */
- yaffs_chunk_del(dev, nand_chunk, 1, __LINE__);
-}
-
-static int yaffs_verify_cmp(const __u8 *d0, const __u8 *d1,
- const yaffs_spare *s0, const yaffs_spare *s1)
-{
-
- if (memcmp(d0, d1, YAFFS_BYTES_PER_CHUNK) != 0 ||
- s0->tb0 != s1->tb0 ||
- s0->tb1 != s1->tb1 ||
- s0->tb2 != s1->tb2 ||
- s0->tb3 != s1->tb3 ||
- s0->tb4 != s1->tb4 ||
- s0->tb5 != s1->tb5 ||
- s0->tb6 != s1->tb6 ||
- s0->tb7 != s1->tb7 ||
- s0->ecc1[0] != s1->ecc1[0] ||
- s0->ecc1[1] != s1->ecc1[1] ||
- s0->ecc1[2] != s1->ecc1[2] ||
- s0->ecc2[0] != s1->ecc2[0] ||
- s0->ecc2[1] != s1->ecc2[1] || s0->ecc2[2] != s1->ecc2[2]) {
- return 0;
- }
-
- return 1;
-}
-#endif /* NOTYET */
-
-int yaffs_tags_compat_wr(yaffs_dev_t *dev,
- int nand_chunk,
- const __u8 *data,
- const yaffs_ext_tags *eTags)
+static int yaffs_tags_compat_wr(struct yaffs_dev *dev,
+ int nand_chunk,
+ const u8 *data, const struct yaffs_ext_tags *ext_tags)
{
- yaffs_spare spare;
- yaffs_tags_t tags;
+ struct yaffs_spare spare;
+ struct yaffs_tags tags;
yaffs_spare_init(&spare);
- if (eTags->is_deleted)
+ if (ext_tags->is_deleted)
spare.page_status = 0;
else {
- tags.obj_id = eTags->obj_id;
- tags.chunk_id = eTags->chunk_id;
+ tags.obj_id = ext_tags->obj_id;
+ tags.chunk_id = ext_tags->chunk_id;
- tags.n_bytes_lsb = eTags->n_bytes & 0x3ff;
+ tags.n_bytes_lsb = ext_tags->n_bytes & (1024 - 1);
if (dev->data_bytes_per_chunk >= 1024)
- tags.n_bytes_msb = (eTags->n_bytes >> 10) & 3;
+ tags.n_bytes_msb = (ext_tags->n_bytes >> 10) & 3;
else
tags.n_bytes_msb = 3;
+ tags.serial_number = ext_tags->serial_number;
- tags.serial_number = eTags->serial_number;
-
- if (!dev->param.use_nand_ecc && data)
- yaffs_calc_ecc(data, &spare);
+ if (!dev->param.use_nand_ecc && data) {
+ yaffs_ecc_calc(data, spare.ecc1);
+ yaffs_ecc_calc(&data[256], spare.ecc2);
+ }
yaffs_load_tags_to_spare(&spare, &tags);
-
}
-
return yaffs_wr_nand(dev, nand_chunk, data, &spare);
}
-int yaffs_tags_compat_rd(yaffs_dev_t *dev,
- int nand_chunk,
- __u8 *data,
- yaffs_ext_tags *eTags)
+static int yaffs_tags_compat_rd(struct yaffs_dev *dev,
+ int nand_chunk,
+ u8 *data, struct yaffs_ext_tags *ext_tags)
{
-
- yaffs_spare spare;
- yaffs_tags_t tags;
- yaffs_ecc_result ecc_result = YAFFS_ECC_RESULT_UNKNOWN;
-
- static yaffs_spare spareFF;
+ struct yaffs_spare spare;
+ struct yaffs_tags tags;
+ enum yaffs_ecc_result ecc_result = YAFFS_ECC_RESULT_UNKNOWN;
+ static struct yaffs_spare spare_ff;
static int init;
+ int deleted;
if (!init) {
- memset(&spareFF, 0xFF, sizeof(spareFF));
+ memset(&spare_ff, 0xff, sizeof(spare_ff));
init = 1;
}
- if (yaffs_rd_chunk_nand
- (dev, nand_chunk, data, &spare, &ecc_result, 1)) {
- /* eTags may be NULL */
- if (eTags) {
-
- int deleted =
- (yaffs_count_bits(spare.page_status) < 7) ? 1 : 0;
+ if (!yaffs_rd_chunk_nand(dev, nand_chunk,
+ data, &spare, &ecc_result, 1))
+ return YAFFS_FAIL;
- eTags->is_deleted = deleted;
- eTags->ecc_result = ecc_result;
- eTags->block_bad = 0; /* We're reading it */
- /* therefore it is not a bad block */
- eTags->chunk_used =
- (memcmp(&spareFF, &spare, sizeof(spareFF)) !=
- 0) ? 1 : 0;
+ /* ext_tags may be NULL */
+ if (!ext_tags)
+ return YAFFS_OK;
- if (eTags->chunk_used) {
- yaffs_get_tags_from_spare(dev, &spare, &tags);
+ deleted = (hweight8(spare.page_status) < 7) ? 1 : 0;
- eTags->obj_id = tags.obj_id;
- eTags->chunk_id = tags.chunk_id;
- eTags->n_bytes = tags.n_bytes_lsb;
+ ext_tags->is_deleted = deleted;
+ ext_tags->ecc_result = ecc_result;
+ ext_tags->block_bad = 0; /* We're reading it */
+ /* therefore it is not a bad block */
+ ext_tags->chunk_used =
+ memcmp(&spare_ff, &spare, sizeof(spare_ff)) ? 1 : 0;
- if (dev->data_bytes_per_chunk >= 1024)
- eTags->n_bytes |= (((unsigned) tags.n_bytes_msb) << 10);
+ if (ext_tags->chunk_used) {
+ yaffs_get_tags_from_spare(dev, &spare, &tags);
+ ext_tags->obj_id = tags.obj_id;
+ ext_tags->chunk_id = tags.chunk_id;
+ ext_tags->n_bytes = tags.n_bytes_lsb;
- eTags->serial_number = tags.serial_number;
- }
- }
+ if (dev->data_bytes_per_chunk >= 1024)
+ ext_tags->n_bytes |=
+ (((unsigned)tags.n_bytes_msb) << 10);
- return YAFFS_OK;
- } else {
- return YAFFS_FAIL;
+ ext_tags->serial_number = tags.serial_number;
}
+
+ return YAFFS_OK;
}
-int yaffs_tags_compat_mark_bad(struct yaffs_dev_s *dev,
- int flash_block)
+static int yaffs_tags_compat_mark_bad(struct yaffs_dev *dev, int flash_block)
{
+ struct yaffs_spare spare;
- yaffs_spare spare;
-
- memset(&spare, 0xff, sizeof(yaffs_spare));
+ memset(&spare, 0xff, sizeof(struct yaffs_spare));
spare.block_status = 'Y';
yaffs_wr_nand(dev, flash_block * dev->param.chunks_per_block, NULL,
- &spare);
+ &spare);
yaffs_wr_nand(dev, flash_block * dev->param.chunks_per_block + 1,
- NULL, &spare);
+ NULL, &spare);
return YAFFS_OK;
-
}
-int yaffs_tags_compat_query_block(struct yaffs_dev_s *dev,
- int block_no,
- yaffs_block_state_t *state,
- __u32 *seq_number)
+static int yaffs_tags_compat_query_block(struct yaffs_dev *dev,
+ int block_no,
+ enum yaffs_block_state *state,
+ u32 *seq_number)
{
-
- yaffs_spare spare0, spare1;
- static yaffs_spare spareFF;
+ struct yaffs_spare spare0, spare1;
+ static struct yaffs_spare spare_ff;
static int init;
- yaffs_ecc_result dummy;
+ enum yaffs_ecc_result dummy;
if (!init) {
- memset(&spareFF, 0xFF, sizeof(spareFF));
+ memset(&spare_ff, 0xff, sizeof(spare_ff));
init = 1;
}
*seq_number = 0;
- yaffs_rd_chunk_nand(dev, block_no * dev->param.chunks_per_block, NULL,
- &spare0, &dummy, 1);
- yaffs_rd_chunk_nand(dev, block_no * dev->param.chunks_per_block + 1, NULL,
- &spare1, &dummy, 1);
+ /* Look for bad block markers in the first two chunks */
+ yaffs_rd_chunk_nand(dev, block_no * dev->param.chunks_per_block,
+ NULL, &spare0, &dummy, 0);
+ yaffs_rd_chunk_nand(dev, block_no * dev->param.chunks_per_block + 1,
+ NULL, &spare1, &dummy, 0);
- if (yaffs_count_bits(spare0.block_status & spare1.block_status) < 7)
+ if (hweight8(spare0.block_status & spare1.block_status) < 7)
*state = YAFFS_BLOCK_STATE_DEAD;
- else if (memcmp(&spareFF, &spare0, sizeof(spareFF)) == 0)
+ else if (memcmp(&spare_ff, &spare0, sizeof(spare_ff)) == 0)
*state = YAFFS_BLOCK_STATE_EMPTY;
else
- *state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
+ *state = YAFFS_BLOCK_STATE_NEEDS_SCAN;
return YAFFS_OK;
}
+
+void yaffs_tags_compat_install(struct yaffs_dev *dev)
+{
+ if(dev->param.is_yaffs2)
+ return;
+ if(!dev->tagger.write_chunk_tags_fn)
+ dev->tagger.write_chunk_tags_fn = yaffs_tags_compat_wr;
+ if(!dev->tagger.read_chunk_tags_fn)
+ dev->tagger.read_chunk_tags_fn = yaffs_tags_compat_rd;
+ if(!dev->tagger.query_block_fn)
+ dev->tagger.query_block_fn = yaffs_tags_compat_query_block;
+ if(!dev->tagger.mark_bad_fn)
+ dev->tagger.mark_bad_fn = yaffs_tags_compat_mark_bad;
+}
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.h b/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.h
index 889bf5f..92d298a 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.h
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_tagscompat.h
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet another Flash File System . A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -16,24 +16,29 @@
#ifndef __YAFFS_TAGSCOMPAT_H__
#define __YAFFS_TAGSCOMPAT_H__
+
#include "yaffs_guts.h"
-int yaffs_tags_compat_wr(yaffs_dev_t *dev,
- int nand_chunk,
- const __u8 *data,
- const yaffs_ext_tags *tags);
-int yaffs_tags_compat_rd(yaffs_dev_t *dev,
- int nand_chunk,
- __u8 *data,
- yaffs_ext_tags *tags);
-int yaffs_tags_compat_mark_bad(struct yaffs_dev_s *dev,
- int block_no);
-int yaffs_tags_compat_query_block(struct yaffs_dev_s *dev,
- int block_no,
- yaffs_block_state_t *state,
- __u32 *seq_number);
-
-void yaffs_calc_tags_ecc(yaffs_tags_t *tags);
-int yaffs_check_tags_ecc(yaffs_tags_t *tags);
-int yaffs_count_bits(__u8 byte);
+
+#if 0
+
+
+int yaffs_tags_compat_wr(struct yaffs_dev *dev,
+ int nand_chunk,
+ const u8 *data, const struct yaffs_ext_tags *tags);
+int yaffs_tags_compat_rd(struct yaffs_dev *dev,
+ int nand_chunk,
+ u8 *data, struct yaffs_ext_tags *tags);
+int yaffs_tags_compat_mark_bad(struct yaffs_dev *dev, int block_no);
+int yaffs_tags_compat_query_block(struct yaffs_dev *dev,
+ int block_no,
+ enum yaffs_block_state *state,
+ u32 *seq_number);
+
+#endif
+
+
+void yaffs_tags_compat_install(struct yaffs_dev *dev);
+void yaffs_calc_tags_ecc(struct yaffs_tags *tags);
+int yaffs_check_tags_ecc(struct yaffs_tags *tags);
#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_tagsmarshall.c b/target/linux/generic/files/fs/yaffs2/yaffs_tagsmarshall.c
new file mode 100644
index 0000000..44a83b1
--- /dev/null
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_tagsmarshall.c
@@ -0,0 +1,199 @@
+/*
+ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2011 Aleph One Ltd.
+ * for Toby Churchill Ltd and Brightstar Engineering
+ *
+ * Created by Charles Manning <charles@aleph1.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include "yaffs_guts.h"
+#include "yaffs_trace.h"
+#include "yaffs_packedtags2.h"
+
+static int yaffs_tags_marshall_write(struct yaffs_dev *dev,
+ int nand_chunk, const u8 *data,
+ const struct yaffs_ext_tags *tags)
+{
+ struct yaffs_packed_tags2 pt;
+ int retval;
+
+ int packed_tags_size =
+ dev->param.no_tags_ecc ? sizeof(pt.t) : sizeof(pt);
+ void *packed_tags_ptr =
+ dev->param.no_tags_ecc ? (void *)&pt.t : (void *)&pt;
+
+ yaffs_trace(YAFFS_TRACE_MTD,
+ "yaffs_tags_marshall_write chunk %d data %p tags %p",
+ nand_chunk, data, tags);
+
+ /* For yaffs2 writing there must be both data and tags.
+ * If we're using inband tags, then the tags are stuffed into
+ * the end of the data buffer.
+ */
+ if (!data || !tags)
+ BUG();
+ else if (dev->param.inband_tags) {
+ struct yaffs_packed_tags2_tags_only *pt2tp;
+ pt2tp =
+ (struct yaffs_packed_tags2_tags_only *)(data +
+ dev->
+ data_bytes_per_chunk);
+ yaffs_pack_tags2_tags_only(pt2tp, tags);
+ } else {
+ yaffs_pack_tags2(&pt, tags, !dev->param.no_tags_ecc);
+ }
+
+ retval = dev->drv.drv_write_chunk_fn(dev, nand_chunk,
+ data, dev->param.total_bytes_per_chunk,
+ (dev->param.inband_tags) ? NULL : packed_tags_ptr,
+ (dev->param.inband_tags) ? 0 : packed_tags_size);
+
+ return retval;
+}
+
+static int yaffs_tags_marshall_read(struct yaffs_dev *dev,
+ int nand_chunk, u8 *data,
+ struct yaffs_ext_tags *tags)
+{
+ int retval = 0;
+ int local_data = 0;
+ u8 spare_buffer[100];
+ enum yaffs_ecc_result ecc_result;
+
+ struct yaffs_packed_tags2 pt;
+
+ int packed_tags_size =
+ dev->param.no_tags_ecc ? sizeof(pt.t) : sizeof(pt);
+ void *packed_tags_ptr =
+ dev->param.no_tags_ecc ? (void *)&pt.t : (void *)&pt;
+
+ yaffs_trace(YAFFS_TRACE_MTD,
+ "yaffs_tags_marshall_read chunk %d data %p tags %p",
+ nand_chunk, data, tags);
+
+ if (dev->param.inband_tags) {
+ if (!data) {
+ local_data = 1;
+ data = yaffs_get_temp_buffer(dev);
+ }
+ }
+
+ if (dev->param.inband_tags || (data && !tags))
+ retval = dev->drv.drv_read_chunk_fn(dev, nand_chunk,
+ data, dev->param.total_bytes_per_chunk,
+ NULL, 0,
+ &ecc_result);
+ else if (tags)
+ retval = dev->drv.drv_read_chunk_fn(dev, nand_chunk,
+ data, dev->param.total_bytes_per_chunk,
+ spare_buffer, packed_tags_size,
+ &ecc_result);
+ else
+ BUG();
+
+
+ if (dev->param.inband_tags) {
+ if (tags) {
+ struct yaffs_packed_tags2_tags_only *pt2tp;
+ pt2tp =
+ (struct yaffs_packed_tags2_tags_only *)
+ &data[dev->data_bytes_per_chunk];
+ yaffs_unpack_tags2_tags_only(tags, pt2tp);
+ }
+ } else if (tags) {
+ memcpy(packed_tags_ptr, spare_buffer, packed_tags_size);
+ yaffs_unpack_tags2(tags, &pt, !dev->param.no_tags_ecc);
+ }
+
+ if (local_data)
+ yaffs_release_temp_buffer(dev, data);
+
+ if (tags && ecc_result == YAFFS_ECC_RESULT_UNFIXED) {
+ tags->ecc_result = YAFFS_ECC_RESULT_UNFIXED;
+ dev->n_ecc_unfixed++;
+ }
+
+ if (tags && ecc_result == -YAFFS_ECC_RESULT_FIXED) {
+ if (tags->ecc_result <= YAFFS_ECC_RESULT_NO_ERROR)
+ tags->ecc_result = YAFFS_ECC_RESULT_FIXED;
+ dev->n_ecc_fixed++;
+ }
+
+ if (ecc_result < YAFFS_ECC_RESULT_UNFIXED)
+ return YAFFS_OK;
+ else
+ return YAFFS_FAIL;
+}
+
+static int yaffs_tags_marshall_query_block(struct yaffs_dev *dev, int block_no,
+ enum yaffs_block_state *state,
+ u32 *seq_number)
+{
+ int retval;
+
+ yaffs_trace(YAFFS_TRACE_MTD, "yaffs_tags_marshall_query_block %d",
+ block_no);
+
+ retval = dev->drv.drv_check_bad_fn(dev, block_no);
+
+ if (retval== YAFFS_FAIL) {
+ yaffs_trace(YAFFS_TRACE_MTD, "block is bad");
+
+ *state = YAFFS_BLOCK_STATE_DEAD;
+ *seq_number = 0;
+ } else {
+ struct yaffs_ext_tags t;
+
+ yaffs_tags_marshall_read(dev,
+ block_no * dev->param.chunks_per_block,
+ NULL, &t);
+
+ if (t.chunk_used) {
+ *seq_number = t.seq_number;
+ *state = YAFFS_BLOCK_STATE_NEEDS_SCAN;
+ } else {
+ *seq_number = 0;
+ *state = YAFFS_BLOCK_STATE_EMPTY;
+ }
+ }
+
+ yaffs_trace(YAFFS_TRACE_MTD,
+ "block query returns seq %d state %d",
+ *seq_number, *state);
+
+ if (retval == 0)
+ return YAFFS_OK;
+ else
+ return YAFFS_FAIL;
+}
+
+static int yaffs_tags_marshall_mark_bad(struct yaffs_dev *dev, int block_no)
+{
+ return dev->drv.drv_mark_bad_fn(dev, block_no);
+
+}
+
+
+void yaffs_tags_marshall_install(struct yaffs_dev *dev)
+{
+ if (!dev->param.is_yaffs2)
+ return;
+
+ if (!dev->tagger.write_chunk_tags_fn)
+ dev->tagger.write_chunk_tags_fn = yaffs_tags_marshall_write;
+
+ if (!dev->tagger.read_chunk_tags_fn)
+ dev->tagger.read_chunk_tags_fn = yaffs_tags_marshall_read;
+
+ if (!dev->tagger.query_block_fn)
+ dev->tagger.query_block_fn = yaffs_tags_marshall_query_block;
+
+ if (!dev->tagger.mark_bad_fn)
+ dev->tagger.mark_bad_fn = yaffs_tags_marshall_mark_bad;
+
+}
diff --git a/target/linux/generic/files/fs/yaffs2/yaffsinterface.h b/target/linux/generic/files/fs/yaffs2/yaffs_tagsmarshall.h
index 62694d8..bf3e68a 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffsinterface.h
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_tagsmarshall.h
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet another Flash File System . A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -13,9 +13,10 @@
* Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
*/
-#ifndef __YAFFSINTERFACE_H__
-#define __YAFFSINTERFACE_H__
+#ifndef __YAFFS_TAGSMARSHALL_H__
+#define __YAFFS_TAGSMARSHALL_H__
-int yaffs_initialise(unsigned nBlocks);
+#include "yaffs_guts.h"
+void yaffs_tags_marshall_install(struct yaffs_dev *dev);
#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.c b/target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.c
deleted file mode 100644
index 787cdba..0000000
--- a/target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.c
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
- *
- * Copyright (C) 2002-2010 Aleph One Ltd.
- * for Toby Churchill Ltd and Brightstar Engineering
- *
- * Created by Charles Manning <charles@aleph1.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include "yaffs_tagsvalidity.h"
-
-void yaffs_init_tags(yaffs_ext_tags *tags)
-{
- memset(tags, 0, sizeof(yaffs_ext_tags));
- tags->validity1 = 0xAAAAAAAA;
- tags->validty1 = 0x55555555;
-}
-
-int yaffs_validate_tags(yaffs_ext_tags *tags)
-{
- return (tags->validity1 == 0xAAAAAAAA &&
- tags->validty1 == 0x55555555);
-
-}
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.h b/target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.h
deleted file mode 100644
index 085056c..0000000
--- a/target/linux/generic/files/fs/yaffs2/yaffs_tagsvalidity.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
- *
- * Copyright (C) 2002-2010 Aleph One Ltd.
- * for Toby Churchill Ltd and Brightstar Engineering
- *
- * Created by Charles Manning <charles@aleph1.co.uk>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 2.1 as
- * published by the Free Software Foundation.
- *
- * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
- */
-
-
-#ifndef __YAFFS_TAGS_VALIDITY_H__
-#define __YAFFS_TAGS_VALIDITY_H__
-
-#include "yaffs_guts.h"
-
-void yaffs_init_tags(yaffs_ext_tags *tags);
-int yaffs_validate_tags(yaffs_ext_tags *tags);
-#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_trace.h b/target/linux/generic/files/fs/yaffs2/yaffs_trace.h
index 9fe7214..fd26054 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_trace.h
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_trace.h
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet another Flash File System . A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -13,7 +13,6 @@
* Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
*/
-
#ifndef __YTRACE_H__
#define __YTRACE_H__
@@ -44,17 +43,15 @@ extern unsigned int yaffs_wr_attempts;
#define YAFFS_TRACE_VERIFY 0x00010000
#define YAFFS_TRACE_VERIFY_NAND 0x00020000
#define YAFFS_TRACE_VERIFY_FULL 0x00040000
-#define YAFFS_TRACE_VERIFY_ALL 0x000F0000
+#define YAFFS_TRACE_VERIFY_ALL 0x000f0000
#define YAFFS_TRACE_SYNC 0x00100000
#define YAFFS_TRACE_BACKGROUND 0x00200000
#define YAFFS_TRACE_LOCK 0x00400000
+#define YAFFS_TRACE_MOUNT 0x00800000
#define YAFFS_TRACE_ERROR 0x40000000
#define YAFFS_TRACE_BUG 0x80000000
-#define YAFFS_TRACE_ALWAYS 0xF0000000
-
-
-#define T(mask, p) do { if ((mask) & (yaffs_trace_mask | YAFFS_TRACE_ALWAYS)) TOUT(p); } while (0)
+#define YAFFS_TRACE_ALWAYS 0xf0000000
#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_verify.c b/target/linux/generic/files/fs/yaffs2/yaffs_verify.c
index 39d16e6..e8f2f0a 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_verify.c
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_verify.c
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -11,271 +11,229 @@
* published by the Free Software Foundation.
*/
-
#include "yaffs_verify.h"
#include "yaffs_trace.h"
#include "yaffs_bitmap.h"
#include "yaffs_getblockinfo.h"
#include "yaffs_nand.h"
-int yaffs_skip_verification(yaffs_dev_t *dev)
+int yaffs_skip_verification(struct yaffs_dev *dev)
{
- dev=dev;
- return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL));
+ (void) dev;
+ return !(yaffs_trace_mask &
+ (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL));
}
-static int yaffs_skip_full_verification(yaffs_dev_t *dev)
+static int yaffs_skip_full_verification(struct yaffs_dev *dev)
{
- dev=dev;
+ (void) dev;
return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY_FULL));
}
-static int yaffs_skip_nand_verification(yaffs_dev_t *dev)
+static int yaffs_skip_nand_verification(struct yaffs_dev *dev)
{
- dev=dev;
+ (void) dev;
return !(yaffs_trace_mask & (YAFFS_TRACE_VERIFY_NAND));
}
-
-static const char *block_stateName[] = {
-"Unknown",
-"Needs scanning",
-"Scanning",
-"Empty",
-"Allocating",
-"Full",
-"Dirty",
-"Checkpoint",
-"Collecting",
-"Dead"
+static const char * const block_state_name[] = {
+ "Unknown",
+ "Needs scan",
+ "Scanning",
+ "Empty",
+ "Allocating",
+ "Full",
+ "Dirty",
+ "Checkpoint",
+ "Collecting",
+ "Dead"
};
-
-void yaffs_verify_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n)
+void yaffs_verify_blk(struct yaffs_dev *dev, struct yaffs_block_info *bi, int n)
{
- int actuallyUsed;
- int inUse;
+ int actually_used;
+ int in_use;
if (yaffs_skip_verification(dev))
return;
/* Report illegal runtime states */
if (bi->block_state >= YAFFS_NUMBER_OF_BLOCK_STATES)
- T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has undefined state %d"TENDSTR), n, bi->block_state));
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "Block %d has undefined state %d",
+ n, bi->block_state);
switch (bi->block_state) {
case YAFFS_BLOCK_STATE_UNKNOWN:
case YAFFS_BLOCK_STATE_SCANNING:
- case YAFFS_BLOCK_STATE_NEEDS_SCANNING:
- T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has bad run-state %s"TENDSTR),
- n, block_stateName[bi->block_state]));
+ case YAFFS_BLOCK_STATE_NEEDS_SCAN:
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "Block %d has bad run-state %s",
+ n, block_state_name[bi->block_state]);
}
/* Check pages in use and soft deletions are legal */
- actuallyUsed = bi->pages_in_use - bi->soft_del_pages;
-
- if (bi->pages_in_use < 0 || bi->pages_in_use > dev->param.chunks_per_block ||
- bi->soft_del_pages < 0 || bi->soft_del_pages > dev->param.chunks_per_block ||
- actuallyUsed < 0 || actuallyUsed > dev->param.chunks_per_block)
- T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has illegal values pages_in_used %d soft_del_pages %d"TENDSTR),
- n, bi->pages_in_use, bi->soft_del_pages));
+ actually_used = bi->pages_in_use - bi->soft_del_pages;
+ if (bi->pages_in_use < 0 ||
+ bi->pages_in_use > dev->param.chunks_per_block ||
+ bi->soft_del_pages < 0 ||
+ bi->soft_del_pages > dev->param.chunks_per_block ||
+ actually_used < 0 || actually_used > dev->param.chunks_per_block)
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "Block %d has illegal values pages_in_used %d soft_del_pages %d",
+ n, bi->pages_in_use, bi->soft_del_pages);
/* Check chunk bitmap legal */
- inUse = yaffs_count_chunk_bits(dev, n);
- if (inUse != bi->pages_in_use)
- T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has inconsistent values pages_in_use %d counted chunk bits %d"TENDSTR),
- n, bi->pages_in_use, inUse));
-
+ in_use = yaffs_count_chunk_bits(dev, n);
+ if (in_use != bi->pages_in_use)
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "Block %d has inconsistent values pages_in_use %d counted chunk bits %d",
+ n, bi->pages_in_use, in_use);
}
-
-
-void yaffs_verify_collected_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n)
+void yaffs_verify_collected_blk(struct yaffs_dev *dev,
+ struct yaffs_block_info *bi, int n)
{
yaffs_verify_blk(dev, bi, n);
/* After collection the block should be in the erased state */
if (bi->block_state != YAFFS_BLOCK_STATE_COLLECTING &&
- bi->block_state != YAFFS_BLOCK_STATE_EMPTY) {
- T(YAFFS_TRACE_ERROR, (TSTR("Block %d is in state %d after gc, should be erased"TENDSTR),
- n, bi->block_state));
+ bi->block_state != YAFFS_BLOCK_STATE_EMPTY) {
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "Block %d is in state %d after gc, should be erased",
+ n, bi->block_state);
}
}
-void yaffs_verify_blocks(yaffs_dev_t *dev)
+void yaffs_verify_blocks(struct yaffs_dev *dev)
{
int i;
- int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES];
- int nIllegalBlockStates = 0;
+ int state_count[YAFFS_NUMBER_OF_BLOCK_STATES];
+ int illegal_states = 0;
if (yaffs_skip_verification(dev))
return;
- memset(nBlocksPerState, 0, sizeof(nBlocksPerState));
+ memset(state_count, 0, sizeof(state_count));
for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) {
- yaffs_block_info_t *bi = yaffs_get_block_info(dev, i);
+ struct yaffs_block_info *bi = yaffs_get_block_info(dev, i);
yaffs_verify_blk(dev, bi, i);
if (bi->block_state < YAFFS_NUMBER_OF_BLOCK_STATES)
- nBlocksPerState[bi->block_state]++;
+ state_count[bi->block_state]++;
else
- nIllegalBlockStates++;
+ illegal_states++;
}
- T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR)));
- T(YAFFS_TRACE_VERIFY, (TSTR("Block summary"TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_VERIFY, "Block summary");
- T(YAFFS_TRACE_VERIFY, (TSTR("%d blocks have illegal states"TENDSTR), nIllegalBlockStates));
- if (nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1)
- T(YAFFS_TRACE_VERIFY, (TSTR("Too many allocating blocks"TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "%d blocks have illegal states",
+ illegal_states);
+ if (state_count[YAFFS_BLOCK_STATE_ALLOCATING] > 1)
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "Too many allocating blocks");
for (i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++)
- T(YAFFS_TRACE_VERIFY,
- (TSTR("%s %d blocks"TENDSTR),
- block_stateName[i], nBlocksPerState[i]));
-
- if (dev->blocks_in_checkpt != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])
- T(YAFFS_TRACE_VERIFY,
- (TSTR("Checkpoint block count wrong dev %d count %d"TENDSTR),
- dev->blocks_in_checkpt, nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT]));
-
- if (dev->n_erased_blocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])
- T(YAFFS_TRACE_VERIFY,
- (TSTR("Erased block count wrong dev %d count %d"TENDSTR),
- dev->n_erased_blocks, nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY]));
-
- if (nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1)
- T(YAFFS_TRACE_VERIFY,
- (TSTR("Too many collecting blocks %d (max is 1)"TENDSTR),
- nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING]));
-
- T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR)));
-
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "%s %d blocks",
+ block_state_name[i], state_count[i]);
+
+ if (dev->blocks_in_checkpt != state_count[YAFFS_BLOCK_STATE_CHECKPOINT])
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "Checkpoint block count wrong dev %d count %d",
+ dev->blocks_in_checkpt,
+ state_count[YAFFS_BLOCK_STATE_CHECKPOINT]);
+
+ if (dev->n_erased_blocks != state_count[YAFFS_BLOCK_STATE_EMPTY])
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "Erased block count wrong dev %d count %d",
+ dev->n_erased_blocks,
+ state_count[YAFFS_BLOCK_STATE_EMPTY]);
+
+ if (state_count[YAFFS_BLOCK_STATE_COLLECTING] > 1)
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "Too many collecting blocks %d (max is 1)",
+ state_count[YAFFS_BLOCK_STATE_COLLECTING]);
}
/*
- * Verify the object header. oh must be valid, but obj and tags may be NULL in which
- * case those tests will not be performed.
+ * Verify the object header. oh must be valid, but obj and tags may be NULL in
+ * which case those tests will not be performed.
*/
-void yaffs_verify_oh(yaffs_obj_t *obj, yaffs_obj_header *oh, yaffs_ext_tags *tags, int parentCheck)
+void yaffs_verify_oh(struct yaffs_obj *obj, struct yaffs_obj_hdr *oh,
+ struct yaffs_ext_tags *tags, int parent_check)
{
if (obj && yaffs_skip_verification(obj->my_dev))
return;
if (!(tags && obj && oh)) {
- T(YAFFS_TRACE_VERIFY,
- (TSTR("Verifying object header tags %p obj %p oh %p"TENDSTR),
- tags, obj, oh));
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "Verifying object header tags %p obj %p oh %p",
+ tags, obj, oh);
return;
}
if (oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN ||
- oh->type > YAFFS_OBJECT_TYPE_MAX)
- T(YAFFS_TRACE_VERIFY,
- (TSTR("Obj %d header type is illegal value 0x%x"TENDSTR),
- tags->obj_id, oh->type));
+ oh->type > YAFFS_OBJECT_TYPE_MAX)
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "Obj %d header type is illegal value 0x%x",
+ tags->obj_id, oh->type);
if (tags->obj_id != obj->obj_id)
- T(YAFFS_TRACE_VERIFY,
- (TSTR("Obj %d header mismatch obj_id %d"TENDSTR),
- tags->obj_id, obj->obj_id));
-
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "Obj %d header mismatch obj_id %d",
+ tags->obj_id, obj->obj_id);
/*
- * Check that the object's parent ids match if parentCheck requested.
+ * Check that the object's parent ids match if parent_check requested.
*
* Tests do not apply to the root object.
*/
- if (parentCheck && tags->obj_id > 1 && !obj->parent)
- T(YAFFS_TRACE_VERIFY,
- (TSTR("Obj %d header mismatch parent_id %d obj->parent is NULL"TENDSTR),
- tags->obj_id, oh->parent_obj_id));
-
- if (parentCheck && obj->parent &&
- oh->parent_obj_id != obj->parent->obj_id &&
- (oh->parent_obj_id != YAFFS_OBJECTID_UNLINKED ||
- obj->parent->obj_id != YAFFS_OBJECTID_DELETED))
- T(YAFFS_TRACE_VERIFY,
- (TSTR("Obj %d header mismatch parent_id %d parent_obj_id %d"TENDSTR),
- tags->obj_id, oh->parent_obj_id, obj->parent->obj_id));
-
- if (tags->obj_id > 1 && oh->name[0] == 0) /* Null name */
- T(YAFFS_TRACE_VERIFY,
- (TSTR("Obj %d header name is NULL"TENDSTR),
- obj->obj_id));
-
- if (tags->obj_id > 1 && ((__u8)(oh->name[0])) == 0xff) /* Trashed name */
- T(YAFFS_TRACE_VERIFY,
- (TSTR("Obj %d header name is 0xFF"TENDSTR),
- obj->obj_id));
+ if (parent_check && tags->obj_id > 1 && !obj->parent)
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "Obj %d header mismatch parent_id %d obj->parent is NULL",
+ tags->obj_id, oh->parent_obj_id);
+
+ if (parent_check && obj->parent &&
+ oh->parent_obj_id != obj->parent->obj_id &&
+ (oh->parent_obj_id != YAFFS_OBJECTID_UNLINKED ||
+ obj->parent->obj_id != YAFFS_OBJECTID_DELETED))
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "Obj %d header mismatch parent_id %d parent_obj_id %d",
+ tags->obj_id, oh->parent_obj_id,
+ obj->parent->obj_id);
+
+ if (tags->obj_id > 1 && oh->name[0] == 0) /* Null name */
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "Obj %d header name is NULL",
+ obj->obj_id);
+
+ if (tags->obj_id > 1 && ((u8) (oh->name[0])) == 0xff) /* Junk name */
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "Obj %d header name is 0xff",
+ obj->obj_id);
}
-
-#if 0
-/* Not being used, but don't want to throw away yet */
-int yaffs_verify_tnode_worker(yaffs_obj_t *obj, yaffs_tnode_t *tn,
- __u32 level, int chunk_offset)
+void yaffs_verify_file(struct yaffs_obj *obj)
{
- int i;
- yaffs_dev_t *dev = obj->my_dev;
- int ok = 1;
-
- if (tn) {
- if (level > 0) {
-
- for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) {
- if (tn->internal[i]) {
- ok = yaffs_verify_tnode_worker(obj,
- tn->internal[i],
- level - 1,
- (chunk_offset<<YAFFS_TNODES_INTERNAL_BITS) + i);
- }
- }
- } else if (level == 0) {
- yaffs_ext_tags tags;
- __u32 obj_id = obj->obj_id;
-
- chunk_offset <<= YAFFS_TNODES_LEVEL0_BITS;
-
- for (i = 0; i < YAFFS_NTNODES_LEVEL0; i++) {
- __u32 theChunk = yaffs_get_group_base(dev, tn, i);
-
- if (theChunk > 0) {
- /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),tags.obj_id,tags.chunk_id,theChunk)); */
- yaffs_rd_chunk_tags_nand(dev, theChunk, NULL, &tags);
- if (tags.obj_id != obj_id || tags.chunk_id != chunk_offset) {
- T(~0, (TSTR("Object %d chunk_id %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
- obj_id, chunk_offset, theChunk,
- tags.obj_id, tags.chunk_id));
- }
- }
- chunk_offset++;
- }
- }
- }
-
- return ok;
-
-}
-
-#endif
-
-void yaffs_verify_file(yaffs_obj_t *obj)
-{
- int requiredTallness;
- int actualTallness;
- __u32 lastChunk;
- __u32 x;
- __u32 i;
- yaffs_dev_t *dev;
- yaffs_ext_tags tags;
- yaffs_tnode_t *tn;
- __u32 obj_id;
+ u32 x;
+ int required_depth;
+ int actual_depth;
+ int last_chunk;
+ u32 offset_in_chunk;
+ u32 the_chunk;
+
+ u32 i;
+ struct yaffs_dev *dev;
+ struct yaffs_ext_tags tags;
+ struct yaffs_tnode *tn;
+ u32 obj_id;
if (!obj)
return;
@@ -286,16 +244,19 @@ void yaffs_verify_file(yaffs_obj_t *obj)
dev = obj->my_dev;
obj_id = obj->obj_id;
+
/* Check file size is consistent with tnode depth */
- lastChunk = obj->variant.file_variant.file_size / dev->data_bytes_per_chunk + 1;
- x = lastChunk >> YAFFS_TNODES_LEVEL0_BITS;
- requiredTallness = 0;
+ yaffs_addr_to_chunk(dev, obj->variant.file_variant.file_size,
+ &last_chunk, &offset_in_chunk);
+ last_chunk++;
+ x = last_chunk >> YAFFS_TNODES_LEVEL0_BITS;
+ required_depth = 0;
while (x > 0) {
x >>= YAFFS_TNODES_INTERNAL_BITS;
- requiredTallness++;
+ required_depth++;
}
- actualTallness = obj->variant.file_variant.top_level;
+ actual_depth = obj->variant.file_variant.top_level;
/* Check that the chunks in the tnode tree are all correct.
* We do this by scanning through the tnode tree and
@@ -305,26 +266,26 @@ void yaffs_verify_file(yaffs_obj_t *obj)
if (yaffs_skip_nand_verification(dev))
return;
- for (i = 1; i <= lastChunk; i++) {
+ for (i = 1; i <= last_chunk; i++) {
tn = yaffs_find_tnode_0(dev, &obj->variant.file_variant, i);
- if (tn) {
- __u32 theChunk = yaffs_get_group_base(dev, tn, i);
- if (theChunk > 0) {
- /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),obj_id,i,theChunk)); */
- yaffs_rd_chunk_tags_nand(dev, theChunk, NULL, &tags);
- if (tags.obj_id != obj_id || tags.chunk_id != i) {
- T(~0, (TSTR("Object %d chunk_id %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
- obj_id, i, theChunk,
- tags.obj_id, tags.chunk_id));
- }
- }
+ if (!tn)
+ continue;
+
+ the_chunk = yaffs_get_group_base(dev, tn, i);
+ if (the_chunk > 0) {
+ yaffs_rd_chunk_tags_nand(dev, the_chunk, NULL,
+ &tags);
+ if (tags.obj_id != obj_id || tags.chunk_id != i)
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "Object %d chunk_id %d NAND mismatch chunk %d tags (%d:%d)",
+ obj_id, i, the_chunk,
+ tags.obj_id, tags.chunk_id);
}
}
}
-
-void yaffs_verify_link(yaffs_obj_t *obj)
+void yaffs_verify_link(struct yaffs_obj *obj)
{
if (obj && yaffs_skip_verification(obj->my_dev))
return;
@@ -332,7 +293,7 @@ void yaffs_verify_link(yaffs_obj_t *obj)
/* Verify sane equivalent object */
}
-void yaffs_verify_symlink(yaffs_obj_t *obj)
+void yaffs_verify_symlink(struct yaffs_obj *obj)
{
if (obj && yaffs_skip_verification(obj->my_dev))
return;
@@ -340,23 +301,21 @@ void yaffs_verify_symlink(yaffs_obj_t *obj)
/* Verify symlink string */
}
-void yaffs_verify_special(yaffs_obj_t *obj)
+void yaffs_verify_special(struct yaffs_obj *obj)
{
if (obj && yaffs_skip_verification(obj->my_dev))
return;
}
-void yaffs_verify_obj(yaffs_obj_t *obj)
+void yaffs_verify_obj(struct yaffs_obj *obj)
{
- yaffs_dev_t *dev;
-
- __u32 chunkMin;
- __u32 chunkMax;
-
- __u32 chunk_idOk;
- __u32 chunkInRange;
- __u32 chunkShouldNotBeDeleted;
- __u32 chunkValid;
+ struct yaffs_dev *dev;
+ u32 chunk_min;
+ u32 chunk_max;
+ u32 chunk_id_ok;
+ u32 chunk_in_range;
+ u32 chunk_wrongly_deleted;
+ u32 chunk_valid;
if (!obj)
return;
@@ -371,54 +330,53 @@ void yaffs_verify_obj(yaffs_obj_t *obj)
/* Check sane object header chunk */
- chunkMin = dev->internal_start_block * dev->param.chunks_per_block;
- chunkMax = (dev->internal_end_block+1) * dev->param.chunks_per_block - 1;
-
- chunkInRange = (((unsigned)(obj->hdr_chunk)) >= chunkMin && ((unsigned)(obj->hdr_chunk)) <= chunkMax);
- chunk_idOk = chunkInRange || (obj->hdr_chunk == 0);
- chunkValid = chunkInRange &&
- yaffs_check_chunk_bit(dev,
- obj->hdr_chunk / dev->param.chunks_per_block,
- obj->hdr_chunk % dev->param.chunks_per_block);
- chunkShouldNotBeDeleted = chunkInRange && !chunkValid;
-
- if (!obj->fake &&
- (!chunk_idOk || chunkShouldNotBeDeleted)) {
- T(YAFFS_TRACE_VERIFY,
- (TSTR("Obj %d has chunk_id %d %s %s"TENDSTR),
+ chunk_min = dev->internal_start_block * dev->param.chunks_per_block;
+ chunk_max =
+ (dev->internal_end_block + 1) * dev->param.chunks_per_block - 1;
+
+ chunk_in_range = (((unsigned)(obj->hdr_chunk)) >= chunk_min &&
+ ((unsigned)(obj->hdr_chunk)) <= chunk_max);
+ chunk_id_ok = chunk_in_range || (obj->hdr_chunk == 0);
+ chunk_valid = chunk_in_range &&
+ yaffs_check_chunk_bit(dev,
+ obj->hdr_chunk / dev->param.chunks_per_block,
+ obj->hdr_chunk % dev->param.chunks_per_block);
+ chunk_wrongly_deleted = chunk_in_range && !chunk_valid;
+
+ if (!obj->fake && (!chunk_id_ok || chunk_wrongly_deleted))
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "Obj %d has chunk_id %d %s %s",
obj->obj_id, obj->hdr_chunk,
- chunk_idOk ? "" : ",out of range",
- chunkShouldNotBeDeleted ? ",marked as deleted" : ""));
- }
+ chunk_id_ok ? "" : ",out of range",
+ chunk_wrongly_deleted ? ",marked as deleted" : "");
- if (chunkValid && !yaffs_skip_nand_verification(dev)) {
- yaffs_ext_tags tags;
- yaffs_obj_header *oh;
- __u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__);
+ if (chunk_valid && !yaffs_skip_nand_verification(dev)) {
+ struct yaffs_ext_tags tags;
+ struct yaffs_obj_hdr *oh;
+ u8 *buffer = yaffs_get_temp_buffer(dev);
- oh = (yaffs_obj_header *)buffer;
+ oh = (struct yaffs_obj_hdr *)buffer;
- yaffs_rd_chunk_tags_nand(dev, obj->hdr_chunk, buffer,
- &tags);
+ yaffs_rd_chunk_tags_nand(dev, obj->hdr_chunk, buffer, &tags);
yaffs_verify_oh(obj, oh, &tags, 1);
- yaffs_release_temp_buffer(dev, buffer, __LINE__);
+ yaffs_release_temp_buffer(dev, buffer);
}
/* Verify it has a parent */
- if (obj && !obj->fake &&
- (!obj->parent || obj->parent->my_dev != dev)) {
- T(YAFFS_TRACE_VERIFY,
- (TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR),
- obj->obj_id, obj->parent));
+ if (obj && !obj->fake && (!obj->parent || obj->parent->my_dev != dev)) {
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "Obj %d has parent pointer %p which does not look like an object",
+ obj->obj_id, obj->parent);
}
/* Verify parent is a directory */
- if (obj->parent && obj->parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
- T(YAFFS_TRACE_VERIFY,
- (TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR),
- obj->obj_id, obj->parent->variant_type));
+ if (obj->parent &&
+ obj->parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "Obj %d's parent is not a directory (type %d)",
+ obj->obj_id, obj->parent->variant_type);
}
switch (obj->variant_type) {
@@ -439,45 +397,41 @@ void yaffs_verify_obj(yaffs_obj_t *obj)
break;
case YAFFS_OBJECT_TYPE_UNKNOWN:
default:
- T(YAFFS_TRACE_VERIFY,
- (TSTR("Obj %d has illegaltype %d"TENDSTR),
- obj->obj_id, obj->variant_type));
+ yaffs_trace(YAFFS_TRACE_VERIFY,
+ "Obj %d has illegaltype %d",
+ obj->obj_id, obj->variant_type);
break;
}
}
-void yaffs_verify_objects(yaffs_dev_t *dev)
+void yaffs_verify_objects(struct yaffs_dev *dev)
{
- yaffs_obj_t *obj;
+ struct yaffs_obj *obj;
int i;
- struct ylist_head *lh;
+ struct list_head *lh;
if (yaffs_skip_verification(dev))
return;
/* Iterate through the objects in each hash entry */
- for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) {
- ylist_for_each(lh, &dev->obj_bucket[i].list) {
- if (lh) {
- obj = ylist_entry(lh, yaffs_obj_t, hash_link);
- yaffs_verify_obj(obj);
- }
+ for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) {
+ list_for_each(lh, &dev->obj_bucket[i].list) {
+ obj = list_entry(lh, struct yaffs_obj, hash_link);
+ yaffs_verify_obj(obj);
}
}
}
-
-void yaffs_verify_obj_in_dir(yaffs_obj_t *obj)
+void yaffs_verify_obj_in_dir(struct yaffs_obj *obj)
{
- struct ylist_head *lh;
- yaffs_obj_t *listObj;
-
+ struct list_head *lh;
+ struct yaffs_obj *list_obj;
int count = 0;
if (!obj) {
- T(YAFFS_TRACE_ALWAYS, (TSTR("No object to verify" TENDSTR)));
- YBUG();
+ yaffs_trace(YAFFS_TRACE_ALWAYS, "No object to verify");
+ BUG();
return;
}
@@ -485,40 +439,40 @@ void yaffs_verify_obj_in_dir(yaffs_obj_t *obj)
return;
if (!obj->parent) {
- T(YAFFS_TRACE_ALWAYS, (TSTR("Object does not have parent" TENDSTR)));
- YBUG();
+ yaffs_trace(YAFFS_TRACE_ALWAYS, "Object does not have parent");
+ BUG();
return;
}
if (obj->parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
- T(YAFFS_TRACE_ALWAYS, (TSTR("Parent is not directory" TENDSTR)));
- YBUG();
+ yaffs_trace(YAFFS_TRACE_ALWAYS, "Parent is not directory");
+ BUG();
}
/* Iterate through the objects in each hash entry */
- ylist_for_each(lh, &obj->parent->variant.dir_variant.children) {
- if (lh) {
- listObj = ylist_entry(lh, yaffs_obj_t, siblings);
- yaffs_verify_obj(listObj);
- if (obj == listObj)
- count++;
- }
- }
+ list_for_each(lh, &obj->parent->variant.dir_variant.children) {
+ list_obj = list_entry(lh, struct yaffs_obj, siblings);
+ yaffs_verify_obj(list_obj);
+ if (obj == list_obj)
+ count++;
+ }
if (count != 1) {
- T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory %d times" TENDSTR), count));
- YBUG();
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "Object in directory %d times",
+ count);
+ BUG();
}
}
-void yaffs_verify_dir(yaffs_obj_t *directory)
+void yaffs_verify_dir(struct yaffs_obj *directory)
{
- struct ylist_head *lh;
- yaffs_obj_t *listObj;
+ struct list_head *lh;
+ struct yaffs_obj *list_obj;
if (!directory) {
- YBUG();
+ BUG();
return;
}
@@ -526,27 +480,29 @@ void yaffs_verify_dir(yaffs_obj_t *directory)
return;
if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
- T(YAFFS_TRACE_ALWAYS, (TSTR("Directory has wrong type: %d" TENDSTR), directory->variant_type));
- YBUG();
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "Directory has wrong type: %d",
+ directory->variant_type);
+ BUG();
}
/* Iterate through the objects in each hash entry */
- ylist_for_each(lh, &directory->variant.dir_variant.children) {
- if (lh) {
- listObj = ylist_entry(lh, yaffs_obj_t, siblings);
- if (listObj->parent != directory) {
- T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory list has wrong parent %p" TENDSTR), listObj->parent));
- YBUG();
- }
- yaffs_verify_obj_in_dir(listObj);
+ list_for_each(lh, &directory->variant.dir_variant.children) {
+ list_obj = list_entry(lh, struct yaffs_obj, siblings);
+ if (list_obj->parent != directory) {
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "Object in directory list has wrong parent %p",
+ list_obj->parent);
+ BUG();
}
+ yaffs_verify_obj_in_dir(list_obj);
}
}
static int yaffs_free_verification_failures;
-void yaffs_verify_free_chunks(yaffs_dev_t *dev)
+void yaffs_verify_free_chunks(struct yaffs_dev *dev)
{
int counted;
int difference;
@@ -559,68 +515,15 @@ void yaffs_verify_free_chunks(yaffs_dev_t *dev)
difference = dev->n_free_chunks - counted;
if (difference) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("Freechunks verification failure %d %d %d" TENDSTR),
- dev->n_free_chunks, counted, difference));
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "Freechunks verification failure %d %d %d",
+ dev->n_free_chunks, counted, difference);
yaffs_free_verification_failures++;
}
}
-int yaffs_verify_file_sane(yaffs_obj_t *in)
+int yaffs_verify_file_sane(struct yaffs_obj *in)
{
-#if 0
- int chunk;
- int n_chunks;
- int fSize;
- int failed = 0;
- int obj_id;
- yaffs_tnode_t *tn;
- yaffs_tags_t localTags;
- yaffs_tags_t *tags = &localTags;
- int theChunk;
- int is_deleted;
-
- if (in->variant_type != YAFFS_OBJECT_TYPE_FILE)
- return YAFFS_FAIL;
-
- obj_id = in->obj_id;
- fSize = in->variant.file_variant.file_size;
- n_chunks =
- (fSize + in->my_dev->data_bytes_per_chunk - 1) / in->my_dev->data_bytes_per_chunk;
-
- for (chunk = 1; chunk <= n_chunks; chunk++) {
- tn = yaffs_find_tnode_0(in->my_dev, &in->variant.file_variant,
- chunk);
-
- if (tn) {
-
- theChunk = yaffs_get_group_base(dev, tn, chunk);
-
- if (yaffs_check_chunk_bits
- (dev, theChunk / dev->param.chunks_per_block,
- theChunk % dev->param.chunks_per_block)) {
-
- yaffs_rd_chunk_tags_nand(in->my_dev, theChunk,
- tags,
- &is_deleted);
- if (yaffs_tags_match
- (tags, in->obj_id, chunk, is_deleted)) {
- /* found it; */
-
- }
- } else {
-
- failed = 1;
- }
-
- } else {
- /* T(("No level 0 found for %d\n", chunk)); */
- }
- }
-
- return failed ? YAFFS_FAIL : YAFFS_OK;
-#else
- in=in;
+ (void) in;
return YAFFS_OK;
-#endif
}
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_verify.h b/target/linux/generic/files/fs/yaffs2/yaffs_verify.h
index 5ec808a..4f4af8d 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_verify.h
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_verify.h
@@ -1,14 +1,16 @@
/*
- * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
*
* This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
+ * it under the terms of the GNU Lesser General Public License version 2.1 as
* published by the Free Software Foundation.
+ *
+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
*/
#ifndef __YAFFS_VERIFY_H__
@@ -16,24 +18,26 @@
#include "yaffs_guts.h"
-void yaffs_verify_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n);
-void yaffs_verify_collected_blk(yaffs_dev_t *dev, yaffs_block_info_t *bi, int n);
-void yaffs_verify_blocks(yaffs_dev_t *dev);
+void yaffs_verify_blk(struct yaffs_dev *dev, struct yaffs_block_info *bi,
+ int n);
+void yaffs_verify_collected_blk(struct yaffs_dev *dev,
+ struct yaffs_block_info *bi, int n);
+void yaffs_verify_blocks(struct yaffs_dev *dev);
-void yaffs_verify_oh(yaffs_obj_t *obj, yaffs_obj_header *oh, yaffs_ext_tags *tags, int parentCheck);
-void yaffs_verify_file(yaffs_obj_t *obj);
-void yaffs_verify_link(yaffs_obj_t *obj);
-void yaffs_verify_symlink(yaffs_obj_t *obj);
-void yaffs_verify_special(yaffs_obj_t *obj);
-void yaffs_verify_obj(yaffs_obj_t *obj);
-void yaffs_verify_objects(yaffs_dev_t *dev);
-void yaffs_verify_obj_in_dir(yaffs_obj_t *obj);
-void yaffs_verify_dir(yaffs_obj_t *directory);
-void yaffs_verify_free_chunks(yaffs_dev_t *dev);
+void yaffs_verify_oh(struct yaffs_obj *obj, struct yaffs_obj_hdr *oh,
+ struct yaffs_ext_tags *tags, int parent_check);
+void yaffs_verify_file(struct yaffs_obj *obj);
+void yaffs_verify_link(struct yaffs_obj *obj);
+void yaffs_verify_symlink(struct yaffs_obj *obj);
+void yaffs_verify_special(struct yaffs_obj *obj);
+void yaffs_verify_obj(struct yaffs_obj *obj);
+void yaffs_verify_objects(struct yaffs_dev *dev);
+void yaffs_verify_obj_in_dir(struct yaffs_obj *obj);
+void yaffs_verify_dir(struct yaffs_obj *directory);
+void yaffs_verify_free_chunks(struct yaffs_dev *dev);
-int yaffs_verify_file_sane(yaffs_obj_t *obj);
+int yaffs_verify_file_sane(struct yaffs_obj *obj);
-int yaffs_skip_verification(yaffs_dev_t *dev);
+int yaffs_skip_verification(struct yaffs_dev *dev);
#endif
-
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_vfs_glue.c b/target/linux/generic/files/fs/yaffs2/yaffs_vfs.c
index 0f1ecee..67050d4 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_vfs_glue.c
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_vfs.c
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -24,11 +24,11 @@
* the VFS.
*
* Special notes:
- * >> 2.4: sb->u.generic_sbp points to the yaffs_dev_t associated with
+ * >> 2.4: sb->u.generic_sbp points to the struct yaffs_dev associated with
* this superblock
- * >> 2.6: sb->s_fs_info points to the yaffs_dev_t associated with this
+ * >> 2.6: sb->s_fs_info points to the struct yaffs_dev associated with this
* superblock
- * >> inode->u.generic_ip points to the associated yaffs_obj_t.
+ * >> inode->u.generic_ip points to the associated struct yaffs_obj.
*/
/*
@@ -39,29 +39,34 @@
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 10))
#define YAFFS_COMPILE_BACKGROUND
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6, 23))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 23))
#define YAFFS_COMPILE_FREEZER
#endif
#endif
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28))
#define YAFFS_COMPILE_EXPORTFS
#endif
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,35))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 35))
#define YAFFS_USE_SETATTR_COPY
#define YAFFS_USE_TRUNCATE_SETSIZE
#endif
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,35))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 35))
#define YAFFS_HAS_EVICT_INODE
#endif
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13))
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13))
#define YAFFS_NEW_FOLLOW_LINK 1
#else
#define YAFFS_NEW_FOLLOW_LINK 0
#endif
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 6, 0))
+#define YAFFS_HAS_WRITE_SUPER
+#endif
+
+
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19))
#include <linux/config.h>
#endif
@@ -72,7 +77,9 @@
#include <linux/init.h>
#include <linux/fs.h>
#include <linux/proc_fs.h>
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 39))
#include <linux/smp_lock.h>
+#endif
#include <linux/pagemap.h>
#include <linux/mtd/mtd.h>
#include <linux/interrupt.h>
@@ -126,32 +133,33 @@
#define YPROC_ROOT NULL
#endif
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26))
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26))
#define Y_INIT_TIMER(a) init_timer(a)
#else
#define Y_INIT_TIMER(a) init_timer_on_stack(a)
#endif
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
-#define WRITE_SIZE_STR "writesize"
-#define WRITE_SIZE(mtd) ((mtd)->writesize)
-#else
-#define WRITE_SIZE_STR "oobblock"
-#define WRITE_SIZE(mtd) ((mtd)->oobblock)
-#endif
-
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 27))
#define YAFFS_USE_WRITE_BEGIN_END 1
#else
#define YAFFS_USE_WRITE_BEGIN_END 0
#endif
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 6, 0))
+#define YAFFS_SUPER_HAS_DIRTY
+#endif
+
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 2, 0))
+#define set_nlink(inode, count) do { (inode)->i_nlink = (count); } while(0)
+#endif
+
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28))
static uint32_t YCALCBLOCKS(uint64_t partition_size, uint32_t block_size)
{
uint64_t result = partition_size;
do_div(result, block_size);
- return (uint32_t)result;
+ return (uint32_t) result;
}
#else
#define YCALCBLOCKS(s, b) ((s)/(b))
@@ -163,19 +171,24 @@ static uint32_t YCALCBLOCKS(uint64_t partition_size, uint32_t block_size)
#include "yportenv.h"
#include "yaffs_trace.h"
#include "yaffs_guts.h"
+#include "yaffs_attribs.h"
#include "yaffs_linux.h"
#include "yaffs_mtdif.h"
-#include "yaffs_mtdif1.h"
-#include "yaffs_mtdif2.h"
+#include "yaffs_packedtags2.h"
+#include "yaffs_getblockinfo.h"
+
+unsigned int yaffs_trace_mask =
+ YAFFS_TRACE_BAD_BLOCKS |
+ YAFFS_TRACE_ALWAYS |
+ 0;
-unsigned int yaffs_trace_mask = YAFFS_TRACE_BAD_BLOCKS | YAFFS_TRACE_ALWAYS;
unsigned int yaffs_wr_attempts = YAFFS_WR_ATTEMPTS;
unsigned int yaffs_auto_checkpoint = 1;
unsigned int yaffs_gc_control = 1;
unsigned int yaffs_bg_enable = 1;
-
+unsigned int yaffs_auto_select = 1;
/* Module Parameters */
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
module_param(yaffs_trace_mask, uint, 0644);
@@ -193,812 +206,73 @@ MODULE_PARM(yaffs_gc_control, "i");
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25))
/* use iget and read_inode */
#define Y_IGET(sb, inum) iget((sb), (inum))
-static void yaffs_read_inode(struct inode *inode);
#else
/* Call local equivalent */
#define YAFFS_USE_OWN_IGET
#define Y_IGET(sb, inum) yaffs_iget((sb), (inum))
-static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino);
#endif
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18))
-#define yaffs_InodeToObjectLV(iptr) ((iptr)->i_private)
-#else
-#define yaffs_InodeToObjectLV(iptr) ((iptr)->u.generic_ip)
-#endif
-
-#define yaffs_InodeToObject(iptr) ((yaffs_obj_t *)(yaffs_InodeToObjectLV(iptr)))
-#define yaffs_dentry_to_obj(dptr) yaffs_InodeToObject((dptr)->d_inode)
-
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
-#define yaffs_SuperToDevice(sb) ((yaffs_dev_t *)sb->s_fs_info)
-#else
-#define yaffs_SuperToDevice(sb) ((yaffs_dev_t *)sb->u.generic_sbp)
-#endif
-
-
-#define update_dir_time(dir) do {\
- (dir)->i_ctime = (dir)->i_mtime = CURRENT_TIME; \
- } while(0)
-
-static void yaffs_put_super(struct super_block *sb);
-
-static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n,
- loff_t *pos);
-static ssize_t yaffs_hold_space(struct file *f);
-static void yaffs_release_space(struct file *f);
-
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
-static int yaffs_file_flush(struct file *file, fl_owner_t id);
-#else
-static int yaffs_file_flush(struct file *file);
-#endif
-
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34))
-static int yaffs_sync_object(struct file *file, int datasync);
-#else
-static int yaffs_sync_object(struct file *file, struct dentry *dentry,
- int datasync);
-#endif
-
-static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir);
-
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
-static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode,
- struct nameidata *n);
-static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry,
- struct nameidata *n);
-#else
-static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode);
-static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry);
-#endif
-static int yaffs_link(struct dentry *old_dentry, struct inode *dir,
- struct dentry *dentry);
-static int yaffs_unlink(struct inode *dir, struct dentry *dentry);
-static int yaffs_symlink(struct inode *dir, struct dentry *dentry,
- const char *symname);
-static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode);
-
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
-static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
- dev_t dev);
-#else
-static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
- int dev);
-#endif
-static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry,
- struct inode *new_dir, struct dentry *new_dentry);
-static int yaffs_setattr(struct dentry *dentry, struct iattr *attr);
-
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
-static int yaffs_sync_fs(struct super_block *sb, int wait);
-static void yaffs_write_super(struct super_block *sb);
-#else
-static int yaffs_sync_fs(struct super_block *sb);
-static int yaffs_write_super(struct super_block *sb);
-#endif
-
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
-static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf);
-#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
-static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf);
+#define yaffs_inode_to_obj_lv(iptr) ((iptr)->i_private)
#else
-static int yaffs_statfs(struct super_block *sb, struct statfs *buf);
+#define yaffs_inode_to_obj_lv(iptr) ((iptr)->u.generic_ip)
#endif
-#ifdef YAFFS_HAS_PUT_INODE
-static void yaffs_put_inode(struct inode *inode);
-#endif
-
-#ifdef YAFFS_HAS_EVICT_INODE
-static void yaffs_evict_inode(struct inode *);
-#else
-static void yaffs_delete_inode(struct inode *);
-static void yaffs_clear_inode(struct inode *);
-#endif
-
-static int yaffs_readpage(struct file *file, struct page *page);
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
-static int yaffs_writepage(struct page *page, struct writeback_control *wbc);
-#else
-static int yaffs_writepage(struct page *page);
-#endif
-
-#ifdef CONFIG_YAFFS_XATTR
-int yaffs_setxattr(struct dentry *dentry, const char *name,
- const void *value, size_t size, int flags);
-ssize_t yaffs_getxattr(struct dentry *dentry, const char *name, void *buff,
- size_t size);
-int yaffs_removexattr(struct dentry *dentry, const char *name);
-ssize_t yaffs_listxattr(struct dentry *dentry, char *buff, size_t size);
-#endif
-
-
-#if (YAFFS_USE_WRITE_BEGIN_END != 0)
-static int yaffs_write_begin(struct file *filp, struct address_space *mapping,
- loff_t pos, unsigned len, unsigned flags,
- struct page **pagep, void **fsdata);
-static int yaffs_write_end(struct file *filp, struct address_space *mapping,
- loff_t pos, unsigned len, unsigned copied,
- struct page *pg, void *fsdadata);
-#else
-static int yaffs_prepare_write(struct file *f, struct page *pg,
- unsigned offset, unsigned to);
-static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset,
- unsigned to);
-
-#endif
-
-static int yaffs_readlink(struct dentry *dentry, char __user *buffer,
- int buflen);
-#if (YAFFS_NEW_FOLLOW_LINK == 1)
-void yaffs_put_link(struct dentry *dentry, struct nameidata *nd, void *alias);
-static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd);
-#else
-static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd);
-#endif
-
-static void yaffs_touch_super(yaffs_dev_t *dev);
-
-static loff_t yaffs_dir_llseek(struct file *file, loff_t offset, int origin);
-
-static int yaffs_vfs_setattr(struct inode *, struct iattr *);
-
-
-static struct address_space_operations yaffs_file_address_operations = {
- .readpage = yaffs_readpage,
- .writepage = yaffs_writepage,
-#if (YAFFS_USE_WRITE_BEGIN_END > 0)
- .write_begin = yaffs_write_begin,
- .write_end = yaffs_write_end,
-#else
- .prepare_write = yaffs_prepare_write,
- .commit_write = yaffs_commit_write,
-#endif
-};
-
-
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 22))
-static const struct file_operations yaffs_file_operations = {
- .read = do_sync_read,
- .write = do_sync_write,
- .aio_read = generic_file_aio_read,
- .aio_write = generic_file_aio_write,
- .mmap = generic_file_mmap,
- .flush = yaffs_file_flush,
- .fsync = yaffs_sync_object,
- .splice_read = generic_file_splice_read,
- .splice_write = generic_file_splice_write,
- .llseek = generic_file_llseek,
-};
-
-#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18))
-
-static const struct file_operations yaffs_file_operations = {
- .read = do_sync_read,
- .write = do_sync_write,
- .aio_read = generic_file_aio_read,
- .aio_write = generic_file_aio_write,
- .mmap = generic_file_mmap,
- .flush = yaffs_file_flush,
- .fsync = yaffs_sync_object,
- .sendfile = generic_file_sendfile,
-};
-
-#else
+#define yaffs_inode_to_obj(iptr) \
+ ((struct yaffs_obj *)(yaffs_inode_to_obj_lv(iptr)))
+#define yaffs_dentry_to_obj(dptr) yaffs_inode_to_obj((dptr)->d_inode)
-static const struct file_operations yaffs_file_operations = {
- .read = generic_file_read,
- .write = generic_file_write,
- .mmap = generic_file_mmap,
- .flush = yaffs_file_flush,
- .fsync = yaffs_sync_object,
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
- .sendfile = generic_file_sendfile,
-#endif
-};
-#endif
-
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25))
-static void zero_user_segment(struct page *page, unsigned start, unsigned end)
-{
- void * kaddr = kmap_atomic(page, KM_USER0);
- memset(kaddr + start, 0, end - start);
- kunmap_atomic(kaddr, KM_USER0);
- flush_dcache_page(page);
-}
-#endif
-
-
-static const struct inode_operations yaffs_file_inode_operations = {
- .setattr = yaffs_setattr,
-#ifdef CONFIG_YAFFS_XATTR
- .setxattr = yaffs_setxattr,
- .getxattr = yaffs_getxattr,
- .listxattr = yaffs_listxattr,
- .removexattr = yaffs_removexattr,
-#endif
-};
-
-static const struct inode_operations yaffs_symlink_inode_operations = {
- .readlink = yaffs_readlink,
- .follow_link = yaffs_follow_link,
-#if (YAFFS_NEW_FOLLOW_LINK == 1)
- .put_link = yaffs_put_link,
-#endif
- .setattr = yaffs_setattr,
-#ifdef CONFIG_YAFFS_XATTR
- .setxattr = yaffs_setxattr,
- .getxattr = yaffs_getxattr,
- .listxattr = yaffs_listxattr,
- .removexattr = yaffs_removexattr,
-#endif
-};
-
-static const struct inode_operations yaffs_dir_inode_operations = {
- .create = yaffs_create,
- .lookup = yaffs_lookup,
- .link = yaffs_link,
- .unlink = yaffs_unlink,
- .symlink = yaffs_symlink,
- .mkdir = yaffs_mkdir,
- .rmdir = yaffs_unlink,
- .mknod = yaffs_mknod,
- .rename = yaffs_rename,
- .setattr = yaffs_setattr,
-#ifdef CONFIG_YAFFS_XATTR
- .setxattr = yaffs_setxattr,
- .getxattr = yaffs_getxattr,
- .listxattr = yaffs_listxattr,
- .removexattr = yaffs_removexattr,
-#endif
-};
-
-static const struct file_operations yaffs_dir_operations = {
- .read = generic_read_dir,
- .readdir = yaffs_readdir,
- .fsync = yaffs_sync_object,
- .llseek = yaffs_dir_llseek,
-};
-
-static const struct super_operations yaffs_super_ops = {
- .statfs = yaffs_statfs,
-
-#ifndef YAFFS_USE_OWN_IGET
- .read_inode = yaffs_read_inode,
-#endif
-#ifdef YAFFS_HAS_PUT_INODE
- .put_inode = yaffs_put_inode,
-#endif
- .put_super = yaffs_put_super,
-#ifdef YAFFS_HAS_EVICT_INODE
- .evict_inode = yaffs_evict_inode,
-#else
- .delete_inode = yaffs_delete_inode,
- .clear_inode = yaffs_clear_inode,
-#endif
- .sync_fs = yaffs_sync_fs,
- .write_super = yaffs_write_super,
-};
-
-
-static int yaffs_vfs_setattr(struct inode *inode, struct iattr *attr)
-{
-#ifdef YAFFS_USE_SETATTR_COPY
- setattr_copy(inode,attr);
- return 0;
-#else
- return inode_setattr(inode, attr);
-#endif
-
-}
-
-static int yaffs_vfs_setsize(struct inode *inode, loff_t newsize)
-{
-#ifdef YAFFS_USE_TRUNCATE_SETSIZE
- truncate_setsize(inode,newsize);
- return 0;
-#else
- truncate_inode_pages(&inode->i_data,newsize);
- return 0;
-#endif
-
-}
-
-static unsigned yaffs_gc_control_callback(yaffs_dev_t *dev)
-{
- return yaffs_gc_control;
-}
-
-static void yaffs_gross_lock(yaffs_dev_t *dev)
-{
- T(YAFFS_TRACE_LOCK, (TSTR("yaffs locking %p\n"), current));
- down(&(yaffs_dev_to_lc(dev)->grossLock));
- T(YAFFS_TRACE_LOCK, (TSTR("yaffs locked %p\n"), current));
-}
-
-static void yaffs_gross_unlock(yaffs_dev_t *dev)
-{
- T(YAFFS_TRACE_LOCK, (TSTR("yaffs unlocking %p\n"), current));
- up(&(yaffs_dev_to_lc(dev)->grossLock));
-}
-
-#ifdef YAFFS_COMPILE_EXPORTFS
-
-static struct inode *
-yaffs2_nfs_get_inode(struct super_block *sb, uint64_t ino, uint32_t generation)
-{
- return Y_IGET(sb, ino);
-}
-
-static struct dentry *
-yaffs2_fh_to_dentry(struct super_block *sb, struct fid *fid, int fh_len, int fh_type)
-{
- return generic_fh_to_dentry(sb, fid, fh_len, fh_type, yaffs2_nfs_get_inode) ;
-}
-
-static struct dentry *
- yaffs2_fh_to_parent(struct super_block *sb, struct fid *fid, int fh_len, int fh_type)
-{
- return generic_fh_to_parent(sb, fid, fh_len, fh_type, yaffs2_nfs_get_inode);
-}
-
-struct dentry *yaffs2_get_parent(struct dentry *dentry)
-{
-
- struct super_block *sb = dentry->d_inode->i_sb;
- struct dentry *parent = ERR_PTR(-ENOENT);
- struct inode *inode;
- unsigned long parent_ino;
- yaffs_obj_t *d_obj;
- yaffs_obj_t *parent_obj;
-
- d_obj = yaffs_InodeToObject(dentry->d_inode);
-
- if (d_obj) {
- parent_obj = d_obj->parent;
- if (parent_obj) {
- parent_ino = yaffs_get_obj_inode(parent_obj);
- inode = Y_IGET(sb, parent_ino);
-
- if (IS_ERR(inode)) {
- parent = ERR_CAST(inode);
- } else {
- parent = d_obtain_alias(inode);
- if (!IS_ERR(parent)) {
- parent = ERR_PTR(-ENOMEM);
- iput(inode);
- }
- }
- }
- }
-
- return parent;
-}
-
-/* Just declare a zero structure as a NULL value implies
- * using the default functions of exportfs.
- */
-
-static struct export_operations yaffs_export_ops =
-{
- .fh_to_dentry = yaffs2_fh_to_dentry,
- .fh_to_parent = yaffs2_fh_to_parent,
- .get_parent = yaffs2_get_parent,
-} ;
-
-#endif
-
-/*-----------------------------------------------------------------*/
-/* Directory search context allows us to unlock access to yaffs during
- * filldir without causing problems with the directory being modified.
- * This is similar to the tried and tested mechanism used in yaffs direct.
- *
- * A search context iterates along a doubly linked list of siblings in the
- * directory. If the iterating object is deleted then this would corrupt
- * the list iteration, likely causing a crash. The search context avoids
- * this by using the remove_obj_fn to move the search context to the
- * next object before the object is deleted.
- *
- * Many readdirs (and thus seach conexts) may be alive simulateously so
- * each yaffs_dev_t has a list of these.
- *
- * A seach context lives for the duration of a readdir.
- *
- * All these functions must be called while yaffs is locked.
- */
-
-struct yaffs_SearchContext {
- yaffs_dev_t *dev;
- yaffs_obj_t *dirObj;
- yaffs_obj_t *nextReturn;
- struct ylist_head others;
-};
-
-/*
- * yaffs_NewSearch() creates a new search context, initialises it and
- * adds it to the device's search context list.
- *
- * Called at start of readdir.
- */
-static struct yaffs_SearchContext * yaffs_NewSearch(yaffs_obj_t *dir)
-{
- yaffs_dev_t *dev = dir->my_dev;
- struct yaffs_SearchContext *sc = YMALLOC(sizeof(struct yaffs_SearchContext));
- if(sc){
- sc->dirObj = dir;
- sc->dev = dev;
- if( ylist_empty(&sc->dirObj->variant.dir_variant.children))
- sc->nextReturn = NULL;
- else
- sc->nextReturn = ylist_entry(
- dir->variant.dir_variant.children.next,
- yaffs_obj_t,siblings);
- YINIT_LIST_HEAD(&sc->others);
- ylist_add(&sc->others,&(yaffs_dev_to_lc(dev)->searchContexts));
- }
- return sc;
-}
-
-/*
- * yaffs_search_end() disposes of a search context and cleans up.
- */
-static void yaffs_search_end(struct yaffs_SearchContext * sc)
-{
- if(sc){
- ylist_del(&sc->others);
- YFREE(sc);
- }
-}
-
-/*
- * yaffs_search_advance() moves a search context to the next object.
- * Called when the search iterates or when an object removal causes
- * the search context to be moved to the next object.
- */
-static void yaffs_search_advance(struct yaffs_SearchContext *sc)
-{
- if(!sc)
- return;
-
- if( sc->nextReturn == NULL ||
- ylist_empty(&sc->dirObj->variant.dir_variant.children))
- sc->nextReturn = NULL;
- else {
- struct ylist_head *next = sc->nextReturn->siblings.next;
-
- if( next == &sc->dirObj->variant.dir_variant.children)
- sc->nextReturn = NULL; /* end of list */
- else
- sc->nextReturn = ylist_entry(next,yaffs_obj_t,siblings);
- }
-}
-
-/*
- * yaffs_remove_obj_callback() is called when an object is unlinked.
- * We check open search contexts and advance any which are currently
- * on the object being iterated.
- */
-static void yaffs_remove_obj_callback(yaffs_obj_t *obj)
-{
-
- struct ylist_head *i;
- struct yaffs_SearchContext *sc;
- struct ylist_head *search_contexts = &(yaffs_dev_to_lc(obj->my_dev)->searchContexts);
-
-
- /* Iterate through the directory search contexts.
- * If any are currently on the object being removed, then advance
- * the search context to the next object to prevent a hanging pointer.
- */
- ylist_for_each(i, search_contexts) {
- if (i) {
- sc = ylist_entry(i, struct yaffs_SearchContext,others);
- if(sc->nextReturn == obj)
- yaffs_search_advance(sc);
- }
- }
-
-}
-
-
-/*-----------------------------------------------------------------*/
-
-static int yaffs_readlink(struct dentry *dentry, char __user *buffer,
- int buflen)
-{
- unsigned char *alias;
- int ret;
-
- yaffs_dev_t *dev = yaffs_dentry_to_obj(dentry)->my_dev;
-
- yaffs_gross_lock(dev);
-
- alias = yaffs_get_symlink_alias(yaffs_dentry_to_obj(dentry));
-
- yaffs_gross_unlock(dev);
-
- if (!alias)
- return -ENOMEM;
-
- ret = vfs_readlink(dentry, buffer, buflen, alias);
- kfree(alias);
- return ret;
-}
-
-#if (YAFFS_NEW_FOLLOW_LINK == 1)
-static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd)
-#else
-static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd)
-#endif
-{
- unsigned char *alias;
- int ret;
- yaffs_dev_t *dev = yaffs_dentry_to_obj(dentry)->my_dev;
-
- yaffs_gross_lock(dev);
-
- alias = yaffs_get_symlink_alias(yaffs_dentry_to_obj(dentry));
- yaffs_gross_unlock(dev);
-
- if (!alias) {
- ret = -ENOMEM;
- goto out;
- }
-
-#if (YAFFS_NEW_FOLLOW_LINK == 1)
- nd_set_link(nd, alias);
- ret = (int)alias;
-out:
- return ERR_PTR(ret);
+#define yaffs_super_to_dev(sb) ((struct yaffs_dev *)sb->s_fs_info)
#else
- ret = vfs_follow_link(nd, alias);
- kfree(alias);
-out:
- return ret;
-#endif
-}
-
-#if (YAFFS_NEW_FOLLOW_LINK == 1)
-void yaffs_put_link(struct dentry *dentry, struct nameidata *nd, void *alias) {
- kfree(alias);
-}
+#define yaffs_super_to_dev(sb) ((struct yaffs_dev *)sb->u.generic_sbp)
#endif
-struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev,
- yaffs_obj_t *obj);
-
-/*
- * Lookup is used to find objects in the fs
- */
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
-
-static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry,
- struct nameidata *n)
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 5, 0))
+#define Y_CLEAR_INODE(i) clear_inode(i)
#else
-static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry)
-#endif
-{
- yaffs_obj_t *obj;
- struct inode *inode = NULL; /* NCB 2.5/2.6 needs NULL here */
-
- yaffs_dev_t *dev = yaffs_InodeToObject(dir)->my_dev;
-
- if(current != yaffs_dev_to_lc(dev)->readdirProcess)
- yaffs_gross_lock(dev);
-
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_lookup for %d:%s\n"),
- yaffs_InodeToObject(dir)->obj_id, dentry->d_name.name));
-
- obj = yaffs_find_by_name(yaffs_InodeToObject(dir),
- dentry->d_name.name);
-
- obj = yaffs_get_equivalent_obj(obj); /* in case it was a hardlink */
-
- /* Can't hold gross lock when calling yaffs_get_inode() */
- if(current != yaffs_dev_to_lc(dev)->readdirProcess)
- yaffs_gross_unlock(dev);
-
- if (obj) {
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_lookup found %d\n"), obj->obj_id));
-
- inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj);
-
- if (inode) {
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_loookup dentry \n")));
-/* #if 0 asserted by NCB for 2.5/6 compatability - falls through to
- * d_add even if NULL inode */
-#if 0
- /*dget(dentry); // try to solve directory bug */
- d_add(dentry, inode);
-
- /* return dentry; */
- return NULL;
-#endif
- }
-
- } else {
- T(YAFFS_TRACE_OS,(TSTR("yaffs_lookup not found\n")));
-
- }
-
-/* added NCB for 2.5/6 compatability - forces add even if inode is
- * NULL which creates dentry hash */
- d_add(dentry, inode);
-
- return NULL;
-}
-
-
-#ifdef YAFFS_HAS_PUT_INODE
-
-/* For now put inode is just for debugging
- * Put inode is called when the inode **structure** is put.
- */
-static void yaffs_put_inode(struct inode *inode)
-{
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_put_inode: ino %d, count %d\n"), (int)inode->i_ino,
- atomic_read(&inode->i_count)));
-
-}
+#define Y_CLEAR_INODE(i) end_writeback(i)
#endif
-static void yaffs_unstitch_obj(struct inode *inode, yaffs_obj_t *obj)
-{
- /* Clear the association between the inode and
- * the yaffs_obj_t.
- */
- obj->my_inode = NULL;
- yaffs_InodeToObjectLV(inode) = NULL;
-
- /* If the object freeing was deferred, then the real
- * free happens now.
- * This should fix the inode inconsistency problem.
- */
- yaffs_handle_defered_free(obj);
-}
-
-#ifdef YAFFS_HAS_EVICT_INODE
-/* yaffs_evict_inode combines into one operation what was previously done in
- * yaffs_clear_inode() and yaffs_delete_inode()
- *
- */
-static void yaffs_evict_inode( struct inode *inode)
-{
- yaffs_obj_t *obj;
- yaffs_dev_t *dev;
- int deleteme = 0;
-
- obj = yaffs_InodeToObject(inode);
-
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_evict_inode: ino %d, count %d %s\n"), (int)inode->i_ino,
- atomic_read(&inode->i_count),
- obj ? "object exists" : "null object"));
-
- if (!inode->i_nlink && !is_bad_inode(inode))
- deleteme = 1;
- truncate_inode_pages(&inode->i_data,0);
- end_writeback(inode);
-
- if(deleteme && obj){
- dev = obj->my_dev;
- yaffs_gross_lock(dev);
- yaffs_del_obj(obj);
- yaffs_gross_unlock(dev);
- }
- if (obj) {
- dev = obj->my_dev;
- yaffs_gross_lock(dev);
- yaffs_unstitch_obj(inode,obj);
- yaffs_gross_unlock(dev);
- }
+#define update_dir_time(dir) do {\
+ (dir)->i_ctime = (dir)->i_mtime = CURRENT_TIME; \
+ } while (0)
+static void yaffs_fill_inode_from_obj(struct inode *inode,
+ struct yaffs_obj *obj);
-}
-#else
-/* clear is called to tell the fs to release any per-inode data it holds.
- * The object might still exist on disk and is just being thrown out of the cache
- * or else the object has actually been deleted and we're being called via
- * the chain
- * yaffs_delete_inode() -> clear_inode()->yaffs_clear_inode()
- */
-
-static void yaffs_clear_inode(struct inode *inode)
+static void yaffs_gross_lock(struct yaffs_dev *dev)
{
- yaffs_obj_t *obj;
- yaffs_dev_t *dev;
-
- obj = yaffs_InodeToObject(inode);
-
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_clear_inode: ino %d, count %d %s\n"), (int)inode->i_ino,
- atomic_read(&inode->i_count),
- obj ? "object exists" : "null object"));
-
- if (obj) {
- dev = obj->my_dev;
- yaffs_gross_lock(dev);
- yaffs_unstitch_obj(inode,obj);
- yaffs_gross_unlock(dev);
- }
-
+ yaffs_trace(YAFFS_TRACE_LOCK, "yaffs locking %p", current);
+ mutex_lock(&(yaffs_dev_to_lc(dev)->gross_lock));
+ yaffs_trace(YAFFS_TRACE_LOCK, "yaffs locked %p", current);
}
-/* delete is called when the link count is zero and the inode
- * is put (ie. nobody wants to know about it anymore, time to
- * delete the file).
- * NB Must call clear_inode()
- */
-static void yaffs_delete_inode(struct inode *inode)
+static void yaffs_gross_unlock(struct yaffs_dev *dev)
{
- yaffs_obj_t *obj = yaffs_InodeToObject(inode);
- yaffs_dev_t *dev;
-
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_delete_inode: ino %d, count %d %s\n"), (int)inode->i_ino,
- atomic_read(&inode->i_count),
- obj ? "object exists" : "null object"));
-
- if (obj) {
- dev = obj->my_dev;
- yaffs_gross_lock(dev);
- yaffs_del_obj(obj);
- yaffs_gross_unlock(dev);
- }
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13))
- truncate_inode_pages(&inode->i_data, 0);
-#endif
- clear_inode(inode);
+ yaffs_trace(YAFFS_TRACE_LOCK, "yaffs unlocking %p", current);
+ mutex_unlock(&(yaffs_dev_to_lc(dev)->gross_lock));
}
-#endif
-
-
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
-static int yaffs_file_flush(struct file *file, fl_owner_t id)
-#else
-static int yaffs_file_flush(struct file *file)
-#endif
-{
- yaffs_obj_t *obj = yaffs_dentry_to_obj(file->f_dentry);
-
- yaffs_dev_t *dev = obj->my_dev;
-
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_file_flush object %d (%s)\n"), obj->obj_id,
- obj->dirty ? "dirty" : "clean"));
-
- yaffs_gross_lock(dev);
-
- yaffs_flush_file(obj, 1, 0);
-
- yaffs_gross_unlock(dev);
- return 0;
-}
static int yaffs_readpage_nolock(struct file *f, struct page *pg)
{
/* Lifted from jffs2 */
- yaffs_obj_t *obj;
+ struct yaffs_obj *obj;
unsigned char *pg_buf;
int ret;
+ loff_t pos = ((loff_t) pg->index) << PAGE_CACHE_SHIFT;
+ struct yaffs_dev *dev;
- yaffs_dev_t *dev;
-
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_readpage_nolock at %08x, size %08x\n"),
- (unsigned)(pg->index << PAGE_CACHE_SHIFT),
- (unsigned)PAGE_CACHE_SIZE));
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_readpage_nolock at %lld, size %08x",
+ (long long)pos,
+ (unsigned)PAGE_CACHE_SIZE);
obj = yaffs_dentry_to_obj(f->f_dentry);
@@ -1016,9 +290,7 @@ static int yaffs_readpage_nolock(struct file *f, struct page *pg)
yaffs_gross_lock(dev);
- ret = yaffs_file_rd(obj, pg_buf,
- pg->index << PAGE_CACHE_SHIFT,
- PAGE_CACHE_SIZE);
+ ret = yaffs_file_rd(obj, pg_buf, pos, PAGE_CACHE_SIZE);
yaffs_gross_unlock(dev);
@@ -1036,7 +308,7 @@ static int yaffs_readpage_nolock(struct file *f, struct page *pg)
flush_dcache_page(pg);
kunmap(pg);
- T(YAFFS_TRACE_OS, (TSTR("yaffs_readpage_nolock done\n")));
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_readpage_nolock done");
return ret;
}
@@ -1051,13 +323,59 @@ static int yaffs_readpage(struct file *f, struct page *pg)
{
int ret;
- T(YAFFS_TRACE_OS, (TSTR("yaffs_readpage\n")));
- ret=yaffs_readpage_unlock(f, pg);
- T(YAFFS_TRACE_OS, (TSTR("yaffs_readpage done\n")));
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_readpage");
+ ret = yaffs_readpage_unlock(f, pg);
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_readpage done");
return ret;
}
-/* writepage inspired by/stolen from smbfs */
+
+static void yaffs_set_super_dirty_val(struct yaffs_dev *dev, int val)
+{
+ struct yaffs_linux_context *lc = yaffs_dev_to_lc(dev);
+
+ if (lc)
+ lc->dirty = val;
+
+# ifdef YAFFS_SUPER_HAS_DIRTY
+ {
+ struct super_block *sb = lc->super;
+
+ if (sb)
+ sb->s_dirt = val;
+ }
+#endif
+
+}
+
+static void yaffs_set_super_dirty(struct yaffs_dev *dev)
+{
+ yaffs_set_super_dirty_val(dev, 1);
+}
+
+static void yaffs_clear_super_dirty(struct yaffs_dev *dev)
+{
+ yaffs_set_super_dirty_val(dev, 0);
+}
+
+static int yaffs_check_super_dirty(struct yaffs_dev *dev)
+{
+ struct yaffs_linux_context *lc = yaffs_dev_to_lc(dev);
+
+ if (lc && lc->dirty)
+ return 1;
+
+# ifdef YAFFS_SUPER_HAS_DIRTY
+ {
+ struct super_block *sb = lc->super;
+
+ if (sb && sb->s_dirt)
+ return 1;
+ }
+#endif
+ return 0;
+
+}
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
static int yaffs_writepage(struct page *page, struct writeback_control *wbc)
@@ -1065,13 +383,13 @@ static int yaffs_writepage(struct page *page, struct writeback_control *wbc)
static int yaffs_writepage(struct page *page)
#endif
{
- yaffs_dev_t *dev;
+ struct yaffs_dev *dev;
struct address_space *mapping = page->mapping;
struct inode *inode;
unsigned long end_index;
char *buffer;
- yaffs_obj_t *obj;
- int nWritten = 0;
+ struct yaffs_obj *obj;
+ int n_written = 0;
unsigned n_bytes;
loff_t i_size;
@@ -1084,20 +402,20 @@ static int yaffs_writepage(struct page *page)
end_index = i_size >> PAGE_CACHE_SHIFT;
- if(page->index < end_index)
+ if (page->index < end_index)
n_bytes = PAGE_CACHE_SIZE;
else {
- n_bytes = i_size & (PAGE_CACHE_SIZE -1);
+ n_bytes = i_size & (PAGE_CACHE_SIZE - 1);
if (page->index > end_index || !n_bytes) {
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_writepage at %08x, inode size = %08x!!!\n"),
- (unsigned)(page->index << PAGE_CACHE_SHIFT),
- (unsigned)inode->i_size));
- T(YAFFS_TRACE_OS,
- (TSTR(" -> don't care!!\n")));
-
- zero_user_segment(page,0,PAGE_CACHE_SIZE);
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_writepage at %lld, inode size = %lld!!",
+ ((loff_t)page->index) << PAGE_CACHE_SHIFT,
+ inode->i_size);
+ yaffs_trace(YAFFS_TRACE_OS,
+ " -> don't care!!");
+
+ zero_user_segment(page, 0, PAGE_CACHE_SIZE);
set_page_writeback(page);
unlock_page(page);
end_page_writeback(page);
@@ -1105,32 +423,32 @@ static int yaffs_writepage(struct page *page)
}
}
- if(n_bytes != PAGE_CACHE_SIZE)
- zero_user_segment(page,n_bytes,PAGE_CACHE_SIZE);
+ if (n_bytes != PAGE_CACHE_SIZE)
+ zero_user_segment(page, n_bytes, PAGE_CACHE_SIZE);
get_page(page);
buffer = kmap(page);
- obj = yaffs_InodeToObject(inode);
+ obj = yaffs_inode_to_obj(inode);
dev = obj->my_dev;
yaffs_gross_lock(dev);
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_writepage at %08x, size %08x\n"),
- (unsigned)(page->index << PAGE_CACHE_SHIFT), n_bytes));
- T(YAFFS_TRACE_OS,
- (TSTR("writepag0: obj = %05x, ino = %05x\n"),
- (int)obj->variant.file_variant.file_size, (int)inode->i_size));
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_writepage at %lld, size %08x",
+ ((loff_t)page->index) << PAGE_CACHE_SHIFT, n_bytes);
+ yaffs_trace(YAFFS_TRACE_OS,
+ "writepag0: obj = %lld, ino = %lld",
+ obj->variant.file_variant.file_size, inode->i_size);
- nWritten = yaffs_wr_file(obj, buffer,
- page->index << PAGE_CACHE_SHIFT, n_bytes, 0);
+ n_written = yaffs_wr_file(obj, buffer,
+ ((loff_t)page->index) << PAGE_CACHE_SHIFT, n_bytes, 0);
- yaffs_touch_super(dev);
+ yaffs_set_super_dirty(dev);
- T(YAFFS_TRACE_OS,
- (TSTR("writepag1: obj = %05x, ino = %05x\n"),
- (int)obj->variant.file_variant.file_size, (int)inode->i_size));
+ yaffs_trace(YAFFS_TRACE_OS,
+ "writepag1: obj = %lld, ino = %lld",
+ obj->variant.file_variant.file_size, inode->i_size);
yaffs_gross_unlock(dev);
@@ -1140,14 +458,51 @@ static int yaffs_writepage(struct page *page)
end_page_writeback(page);
put_page(page);
- return (nWritten == n_bytes) ? 0 : -ENOSPC;
+ return (n_written == n_bytes) ? 0 : -ENOSPC;
+}
+
+/* Space holding and freeing is done to ensure we have space available for write_begin/end */
+/* For now we just assume few parallel writes and check against a small number. */
+/* Todo: need to do this with a counter to handle parallel reads better */
+
+static ssize_t yaffs_hold_space(struct file *f)
+{
+ struct yaffs_obj *obj;
+ struct yaffs_dev *dev;
+
+ int n_free_chunks;
+
+ obj = yaffs_dentry_to_obj(f->f_dentry);
+
+ dev = obj->my_dev;
+
+ yaffs_gross_lock(dev);
+
+ n_free_chunks = yaffs_get_n_free_chunks(dev);
+
+ yaffs_gross_unlock(dev);
+
+ return (n_free_chunks > 20) ? 1 : 0;
}
+static void yaffs_release_space(struct file *f)
+{
+ struct yaffs_obj *obj;
+ struct yaffs_dev *dev;
+
+ obj = yaffs_dentry_to_obj(f->f_dentry);
+
+ dev = obj->my_dev;
+
+ yaffs_gross_lock(dev);
+
+ yaffs_gross_unlock(dev);
+}
#if (YAFFS_USE_WRITE_BEGIN_END > 0)
static int yaffs_write_begin(struct file *filp, struct address_space *mapping,
- loff_t pos, unsigned len, unsigned flags,
- struct page **pagep, void **fsdata)
+ loff_t pos, unsigned len, unsigned flags,
+ struct page **pagep, void **fsdata)
{
struct page *pg = NULL;
pgoff_t index = pos >> PAGE_CACHE_SHIFT;
@@ -1164,12 +519,12 @@ static int yaffs_write_begin(struct file *filp, struct address_space *mapping,
*pagep = pg;
if (!pg) {
- ret = -ENOMEM;
+ ret = -ENOMEM;
goto out;
}
- T(YAFFS_TRACE_OS,
- (TSTR("start yaffs_write_begin index %d(%x) uptodate %d\n"),
- (int)index,(int)index,Page_Uptodate(pg) ? 1 : 0));
+ yaffs_trace(YAFFS_TRACE_OS,
+ "start yaffs_write_begin index %d(%x) uptodate %d",
+ (int)index, (int)index, Page_Uptodate(pg) ? 1 : 0);
/* Get fs space */
space_held = yaffs_hold_space(filp);
@@ -1188,13 +543,13 @@ static int yaffs_write_begin(struct file *filp, struct address_space *mapping,
goto out;
/* Happy path return */
- T(YAFFS_TRACE_OS, (TSTR("end yaffs_write_begin - ok\n")));
+ yaffs_trace(YAFFS_TRACE_OS, "end yaffs_write_begin - ok");
return 0;
out:
- T(YAFFS_TRACE_OS,
- (TSTR("end yaffs_write_begin fail returning %d\n"), ret));
+ yaffs_trace(YAFFS_TRACE_OS,
+ "end yaffs_write_begin fail returning %d", ret);
if (space_held)
yaffs_release_space(filp);
if (pg) {
@@ -1207,9 +562,9 @@ out:
#else
static int yaffs_prepare_write(struct file *f, struct page *pg,
- unsigned offset, unsigned to)
+ unsigned offset, unsigned to)
{
- T(YAFFS_TRACE_OS, (TSTR("yaffs_prepair_write\n")));
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_prepair_write");
if (!Page_Uptodate(pg))
return yaffs_readpage_nolock(f, pg);
@@ -1217,10 +572,69 @@ static int yaffs_prepare_write(struct file *f, struct page *pg,
}
#endif
+
+static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n,
+ loff_t * pos)
+{
+ struct yaffs_obj *obj;
+ int n_written;
+ loff_t ipos;
+ struct inode *inode;
+ struct yaffs_dev *dev;
+
+ obj = yaffs_dentry_to_obj(f->f_dentry);
+
+ if (!obj) {
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_file_write: hey obj is null!");
+ return -EINVAL;
+ }
+
+ dev = obj->my_dev;
+
+ yaffs_gross_lock(dev);
+
+ inode = f->f_dentry->d_inode;
+
+ if (!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND)
+ ipos = inode->i_size;
+ else
+ ipos = *pos;
+
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_file_write about to write writing %u(%x) bytes to object %d at %lld",
+ (unsigned)n, (unsigned)n, obj->obj_id, ipos);
+
+ n_written = yaffs_wr_file(obj, buf, ipos, n, 0);
+
+ yaffs_set_super_dirty(dev);
+
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_file_write: %d(%x) bytes written",
+ (unsigned)n, (unsigned)n);
+
+ if (n_written > 0) {
+ ipos += n_written;
+ *pos = ipos;
+ if (ipos > inode->i_size) {
+ inode->i_size = ipos;
+ inode->i_blocks = (ipos + 511) >> 9;
+
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_file_write size updated to %lld bytes, %d blocks",
+ ipos, (int)(inode->i_blocks));
+ }
+
+ }
+ yaffs_gross_unlock(dev);
+ return (n_written == 0) && (n > 0) ? -ENOSPC : n_written;
+}
+
+
#if (YAFFS_USE_WRITE_BEGIN_END > 0)
static int yaffs_write_end(struct file *filp, struct address_space *mapping,
- loff_t pos, unsigned len, unsigned copied,
- struct page *pg, void *fsdadata)
+ loff_t pos, unsigned len, unsigned copied,
+ struct page *pg, void *fsdadata)
{
int ret = 0;
void *addr, *kva;
@@ -1229,19 +643,17 @@ static int yaffs_write_end(struct file *filp, struct address_space *mapping,
kva = kmap(pg);
addr = kva + offset_into_page;
- T(YAFFS_TRACE_OS,
- ("yaffs_write_end addr %p pos %x n_bytes %d\n",
- addr,(unsigned)pos, copied));
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_write_end addr %p pos %lld n_bytes %d",
+ addr, pos, copied);
ret = yaffs_file_write(filp, addr, copied, &pos);
if (ret != copied) {
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_write_end not same size ret %d copied %d\n"),
- ret, copied));
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_write_end not same size ret %d copied %d",
+ ret, copied);
SetPageError(pg);
- } else {
- /* Nothing */
}
kunmap(pg);
@@ -1254,425 +666,539 @@ static int yaffs_write_end(struct file *filp, struct address_space *mapping,
#else
static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset,
- unsigned to)
+ unsigned to)
{
void *addr, *kva;
loff_t pos = (((loff_t) pg->index) << PAGE_CACHE_SHIFT) + offset;
int n_bytes = to - offset;
- int nWritten;
-
- unsigned spos = pos;
- unsigned saddr;
+ int n_written;
kva = kmap(pg);
addr = kva + offset;
- saddr = (unsigned) addr;
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_commit_write addr %p pos %lld n_bytes %d",
+ addr, pos, n_bytes);
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_commit_write addr %x pos %x n_bytes %d\n"),
- saddr, spos, n_bytes));
+ n_written = yaffs_file_write(f, addr, n_bytes, &pos);
- nWritten = yaffs_file_write(f, addr, n_bytes, &pos);
-
- if (nWritten != n_bytes) {
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_commit_write not same size nWritten %d n_bytes %d\n"),
- nWritten, n_bytes));
+ if (n_written != n_bytes) {
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_commit_write not same size n_written %d n_bytes %d",
+ n_written, n_bytes);
SetPageError(pg);
- } else {
- /* Nothing */
}
-
kunmap(pg);
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_commit_write returning %d\n"),
- nWritten == n_bytes ? 0 : nWritten));
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_commit_write returning %d",
+ n_written == n_bytes ? 0 : n_written);
- return nWritten == n_bytes ? 0 : nWritten;
+ return n_written == n_bytes ? 0 : n_written;
}
#endif
+static struct address_space_operations yaffs_file_address_operations = {
+ .readpage = yaffs_readpage,
+ .writepage = yaffs_writepage,
+#if (YAFFS_USE_WRITE_BEGIN_END > 0)
+ .write_begin = yaffs_write_begin,
+ .write_end = yaffs_write_end,
+#else
+ .prepare_write = yaffs_prepare_write,
+ .commit_write = yaffs_commit_write,
+#endif
+};
-static void yaffs_fill_inode_from_obj(struct inode *inode, yaffs_obj_t *obj)
+
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+static int yaffs_file_flush(struct file *file, fl_owner_t id)
+#else
+static int yaffs_file_flush(struct file *file)
+#endif
{
- if (inode && obj) {
+ struct yaffs_obj *obj = yaffs_dentry_to_obj(file->f_dentry);
+ struct yaffs_dev *dev = obj->my_dev;
- /* Check mode against the variant type and attempt to repair if broken. */
- __u32 mode = obj->yst_mode;
- switch (obj->variant_type) {
- case YAFFS_OBJECT_TYPE_FILE:
- if (!S_ISREG(mode)) {
- obj->yst_mode &= ~S_IFMT;
- obj->yst_mode |= S_IFREG;
- }
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_file_flush object %d (%s)",
+ obj->obj_id,
+ obj->dirty ? "dirty" : "clean");
- break;
- case YAFFS_OBJECT_TYPE_SYMLINK:
- if (!S_ISLNK(mode)) {
- obj->yst_mode &= ~S_IFMT;
- obj->yst_mode |= S_IFLNK;
- }
+ yaffs_gross_lock(dev);
- break;
- case YAFFS_OBJECT_TYPE_DIRECTORY:
- if (!S_ISDIR(mode)) {
- obj->yst_mode &= ~S_IFMT;
- obj->yst_mode |= S_IFDIR;
- }
+ yaffs_flush_file(obj, 1, 0);
- break;
- case YAFFS_OBJECT_TYPE_UNKNOWN:
- case YAFFS_OBJECT_TYPE_HARDLINK:
- case YAFFS_OBJECT_TYPE_SPECIAL:
- default:
- /* TODO? */
- break;
- }
+ yaffs_gross_unlock(dev);
- inode->i_flags |= S_NOATIME;
+ return 0;
+}
- inode->i_ino = obj->obj_id;
- inode->i_mode = obj->yst_mode;
- inode->i_uid = obj->yst_uid;
- inode->i_gid = obj->yst_gid;
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19))
- inode->i_blksize = inode->i_sb->s_blocksize;
-#endif
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
- inode->i_rdev = old_decode_dev(obj->yst_rdev);
- inode->i_atime.tv_sec = (time_t) (obj->yst_atime);
- inode->i_atime.tv_nsec = 0;
- inode->i_mtime.tv_sec = (time_t) obj->yst_mtime;
- inode->i_mtime.tv_nsec = 0;
- inode->i_ctime.tv_sec = (time_t) obj->yst_ctime;
- inode->i_ctime.tv_nsec = 0;
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39))
+static int yaffs_sync_object(struct file *file, loff_t start, loff_t end, int datasync)
+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34))
+static int yaffs_sync_object(struct file *file, int datasync)
#else
- inode->i_rdev = obj->yst_rdev;
- inode->i_atime = obj->yst_atime;
- inode->i_mtime = obj->yst_mtime;
- inode->i_ctime = obj->yst_ctime;
+static int yaffs_sync_object(struct file *file, struct dentry *dentry,
+ int datasync)
+#endif
+{
+ struct yaffs_obj *obj;
+ struct yaffs_dev *dev;
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34))
+ struct dentry *dentry = file->f_path.dentry;
#endif
- inode->i_size = yaffs_get_obj_length(obj);
- inode->i_blocks = (inode->i_size + 511) >> 9;
- inode->i_nlink = yaffs_get_obj_link_count(obj);
+ obj = yaffs_dentry_to_obj(dentry);
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_fill_inode mode %x uid %d gid %d size %d count %d\n"),
- inode->i_mode, inode->i_uid, inode->i_gid,
- (int)inode->i_size, atomic_read(&inode->i_count)));
+ dev = obj->my_dev;
- switch (obj->yst_mode & S_IFMT) {
- default: /* fifo, device or socket */
+ yaffs_trace(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC,
+ "yaffs_sync_object");
+ yaffs_gross_lock(dev);
+ yaffs_flush_file(obj, 1, datasync);
+ yaffs_gross_unlock(dev);
+ return 0;
+}
+
+
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 22))
+static const struct file_operations yaffs_file_operations = {
+ .read = do_sync_read,
+ .write = do_sync_write,
+ .aio_read = generic_file_aio_read,
+ .aio_write = generic_file_aio_write,
+ .mmap = generic_file_mmap,
+ .flush = yaffs_file_flush,
+ .fsync = yaffs_sync_object,
+ .splice_read = generic_file_splice_read,
+ .splice_write = generic_file_splice_write,
+ .llseek = generic_file_llseek,
+};
+
+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18))
+
+static const struct file_operations yaffs_file_operations = {
+ .read = do_sync_read,
+ .write = do_sync_write,
+ .aio_read = generic_file_aio_read,
+ .aio_write = generic_file_aio_write,
+ .mmap = generic_file_mmap,
+ .flush = yaffs_file_flush,
+ .fsync = yaffs_sync_object,
+ .sendfile = generic_file_sendfile,
+};
+
+#else
+
+static const struct file_operations yaffs_file_operations = {
+ .read = generic_file_read,
+ .write = generic_file_write,
+ .mmap = generic_file_mmap,
+ .flush = yaffs_file_flush,
+ .fsync = yaffs_sync_object,
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
- init_special_inode(inode, obj->yst_mode,
- old_decode_dev(obj->yst_rdev));
+ .sendfile = generic_file_sendfile,
+#endif
+};
+#endif
+
+
+
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25))
+static void zero_user_segment(struct page *page, unsigned start, unsigned end)
+{
+ void *kaddr = kmap_atomic(page, KM_USER0);
+ memset(kaddr + start, 0, end - start);
+ kunmap_atomic(kaddr, KM_USER0);
+ flush_dcache_page(page);
+}
+#endif
+
+
+static int yaffs_vfs_setsize(struct inode *inode, loff_t newsize)
+{
+#ifdef YAFFS_USE_TRUNCATE_SETSIZE
+ truncate_setsize(inode, newsize);
+ return 0;
#else
- init_special_inode(inode, obj->yst_mode,
- (dev_t) (obj->yst_rdev));
+ truncate_inode_pages(&inode->i_data, newsize);
+ return 0;
#endif
- break;
- case S_IFREG: /* file */
- inode->i_op = &yaffs_file_inode_operations;
- inode->i_fop = &yaffs_file_operations;
- inode->i_mapping->a_ops =
- &yaffs_file_address_operations;
- break;
- case S_IFDIR: /* directory */
- inode->i_op = &yaffs_dir_inode_operations;
- inode->i_fop = &yaffs_dir_operations;
- break;
- case S_IFLNK: /* symlink */
- inode->i_op = &yaffs_symlink_inode_operations;
- break;
- }
- yaffs_InodeToObjectLV(inode) = obj;
+}
- obj->my_inode = inode;
- } else {
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_FileInode invalid parameters\n")));
- }
+static int yaffs_vfs_setattr(struct inode *inode, struct iattr *attr)
+{
+#ifdef YAFFS_USE_SETATTR_COPY
+ setattr_copy(inode, attr);
+ return 0;
+#else
+ return inode_setattr(inode, attr);
+#endif
}
-struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev,
- yaffs_obj_t *obj)
+static int yaffs_setattr(struct dentry *dentry, struct iattr *attr)
{
- struct inode *inode;
+ struct inode *inode = dentry->d_inode;
+ int error = 0;
+ struct yaffs_dev *dev;
- if (!sb) {
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_get_inode for NULL super_block!!\n")));
- return NULL;
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_setattr of object %d",
+ yaffs_inode_to_obj(inode)->obj_id);
+#if 0
+ /* Fail if a requested resize >= 2GB */
+ if (attr->ia_valid & ATTR_SIZE && (attr->ia_size >> 31))
+ error = -EINVAL;
+#endif
+
+ if (error == 0)
+ error = inode_change_ok(inode, attr);
+ if (error == 0) {
+ int result;
+ if (!error) {
+ error = yaffs_vfs_setattr(inode, attr);
+ yaffs_trace(YAFFS_TRACE_OS, "inode_setattr called");
+ if (attr->ia_valid & ATTR_SIZE) {
+ yaffs_vfs_setsize(inode, attr->ia_size);
+ inode->i_blocks = (inode->i_size + 511) >> 9;
+ }
+ }
+ dev = yaffs_inode_to_obj(inode)->my_dev;
+ if (attr->ia_valid & ATTR_SIZE) {
+ yaffs_trace(YAFFS_TRACE_OS,
+ "resize to %d(%x)",
+ (int)(attr->ia_size),
+ (int)(attr->ia_size));
+ }
+ yaffs_gross_lock(dev);
+ result = yaffs_set_attribs(yaffs_inode_to_obj(inode), attr);
+ if (result == YAFFS_OK) {
+ error = 0;
+ } else {
+ error = -EPERM;
+ }
+ yaffs_gross_unlock(dev);
}
- if (!obj) {
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_get_inode for NULL object!!\n")));
- return NULL;
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_setattr done returning %d", error);
- }
+ return error;
+}
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_get_inode for object %d\n"), obj->obj_id));
+static int yaffs_setxattr(struct dentry *dentry, const char *name,
+ const void *value, size_t size, int flags)
+{
+ struct inode *inode = dentry->d_inode;
+ int error = 0;
+ struct yaffs_dev *dev;
+ struct yaffs_obj *obj = yaffs_inode_to_obj(inode);
- inode = Y_IGET(sb, obj->obj_id);
- if (IS_ERR(inode))
- return NULL;
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_setxattr of object %d", obj->obj_id);
- /* NB Side effect: iget calls back to yaffs_read_inode(). */
- /* iget also increments the inode's i_count */
- /* NB You can't be holding grossLock or deadlock will happen! */
+ if (error == 0) {
+ int result;
+ dev = obj->my_dev;
+ yaffs_gross_lock(dev);
+ result = yaffs_set_xattrib(obj, name, value, size, flags);
+ if (result == YAFFS_OK)
+ error = 0;
+ else if (result < 0)
+ error = result;
+ yaffs_gross_unlock(dev);
- return inode;
+ }
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_setxattr done returning %d", error);
+
+ return error;
}
-static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n,
- loff_t *pos)
+static ssize_t yaffs_getxattr(struct dentry * dentry, const char *name,
+ void *buff, size_t size)
{
- yaffs_obj_t *obj;
- int nWritten, ipos;
- struct inode *inode;
- yaffs_dev_t *dev;
+ struct inode *inode = dentry->d_inode;
+ int error = 0;
+ struct yaffs_dev *dev;
+ struct yaffs_obj *obj = yaffs_inode_to_obj(inode);
- obj = yaffs_dentry_to_obj(f->f_dentry);
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_getxattr \"%s\" from object %d",
+ name, obj->obj_id);
- dev = obj->my_dev;
+ if (error == 0) {
+ dev = obj->my_dev;
+ yaffs_gross_lock(dev);
+ error = yaffs_get_xattrib(obj, name, buff, size);
+ yaffs_gross_unlock(dev);
- yaffs_gross_lock(dev);
+ }
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_getxattr done returning %d", error);
- inode = f->f_dentry->d_inode;
+ return error;
+}
- if (!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND)
- ipos = inode->i_size;
- else
- ipos = *pos;
+static int yaffs_removexattr(struct dentry *dentry, const char *name)
+{
+ struct inode *inode = dentry->d_inode;
+ int error = 0;
+ struct yaffs_dev *dev;
+ struct yaffs_obj *obj = yaffs_inode_to_obj(inode);
- if (!obj)
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_file_write: hey obj is null!\n")));
- else
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_file_write about to write writing %u(%x) bytes"
- "to object %d at %d(%x)\n"),
- (unsigned) n, (unsigned) n, obj->obj_id, ipos,ipos));
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_removexattr of object %d", obj->obj_id);
- nWritten = yaffs_wr_file(obj, buf, ipos, n, 0);
+ if (error == 0) {
+ int result;
+ dev = obj->my_dev;
+ yaffs_gross_lock(dev);
+ result = yaffs_remove_xattrib(obj, name);
+ if (result == YAFFS_OK)
+ error = 0;
+ else if (result < 0)
+ error = result;
+ yaffs_gross_unlock(dev);
- yaffs_touch_super(dev);
+ }
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_removexattr done returning %d", error);
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_file_write: %d(%x) bytes written\n"),
- (unsigned )n,(unsigned)n));
+ return error;
+}
- if (nWritten > 0) {
- ipos += nWritten;
- *pos = ipos;
- if (ipos > inode->i_size) {
- inode->i_size = ipos;
- inode->i_blocks = (ipos + 511) >> 9;
+static ssize_t yaffs_listxattr(struct dentry * dentry, char *buff, size_t size)
+{
+ struct inode *inode = dentry->d_inode;
+ int error = 0;
+ struct yaffs_dev *dev;
+ struct yaffs_obj *obj = yaffs_inode_to_obj(inode);
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_file_write size updated to %d bytes, "
- "%d blocks\n"),
- ipos, (int)(inode->i_blocks)));
- }
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_listxattr of object %d", obj->obj_id);
+
+ if (error == 0) {
+ dev = obj->my_dev;
+ yaffs_gross_lock(dev);
+ error = yaffs_list_xattrib(obj, buff, size);
+ yaffs_gross_unlock(dev);
}
- yaffs_gross_unlock(dev);
- return (nWritten == 0) && (n > 0) ? -ENOSPC : nWritten;
-}
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_listxattr done returning %d", error);
-/* Space holding and freeing is done to ensure we have space available for write_begin/end */
-/* For now we just assume few parallel writes and check against a small number. */
-/* Todo: need to do this with a counter to handle parallel reads better */
+ return error;
+}
-static ssize_t yaffs_hold_space(struct file *f)
-{
- yaffs_obj_t *obj;
- yaffs_dev_t *dev;
- int n_free_chunks;
+static const struct inode_operations yaffs_file_inode_operations = {
+ .setattr = yaffs_setattr,
+ .setxattr = yaffs_setxattr,
+ .getxattr = yaffs_getxattr,
+ .listxattr = yaffs_listxattr,
+ .removexattr = yaffs_removexattr,
+};
- obj = yaffs_dentry_to_obj(f->f_dentry);
+static int yaffs_readlink(struct dentry *dentry, char __user * buffer,
+ int buflen)
+{
+ unsigned char *alias;
+ int ret;
- dev = obj->my_dev;
+ struct yaffs_dev *dev = yaffs_dentry_to_obj(dentry)->my_dev;
yaffs_gross_lock(dev);
- n_free_chunks = yaffs_get_n_free_chunks(dev);
+ alias = yaffs_get_symlink_alias(yaffs_dentry_to_obj(dentry));
yaffs_gross_unlock(dev);
- return (n_free_chunks > 20) ? 1 : 0;
+ if (!alias)
+ return -ENOMEM;
+
+ ret = vfs_readlink(dentry, buffer, buflen, alias);
+ kfree(alias);
+ return ret;
}
-static void yaffs_release_space(struct file *f)
+#if (YAFFS_NEW_FOLLOW_LINK == 1)
+static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd)
{
- yaffs_obj_t *obj;
- yaffs_dev_t *dev;
-
-
- obj = yaffs_dentry_to_obj(f->f_dentry);
-
- dev = obj->my_dev;
+ void *ret;
+#else
+static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd)
+{
+ int ret
+#endif
+ unsigned char *alias;
+ int ret_int = 0;
+ struct yaffs_dev *dev = yaffs_dentry_to_obj(dentry)->my_dev;
yaffs_gross_lock(dev);
-
+ alias = yaffs_get_symlink_alias(yaffs_dentry_to_obj(dentry));
yaffs_gross_unlock(dev);
-}
+ if (!alias) {
+ ret_int = -ENOMEM;
+ goto out;
+ }
+#if (YAFFS_NEW_FOLLOW_LINK == 1)
+ nd_set_link(nd, alias);
+ ret = alias;
+out:
+ if (ret_int)
+ ret = ERR_PTR(ret_int);
+ return ret;
+#else
+ ret = vfs_follow_link(nd, alias);
+ kfree(alias);
+out:
+ if (ret_int)
+ ret = ret_int;
+ return ret;
+#endif
+}
-static loff_t yaffs_dir_llseek(struct file *file, loff_t offset, int origin)
-{
- long long retval;
- lock_kernel();
+#ifdef YAFFS_HAS_PUT_INODE
- switch (origin){
- case 2:
- offset += i_size_read(file->f_path.dentry->d_inode);
- break;
- case 1:
- offset += file->f_pos;
- }
- retval = -EINVAL;
+/* For now put inode is just for debugging
+ * Put inode is called when the inode **structure** is put.
+ */
+static void yaffs_put_inode(struct inode *inode)
+{
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_put_inode: ino %d, count %d"),
+ (int)inode->i_ino, atomic_read(&inode->i_count);
- if (offset >= 0){
- if (offset != file->f_pos)
- file->f_pos = offset;
+}
+#endif
- retval = offset;
- }
- unlock_kernel();
- return retval;
+#if (YAFFS_NEW_FOLLOW_LINK == 1)
+void yaffs_put_link(struct dentry *dentry, struct nameidata *nd, void *alias)
+{
+ kfree(alias);
}
+#endif
+
+static const struct inode_operations yaffs_symlink_inode_operations = {
+ .readlink = yaffs_readlink,
+ .follow_link = yaffs_follow_link,
+#if (YAFFS_NEW_FOLLOW_LINK == 1)
+ .put_link = yaffs_put_link,
+#endif
+ .setattr = yaffs_setattr,
+ .setxattr = yaffs_setxattr,
+ .getxattr = yaffs_getxattr,
+ .listxattr = yaffs_listxattr,
+ .removexattr = yaffs_removexattr,
+};
+#ifdef YAFFS_USE_OWN_IGET
-static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir)
+static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino)
{
- yaffs_obj_t *obj;
- yaffs_dev_t *dev;
- struct yaffs_SearchContext *sc;
- struct inode *inode = f->f_dentry->d_inode;
- unsigned long offset, curoffs;
- yaffs_obj_t *l;
- int retVal = 0;
+ struct inode *inode;
+ struct yaffs_obj *obj;
+ struct yaffs_dev *dev = yaffs_super_to_dev(sb);
- char name[YAFFS_MAX_NAME_LENGTH + 1];
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_iget for %lu", ino);
- obj = yaffs_dentry_to_obj(f->f_dentry);
- dev = obj->my_dev;
+ inode = iget_locked(sb, ino);
+ if (!inode)
+ return ERR_PTR(-ENOMEM);
+ if (!(inode->i_state & I_NEW))
+ return inode;
+
+ /* NB This is called as a side effect of other functions, but
+ * we had to release the lock to prevent deadlocks, so
+ * need to lock again.
+ */
yaffs_gross_lock(dev);
- yaffs_dev_to_lc(dev)->readdirProcess = current;
+ obj = yaffs_find_by_number(dev, inode->i_ino);
- offset = f->f_pos;
+ yaffs_fill_inode_from_obj(inode, obj);
- sc = yaffs_NewSearch(obj);
- if(!sc){
- retVal = -ENOMEM;
- goto out;
- }
+ yaffs_gross_unlock(dev);
- T(YAFFS_TRACE_OS, (TSTR("yaffs_readdir: starting at %d\n"), (int)offset));
+ unlock_new_inode(inode);
+ return inode;
+}
- if (offset == 0) {
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_readdir: entry . ino %d \n"),
- (int)inode->i_ino));
- yaffs_gross_unlock(dev);
- if (filldir(dirent, ".", 1, offset, inode->i_ino, DT_DIR) < 0){
- yaffs_gross_lock(dev);
- goto out;
- }
+#else
+
+static void yaffs_read_inode(struct inode *inode)
+{
+ /* NB This is called as a side effect of other functions, but
+ * we had to release the lock to prevent deadlocks, so
+ * need to lock again.
+ */
+
+ struct yaffs_obj *obj;
+ struct yaffs_dev *dev = yaffs_super_to_dev(inode->i_sb);
+
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_read_inode for %d", (int)inode->i_ino);
+
+ if (current != yaffs_dev_to_lc(dev)->readdir_process)
yaffs_gross_lock(dev);
- offset++;
- f->f_pos++;
- }
- if (offset == 1) {
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_readdir: entry .. ino %d \n"),
- (int)f->f_dentry->d_parent->d_inode->i_ino));
+
+ obj = yaffs_find_by_number(dev, inode->i_ino);
+
+ yaffs_fill_inode_from_obj(inode, obj);
+
+ if (current != yaffs_dev_to_lc(dev)->readdir_process)
yaffs_gross_unlock(dev);
- if (filldir(dirent, "..", 2, offset,
- f->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0){
- yaffs_gross_lock(dev);
- goto out;
- }
- yaffs_gross_lock(dev);
- offset++;
- f->f_pos++;
- }
+}
- curoffs = 1;
+#endif
- /* If the directory has changed since the open or last call to
- readdir, rewind to after the 2 canned entries. */
- if (f->f_version != inode->i_version) {
- offset = 2;
- f->f_pos = offset;
- f->f_version = inode->i_version;
- }
- while(sc->nextReturn){
- curoffs++;
- l = sc->nextReturn;
- if (curoffs >= offset) {
- int this_inode = yaffs_get_obj_inode(l);
- int this_type = yaffs_get_obj_type(l);
- yaffs_get_obj_name(l, name,
- YAFFS_MAX_NAME_LENGTH + 1);
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_readdir: %s inode %d\n"),
- name, yaffs_get_obj_inode(l)));
+struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev,
+ struct yaffs_obj *obj)
+{
+ struct inode *inode;
- yaffs_gross_unlock(dev);
+ if (!sb) {
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_get_inode for NULL super_block!!");
+ return NULL;
- if (filldir(dirent,
- name,
- strlen(name),
- offset,
- this_inode,
- this_type) < 0){
- yaffs_gross_lock(dev);
- goto out;
- }
+ }
- yaffs_gross_lock(dev);
+ if (!obj) {
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_get_inode for NULL object!!");
+ return NULL;
- offset++;
- f->f_pos++;
- }
- yaffs_search_advance(sc);
}
-out:
- yaffs_search_end(sc);
- yaffs_dev_to_lc(dev)->readdirProcess = NULL;
- yaffs_gross_unlock(dev);
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_get_inode for object %d", obj->obj_id);
- return retVal;
-}
+ inode = Y_IGET(sb, obj->obj_id);
+ if (IS_ERR(inode))
+ return NULL;
+ /* NB Side effect: iget calls back to yaffs_read_inode(). */
+ /* iget also increments the inode's i_count */
+ /* NB You can't be holding gross_lock or deadlock will happen! */
+
+ return inode;
+}
-/*
- * File creation. Allocate an inode, and we're done..
- */
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29)
#define YCRED(x) x
@@ -1680,41 +1206,45 @@ out:
#define YCRED(x) (x->cred)
#endif
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 4, 0))
+static int yaffs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode,
+ dev_t rdev)
+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
- dev_t rdev)
+ dev_t rdev)
#else
static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
- int rdev)
+ int rdev)
#endif
{
struct inode *inode;
- yaffs_obj_t *obj = NULL;
- yaffs_dev_t *dev;
+ struct yaffs_obj *obj = NULL;
+ struct yaffs_dev *dev;
- yaffs_obj_t *parent = yaffs_InodeToObject(dir);
+ struct yaffs_obj *parent = yaffs_inode_to_obj(dir);
int error = -ENOSPC;
uid_t uid = YCRED(current)->fsuid;
- gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid;
+ gid_t gid =
+ (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid;
if ((dir->i_mode & S_ISGID) && S_ISDIR(mode))
mode |= S_ISGID;
if (parent) {
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_mknod: parent object %d type %d\n"),
- parent->obj_id, parent->variant_type));
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_mknod: parent object %d type %d",
+ parent->obj_id, parent->variant_type);
} else {
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_mknod: could not get parent object\n")));
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_mknod: could not get parent object");
return -EPERM;
}
- T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making oject for %s, "
- "mode %x dev %x\n"),
- dentry->d_name.name, mode, rdev));
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_mknod: making oject for %s, mode %x dev %x",
+ dentry->d_name.name, mode, rdev);
dev = parent->my_dev;
@@ -1723,28 +1253,29 @@ static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
switch (mode & S_IFMT) {
default:
/* Special (socket, fifo, device...) */
- T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making special\n")));
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_mknod: making special");
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
- obj = yaffs_create_special(parent, dentry->d_name.name, mode, uid,
- gid, old_encode_dev(rdev));
+ obj =
+ yaffs_create_special(parent, dentry->d_name.name, mode, uid,
+ gid, old_encode_dev(rdev));
#else
- obj = yaffs_create_special(parent, dentry->d_name.name, mode, uid,
- gid, rdev);
+ obj =
+ yaffs_create_special(parent, dentry->d_name.name, mode, uid,
+ gid, rdev);
#endif
break;
case S_IFREG: /* file */
- T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making file\n")));
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_mknod: making file");
obj = yaffs_create_file(parent, dentry->d_name.name, mode, uid,
- gid);
+ gid);
break;
case S_IFDIR: /* directory */
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_mknod: making directory\n")));
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_mknod: making directory");
obj = yaffs_create_dir(parent, dentry->d_name.name, mode,
- uid, gid);
+ uid, gid);
break;
case S_IFLNK: /* symlink */
- T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making symlink\n")));
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_mknod: making symlink");
obj = NULL; /* Do we ever get here? */
break;
}
@@ -1756,104 +1287,131 @@ static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
inode = yaffs_get_inode(dir->i_sb, mode, rdev, obj);
d_instantiate(dentry, inode);
update_dir_time(dir);
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_mknod created object %d count = %d\n"),
- obj->obj_id, atomic_read(&inode->i_count)));
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_mknod created object %d count = %d",
+ obj->obj_id, atomic_read(&inode->i_count));
error = 0;
- yaffs_fill_inode_from_obj(dir,parent);
+ yaffs_fill_inode_from_obj(dir, parent);
} else {
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_mknod failed making object\n")));
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_mknod failed making object");
error = -ENOMEM;
}
return error;
}
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 4, 0))
+static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
+#else
static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
+#endif
{
- int retVal;
- T(YAFFS_TRACE_OS, (TSTR("yaffs_mkdir\n")));
- retVal = yaffs_mknod(dir, dentry, mode | S_IFDIR, 0);
- return retVal;
+ int ret_val;
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_mkdir");
+ ret_val = yaffs_mknod(dir, dentry, mode | S_IFDIR, 0);
+ return ret_val;
}
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0))
+static int yaffs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
+ bool dummy)
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 4, 0))
+static int yaffs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
+ struct nameidata *n)
+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode,
struct nameidata *n)
#else
static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode)
#endif
{
- T(YAFFS_TRACE_OS,(TSTR("yaffs_create\n")));
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_create");
return yaffs_mknod(dir, dentry, mode | S_IFREG, 0);
}
-static int yaffs_unlink(struct inode *dir, struct dentry *dentry)
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0))
+static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry,
+ unsigned int dummy)
+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry,
+ struct nameidata *n)
+#else
+static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry)
+#endif
{
- int retVal;
+ struct yaffs_obj *obj;
+ struct inode *inode = NULL; /* NCB 2.5/2.6 needs NULL here */
- yaffs_dev_t *dev;
- yaffs_obj_t *obj;
+ struct yaffs_dev *dev = yaffs_inode_to_obj(dir)->my_dev;
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_unlink %d:%s\n"),
- (int)(dir->i_ino),
- dentry->d_name.name));
- obj = yaffs_InodeToObject(dir);
- dev = obj->my_dev;
+ if (current != yaffs_dev_to_lc(dev)->readdir_process)
+ yaffs_gross_lock(dev);
- yaffs_gross_lock(dev);
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_lookup for %d:%s",
+ yaffs_inode_to_obj(dir)->obj_id, dentry->d_name.name);
- retVal = yaffs_unlinker(obj, dentry->d_name.name);
+ obj = yaffs_find_by_name(yaffs_inode_to_obj(dir), dentry->d_name.name);
- if (retVal == YAFFS_OK) {
- dentry->d_inode->i_nlink--;
- dir->i_version++;
+ obj = yaffs_get_equivalent_obj(obj); /* in case it was a hardlink */
+
+ /* Can't hold gross lock when calling yaffs_get_inode() */
+ if (current != yaffs_dev_to_lc(dev)->readdir_process)
yaffs_gross_unlock(dev);
- mark_inode_dirty(dentry->d_inode);
- update_dir_time(dir);
- return 0;
+
+ if (obj) {
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_lookup found %d", obj->obj_id);
+
+ inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj);
+ } else {
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_lookup not found");
+
}
- yaffs_gross_unlock(dev);
- return -ENOTEMPTY;
+
+/* added NCB for 2.5/6 compatability - forces add even if inode is
+ * NULL which creates dentry hash */
+ d_add(dentry, inode);
+
+ return NULL;
}
/*
* Create a link...
*/
static int yaffs_link(struct dentry *old_dentry, struct inode *dir,
- struct dentry *dentry)
+ struct dentry *dentry)
{
struct inode *inode = old_dentry->d_inode;
- yaffs_obj_t *obj = NULL;
- yaffs_obj_t *link = NULL;
- yaffs_dev_t *dev;
+ struct yaffs_obj *obj = NULL;
+ struct yaffs_obj *link = NULL;
+ struct yaffs_dev *dev;
- T(YAFFS_TRACE_OS, (TSTR("yaffs_link\n")));
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_link");
- obj = yaffs_InodeToObject(inode);
+ obj = yaffs_inode_to_obj(inode);
dev = obj->my_dev;
yaffs_gross_lock(dev);
- if (!S_ISDIR(inode->i_mode)) /* Don't link directories */
- link = yaffs_link_obj(yaffs_InodeToObject(dir), dentry->d_name.name,
- obj);
+ if (!S_ISDIR(inode->i_mode)) /* Don't link directories */
+ link =
+ yaffs_link_obj(yaffs_inode_to_obj(dir), dentry->d_name.name,
+ obj);
if (link) {
- old_dentry->d_inode->i_nlink = yaffs_get_obj_link_count(obj);
+ set_nlink(old_dentry->d_inode, yaffs_get_obj_link_count(obj));
d_instantiate(dentry, old_dentry->d_inode);
atomic_inc(&old_dentry->d_inode->i_count);
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_link link count %d i_count %d\n"),
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_link link count %d i_count %d",
old_dentry->d_inode->i_nlink,
- atomic_read(&old_dentry->d_inode->i_count)));
+ atomic_read(&old_dentry->d_inode->i_count));
}
yaffs_gross_unlock(dev);
- if (link){
+ if (link) {
update_dir_time(dir);
return 0;
}
@@ -1862,19 +1420,28 @@ static int yaffs_link(struct dentry *old_dentry, struct inode *dir,
}
static int yaffs_symlink(struct inode *dir, struct dentry *dentry,
- const char *symname)
+ const char *symname)
{
- yaffs_obj_t *obj;
- yaffs_dev_t *dev;
+ struct yaffs_obj *obj;
+ struct yaffs_dev *dev;
uid_t uid = YCRED(current)->fsuid;
- gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid;
+ gid_t gid =
+ (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid;
- T(YAFFS_TRACE_OS, (TSTR("yaffs_symlink\n")));
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_symlink");
- dev = yaffs_InodeToObject(dir)->my_dev;
+ if (strnlen(dentry->d_name.name, YAFFS_MAX_NAME_LENGTH + 1) >
+ YAFFS_MAX_NAME_LENGTH)
+ return -ENAMETOOLONG;
+
+ if (strnlen(symname, YAFFS_MAX_ALIAS_LENGTH + 1) >
+ YAFFS_MAX_ALIAS_LENGTH)
+ return -ENAMETOOLONG;
+
+ dev = yaffs_inode_to_obj(dir)->my_dev;
yaffs_gross_lock(dev);
- obj = yaffs_create_symlink(yaffs_InodeToObject(dir), dentry->d_name.name,
- S_IFLNK | S_IRWXUGO, uid, gid, symname);
+ obj = yaffs_create_symlink(yaffs_inode_to_obj(dir), dentry->d_name.name,
+ S_IFLNK | S_IRWXUGO, uid, gid, symname);
yaffs_gross_unlock(dev);
if (obj) {
@@ -1883,41 +1450,15 @@ static int yaffs_symlink(struct inode *dir, struct dentry *dentry,
inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj);
d_instantiate(dentry, inode);
update_dir_time(dir);
- T(YAFFS_TRACE_OS, (TSTR("symlink created OK\n")));
+ yaffs_trace(YAFFS_TRACE_OS, "symlink created OK");
return 0;
} else {
- T(YAFFS_TRACE_OS, (TSTR("symlink not created\n")));
+ yaffs_trace(YAFFS_TRACE_OS, "symlink not created");
}
return -ENOMEM;
}
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34))
-static int yaffs_sync_object(struct file *file, int datasync)
-#else
-static int yaffs_sync_object(struct file *file, struct dentry *dentry,
- int datasync)
-#endif
-{
-
- yaffs_obj_t *obj;
- yaffs_dev_t *dev;
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34))
- struct dentry *dentry = file->f_path.dentry;
-#endif
-
- obj = yaffs_dentry_to_obj(dentry);
-
- dev = obj->my_dev;
-
- T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC,
- (TSTR("yaffs_sync_object\n")));
- yaffs_gross_lock(dev);
- yaffs_flush_file(obj, 1, datasync);
- yaffs_gross_unlock(dev);
- return 0;
-}
-
/*
* The VFS layer already does all the dentry stuff for rename.
*
@@ -1926,46 +1467,42 @@ static int yaffs_sync_object(struct file *file, struct dentry *dentry,
static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry)
{
- yaffs_dev_t *dev;
- int retVal = YAFFS_FAIL;
- yaffs_obj_t *target;
+ struct yaffs_dev *dev;
+ int ret_val = YAFFS_FAIL;
+ struct yaffs_obj *target;
- T(YAFFS_TRACE_OS, (TSTR("yaffs_rename\n")));
- dev = yaffs_InodeToObject(old_dir)->my_dev;
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_rename");
+ dev = yaffs_inode_to_obj(old_dir)->my_dev;
yaffs_gross_lock(dev);
/* Check if the target is an existing directory that is not empty. */
- target = yaffs_find_by_name(yaffs_InodeToObject(new_dir),
- new_dentry->d_name.name);
-
-
+ target = yaffs_find_by_name(yaffs_inode_to_obj(new_dir),
+ new_dentry->d_name.name);
if (target && target->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY &&
- !ylist_empty(&target->variant.dir_variant.children)) {
+ !list_empty(&target->variant.dir_variant.children)) {
- T(YAFFS_TRACE_OS, (TSTR("target is non-empty dir\n")));
+ yaffs_trace(YAFFS_TRACE_OS, "target is non-empty dir");
- retVal = YAFFS_FAIL;
+ ret_val = YAFFS_FAIL;
} else {
/* Now does unlinking internally using shadowing mechanism */
- T(YAFFS_TRACE_OS, (TSTR("calling yaffs_rename_obj\n")));
+ yaffs_trace(YAFFS_TRACE_OS, "calling yaffs_rename_obj");
- retVal = yaffs_rename_obj(yaffs_InodeToObject(old_dir),
- old_dentry->d_name.name,
- yaffs_InodeToObject(new_dir),
- new_dentry->d_name.name);
+ ret_val = yaffs_rename_obj(yaffs_inode_to_obj(old_dir),
+ old_dentry->d_name.name,
+ yaffs_inode_to_obj(new_dir),
+ new_dentry->d_name.name);
}
yaffs_gross_unlock(dev);
- if (retVal == YAFFS_OK) {
- if (target) {
- new_dentry->d_inode->i_nlink--;
- mark_inode_dirty(new_dentry->d_inode);
- }
-
+ if (ret_val == YAFFS_OK) {
+ if (target)
+ inode_dec_link_count(new_dentry->d_inode);
+
update_dir_time(old_dir);
- if(old_dir != new_dir)
+ if (old_dir != new_dir)
update_dir_time(new_dir);
return 0;
} else {
@@ -1973,338 +1510,427 @@ static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry,
}
}
-static int yaffs_setattr(struct dentry *dentry, struct iattr *attr)
-{
- struct inode *inode = dentry->d_inode;
- int error = 0;
- yaffs_dev_t *dev;
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_setattr of object %d\n"),
- yaffs_InodeToObject(inode)->obj_id));
-
- /* Fail if a requested resize >= 2GB */
- if (attr->ia_valid & ATTR_SIZE &&
- (attr->ia_size >> 31))
- error = -EINVAL;
-
- if (error == 0)
- error = inode_change_ok(inode, attr);
- if (error == 0) {
- int result;
- if (!error){
- error = yaffs_vfs_setattr(inode, attr);
- T(YAFFS_TRACE_OS,(TSTR("inode_setattr called\n")));
- if (attr->ia_valid & ATTR_SIZE){
- yaffs_vfs_setsize(inode,attr->ia_size);
- inode->i_blocks = (inode->i_size + 511) >> 9;
- }
- }
- dev = yaffs_InodeToObject(inode)->my_dev;
- if (attr->ia_valid & ATTR_SIZE){
- T(YAFFS_TRACE_OS,(TSTR("resize to %d(%x)\n"),
- (int)(attr->ia_size),(int)(attr->ia_size)));
- }
- yaffs_gross_lock(dev);
- result = yaffs_set_attribs(yaffs_InodeToObject(inode), attr);
- if(result == YAFFS_OK) {
- error = 0;
- } else {
- error = -EPERM;
- }
- yaffs_gross_unlock(dev);
- }
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_setattr done returning %d\n"),error));
+static int yaffs_unlink(struct inode *dir, struct dentry *dentry)
+{
+ int ret_val;
- return error;
-}
+ struct yaffs_dev *dev;
+ struct yaffs_obj *obj;
-#ifdef CONFIG_YAFFS_XATTR
-int yaffs_setxattr(struct dentry *dentry, const char *name,
- const void *value, size_t size, int flags)
-{
- struct inode *inode = dentry->d_inode;
- int error = 0;
- yaffs_dev_t *dev;
- yaffs_obj_t *obj = yaffs_InodeToObject(inode);
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_unlink %d:%s",
+ (int)(dir->i_ino), dentry->d_name.name);
+ obj = yaffs_inode_to_obj(dir);
+ dev = obj->my_dev;
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_setxattr of object %d\n"),
- obj->obj_id));
+ yaffs_gross_lock(dev);
+ ret_val = yaffs_unlinker(obj, dentry->d_name.name);
- if (error == 0) {
- int result;
- dev = obj->my_dev;
- yaffs_gross_lock(dev);
- result = yaffs_set_xattrib(obj, name, value, size, flags);
- if(result == YAFFS_OK)
- error = 0;
- else if(result < 0)
- error = result;
+ if (ret_val == YAFFS_OK) {
+ inode_dec_link_count(dentry->d_inode);
+ dir->i_version++;
yaffs_gross_unlock(dev);
-
+ update_dir_time(dir);
+ return 0;
}
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_setxattr done returning %d\n"),error));
-
- return error;
+ yaffs_gross_unlock(dev);
+ return -ENOTEMPTY;
}
-ssize_t yaffs_getxattr(struct dentry *dentry, const char *name, void *buff,
- size_t size)
-{
- struct inode *inode = dentry->d_inode;
- int error = 0;
- yaffs_dev_t *dev;
- yaffs_obj_t *obj = yaffs_InodeToObject(inode);
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_getxattr \"%s\" from object %d\n"),
- name, obj->obj_id));
+static const struct inode_operations yaffs_dir_inode_operations = {
+ .create = yaffs_create,
+ .lookup = yaffs_lookup,
+ .link = yaffs_link,
+ .unlink = yaffs_unlink,
+ .symlink = yaffs_symlink,
+ .mkdir = yaffs_mkdir,
+ .rmdir = yaffs_unlink,
+ .mknod = yaffs_mknod,
+ .rename = yaffs_rename,
+ .setattr = yaffs_setattr,
+ .setxattr = yaffs_setxattr,
+ .getxattr = yaffs_getxattr,
+ .listxattr = yaffs_listxattr,
+ .removexattr = yaffs_removexattr,
+};
- if (error == 0) {
- dev = obj->my_dev;
- yaffs_gross_lock(dev);
- error = yaffs_get_xattrib(obj, name, buff, size);
- yaffs_gross_unlock(dev);
+/*-----------------------------------------------------------------*/
+/* Directory search context allows us to unlock access to yaffs during
+ * filldir without causing problems with the directory being modified.
+ * This is similar to the tried and tested mechanism used in yaffs direct.
+ *
+ * A search context iterates along a doubly linked list of siblings in the
+ * directory. If the iterating object is deleted then this would corrupt
+ * the list iteration, likely causing a crash. The search context avoids
+ * this by using the remove_obj_fn to move the search context to the
+ * next object before the object is deleted.
+ *
+ * Many readdirs (and thus seach conexts) may be alive simulateously so
+ * each struct yaffs_dev has a list of these.
+ *
+ * A seach context lives for the duration of a readdir.
+ *
+ * All these functions must be called while yaffs is locked.
+ */
- }
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_getxattr done returning %d\n"),error));
+struct yaffs_search_context {
+ struct yaffs_dev *dev;
+ struct yaffs_obj *dir_obj;
+ struct yaffs_obj *next_return;
+ struct list_head others;
+};
- return error;
+/*
+ * yaffs_new_search() creates a new search context, initialises it and
+ * adds it to the device's search context list.
+ *
+ * Called at start of readdir.
+ */
+static struct yaffs_search_context *yaffs_new_search(struct yaffs_obj *dir)
+{
+ struct yaffs_dev *dev = dir->my_dev;
+ struct yaffs_search_context *sc =
+ kmalloc(sizeof(struct yaffs_search_context), GFP_NOFS);
+ if (sc) {
+ sc->dir_obj = dir;
+ sc->dev = dev;
+ if (list_empty(&sc->dir_obj->variant.dir_variant.children))
+ sc->next_return = NULL;
+ else
+ sc->next_return =
+ list_entry(dir->variant.dir_variant.children.next,
+ struct yaffs_obj, siblings);
+ INIT_LIST_HEAD(&sc->others);
+ list_add(&sc->others, &(yaffs_dev_to_lc(dev)->search_contexts));
+ }
+ return sc;
}
-int yaffs_removexattr(struct dentry *dentry, const char *name)
+/*
+ * yaffs_search_end() disposes of a search context and cleans up.
+ */
+static void yaffs_search_end(struct yaffs_search_context *sc)
{
- struct inode *inode = dentry->d_inode;
- int error = 0;
- yaffs_dev_t *dev;
- yaffs_obj_t *obj = yaffs_InodeToObject(inode);
-
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_removexattr of object %d\n"),
- obj->obj_id));
+ if (sc) {
+ list_del(&sc->others);
+ kfree(sc);
+ }
+}
+/*
+ * yaffs_search_advance() moves a search context to the next object.
+ * Called when the search iterates or when an object removal causes
+ * the search context to be moved to the next object.
+ */
+static void yaffs_search_advance(struct yaffs_search_context *sc)
+{
+ if (!sc)
+ return;
- if (error == 0) {
- int result;
- dev = obj->my_dev;
- yaffs_gross_lock(dev);
- result = yaffs_remove_xattrib(obj, name);
- if(result == YAFFS_OK)
- error = 0;
- else if(result < 0)
- error = result;
- yaffs_gross_unlock(dev);
+ if (sc->next_return == NULL ||
+ list_empty(&sc->dir_obj->variant.dir_variant.children))
+ sc->next_return = NULL;
+ else {
+ struct list_head *next = sc->next_return->siblings.next;
+ if (next == &sc->dir_obj->variant.dir_variant.children)
+ sc->next_return = NULL; /* end of list */
+ else
+ sc->next_return =
+ list_entry(next, struct yaffs_obj, siblings);
}
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_removexattr done returning %d\n"),error));
-
- return error;
}
-ssize_t yaffs_listxattr(struct dentry *dentry, char *buff, size_t size)
+/*
+ * yaffs_remove_obj_callback() is called when an object is unlinked.
+ * We check open search contexts and advance any which are currently
+ * on the object being iterated.
+ */
+static void yaffs_remove_obj_callback(struct yaffs_obj *obj)
{
- struct inode *inode = dentry->d_inode;
- int error = 0;
- yaffs_dev_t *dev;
- yaffs_obj_t *obj = yaffs_InodeToObject(inode);
-
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_listxattr of object %d\n"),
- obj->obj_id));
-
- if (error == 0) {
- dev = obj->my_dev;
- yaffs_gross_lock(dev);
- error = yaffs_list_xattrib(obj, buff, size);
- yaffs_gross_unlock(dev);
+ struct list_head *i;
+ struct yaffs_search_context *sc;
+ struct list_head *search_contexts =
+ &(yaffs_dev_to_lc(obj->my_dev)->search_contexts);
+ /* Iterate through the directory search contexts.
+ * If any are currently on the object being removed, then advance
+ * the search context to the next object to prevent a hanging pointer.
+ */
+ list_for_each(i, search_contexts) {
+ sc = list_entry(i, struct yaffs_search_context, others);
+ if (sc->next_return == obj)
+ yaffs_search_advance(sc);
}
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_listxattr done returning %d\n"),error));
- return error;
}
-#endif
+/*-----------------------------------------------------------------*/
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
-static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf)
-{
- yaffs_dev_t *dev = yaffs_dentry_to_obj(dentry)->my_dev;
- struct super_block *sb = dentry->d_sb;
-#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
-static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf)
-{
- yaffs_dev_t *dev = yaffs_SuperToDevice(sb);
-#else
-static int yaffs_statfs(struct super_block *sb, struct statfs *buf)
+static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir)
{
- yaffs_dev_t *dev = yaffs_SuperToDevice(sb);
-#endif
+ struct yaffs_obj *obj;
+ struct yaffs_dev *dev;
+ struct yaffs_search_context *sc;
+ struct inode *inode = f->f_dentry->d_inode;
+ unsigned long offset, curoffs;
+ struct yaffs_obj *l;
+ int ret_val = 0;
+
+ char name[YAFFS_MAX_NAME_LENGTH + 1];
- T(YAFFS_TRACE_OS, (TSTR("yaffs_statfs\n")));
+ obj = yaffs_dentry_to_obj(f->f_dentry);
+ dev = obj->my_dev;
yaffs_gross_lock(dev);
- buf->f_type = YAFFS_MAGIC;
- buf->f_bsize = sb->s_blocksize;
- buf->f_namelen = 255;
+ yaffs_dev_to_lc(dev)->readdir_process = current;
- if (dev->data_bytes_per_chunk & (dev->data_bytes_per_chunk - 1)) {
- /* Do this if chunk size is not a power of 2 */
+ offset = f->f_pos;
- uint64_t bytesInDev;
- uint64_t bytesFree;
+ sc = yaffs_new_search(obj);
+ if (!sc) {
+ ret_val = -ENOMEM;
+ goto out;
+ }
- bytesInDev = ((uint64_t)((dev->param.end_block - dev->param.start_block + 1))) *
- ((uint64_t)(dev->param.chunks_per_block * dev->data_bytes_per_chunk));
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_readdir: starting at %d", (int)offset);
- do_div(bytesInDev, sb->s_blocksize); /* bytesInDev becomes the number of blocks */
- buf->f_blocks = bytesInDev;
+ if (offset == 0) {
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_readdir: entry . ino %d",
+ (int)inode->i_ino);
+ yaffs_gross_unlock(dev);
+ if (filldir(dirent, ".", 1, offset, inode->i_ino, DT_DIR) < 0) {
+ yaffs_gross_lock(dev);
+ goto out;
+ }
+ yaffs_gross_lock(dev);
+ offset++;
+ f->f_pos++;
+ }
+ if (offset == 1) {
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_readdir: entry .. ino %d",
+ (int)f->f_dentry->d_parent->d_inode->i_ino);
+ yaffs_gross_unlock(dev);
+ if (filldir(dirent, "..", 2, offset,
+ f->f_dentry->d_parent->d_inode->i_ino,
+ DT_DIR) < 0) {
+ yaffs_gross_lock(dev);
+ goto out;
+ }
+ yaffs_gross_lock(dev);
+ offset++;
+ f->f_pos++;
+ }
- bytesFree = ((uint64_t)(yaffs_get_n_free_chunks(dev))) *
- ((uint64_t)(dev->data_bytes_per_chunk));
+ curoffs = 1;
- do_div(bytesFree, sb->s_blocksize);
+ /* If the directory has changed since the open or last call to
+ readdir, rewind to after the 2 canned entries. */
+ if (f->f_version != inode->i_version) {
+ offset = 2;
+ f->f_pos = offset;
+ f->f_version = inode->i_version;
+ }
- buf->f_bfree = bytesFree;
+ while (sc->next_return) {
+ curoffs++;
+ l = sc->next_return;
+ if (curoffs >= offset) {
+ int this_inode = yaffs_get_obj_inode(l);
+ int this_type = yaffs_get_obj_type(l);
- } else if (sb->s_blocksize > dev->data_bytes_per_chunk) {
+ yaffs_get_obj_name(l, name, YAFFS_MAX_NAME_LENGTH + 1);
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_readdir: %s inode %d",
+ name, yaffs_get_obj_inode(l));
- buf->f_blocks =
- (dev->param.end_block - dev->param.start_block + 1) *
- dev->param.chunks_per_block /
- (sb->s_blocksize / dev->data_bytes_per_chunk);
- buf->f_bfree =
- yaffs_get_n_free_chunks(dev) /
- (sb->s_blocksize / dev->data_bytes_per_chunk);
- } else {
- buf->f_blocks =
- (dev->param.end_block - dev->param.start_block + 1) *
- dev->param.chunks_per_block *
- (dev->data_bytes_per_chunk / sb->s_blocksize);
+ yaffs_gross_unlock(dev);
- buf->f_bfree =
- yaffs_get_n_free_chunks(dev) *
- (dev->data_bytes_per_chunk / sb->s_blocksize);
- }
+ if (filldir(dirent,
+ name,
+ strlen(name),
+ offset, this_inode, this_type) < 0) {
+ yaffs_gross_lock(dev);
+ goto out;
+ }
- buf->f_files = 0;
- buf->f_ffree = 0;
- buf->f_bavail = buf->f_bfree;
+ yaffs_gross_lock(dev);
+ offset++;
+ f->f_pos++;
+ }
+ yaffs_search_advance(sc);
+ }
+
+out:
+ yaffs_search_end(sc);
+ yaffs_dev_to_lc(dev)->readdir_process = NULL;
yaffs_gross_unlock(dev);
- return 0;
-}
+ return ret_val;
+}
+static const struct file_operations yaffs_dir_operations = {
+ .read = generic_read_dir,
+ .readdir = yaffs_readdir,
+ .fsync = yaffs_sync_object,
+ .llseek = generic_file_llseek,
+};
-static void yaffs_flush_inodes(struct super_block *sb)
+static void yaffs_fill_inode_from_obj(struct inode *inode,
+ struct yaffs_obj *obj)
{
- struct inode *iptr;
- yaffs_obj_t *obj;
-
- list_for_each_entry(iptr,&sb->s_inodes, i_sb_list){
- obj = yaffs_InodeToObject(iptr);
- if(obj){
- T(YAFFS_TRACE_OS, (TSTR("flushing obj %d\n"),
- obj->obj_id));
- yaffs_flush_file(obj,1,0);
- }
- }
-}
+ if (inode && obj) {
+ /* Check mode against the variant type and attempt to repair if broken. */
+ u32 mode = obj->yst_mode;
+ switch (obj->variant_type) {
+ case YAFFS_OBJECT_TYPE_FILE:
+ if (!S_ISREG(mode)) {
+ obj->yst_mode &= ~S_IFMT;
+ obj->yst_mode |= S_IFREG;
+ }
-static void yaffs_flush_super(struct super_block *sb, int do_checkpoint)
-{
- yaffs_dev_t *dev = yaffs_SuperToDevice(sb);
- if(!dev)
- return;
-
- yaffs_flush_inodes(sb);
- yaffs_update_dirty_dirs(dev);
- yaffs_flush_whole_cache(dev);
- if(do_checkpoint)
- yaffs_checkpoint_save(dev);
-}
+ break;
+ case YAFFS_OBJECT_TYPE_SYMLINK:
+ if (!S_ISLNK(mode)) {
+ obj->yst_mode &= ~S_IFMT;
+ obj->yst_mode |= S_IFLNK;
+ }
+ break;
+ case YAFFS_OBJECT_TYPE_DIRECTORY:
+ if (!S_ISDIR(mode)) {
+ obj->yst_mode &= ~S_IFMT;
+ obj->yst_mode |= S_IFDIR;
+ }
-static unsigned yaffs_bg_gc_urgency(yaffs_dev_t *dev)
-{
- unsigned erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block;
- struct yaffs_LinuxContext *context = yaffs_dev_to_lc(dev);
- unsigned scatteredFree = 0; /* Free chunks not in an erased block */
+ break;
+ case YAFFS_OBJECT_TYPE_UNKNOWN:
+ case YAFFS_OBJECT_TYPE_HARDLINK:
+ case YAFFS_OBJECT_TYPE_SPECIAL:
+ default:
+ /* TODO? */
+ break;
+ }
- if(erasedChunks < dev->n_free_chunks)
- scatteredFree = (dev->n_free_chunks - erasedChunks);
+ inode->i_flags |= S_NOATIME;
- if(!context->bgRunning)
- return 0;
- else if(scatteredFree < (dev->param.chunks_per_block * 2))
- return 0;
- else if(erasedChunks > dev->n_free_chunks/2)
- return 0;
- else if(erasedChunks > dev->n_free_chunks/4)
- return 1;
- else
- return 2;
-}
+ inode->i_ino = obj->obj_id;
+ inode->i_mode = obj->yst_mode;
+ inode->i_uid = obj->yst_uid;
+ inode->i_gid = obj->yst_gid;
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19))
+ inode->i_blksize = inode->i_sb->s_blocksize;
+#endif
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
-static int yaffs_do_sync_fs(struct super_block *sb,
- int request_checkpoint)
-{
+ inode->i_rdev = old_decode_dev(obj->yst_rdev);
+ inode->i_atime.tv_sec = (time_t) (obj->yst_atime);
+ inode->i_atime.tv_nsec = 0;
+ inode->i_mtime.tv_sec = (time_t) obj->yst_mtime;
+ inode->i_mtime.tv_nsec = 0;
+ inode->i_ctime.tv_sec = (time_t) obj->yst_ctime;
+ inode->i_ctime.tv_nsec = 0;
+#else
+ inode->i_rdev = obj->yst_rdev;
+ inode->i_atime = obj->yst_atime;
+ inode->i_mtime = obj->yst_mtime;
+ inode->i_ctime = obj->yst_ctime;
+#endif
+ inode->i_size = yaffs_get_obj_length(obj);
+ inode->i_blocks = (inode->i_size + 511) >> 9;
- yaffs_dev_t *dev = yaffs_SuperToDevice(sb);
- unsigned int oneshot_checkpoint = (yaffs_auto_checkpoint & 4);
- unsigned gc_urgent = yaffs_bg_gc_urgency(dev);
- int do_checkpoint;
+ set_nlink(inode, yaffs_get_obj_link_count(obj));
- T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC | YAFFS_TRACE_BACKGROUND,
- (TSTR("yaffs_do_sync_fs: gc-urgency %d %s %s%s\n"),
- gc_urgent,
- sb->s_dirt ? "dirty" : "clean",
- request_checkpoint ? "checkpoint requested" : "no checkpoint",
- oneshot_checkpoint ? " one-shot" : "" ));
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_fill_inode mode %x uid %d gid %d size %lld count %d",
+ inode->i_mode, inode->i_uid, inode->i_gid,
+ inode->i_size, atomic_read(&inode->i_count));
- yaffs_gross_lock(dev);
- do_checkpoint = ((request_checkpoint && !gc_urgent) ||
- oneshot_checkpoint) &&
- !dev->is_checkpointed;
+ switch (obj->yst_mode & S_IFMT) {
+ default: /* fifo, device or socket */
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+ init_special_inode(inode, obj->yst_mode,
+ old_decode_dev(obj->yst_rdev));
+#else
+ init_special_inode(inode, obj->yst_mode,
+ (dev_t) (obj->yst_rdev));
+#endif
+ break;
+ case S_IFREG: /* file */
+ inode->i_op = &yaffs_file_inode_operations;
+ inode->i_fop = &yaffs_file_operations;
+ inode->i_mapping->a_ops =
+ &yaffs_file_address_operations;
+ break;
+ case S_IFDIR: /* directory */
+ inode->i_op = &yaffs_dir_inode_operations;
+ inode->i_fop = &yaffs_dir_operations;
+ break;
+ case S_IFLNK: /* symlink */
+ inode->i_op = &yaffs_symlink_inode_operations;
+ break;
+ }
- if (sb->s_dirt || do_checkpoint) {
- yaffs_flush_super(sb, !dev->is_checkpointed && do_checkpoint);
- sb->s_dirt = 0;
- if(oneshot_checkpoint)
- yaffs_auto_checkpoint &= ~4;
+ yaffs_inode_to_obj_lv(inode) = obj;
+
+ obj->my_inode = inode;
+
+ } else {
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_fill_inode invalid parameters");
}
- yaffs_gross_unlock(dev);
- return 0;
}
+
+
/*
* yaffs background thread functions .
* yaffs_bg_thread_fn() the thread function
* yaffs_bg_start() launches the background thread.
* yaffs_bg_stop() cleans up the background thread.
*
- * NB:
+ * NB:
* The thread should only run after the yaffs is initialised
* The thread should be stopped before yaffs is unmounted.
* The thread should not do any writing while the fs is in read only.
*/
+static unsigned yaffs_bg_gc_urgency(struct yaffs_dev *dev)
+{
+ unsigned erased_chunks =
+ dev->n_erased_blocks * dev->param.chunks_per_block;
+ struct yaffs_linux_context *context = yaffs_dev_to_lc(dev);
+ unsigned scattered = 0; /* Free chunks not in an erased block */
+
+ if (erased_chunks < dev->n_free_chunks)
+ scattered = (dev->n_free_chunks - erased_chunks);
+
+ if (!context->bg_running)
+ return 0;
+ else if (scattered < (dev->param.chunks_per_block * 2))
+ return 0;
+ else if (erased_chunks > dev->n_free_chunks / 2)
+ return 0;
+ else if (erased_chunks > dev->n_free_chunks / 4)
+ return 1;
+ else
+ return 2;
+}
+
#ifdef YAFFS_COMPILE_BACKGROUND
void yaffs_background_waker(unsigned long data)
@@ -2314,74 +1940,74 @@ void yaffs_background_waker(unsigned long data)
static int yaffs_bg_thread_fn(void *data)
{
- yaffs_dev_t *dev = (yaffs_dev_t *)data;
- struct yaffs_LinuxContext *context = yaffs_dev_to_lc(dev);
+ struct yaffs_dev *dev = (struct yaffs_dev *)data;
+ struct yaffs_linux_context *context = yaffs_dev_to_lc(dev);
unsigned long now = jiffies;
unsigned long next_dir_update = now;
unsigned long next_gc = now;
unsigned long expires;
unsigned int urgency;
- int gcResult;
+ int gc_result;
struct timer_list timer;
- T(YAFFS_TRACE_BACKGROUND,
- (TSTR("yaffs_background starting for dev %p\n"),
- (void *)dev));
+ yaffs_trace(YAFFS_TRACE_BACKGROUND,
+ "yaffs_background starting for dev %p", (void *)dev);
#ifdef YAFFS_COMPILE_FREEZER
set_freezable();
#endif
- while(context->bgRunning){
- T(YAFFS_TRACE_BACKGROUND,
- (TSTR("yaffs_background\n")));
+ while (context->bg_running) {
+ yaffs_trace(YAFFS_TRACE_BACKGROUND, "yaffs_background");
- if(kthread_should_stop())
+ if (kthread_should_stop())
break;
#ifdef YAFFS_COMPILE_FREEZER
- if(try_to_freeze())
+ if (try_to_freeze())
continue;
#endif
yaffs_gross_lock(dev);
now = jiffies;
- if(time_after(now, next_dir_update) && yaffs_bg_enable){
+ if (time_after(now, next_dir_update) && yaffs_bg_enable) {
yaffs_update_dirty_dirs(dev);
next_dir_update = now + HZ;
}
- if(time_after(now,next_gc) && yaffs_bg_enable){
- if(!dev->is_checkpointed){
+ if (time_after(now, next_gc) && yaffs_bg_enable) {
+ if (!dev->is_checkpointed) {
urgency = yaffs_bg_gc_urgency(dev);
- gcResult = yaffs_bg_gc(dev, urgency);
- if(urgency > 1)
- next_gc = now + HZ/20+1;
- else if(urgency > 0)
- next_gc = now + HZ/10+1;
+ gc_result = yaffs_bg_gc(dev, urgency);
+ if (urgency > 1)
+ next_gc = now + HZ / 20 + 1;
+ else if (urgency > 0)
+ next_gc = now + HZ / 10 + 1;
else
next_gc = now + HZ * 2;
- } else /*
- * gc not running so set to next_dir_update
- * to cut down on wake ups
- */
+ } else {
+ /*
+ * gc not running so set to next_dir_update
+ * to cut down on wake ups
+ */
next_gc = next_dir_update;
+ }
}
yaffs_gross_unlock(dev);
#if 1
expires = next_dir_update;
- if (time_before(next_gc,expires))
+ if (time_before(next_gc, expires))
expires = next_gc;
- if(time_before(expires,now))
+ if (time_before(expires, now))
expires = now + HZ;
Y_INIT_TIMER(&timer);
- timer.expires = expires+1;
- timer.data = (unsigned long) current;
+ timer.expires = expires + 1;
+ timer.data = (unsigned long)current;
timer.function = yaffs_background_waker;
- set_current_state(TASK_INTERRUPTIBLE);
+ set_current_state(TASK_INTERRUPTIBLE);
add_timer(&timer);
schedule();
del_timer_sync(&timer);
@@ -2393,36 +2019,37 @@ static int yaffs_bg_thread_fn(void *data)
return 0;
}
-static int yaffs_bg_start(yaffs_dev_t *dev)
+static int yaffs_bg_start(struct yaffs_dev *dev)
{
int retval = 0;
- struct yaffs_LinuxContext *context = yaffs_dev_to_lc(dev);
+ struct yaffs_linux_context *context = yaffs_dev_to_lc(dev);
- if(dev->read_only)
+ if (dev->read_only)
return -1;
- context->bgRunning = 1;
+ context->bg_running = 1;
- context->bgThread = kthread_run(yaffs_bg_thread_fn,
- (void *)dev,"yaffs-bg-%d",context->mount_id);
+ context->bg_thread = kthread_run(yaffs_bg_thread_fn,
+ (void *)dev, "yaffs-bg-%d",
+ context->mount_id);
- if(IS_ERR(context->bgThread)){
- retval = PTR_ERR(context->bgThread);
- context->bgThread = NULL;
- context->bgRunning = 0;
+ if (IS_ERR(context->bg_thread)) {
+ retval = PTR_ERR(context->bg_thread);
+ context->bg_thread = NULL;
+ context->bg_running = 0;
}
return retval;
}
-static void yaffs_bg_stop(yaffs_dev_t *dev)
+static void yaffs_bg_stop(struct yaffs_dev *dev)
{
- struct yaffs_LinuxContext *ctxt = yaffs_dev_to_lc(dev);
+ struct yaffs_linux_context *ctxt = yaffs_dev_to_lc(dev);
- ctxt->bgRunning = 0;
+ ctxt->bg_running = 0;
- if( ctxt->bgThread){
- kthread_stop(ctxt->bgThread);
- ctxt->bgThread = NULL;
+ if (ctxt->bg_thread) {
+ kthread_stop(ctxt->bg_thread);
+ ctxt->bg_thread = NULL;
}
}
#else
@@ -2431,177 +2058,445 @@ static int yaffs_bg_thread_fn(void *data)
return 0;
}
-static int yaffs_bg_start(yaffs_dev_t *dev)
+static int yaffs_bg_start(struct yaffs_dev *dev)
{
return 0;
}
-static void yaffs_bg_stop(yaffs_dev_t *dev)
+static void yaffs_bg_stop(struct yaffs_dev *dev)
{
}
#endif
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
-static void yaffs_write_super(struct super_block *sb)
-#else
-static int yaffs_write_super(struct super_block *sb)
-#endif
+static void yaffs_flush_inodes(struct super_block *sb)
{
- unsigned request_checkpoint = (yaffs_auto_checkpoint >= 2);
+ struct inode *iptr;
+ struct yaffs_obj *obj;
+
+ list_for_each_entry(iptr, &sb->s_inodes, i_sb_list) {
+ obj = yaffs_inode_to_obj(iptr);
+ if (obj) {
+ yaffs_trace(YAFFS_TRACE_OS,
+ "flushing obj %d",
+ obj->obj_id);
+ yaffs_flush_file(obj, 1, 0);
+ }
+ }
+}
- T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC | YAFFS_TRACE_BACKGROUND,
- (TSTR("yaffs_write_super%s\n"),
- request_checkpoint ? " checkpt" : ""));
+static void yaffs_flush_super(struct super_block *sb, int do_checkpoint)
+{
+ struct yaffs_dev *dev = yaffs_super_to_dev(sb);
+ if (!dev)
+ return;
- yaffs_do_sync_fs(sb, request_checkpoint);
+ yaffs_flush_inodes(sb);
+ yaffs_update_dirty_dirs(dev);
+ yaffs_flush_whole_cache(dev);
+ if (do_checkpoint)
+ yaffs_checkpoint_save(dev);
+}
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18))
- return 0;
-#endif
+static LIST_HEAD(yaffs_context_list);
+struct mutex yaffs_context_lock;
+
+static void yaffs_put_super(struct super_block *sb)
+{
+ struct yaffs_dev *dev = yaffs_super_to_dev(sb);
+ struct mtd_info *mtd = yaffs_dev_to_mtd(dev);
+
+ yaffs_trace(YAFFS_TRACE_OS | YAFFS_TRACE_ALWAYS,
+ "yaffs_put_super");
+
+ yaffs_trace(YAFFS_TRACE_OS | YAFFS_TRACE_BACKGROUND,
+ "Shutting down yaffs background thread");
+ yaffs_bg_stop(dev);
+ yaffs_trace(YAFFS_TRACE_OS | YAFFS_TRACE_BACKGROUND,
+ "yaffs background thread shut down");
+
+ yaffs_gross_lock(dev);
+
+ yaffs_flush_super(sb, 1);
+
+ yaffs_deinitialise(dev);
+
+ yaffs_gross_unlock(dev);
+
+ mutex_lock(&yaffs_context_lock);
+ list_del_init(&(yaffs_dev_to_lc(dev)->context_list));
+ mutex_unlock(&yaffs_context_lock);
+
+ if (yaffs_dev_to_lc(dev)->spare_buffer) {
+ kfree(yaffs_dev_to_lc(dev)->spare_buffer);
+ yaffs_dev_to_lc(dev)->spare_buffer = NULL;
+ }
+
+ kfree(dev);
+
+ yaffs_put_mtd_device(mtd);
+
+ yaffs_trace(YAFFS_TRACE_OS | YAFFS_TRACE_ALWAYS,
+ "yaffs_put_super done");
}
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
-static int yaffs_sync_fs(struct super_block *sb, int wait)
-#else
-static int yaffs_sync_fs(struct super_block *sb)
-#endif
+static unsigned yaffs_gc_control_callback(struct yaffs_dev *dev)
{
- unsigned request_checkpoint = (yaffs_auto_checkpoint >= 1);
+ return yaffs_gc_control;
+}
- T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC,
- (TSTR("yaffs_sync_fs%s\n"),
- request_checkpoint ? " checkpt" : ""));
- yaffs_do_sync_fs(sb, request_checkpoint);
+#ifdef YAFFS_COMPILE_EXPORTFS
- return 0;
+static struct inode *yaffs2_nfs_get_inode(struct super_block *sb, uint64_t ino,
+ uint32_t generation)
+{
+ return Y_IGET(sb, ino);
}
-#ifdef YAFFS_USE_OWN_IGET
+static struct dentry *yaffs2_fh_to_dentry(struct super_block *sb,
+ struct fid *fid, int fh_len,
+ int fh_type)
+{
+ return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
+ yaffs2_nfs_get_inode);
+}
-static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino)
+static struct dentry *yaffs2_fh_to_parent(struct super_block *sb,
+ struct fid *fid, int fh_len,
+ int fh_type)
+{
+ return generic_fh_to_parent(sb, fid, fh_len, fh_type,
+ yaffs2_nfs_get_inode);
+}
+
+struct dentry *yaffs2_get_parent(struct dentry *dentry)
{
+
+ struct super_block *sb = dentry->d_inode->i_sb;
+ struct dentry *parent = ERR_PTR(-ENOENT);
struct inode *inode;
- yaffs_obj_t *obj;
- yaffs_dev_t *dev = yaffs_SuperToDevice(sb);
+ unsigned long parent_ino;
+ struct yaffs_obj *d_obj;
+ struct yaffs_obj *parent_obj;
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_iget for %lu\n"), ino));
+ d_obj = yaffs_inode_to_obj(dentry->d_inode);
- inode = iget_locked(sb, ino);
- if (!inode)
- return ERR_PTR(-ENOMEM);
- if (!(inode->i_state & I_NEW))
- return inode;
+ if (d_obj) {
+ parent_obj = d_obj->parent;
+ if (parent_obj) {
+ parent_ino = yaffs_get_obj_inode(parent_obj);
+ inode = Y_IGET(sb, parent_ino);
- /* NB This is called as a side effect of other functions, but
- * we had to release the lock to prevent deadlocks, so
- * need to lock again.
- */
+ if (IS_ERR(inode)) {
+ parent = ERR_CAST(inode);
+ } else {
+ parent = d_obtain_alias(inode);
+ if (!IS_ERR(parent)) {
+ parent = ERR_PTR(-ENOMEM);
+ iput(inode);
+ }
+ }
+ }
+ }
- yaffs_gross_lock(dev);
+ return parent;
+}
- obj = yaffs_find_by_number(dev, inode->i_ino);
+/* Just declare a zero structure as a NULL value implies
+ * using the default functions of exportfs.
+ */
- yaffs_fill_inode_from_obj(inode, obj);
+static struct export_operations yaffs_export_ops = {
+ .fh_to_dentry = yaffs2_fh_to_dentry,
+ .fh_to_parent = yaffs2_fh_to_parent,
+ .get_parent = yaffs2_get_parent,
+};
- yaffs_gross_unlock(dev);
+#endif
- unlock_new_inode(inode);
- return inode;
+static void yaffs_unstitch_obj(struct inode *inode, struct yaffs_obj *obj)
+{
+ /* Clear the association between the inode and
+ * the struct yaffs_obj.
+ */
+ obj->my_inode = NULL;
+ yaffs_inode_to_obj_lv(inode) = NULL;
+
+ /* If the object freeing was deferred, then the real
+ * free happens now.
+ * This should fix the inode inconsistency problem.
+ */
+ yaffs_handle_defered_free(obj);
}
+#ifdef YAFFS_HAS_EVICT_INODE
+/* yaffs_evict_inode combines into one operation what was previously done in
+ * yaffs_clear_inode() and yaffs_delete_inode()
+ *
+ */
+static void yaffs_evict_inode(struct inode *inode)
+{
+ struct yaffs_obj *obj;
+ struct yaffs_dev *dev;
+ int deleteme = 0;
+
+ obj = yaffs_inode_to_obj(inode);
+
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_evict_inode: ino %d, count %d %s",
+ (int)inode->i_ino, atomic_read(&inode->i_count),
+ obj ? "object exists" : "null object");
+
+ if (!inode->i_nlink && !is_bad_inode(inode))
+ deleteme = 1;
+ truncate_inode_pages(&inode->i_data, 0);
+ Y_CLEAR_INODE(inode);
+
+ if (deleteme && obj) {
+ dev = obj->my_dev;
+ yaffs_gross_lock(dev);
+ yaffs_del_obj(obj);
+ yaffs_gross_unlock(dev);
+ }
+ if (obj) {
+ dev = obj->my_dev;
+ yaffs_gross_lock(dev);
+ yaffs_unstitch_obj(inode, obj);
+ yaffs_gross_unlock(dev);
+ }
+}
#else
-static void yaffs_read_inode(struct inode *inode)
+/* clear is called to tell the fs to release any per-inode data it holds.
+ * The object might still exist on disk and is just being thrown out of the cache
+ * or else the object has actually been deleted and we're being called via
+ * the chain
+ * yaffs_delete_inode() -> clear_inode()->yaffs_clear_inode()
+ */
+
+static void yaffs_clear_inode(struct inode *inode)
{
- /* NB This is called as a side effect of other functions, but
- * we had to release the lock to prevent deadlocks, so
- * need to lock again.
- */
+ struct yaffs_obj *obj;
+ struct yaffs_dev *dev;
- yaffs_obj_t *obj;
- yaffs_dev_t *dev = yaffs_SuperToDevice(inode->i_sb);
+ obj = yaffs_inode_to_obj(inode);
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_read_inode for %d\n"), (int)inode->i_ino));
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_clear_inode: ino %d, count %d %s",
+ (int)inode->i_ino, atomic_read(&inode->i_count),
+ obj ? "object exists" : "null object");
- if(current != yaffs_dev_to_lc(dev)->readdirProcess)
+ if (obj) {
+ dev = obj->my_dev;
yaffs_gross_lock(dev);
+ yaffs_unstitch_obj(inode, obj);
+ yaffs_gross_unlock(dev);
+ }
- obj = yaffs_find_by_number(dev, inode->i_ino);
+}
- yaffs_fill_inode_from_obj(inode, obj);
+/* delete is called when the link count is zero and the inode
+ * is put (ie. nobody wants to know about it anymore, time to
+ * delete the file).
+ * NB Must call clear_inode()
+ */
+static void yaffs_delete_inode(struct inode *inode)
+{
+ struct yaffs_obj *obj = yaffs_inode_to_obj(inode);
+ struct yaffs_dev *dev;
+
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_delete_inode: ino %d, count %d %s",
+ (int)inode->i_ino, atomic_read(&inode->i_count),
+ obj ? "object exists" : "null object");
- if(current != yaffs_dev_to_lc(dev)->readdirProcess)
+ if (obj) {
+ dev = obj->my_dev;
+ yaffs_gross_lock(dev);
+ yaffs_del_obj(obj);
yaffs_gross_unlock(dev);
+ }
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13))
+ truncate_inode_pages(&inode->i_data, 0);
+#endif
+ clear_inode(inode);
}
-
#endif
-static YLIST_HEAD(yaffs_context_list);
-struct semaphore yaffs_context_lock;
-static void yaffs_put_super(struct super_block *sb)
-{
- yaffs_dev_t *dev = yaffs_SuperToDevice(sb);
- T(YAFFS_TRACE_OS, (TSTR("yaffs_put_super\n")));
- T(YAFFS_TRACE_OS | YAFFS_TRACE_BACKGROUND,
- (TSTR("Shutting down yaffs background thread\n")));
- yaffs_bg_stop(dev);
- T(YAFFS_TRACE_OS | YAFFS_TRACE_BACKGROUND,
- (TSTR("yaffs background thread shut down\n")));
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf)
+{
+ struct yaffs_dev *dev = yaffs_dentry_to_obj(dentry)->my_dev;
+ struct super_block *sb = dentry->d_sb;
+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
+static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf)
+{
+ struct yaffs_dev *dev = yaffs_super_to_dev(sb);
+#else
+static int yaffs_statfs(struct super_block *sb, struct statfs *buf)
+{
+ struct yaffs_dev *dev = yaffs_super_to_dev(sb);
+#endif
+
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_statfs");
yaffs_gross_lock(dev);
- yaffs_flush_super(sb,1);
+ buf->f_type = YAFFS_MAGIC;
+ buf->f_bsize = sb->s_blocksize;
+ buf->f_namelen = 255;
- if (yaffs_dev_to_lc(dev)->putSuperFunc)
- yaffs_dev_to_lc(dev)->putSuperFunc(sb);
+ if (dev->data_bytes_per_chunk & (dev->data_bytes_per_chunk - 1)) {
+ /* Do this if chunk size is not a power of 2 */
+ uint64_t bytes_in_dev;
+ uint64_t bytes_free;
- yaffs_deinitialise(dev);
+ bytes_in_dev =
+ ((uint64_t)
+ ((dev->param.end_block - dev->param.start_block +
+ 1))) * ((uint64_t) (dev->param.chunks_per_block *
+ dev->data_bytes_per_chunk));
- yaffs_gross_unlock(dev);
+ do_div(bytes_in_dev, sb->s_blocksize); /* bytes_in_dev becomes the number of blocks */
+ buf->f_blocks = bytes_in_dev;
+
+ bytes_free = ((uint64_t) (yaffs_get_n_free_chunks(dev))) *
+ ((uint64_t) (dev->data_bytes_per_chunk));
+
+ do_div(bytes_free, sb->s_blocksize);
+
+ buf->f_bfree = bytes_free;
- down(&yaffs_context_lock);
- ylist_del_init(&(yaffs_dev_to_lc(dev)->contextList));
- up(&yaffs_context_lock);
+ } else if (sb->s_blocksize > dev->data_bytes_per_chunk) {
- if (yaffs_dev_to_lc(dev)->spareBuffer) {
- YFREE(yaffs_dev_to_lc(dev)->spareBuffer);
- yaffs_dev_to_lc(dev)->spareBuffer = NULL;
+ buf->f_blocks =
+ (dev->param.end_block - dev->param.start_block + 1) *
+ dev->param.chunks_per_block /
+ (sb->s_blocksize / dev->data_bytes_per_chunk);
+ buf->f_bfree =
+ yaffs_get_n_free_chunks(dev) /
+ (sb->s_blocksize / dev->data_bytes_per_chunk);
+ } else {
+ buf->f_blocks =
+ (dev->param.end_block - dev->param.start_block + 1) *
+ dev->param.chunks_per_block *
+ (dev->data_bytes_per_chunk / sb->s_blocksize);
+
+ buf->f_bfree =
+ yaffs_get_n_free_chunks(dev) *
+ (dev->data_bytes_per_chunk / sb->s_blocksize);
}
- kfree(dev);
+ buf->f_files = 0;
+ buf->f_ffree = 0;
+ buf->f_bavail = buf->f_bfree;
+
+ yaffs_gross_unlock(dev);
+ return 0;
}
-static void yaffs_MTDPutSuper(struct super_block *sb)
+
+static int yaffs_do_sync_fs(struct super_block *sb, int request_checkpoint)
{
- struct mtd_info *mtd = yaffs_dev_to_mtd(yaffs_SuperToDevice(sb));
- if (mtd->sync)
- mtd->sync(mtd);
+ struct yaffs_dev *dev = yaffs_super_to_dev(sb);
+ unsigned int oneshot_checkpoint = (yaffs_auto_checkpoint & 4);
+ unsigned gc_urgent = yaffs_bg_gc_urgency(dev);
+ int do_checkpoint;
+ int dirty = yaffs_check_super_dirty(dev);
+
+ yaffs_trace(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC | YAFFS_TRACE_BACKGROUND,
+ "yaffs_do_sync_fs: gc-urgency %d %s %s%s",
+ gc_urgent,
+ dirty ? "dirty" : "clean",
+ request_checkpoint ? "checkpoint requested" : "no checkpoint",
+ oneshot_checkpoint ? " one-shot" : "");
+
+ yaffs_gross_lock(dev);
+ do_checkpoint = ((request_checkpoint && !gc_urgent) ||
+ oneshot_checkpoint) && !dev->is_checkpointed;
- put_mtd_device(mtd);
+ if (dirty || do_checkpoint) {
+ yaffs_flush_super(sb, !dev->is_checkpointed && do_checkpoint);
+ yaffs_clear_super_dirty(dev);
+ if (oneshot_checkpoint)
+ yaffs_auto_checkpoint &= ~4;
+ }
+ yaffs_gross_unlock(dev);
+
+ return 0;
}
-static void yaffs_touch_super(yaffs_dev_t *dev)
+#ifdef YAFFS_HAS_WRITE_SUPER
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+static void yaffs_write_super(struct super_block *sb)
+#else
+static int yaffs_write_super(struct super_block *sb)
+#endif
+{
+ unsigned request_checkpoint = (yaffs_auto_checkpoint >= 2);
+
+ yaffs_trace(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC | YAFFS_TRACE_BACKGROUND,
+ "yaffs_write_super %s",
+ request_checkpoint ? " checkpt" : "");
+
+ yaffs_do_sync_fs(sb, request_checkpoint);
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18))
+ return 0;
+#endif
+}
+#endif
+
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+static int yaffs_sync_fs(struct super_block *sb, int wait)
+#else
+static int yaffs_sync_fs(struct super_block *sb)
+#endif
{
- struct super_block *sb = yaffs_dev_to_lc(dev)->superBlock;
+ unsigned request_checkpoint = (yaffs_auto_checkpoint >= 1);
+
+ yaffs_trace(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC,
+ "yaffs_sync_fs%s", request_checkpoint ? " checkpt" : "");
- T(YAFFS_TRACE_OS, (TSTR("yaffs_touch_super() sb = %p\n"), sb));
- if (sb)
- sb->s_dirt = 1;
+ yaffs_do_sync_fs(sb, request_checkpoint);
+
+ return 0;
}
-typedef struct {
+
+
+static const struct super_operations yaffs_super_ops = {
+ .statfs = yaffs_statfs,
+
+#ifndef YAFFS_USE_OWN_IGET
+ .read_inode = yaffs_read_inode,
+#endif
+#ifdef YAFFS_HAS_PUT_INODE
+ .put_inode = yaffs_put_inode,
+#endif
+ .put_super = yaffs_put_super,
+#ifdef YAFFS_HAS_EVICT_INODE
+ .evict_inode = yaffs_evict_inode,
+#else
+ .delete_inode = yaffs_delete_inode,
+ .clear_inode = yaffs_clear_inode,
+#endif
+ .sync_fs = yaffs_sync_fs,
+#ifdef YAFFS_HAS_WRITE_SUPER
+ .write_super = yaffs_write_super,
+#endif
+};
+
+struct yaffs_options {
int inband_tags;
int skip_checkpoint_read;
int skip_checkpoint_write;
@@ -2612,10 +2507,12 @@ typedef struct {
int lazy_loading_overridden;
int empty_lost_and_found;
int empty_lost_and_found_overridden;
-} yaffs_options;
+ int disable_summary;
+};
#define MAX_OPT_LEN 30
-static int yaffs_parse_options(yaffs_options *options, const char *options_str)
+static int yaffs_parse_options(struct yaffs_options *options,
+ const char *options_str)
{
char cur_opt[MAX_OPT_LEN + 1];
int p;
@@ -2627,7 +2524,7 @@ static int yaffs_parse_options(yaffs_options *options, const char *options_str)
memset(cur_opt, 0, MAX_OPT_LEN + 1);
p = 0;
- while(*options_str == ',')
+ while (*options_str == ',')
options_str++;
while (*options_str && *options_str != ',') {
@@ -2638,38 +2535,40 @@ static int yaffs_parse_options(yaffs_options *options, const char *options_str)
options_str++;
}
- if (!strcmp(cur_opt, "inband-tags"))
+ if (!strcmp(cur_opt, "inband-tags")) {
options->inband_tags = 1;
- else if (!strcmp(cur_opt, "tags-ecc-off")){
+ } else if (!strcmp(cur_opt, "tags-ecc-off")) {
options->tags_ecc_on = 0;
- options->tags_ecc_overridden=1;
- } else if (!strcmp(cur_opt, "tags-ecc-on")){
+ options->tags_ecc_overridden = 1;
+ } else if (!strcmp(cur_opt, "tags-ecc-on")) {
options->tags_ecc_on = 1;
options->tags_ecc_overridden = 1;
- } else if (!strcmp(cur_opt, "lazy-loading-off")){
+ } else if (!strcmp(cur_opt, "lazy-loading-off")) {
options->lazy_loading_enabled = 0;
- options->lazy_loading_overridden=1;
- } else if (!strcmp(cur_opt, "lazy-loading-on")){
+ options->lazy_loading_overridden = 1;
+ } else if (!strcmp(cur_opt, "lazy-loading-on")) {
options->lazy_loading_enabled = 1;
options->lazy_loading_overridden = 1;
- } else if (!strcmp(cur_opt, "empty-lost-and-found-off")){
+ } else if (!strcmp(cur_opt, "disable-summary")) {
+ options->disable_summary = 1;
+ } else if (!strcmp(cur_opt, "empty-lost-and-found-off")) {
options->empty_lost_and_found = 0;
- options->empty_lost_and_found_overridden=1;
- } else if (!strcmp(cur_opt, "empty-lost-and-found-on")){
+ options->empty_lost_and_found_overridden = 1;
+ } else if (!strcmp(cur_opt, "empty-lost-and-found-on")) {
options->empty_lost_and_found = 1;
- options->empty_lost_and_found_overridden=1;
- } else if (!strcmp(cur_opt, "no-cache"))
+ options->empty_lost_and_found_overridden = 1;
+ } else if (!strcmp(cur_opt, "no-cache")) {
options->no_cache = 1;
- else if (!strcmp(cur_opt, "no-checkpoint-read"))
+ } else if (!strcmp(cur_opt, "no-checkpoint-read")) {
options->skip_checkpoint_read = 1;
- else if (!strcmp(cur_opt, "no-checkpoint-write"))
+ } else if (!strcmp(cur_opt, "no-checkpoint-write")) {
options->skip_checkpoint_write = 1;
- else if (!strcmp(cur_opt, "no-checkpoint")) {
+ } else if (!strcmp(cur_opt, "no-checkpoint")) {
options->skip_checkpoint_read = 1;
options->skip_checkpoint_write = 1;
} else {
printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n",
- cur_opt);
+ cur_opt);
error = 1;
}
}
@@ -2677,52 +2576,72 @@ static int yaffs_parse_options(yaffs_options *options, const char *options_str)
return error;
}
+
+static struct dentry *yaffs_make_root(struct inode *inode)
+{
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 4, 0))
+ struct dentry *root = d_alloc_root(inode);
+
+ if (!root)
+ iput(inode);
+
+ return root;
+#else
+ return d_make_root(inode);
+#endif
+}
+
+
+
+
static struct super_block *yaffs_internal_read_super(int yaffs_version,
- struct super_block *sb,
- void *data, int silent)
+ struct super_block *sb,
+ void *data, int silent)
{
- int nBlocks;
+ int n_blocks;
struct inode *inode = NULL;
struct dentry *root;
- yaffs_dev_t *dev = 0;
+ struct yaffs_dev *dev = 0;
char devname_buf[BDEVNAME_SIZE + 1];
struct mtd_info *mtd;
int err;
char *data_str = (char *)data;
- struct yaffs_LinuxContext *context = NULL;
- yaffs_param_t *param;
+ struct yaffs_linux_context *context = NULL;
+ struct yaffs_param *param;
int read_only = 0;
+ int inband_tags = 0;
- yaffs_options options;
+ struct yaffs_options options;
unsigned mount_id;
int found;
- struct yaffs_LinuxContext *context_iterator;
- struct ylist_head *l;
+ struct yaffs_linux_context *context_iterator;
+ struct list_head *l;
+
+ if (!sb) {
+ printk(KERN_INFO "yaffs: sb is NULL\n");
+ return NULL;
+ }
sb->s_magic = YAFFS_MAGIC;
sb->s_op = &yaffs_super_ops;
sb->s_flags |= MS_NOATIME;
- read_only =((sb->s_flags & MS_RDONLY) != 0);
-
+ read_only = ((sb->s_flags & MS_RDONLY) != 0);
#ifdef YAFFS_COMPILE_EXPORTFS
sb->s_export_op = &yaffs_export_ops;
#endif
- if (!sb)
- printk(KERN_INFO "yaffs: sb is NULL\n");
- else if (!sb->s_dev)
+ if (!sb->s_dev)
printk(KERN_INFO "yaffs: sb->s_dev is NULL\n");
else if (!yaffs_devname(sb, devname_buf))
printk(KERN_INFO "yaffs: devname is NULL\n");
else
printk(KERN_INFO "yaffs: dev is %d name is \"%s\" %s\n",
sb->s_dev,
- yaffs_devname(sb, devname_buf),
- read_only ? "ro" : "rw");
+ yaffs_devname(sb, devname_buf), read_only ? "ro" : "rw");
if (!data_str)
data_str = "";
@@ -2736,145 +2655,67 @@ static struct super_block *yaffs_internal_read_super(int yaffs_version,
return NULL;
}
-
sb->s_blocksize = PAGE_CACHE_SIZE;
sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_read_super: Using yaffs%d\n"), yaffs_version));
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_read_super: block size %d\n"),
- (int)(sb->s_blocksize)));
-
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs: Attempting MTD mount of %u.%u,\"%s\"\n"),
- MAJOR(sb->s_dev), MINOR(sb->s_dev),
- yaffs_devname(sb, devname_buf)));
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_read_super: Using yaffs%d", yaffs_version);
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_read_super: block size %d", (int)(sb->s_blocksize));
- /* Check it's an mtd device..... */
- if (MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR)
- return NULL; /* This isn't an mtd device */
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "yaffs: Attempting MTD mount of %u.%u,\"%s\"",
+ MAJOR(sb->s_dev), MINOR(sb->s_dev),
+ yaffs_devname(sb, devname_buf));
/* Get the device */
mtd = get_mtd_device(NULL, MINOR(sb->s_dev));
if (!mtd) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs: MTD device #%u doesn't appear to exist\n"),
- MINOR(sb->s_dev)));
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "yaffs: MTD device %u either not valid or unavailable",
+ MINOR(sb->s_dev));
return NULL;
}
- /* Check it's NAND */
- if (mtd->type != MTD_NANDFLASH) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs: MTD device is not NAND it's type %d\n"),
- mtd->type));
- return NULL;
- }
-
- T(YAFFS_TRACE_OS, (TSTR(" erase %p\n"), mtd->erase));
- T(YAFFS_TRACE_OS, (TSTR(" read %p\n"), mtd->read));
- T(YAFFS_TRACE_OS, (TSTR(" write %p\n"), mtd->write));
- T(YAFFS_TRACE_OS, (TSTR(" readoob %p\n"), mtd->read_oob));
- T(YAFFS_TRACE_OS, (TSTR(" writeoob %p\n"), mtd->write_oob));
- T(YAFFS_TRACE_OS, (TSTR(" block_isbad %p\n"), mtd->block_isbad));
- T(YAFFS_TRACE_OS, (TSTR(" block_markbad %p\n"), mtd->block_markbad));
- T(YAFFS_TRACE_OS, (TSTR(" %s %d\n"), WRITE_SIZE_STR, WRITE_SIZE(mtd)));
- T(YAFFS_TRACE_OS, (TSTR(" oobsize %d\n"), mtd->oobsize));
- T(YAFFS_TRACE_OS, (TSTR(" erasesize %d\n"), mtd->erasesize));
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29)
- T(YAFFS_TRACE_OS, (TSTR(" size %u\n"), mtd->size));
-#else
- T(YAFFS_TRACE_OS, (TSTR(" size %lld\n"), mtd->size));
-#endif
-#ifdef CONFIG_YAFFS_AUTO_YAFFS2
-
- if (yaffs_version == 1 && WRITE_SIZE(mtd) >= 2048) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs: auto selecting yaffs2\n")));
+ if (yaffs_auto_select && yaffs_version == 1 && WRITE_SIZE(mtd) >= 2048) {
+ yaffs_trace(YAFFS_TRACE_ALWAYS, "auto selecting yaffs2");
yaffs_version = 2;
}
/* Added NCB 26/5/2006 for completeness */
- if (yaffs_version == 2 && !options.inband_tags && WRITE_SIZE(mtd) == 512) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs: auto selecting yaffs1\n")));
+ if (yaffs_version == 2 && !options.inband_tags
+ && WRITE_SIZE(mtd) == 512) {
+ yaffs_trace(YAFFS_TRACE_ALWAYS, "auto selecting yaffs1");
yaffs_version = 1;
}
-#endif
-
- if (yaffs_version == 2) {
- /* Check for version 2 style functions */
- if (!mtd->erase ||
- !mtd->block_isbad ||
- !mtd->block_markbad ||
- !mtd->read ||
- !mtd->write ||
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
- !mtd->read_oob || !mtd->write_oob) {
-#else
- !mtd->write_ecc ||
- !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) {
-#endif
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs: MTD device does not support required "
- "functions\n")));
- return NULL;
- }
+ if (mtd->oobavail < sizeof(struct yaffs_packed_tags2) ||
+ options.inband_tags)
+ inband_tags = 1;
- if ((WRITE_SIZE(mtd) < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
- mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) &&
- !options.inband_tags) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs: MTD device does not have the "
- "right page sizes\n")));
- return NULL;
- }
- } else {
- /* Check for V1 style functions */
- if (!mtd->erase ||
- !mtd->read ||
- !mtd->write ||
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
- !mtd->read_oob || !mtd->write_oob) {
-#else
- !mtd->write_ecc ||
- !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) {
-#endif
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs: MTD device does not support required "
- "functions\n")));
- return NULL;
- }
-
- if (WRITE_SIZE(mtd) < YAFFS_BYTES_PER_CHUNK ||
- mtd->oobsize != YAFFS_BYTES_PER_SPARE) {
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs: MTD device does not support have the "
- "right page sizes\n")));
- return NULL;
- }
- }
+ if(yaffs_verify_mtd(mtd, yaffs_version, inband_tags) < 0)
+ return NULL;
/* OK, so if we got here, we have an MTD that's NAND and looks
* like it has the right capabilities
- * Set the yaffs_dev_t up for mtd
+ * Set the struct yaffs_dev up for mtd
*/
- if (!read_only && !(mtd->flags & MTD_WRITEABLE)){
+ if (!read_only && !(mtd->flags & MTD_WRITEABLE)) {
read_only = 1;
- printk(KERN_INFO "yaffs: mtd is read only, setting superblock read only");
+ printk(KERN_INFO
+ "yaffs: mtd is read only, setting superblock read only\n"
+ );
sb->s_flags |= MS_RDONLY;
}
- dev = kmalloc(sizeof(yaffs_dev_t), GFP_KERNEL);
- context = kmalloc(sizeof(struct yaffs_LinuxContext),GFP_KERNEL);
-
- if(!dev || !context ){
- if(dev)
+ dev = kmalloc(sizeof(struct yaffs_dev), GFP_KERNEL);
+ context = kmalloc(sizeof(struct yaffs_linux_context), GFP_KERNEL);
+
+ if (!dev || !context) {
+ if (dev)
kfree(dev);
- if(context)
+ if (context)
kfree(context);
dev = NULL;
context = NULL;
@@ -2882,19 +2723,19 @@ static struct super_block *yaffs_internal_read_super(int yaffs_version,
if (!dev) {
/* Deep shit could not allocate device structure */
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs_read_super: Failed trying to allocate "
- "yaffs_dev_t. \n")));
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "yaffs_read_super: Failed trying to allocate struct yaffs_dev."
+ );
return NULL;
}
- memset(dev, 0, sizeof(yaffs_dev_t));
+ memset(dev, 0, sizeof(struct yaffs_dev));
param = &(dev->param);
- memset(context,0,sizeof(struct yaffs_LinuxContext));
+ memset(context, 0, sizeof(struct yaffs_linux_context));
dev->os_context = context;
- YINIT_LIST_HEAD(&(context->contextList));
+ INIT_LIST_HEAD(&(context->context_list));
context->dev = dev;
- context->superBlock = sb;
+ context->super = sb;
dev->read_only = read_only;
@@ -2903,69 +2744,40 @@ static struct super_block *yaffs_internal_read_super(int yaffs_version,
#else
sb->u.generic_sbp = dev;
#endif
-
+
+
dev->driver_context = mtd;
param->name = mtd->name;
/* Set up the memory size parameters.... */
- nBlocks = YCALCBLOCKS(mtd->size, (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK));
- param->start_block = 0;
- param->end_block = nBlocks - 1;
- param->chunks_per_block = YAFFS_CHUNKS_PER_BLOCK;
- param->total_bytes_per_chunk = YAFFS_BYTES_PER_CHUNK;
param->n_reserved_blocks = 5;
param->n_caches = (options.no_cache) ? 0 : 10;
- param->inband_tags = options.inband_tags;
+ param->inband_tags = inband_tags;
-#ifdef CONFIG_YAFFS_DISABLE_LAZY_LOAD
- param->disable_lazy_load = 1;
-#endif
-#ifdef CONFIG_YAFFS_XATTR
param->enable_xattr = 1;
-#endif
- if(options.lazy_loading_overridden)
+ if (options.lazy_loading_overridden)
param->disable_lazy_load = !options.lazy_loading_enabled;
-#ifdef CONFIG_YAFFS_DISABLE_TAGS_ECC
- param->no_tags_ecc = 1;
-#endif
-
-#ifdef CONFIG_YAFFS_DISABLE_BACKGROUND
-#else
param->defered_dir_update = 1;
-#endif
- if(options.tags_ecc_overridden)
+ if (options.tags_ecc_overridden)
param->no_tags_ecc = !options.tags_ecc_on;
-#ifdef CONFIG_YAFFS_EMPTY_LOST_AND_FOUND
param->empty_lost_n_found = 1;
-#endif
-
-#ifdef CONFIG_YAFFS_DISABLE_BLOCK_REFRESHING
- param->refresh_period = 0;
-#else
param->refresh_period = 500;
-#endif
+ param->disable_summary = options.disable_summary;
-#ifdef CONFIG_YAFFS__ALWAYS_CHECK_CHUNK_ERASED
- param->always_check_erased = 1;
-#endif
- if(options.empty_lost_and_found_overridden)
+#ifdef CONFIG_YAFFS_DISABLE_BAD_BLOCK_MARKING
+ param->disable_bad_block_marking = 1;
+#endif
+ if (options.empty_lost_and_found_overridden)
param->empty_lost_n_found = options.empty_lost_and_found;
/* ... and the functions. */
if (yaffs_version == 2) {
- param->write_chunk_tags_fn =
- nandmtd2_WriteChunkWithTagsToNAND;
- param->read_chunk_tags_fn =
- nandmtd2_ReadChunkWithTagsFromNAND;
- param->bad_block_fn = nandmtd2_MarkNANDBlockBad;
- param->query_block_fn = nandmtd2_QueryNANDBlock;
- yaffs_dev_to_lc(dev)->spareBuffer = YMALLOC(mtd->oobsize);
param->is_yaffs2 = 1;
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
param->total_bytes_per_chunk = mtd->writesize;
@@ -2974,92 +2786,81 @@ static struct super_block *yaffs_internal_read_super(int yaffs_version,
param->total_bytes_per_chunk = mtd->oobblock;
param->chunks_per_block = mtd->erasesize / mtd->oobblock;
#endif
- nBlocks = YCALCBLOCKS(mtd->size, mtd->erasesize);
+ n_blocks = YCALCBLOCKS(mtd->size, mtd->erasesize);
param->start_block = 0;
- param->end_block = nBlocks - 1;
+ param->end_block = n_blocks - 1;
} else {
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
- /* use the MTD interface in yaffs_mtdif1.c */
- param->write_chunk_tags_fn =
- nandmtd1_WriteChunkWithTagsToNAND;
- param->read_chunk_tags_fn =
- nandmtd1_ReadChunkWithTagsFromNAND;
- param->bad_block_fn = nandmtd1_MarkNANDBlockBad;
- param->query_block_fn = nandmtd1_QueryNANDBlock;
-#else
- param->write_chunk_fn = nandmtd_WriteChunkToNAND;
- param->read_chunk_fn = nandmtd_ReadChunkFromNAND;
-#endif
param->is_yaffs2 = 0;
+ n_blocks = YCALCBLOCKS(mtd->size,
+ YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK);
+
+ param->chunks_per_block = YAFFS_CHUNKS_PER_BLOCK;
+ param->total_bytes_per_chunk = YAFFS_BYTES_PER_CHUNK;
}
- /* ... and common functions */
- param->erase_fn = nandmtd_EraseBlockInNAND;
- param->initialise_flash_fn = nandmtd_InitialiseNAND;
- yaffs_dev_to_lc(dev)->putSuperFunc = yaffs_MTDPutSuper;
+ param->start_block = 0;
+ param->end_block = n_blocks - 1;
- param->sb_dirty_fn = yaffs_touch_super;
- param->gc_control = yaffs_gc_control_callback;
+ yaffs_mtd_drv_install(dev);
- yaffs_dev_to_lc(dev)->superBlock= sb;
-
+ param->sb_dirty_fn = yaffs_set_super_dirty;
+ param->gc_control_fn = yaffs_gc_control_callback;
-#ifndef CONFIG_YAFFS_DOES_ECC
- param->use_nand_ecc = 1;
-#endif
+ yaffs_dev_to_lc(dev)->super = sb;
-#ifdef CONFIG_YAFFS_DISABLE_WIDE_TNODES
- param->wide_tnodes_disabled = 1;
-#endif
+ param->use_nand_ecc = 1;
param->skip_checkpt_rd = options.skip_checkpoint_read;
param->skip_checkpt_wr = options.skip_checkpoint_write;
- down(&yaffs_context_lock);
+ mutex_lock(&yaffs_context_lock);
/* Get a mount id */
found = 0;
- for(mount_id=0; ! found; mount_id++){
+ for (mount_id = 0; !found; mount_id++) {
found = 1;
- ylist_for_each(l,&yaffs_context_list){
- context_iterator = ylist_entry(l,struct yaffs_LinuxContext,contextList);
- if(context_iterator->mount_id == mount_id)
+ list_for_each(l, &yaffs_context_list) {
+ context_iterator =
+ list_entry(l, struct yaffs_linux_context,
+ context_list);
+ if (context_iterator->mount_id == mount_id)
found = 0;
}
}
context->mount_id = mount_id;
- ylist_add_tail(&(yaffs_dev_to_lc(dev)->contextList), &yaffs_context_list);
- up(&yaffs_context_lock);
+ list_add_tail(&(yaffs_dev_to_lc(dev)->context_list),
+ &yaffs_context_list);
+ mutex_unlock(&yaffs_context_lock);
- /* Directory search handling...*/
- YINIT_LIST_HEAD(&(yaffs_dev_to_lc(dev)->searchContexts));
- param->remove_obj_fn = yaffs_remove_obj_callback;
+ /* Directory search handling... */
+ INIT_LIST_HEAD(&(yaffs_dev_to_lc(dev)->search_contexts));
+ param->remove_obj_fn = yaffs_remove_obj_callback;
- init_MUTEX(&(yaffs_dev_to_lc(dev)->grossLock));
+ mutex_init(&(yaffs_dev_to_lc(dev)->gross_lock));
yaffs_gross_lock(dev);
err = yaffs_guts_initialise(dev);
- T(YAFFS_TRACE_OS,
- (TSTR("yaffs_read_super: guts initialised %s\n"),
- (err == YAFFS_OK) ? "OK" : "FAILED"));
-
- if(err == YAFFS_OK)
+ yaffs_trace(YAFFS_TRACE_OS,
+ "yaffs_read_super: guts initialised %s",
+ (err == YAFFS_OK) ? "OK" : "FAILED");
+
+ if (err == YAFFS_OK)
yaffs_bg_start(dev);
-
- if(!context->bgThread)
+
+ if (!context->bg_thread)
param->defered_dir_update = 0;
+ sb->s_maxbytes = yaffs_max_file_size(dev);
/* Release lock before yaffs_get_inode() */
yaffs_gross_unlock(dev);
/* Create root inode */
if (err == YAFFS_OK)
- inode = yaffs_get_inode(sb, S_IFDIR | 0755, 0,
- yaffs_root(dev));
+ inode = yaffs_get_inode(sb, S_IFDIR | 0755, 0, yaffs_root(dev));
if (!inode)
return NULL;
@@ -3067,27 +2868,25 @@ static struct super_block *yaffs_internal_read_super(int yaffs_version,
inode->i_op = &yaffs_dir_inode_operations;
inode->i_fop = &yaffs_dir_operations;
- T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: got root inode\n")));
-
- root = d_alloc_root(inode);
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_read_super: got root inode");
- T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: d_alloc_root done\n")));
+ root = yaffs_make_root(inode);
- if (!root) {
- iput(inode);
+ if (!root)
return NULL;
- }
+
sb->s_root = root;
- sb->s_dirt = !dev->is_checkpointed;
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs_read_super: is_checkpointed %d\n"),
- dev->is_checkpointed));
+ if(!dev->is_checkpointed)
+ yaffs_set_super_dirty(dev);
+
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "yaffs_read_super: is_checkpointed %d",
+ dev->is_checkpointed);
- T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: done\n")));
+ yaffs_trace(YAFFS_TRACE_OS, "yaffs_read_super: done");
return sb;
}
-
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
static int yaffs_internal_read_super_mtd(struct super_block *sb, void *data,
int silent)
@@ -3095,7 +2894,13 @@ static int yaffs_internal_read_super_mtd(struct super_block *sb, void *data,
return yaffs_internal_read_super(1, sb, data, silent) ? 0 : -EINVAL;
}
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39))
+static struct dentry *yaffs_mount(struct file_system_type *fs_type, int flags,
+ const char *dev_name, void *data)
+{
+ return mount_bdev(fs_type, flags, dev_name, data, yaffs_internal_read_super_mtd);
+}
+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
static int yaffs_read_super(struct file_system_type *fs,
int flags, const char *dev_name,
void *data, struct vfsmount *mnt)
@@ -3118,8 +2923,12 @@ static struct super_block *yaffs_read_super(struct file_system_type *fs,
static struct file_system_type yaffs_fs_type = {
.owner = THIS_MODULE,
.name = "yaffs",
- .get_sb = yaffs_read_super,
- .kill_sb = kill_block_super,
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39))
+ .mount = yaffs_mount,
+#else
+ .get_sb = yaffs_read_super,
+#endif
+ .kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
#else
@@ -3134,8 +2943,6 @@ static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super,
#endif
-#ifdef CONFIG_YAFFS_YAFFS2
-
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0))
static int yaffs2_internal_read_super_mtd(struct super_block *sb, void *data,
int silent)
@@ -3143,13 +2950,19 @@ static int yaffs2_internal_read_super_mtd(struct super_block *sb, void *data,
return yaffs_internal_read_super(2, sb, data, silent) ? 0 : -EINVAL;
}
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39))
+static struct dentry *yaffs2_mount(struct file_system_type *fs_type, int flags,
+ const char *dev_name, void *data)
+{
+ return mount_bdev(fs_type, flags, dev_name, data, yaffs2_internal_read_super_mtd);
+}
+#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17))
static int yaffs2_read_super(struct file_system_type *fs,
- int flags, const char *dev_name, void *data,
- struct vfsmount *mnt)
+ int flags, const char *dev_name, void *data,
+ struct vfsmount *mnt)
{
return get_sb_bdev(fs, flags, dev_name, data,
- yaffs2_internal_read_super_mtd, mnt);
+ yaffs2_internal_read_super_mtd, mnt);
}
#else
static struct super_block *yaffs2_read_super(struct file_system_type *fs,
@@ -3165,8 +2978,12 @@ static struct super_block *yaffs2_read_super(struct file_system_type *fs,
static struct file_system_type yaffs2_fs_type = {
.owner = THIS_MODULE,
.name = "yaffs2",
- .get_sb = yaffs2_read_super,
- .kill_sb = kill_block_super,
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 39))
+ .mount = yaffs2_mount,
+#else
+ .get_sb = yaffs2_read_super,
+#endif
+ .kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
#else
@@ -3180,40 +2997,58 @@ static DECLARE_FSTYPE(yaffs2_fs_type, "yaffs2", yaffs2_read_super,
FS_REQUIRES_DEV);
#endif
-#endif /* CONFIG_YAFFS_YAFFS2 */
static struct proc_dir_entry *my_proc_entry;
-static struct proc_dir_entry *debug_proc_entry;
-
-static char *yaffs_dump_dev_part0(char *buf, yaffs_dev_t * dev)
-{
- buf += sprintf(buf, "start_block.......... %d\n", dev->param.start_block);
- buf += sprintf(buf, "end_block............ %d\n", dev->param.end_block);
- buf += sprintf(buf, "total_bytes_per_chunk %d\n", dev->param.total_bytes_per_chunk);
- buf += sprintf(buf, "use_nand_ecc......... %d\n", dev->param.use_nand_ecc);
- buf += sprintf(buf, "no_tags_ecc.......... %d\n", dev->param.no_tags_ecc);
- buf += sprintf(buf, "is_yaffs2............ %d\n", dev->param.is_yaffs2);
- buf += sprintf(buf, "inband_tags.......... %d\n", dev->param.inband_tags);
- buf += sprintf(buf, "empty_lost_n_found... %d\n", dev->param.empty_lost_n_found);
- buf += sprintf(buf, "disable_lazy_load.... %d\n", dev->param.disable_lazy_load);
- buf += sprintf(buf, "refresh_period....... %d\n", dev->param.refresh_period);
- buf += sprintf(buf, "n_caches............. %d\n", dev->param.n_caches);
- buf += sprintf(buf, "n_reserved_blocks.... %d\n", dev->param.n_reserved_blocks);
- buf += sprintf(buf, "always_check_erased.. %d\n", dev->param.always_check_erased);
+static char *yaffs_dump_dev_part0(char *buf, struct yaffs_dev *dev)
+{
+ struct yaffs_param *param = &dev->param;
+ int bs[10];
+
+ yaffs_count_blocks_by_state(dev,bs);
+
+ buf += sprintf(buf, "start_block.......... %d\n", param->start_block);
+ buf += sprintf(buf, "end_block............ %d\n", param->end_block);
+ buf += sprintf(buf, "total_bytes_per_chunk %d\n",
+ param->total_bytes_per_chunk);
+ buf += sprintf(buf, "use_nand_ecc......... %d\n", param->use_nand_ecc);
+ buf += sprintf(buf, "no_tags_ecc.......... %d\n", param->no_tags_ecc);
+ buf += sprintf(buf, "is_yaffs2............ %d\n", param->is_yaffs2);
+ buf += sprintf(buf, "inband_tags.......... %d\n", param->inband_tags);
+ buf += sprintf(buf, "empty_lost_n_found... %d\n",
+ param->empty_lost_n_found);
+ buf += sprintf(buf, "disable_lazy_load.... %d\n",
+ param->disable_lazy_load);
+ buf += sprintf(buf, "disable_bad_block_mrk %d\n",
+ param->disable_bad_block_marking);
+ buf += sprintf(buf, "refresh_period....... %d\n",
+ param->refresh_period);
+ buf += sprintf(buf, "n_caches............. %d\n", param->n_caches);
+ buf += sprintf(buf, "n_reserved_blocks.... %d\n",
+ param->n_reserved_blocks);
+ buf += sprintf(buf, "always_check_erased.. %d\n",
+ param->always_check_erased);
buf += sprintf(buf, "\n");
+ buf += sprintf(buf, "block count by state\n");
+ buf += sprintf(buf, "0:%d 1:%d 2:%d 3:%d 4:%d\n",
+ bs[0], bs[1], bs[2], bs[3], bs[4]);
+ buf += sprintf(buf, "5:%d 6:%d 7:%d 8:%d 9:%d\n",
+ bs[5], bs[6], bs[7], bs[8], bs[9]);
return buf;
}
-
-static char *yaffs_dump_dev_part1(char *buf, yaffs_dev_t * dev)
+static char *yaffs_dump_dev_part1(char *buf, struct yaffs_dev *dev)
{
- buf += sprintf(buf, "data_bytes_per_chunk. %d\n", dev->data_bytes_per_chunk);
+ buf += sprintf(buf, "max file size....... %lld\n",
+ (long long) yaffs_max_file_size(dev));
+ buf += sprintf(buf, "data_bytes_per_chunk. %d\n",
+ dev->data_bytes_per_chunk);
buf += sprintf(buf, "chunk_grp_bits....... %d\n", dev->chunk_grp_bits);
buf += sprintf(buf, "chunk_grp_size....... %d\n", dev->chunk_grp_size);
buf += sprintf(buf, "n_erased_blocks...... %d\n", dev->n_erased_blocks);
- buf += sprintf(buf, "blocks_in_checkpt.... %d\n", dev->blocks_in_checkpt);
+ buf += sprintf(buf, "blocks_in_checkpt.... %d\n",
+ dev->blocks_in_checkpt);
buf += sprintf(buf, "\n");
buf += sprintf(buf, "n_tnodes............. %d\n", dev->n_tnodes);
buf += sprintf(buf, "n_obj................ %d\n", dev->n_obj);
@@ -3224,21 +3059,30 @@ static char *yaffs_dump_dev_part1(char *buf, yaffs_dev_t * dev)
buf += sprintf(buf, "n_erasures........... %u\n", dev->n_erasures);
buf += sprintf(buf, "n_gc_copies.......... %u\n", dev->n_gc_copies);
buf += sprintf(buf, "all_gcs.............. %u\n", dev->all_gcs);
- buf += sprintf(buf, "passive_gc_count..... %u\n", dev->passive_gc_count);
- buf += sprintf(buf, "oldest_dirty_gc_count %u\n", dev->oldest_dirty_gc_count);
+ buf += sprintf(buf, "passive_gc_count..... %u\n",
+ dev->passive_gc_count);
+ buf += sprintf(buf, "oldest_dirty_gc_count %u\n",
+ dev->oldest_dirty_gc_count);
buf += sprintf(buf, "n_gc_blocks.......... %u\n", dev->n_gc_blocks);
buf += sprintf(buf, "bg_gcs............... %u\n", dev->bg_gcs);
- buf += sprintf(buf, "n_retired_writes..... %u\n", dev->n_retired_writes);
- buf += sprintf(buf, "nRetireBlocks........ %u\n", dev->n_retired_blocks);
+ buf += sprintf(buf, "n_retried_writes..... %u\n",
+ dev->n_retried_writes);
+ buf += sprintf(buf, "n_retired_blocks..... %u\n",
+ dev->n_retired_blocks);
buf += sprintf(buf, "n_ecc_fixed.......... %u\n", dev->n_ecc_fixed);
buf += sprintf(buf, "n_ecc_unfixed........ %u\n", dev->n_ecc_unfixed);
- buf += sprintf(buf, "n_tags_ecc_fixed..... %u\n", dev->n_tags_ecc_fixed);
- buf += sprintf(buf, "n_tags_ecc_unfixed... %u\n", dev->n_tags_ecc_unfixed);
+ buf += sprintf(buf, "n_tags_ecc_fixed..... %u\n",
+ dev->n_tags_ecc_fixed);
+ buf += sprintf(buf, "n_tags_ecc_unfixed... %u\n",
+ dev->n_tags_ecc_unfixed);
buf += sprintf(buf, "cache_hits........... %u\n", dev->cache_hits);
buf += sprintf(buf, "n_deleted_files...... %u\n", dev->n_deleted_files);
- buf += sprintf(buf, "n_unlinked_files..... %u\n", dev->n_unlinked_files);
+ buf += sprintf(buf, "n_unlinked_files..... %u\n",
+ dev->n_unlinked_files);
buf += sprintf(buf, "refresh_count........ %u\n", dev->refresh_count);
buf += sprintf(buf, "n_bg_deletions....... %u\n", dev->n_bg_deletions);
+ buf += sprintf(buf, "tags_used............ %u\n", dev->tags_used);
+ buf += sprintf(buf, "summary_used......... %u\n", dev->summary_used);
return buf;
}
@@ -3247,7 +3091,7 @@ static int yaffs_proc_read(char *page,
char **start,
off_t offset, int count, int *eof, void *data)
{
- struct ylist_head *item;
+ struct list_head *item;
char *buf = page;
int step = offset;
int n = 0;
@@ -3262,67 +3106,45 @@ static int yaffs_proc_read(char *page,
/* Print header first */
if (step == 0)
- buf += sprintf(buf, "Multi-version YAFFS built:" __DATE__ " " __TIME__"\n");
+ buf +=
+ sprintf(buf,
+ "Multi-version YAFFS built:" __DATE__ " " __TIME__
+ "\n");
else if (step == 1)
- buf += sprintf(buf,"\n");
+ buf += sprintf(buf, "\n");
else {
- step-=2;
-
- down(&yaffs_context_lock);
+ step -= 2;
+
+ mutex_lock(&yaffs_context_lock);
/* Locate and print the Nth entry. Order N-squared but N is small. */
- ylist_for_each(item, &yaffs_context_list) {
- struct yaffs_LinuxContext *dc = ylist_entry(item, struct yaffs_LinuxContext, contextList);
- yaffs_dev_t *dev = dc->dev;
+ list_for_each(item, &yaffs_context_list) {
+ struct yaffs_linux_context *dc =
+ list_entry(item, struct yaffs_linux_context,
+ context_list);
+ struct yaffs_dev *dev = dc->dev;
if (n < (step & ~1)) {
- n+=2;
+ n += 2;
continue;
}
- if((step & 1)==0){
- buf += sprintf(buf, "\nDevice %d \"%s\"\n", n, dev->param.name);
+ if ((step & 1) == 0) {
+ buf +=
+ sprintf(buf, "\nDevice %d \"%s\"\n", n,
+ dev->param.name);
buf = yaffs_dump_dev_part0(buf, dev);
- } else
+ } else {
buf = yaffs_dump_dev_part1(buf, dev);
-
+ }
+
break;
}
- up(&yaffs_context_lock);
+ mutex_unlock(&yaffs_context_lock);
}
return buf - page < count ? buf - page : count;
}
-static int yaffs_stats_proc_read(char *page,
- char **start,
- off_t offset, int count, int *eof, void *data)
-{
- struct ylist_head *item;
- char *buf = page;
- int n = 0;
-
- down(&yaffs_context_lock);
-
- /* Locate and print the Nth entry. Order N-squared but N is small. */
- ylist_for_each(item, &yaffs_context_list) {
- struct yaffs_LinuxContext *dc = ylist_entry(item, struct yaffs_LinuxContext, contextList);
- yaffs_dev_t *dev = dc->dev;
-
- int erasedChunks;
-
- erasedChunks = dev->n_erased_blocks * dev->param.chunks_per_block;
-
- buf += sprintf(buf,"%d, %d, %d, %u, %u, %u, %u\n",
- n, dev->n_free_chunks, erasedChunks,
- dev->bg_gcs, dev->oldest_dirty_gc_count,
- dev->n_obj, dev->n_tnodes);
- }
- up(&yaffs_context_lock);
-
-
- return buf - page < count ? buf - page : count;
-}
-
/**
* Set the verbosity of the warnings and error messages.
*
@@ -3351,15 +3173,14 @@ static struct {
{"os", YAFFS_TRACE_OS},
{"scan_debug", YAFFS_TRACE_SCAN_DEBUG},
{"scan", YAFFS_TRACE_SCAN},
+ {"mount", YAFFS_TRACE_MOUNT},
{"tracing", YAFFS_TRACE_TRACING},
{"sync", YAFFS_TRACE_SYNC},
{"write", YAFFS_TRACE_WRITE},
-
{"verify", YAFFS_TRACE_VERIFY},
{"verify_nand", YAFFS_TRACE_VERIFY_NAND},
{"verify_full", YAFFS_TRACE_VERIFY_FULL},
{"verify_all", YAFFS_TRACE_VERIFY_ALL},
-
{"all", 0xffffffff},
{"none", 0},
{NULL, 0},
@@ -3367,7 +3188,7 @@ static struct {
#define MAX_MASK_NAME_LENGTH 40
static int yaffs_proc_write_trace_options(struct file *file, const char *buf,
- unsigned long count, void *data)
+ unsigned long count, void *data)
{
unsigned rg = 0, mask_bitfield;
char *end;
@@ -3409,15 +3230,17 @@ static int yaffs_proc_write_trace_options(struct file *file, const char *buf,
done = 0;
} else {
for (x = buf + pos, i = 0;
- (*x == '_' || (*x >= 'a' && *x <= 'z')) &&
- i < MAX_MASK_NAME_LENGTH; x++, i++, pos++)
+ (*x == '_' || (*x >= 'a' && *x <= 'z')) &&
+ i < MAX_MASK_NAME_LENGTH; x++, i++, pos++)
substring[i] = *x;
substring[i] = '\0';
for (i = 0; mask_flags[i].mask_name != NULL; i++) {
- if (strcmp(substring, mask_flags[i].mask_name) == 0) {
+ if (strcmp(substring, mask_flags[i].mask_name)
+ == 0) {
mask_name = mask_flags[i].mask_name;
- mask_bitfield = mask_flags[i].mask_bitfield;
+ mask_bitfield =
+ mask_flags[i].mask_bitfield;
done = 0;
break;
}
@@ -3452,18 +3275,101 @@ static int yaffs_proc_write_trace_options(struct file *file, const char *buf,
char flag;
flag = ((rg & mask_flags[i].mask_bitfield) ==
mask_flags[i].mask_bitfield) ? '+' : '-';
- printk(KERN_DEBUG "%c%s\n", flag, mask_flags[i].mask_name);
+ printk(KERN_DEBUG "%c%s\n", flag,
+ mask_flags[i].mask_name);
}
}
return count;
}
+/* Debug strings are of the form:
+ * .bnnn print info on block n
+ * .cobjn,chunkn print nand chunk id for objn:chunkn
+ */
+
+static int yaffs_proc_debug_write(struct file *file, const char *buf,
+ unsigned long count, void *data)
+{
+
+ char str[100];
+ char *p0;
+ char *p1;
+ long p1_val;
+ long p0_val;
+ char cmd;
+ struct list_head *item;
+
+ memset(str, 0, sizeof(str));
+ memcpy(str, buf, min(count, sizeof(str) -1));
+
+ cmd = str[1];
+
+ p0 = str + 2;
+
+ p1 = p0;
+
+ while (*p1 && *p1 != ',') {
+ p1++;
+ }
+ *p1 = '\0';
+ p1++;
+
+ p0_val = simple_strtol(p0, NULL, 0);
+ p1_val = simple_strtol(p1, NULL, 0);
+
+
+ mutex_lock(&yaffs_context_lock);
+
+ /* Locate and print the Nth entry. Order N-squared but N is small. */
+ list_for_each(item, &yaffs_context_list) {
+ struct yaffs_linux_context *dc =
+ list_entry(item, struct yaffs_linux_context,
+ context_list);
+ struct yaffs_dev *dev = dc->dev;
+
+ if (cmd == 'b') {
+ struct yaffs_block_info *bi;
+
+ bi = yaffs_get_block_info(dev,p0_val);
+
+ if(bi) {
+ printk("Block %d: state %d, retire %d, use %d, seq %d\n",
+ (int)p0_val, bi->block_state,
+ bi->needs_retiring, bi->pages_in_use,
+ bi->seq_number);
+ }
+ } else if (cmd == 'c') {
+ struct yaffs_obj *obj;
+ int nand_chunk;
+
+ obj = yaffs_find_by_number(dev, p0_val);
+ if (!obj)
+ printk("No obj %d\n", (int)p0_val);
+ else {
+ if(p1_val == 0)
+ nand_chunk = obj->hdr_chunk;
+ else
+ nand_chunk =
+ yaffs_find_chunk_in_file(obj,
+ p1_val, NULL);
+ printk("Nand chunk for %d:%d is %d\n",
+ (int)p0_val, (int)p1_val, nand_chunk);
+ }
+ }
+ }
+
+ mutex_unlock(&yaffs_context_lock);
+
+ return count;
+}
static int yaffs_proc_write(struct file *file, const char *buf,
- unsigned long count, void *data)
+ unsigned long count, void *data)
{
- return yaffs_proc_write_trace_options(file, buf, count, data);
+ if (buf[0] == '.')
+ return yaffs_proc_debug_write(file, buf, count, data);
+ return yaffs_proc_write_trace_options(file, buf, count, data);
}
/* Stuff to handle installation of file systems */
@@ -3483,41 +3389,22 @@ static int __init init_yaffs_fs(void)
int error = 0;
struct file_system_to_install *fsinst;
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs built " __DATE__ " " __TIME__ " Installing. \n")));
-
-#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED
- T(YAFFS_TRACE_ALWAYS,
- (TSTR(" \n\n\n\nYAFFS-WARNING CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED selected.\n\n\n\n")));
-#endif
-
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "yaffs built " __DATE__ " " __TIME__ " Installing.");
-
-
- init_MUTEX(&yaffs_context_lock);
+ mutex_init(&yaffs_context_lock);
/* Install the proc_fs entries */
my_proc_entry = create_proc_entry("yaffs",
- S_IRUGO | S_IFREG,
- YPROC_ROOT);
+ S_IRUGO | S_IFREG, YPROC_ROOT);
if (my_proc_entry) {
my_proc_entry->write_proc = yaffs_proc_write;
my_proc_entry->read_proc = yaffs_proc_read;
my_proc_entry->data = NULL;
- } else
- return -ENOMEM;
-
- debug_proc_entry = create_proc_entry("yaffs_stats",
- S_IRUGO | S_IFREG,
- YPROC_ROOT);
-
- if (debug_proc_entry) {
- debug_proc_entry->write_proc = NULL;
- debug_proc_entry->read_proc = yaffs_stats_proc_read;
- debug_proc_entry->data = NULL;
- } else
+ } else {
return -ENOMEM;
+ }
/* Now add the file system entries */
@@ -3551,11 +3438,10 @@ static void __exit exit_yaffs_fs(void)
struct file_system_to_install *fsinst;
- T(YAFFS_TRACE_ALWAYS,
- (TSTR("yaffs built " __DATE__ " " __TIME__ " removing. \n")));
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "yaffs built " __DATE__ " " __TIME__ " removing.");
remove_proc_entry("yaffs", YPROC_ROOT);
- remove_proc_entry("yaffs_stats", YPROC_ROOT);
fsinst = fs_to_install;
@@ -3569,8 +3455,8 @@ static void __exit exit_yaffs_fs(void)
}
module_init(init_yaffs_fs)
-module_exit(exit_yaffs_fs)
+ module_exit(exit_yaffs_fs)
-MODULE_DESCRIPTION("YAFFS2 - a NAND specific flash file system");
-MODULE_AUTHOR("Charles Manning, Aleph One Ltd., 2002-2010");
+ MODULE_DESCRIPTION("YAFFS2 - a NAND specific flash file system");
+MODULE_AUTHOR("Charles Manning, Aleph One Ltd., 2002-2011");
MODULE_LICENSE("GPL");
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.c b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.c
index cc71746..d277e20 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.c
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.c
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -10,54 +10,46 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
+
#include "yaffs_yaffs1.h"
#include "yportenv.h"
#include "yaffs_trace.h"
#include "yaffs_bitmap.h"
#include "yaffs_getblockinfo.h"
#include "yaffs_nand.h"
+#include "yaffs_attribs.h"
-
-int yaffs1_scan(yaffs_dev_t *dev)
+int yaffs1_scan(struct yaffs_dev *dev)
{
- yaffs_ext_tags tags;
+ struct yaffs_ext_tags tags;
int blk;
- int blockIterator;
- int startIterator;
- int endIterator;
int result;
-
int chunk;
int c;
int deleted;
- yaffs_block_state_t state;
- yaffs_obj_t *hard_list = NULL;
- yaffs_block_info_t *bi;
- __u32 seq_number;
- yaffs_obj_header *oh;
- yaffs_obj_t *in;
- yaffs_obj_t *parent;
-
+ enum yaffs_block_state state;
+ LIST_HEAD(hard_list);
+ struct yaffs_block_info *bi;
+ u32 seq_number;
+ struct yaffs_obj_hdr *oh;
+ struct yaffs_obj *in;
+ struct yaffs_obj *parent;
int alloc_failed = 0;
+ struct yaffs_shadow_fixer *shadow_fixers = NULL;
+ u8 *chunk_data;
- struct yaffs_shadow_fixer_s *shadowFixerList = NULL;
-
-
- __u8 *chunkData;
-
+ yaffs_trace(YAFFS_TRACE_SCAN,
+ "yaffs1_scan starts intstartblk %d intendblk %d...",
+ dev->internal_start_block, dev->internal_end_block);
-
- T(YAFFS_TRACE_SCAN,
- (TSTR("yaffs1_scan starts intstartblk %d intendblk %d..." TENDSTR),
- dev->internal_start_block, dev->internal_end_block));
-
- chunkData = yaffs_get_temp_buffer(dev, __LINE__);
+ chunk_data = yaffs_get_temp_buffer(dev);
dev->seq_number = YAFFS_LOWEST_SEQUENCE_NUMBER;
/* Scan all the blocks to determine their state */
bi = dev->block_info;
- for (blk = dev->internal_start_block; blk <= dev->internal_end_block; blk++) {
+ for (blk = dev->internal_start_block; blk <= dev->internal_end_block;
+ blk++) {
yaffs_clear_chunk_bits(dev, blk);
bi->pages_in_use = 0;
bi->soft_del_pages = 0;
@@ -70,58 +62,51 @@ int yaffs1_scan(yaffs_dev_t *dev)
if (bi->seq_number == YAFFS_SEQUENCE_BAD_BLOCK)
bi->block_state = state = YAFFS_BLOCK_STATE_DEAD;
- T(YAFFS_TRACE_SCAN_DEBUG,
- (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk,
- state, seq_number));
+ yaffs_trace(YAFFS_TRACE_SCAN_DEBUG,
+ "Block scanning block %d state %d seq %d",
+ blk, state, seq_number);
if (state == YAFFS_BLOCK_STATE_DEAD) {
- T(YAFFS_TRACE_BAD_BLOCKS,
- (TSTR("block %d is bad" TENDSTR), blk));
+ yaffs_trace(YAFFS_TRACE_BAD_BLOCKS,
+ "block %d is bad", blk);
} else if (state == YAFFS_BLOCK_STATE_EMPTY) {
- T(YAFFS_TRACE_SCAN_DEBUG,
- (TSTR("Block empty " TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_SCAN_DEBUG, "Block empty ");
dev->n_erased_blocks++;
dev->n_free_chunks += dev->param.chunks_per_block;
}
bi++;
}
- startIterator = dev->internal_start_block;
- endIterator = dev->internal_end_block;
-
/* For each block.... */
- for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator;
- blockIterator++) {
-
- YYIELD();
+ for (blk = dev->internal_start_block;
+ !alloc_failed && blk <= dev->internal_end_block; blk++) {
- YYIELD();
-
- blk = blockIterator;
+ cond_resched();
bi = yaffs_get_block_info(dev, blk);
state = bi->block_state;
deleted = 0;
- /* For each chunk in each block that needs scanning....*/
- for (c = 0; !alloc_failed && c < dev->param.chunks_per_block &&
- state == YAFFS_BLOCK_STATE_NEEDS_SCANNING; c++) {
+ /* For each chunk in each block that needs scanning.... */
+ for (c = 0;
+ !alloc_failed && c < dev->param.chunks_per_block &&
+ state == YAFFS_BLOCK_STATE_NEEDS_SCAN; c++) {
/* Read the tags and decide what to do */
chunk = blk * dev->param.chunks_per_block + c;
result = yaffs_rd_chunk_tags_nand(dev, chunk, NULL,
- &tags);
+ &tags);
/* Let's have a good look at this chunk... */
- if (tags.ecc_result == YAFFS_ECC_RESULT_UNFIXED || tags.is_deleted) {
+ if (tags.ecc_result == YAFFS_ECC_RESULT_UNFIXED ||
+ tags.is_deleted) {
/* YAFFS1 only...
* A deleted chunk
*/
deleted++;
dev->n_free_chunks++;
- /*T((" %d %d deleted\n",blk,c)); */
} else if (!tags.chunk_used) {
/* An unassigned chunk in the block
* This means that either the block is empty or
@@ -129,24 +114,24 @@ int yaffs1_scan(yaffs_dev_t *dev)
*/
if (c == 0) {
- /* We're looking at the first chunk in the block so the block is unused */
+ /* We're looking at the first chunk in
+ *the block so the block is unused */
state = YAFFS_BLOCK_STATE_EMPTY;
dev->n_erased_blocks++;
} else {
- /* this is the block being allocated from */
- T(YAFFS_TRACE_SCAN,
- (TSTR
- (" Allocating from %d %d" TENDSTR),
- blk, c));
+ /* this is the block being allocated */
+ yaffs_trace(YAFFS_TRACE_SCAN,
+ " Allocating from %d %d",
+ blk, c);
state = YAFFS_BLOCK_STATE_ALLOCATING;
dev->alloc_block = blk;
dev->alloc_page = c;
dev->alloc_block_finder = blk;
- /* Set block finder here to encourage the allocator to go forth from here. */
}
- dev->n_free_chunks += (dev->param.chunks_per_block - c);
+ dev->n_free_chunks +=
+ (dev->param.chunks_per_block - c);
} else if (tags.chunk_id > 0) {
/* chunk_id > 0 so it is a data chunk... */
unsigned int endpos;
@@ -155,133 +140,131 @@ int yaffs1_scan(yaffs_dev_t *dev)
bi->pages_in_use++;
in = yaffs_find_or_create_by_number(dev,
- tags.
- obj_id,
- YAFFS_OBJECT_TYPE_FILE);
- /* PutChunkIntoFile checks for a clash (two data chunks with
- * the same chunk_id).
+ tags.obj_id,
+ YAFFS_OBJECT_TYPE_FILE);
+ /* PutChunkIntoFile checks for a clash
+ * (two data chunks with the same chunk_id).
*/
if (!in)
alloc_failed = 1;
if (in) {
- if (!yaffs_put_chunk_in_file(in, tags.chunk_id, chunk, 1))
+ if (!yaffs_put_chunk_in_file
+ (in, tags.chunk_id, chunk, 1))
alloc_failed = 1;
}
endpos =
- (tags.chunk_id - 1) * dev->data_bytes_per_chunk +
+ (tags.chunk_id - 1) *
+ dev->data_bytes_per_chunk +
tags.n_bytes;
if (in &&
- in->variant_type == YAFFS_OBJECT_TYPE_FILE
- && in->variant.file_variant.scanned_size <
- endpos) {
- in->variant.file_variant.
- scanned_size = endpos;
+ in->variant_type ==
+ YAFFS_OBJECT_TYPE_FILE &&
+ in->variant.file_variant.scanned_size <
+ endpos) {
+ in->variant.file_variant.scanned_size =
+ endpos;
if (!dev->param.use_header_file_size) {
- in->variant.file_variant.
- file_size =
- in->variant.file_variant.
- scanned_size;
+ in->variant.
+ file_variant.file_size =
+ in->variant.
+ file_variant.scanned_size;
}
}
- /* T((" %d %d data %d %d\n",blk,c,tags.obj_id,tags.chunk_id)); */
} else {
/* chunk_id == 0, so it is an ObjectHeader.
- * Thus, we read in the object header and make the object
+ * Make the object
*/
yaffs_set_chunk_bit(dev, blk, c);
bi->pages_in_use++;
result = yaffs_rd_chunk_tags_nand(dev, chunk,
- chunkData,
- NULL);
+ chunk_data,
+ NULL);
- oh = (yaffs_obj_header *) chunkData;
+ oh = (struct yaffs_obj_hdr *)chunk_data;
- in = yaffs_find_by_number(dev,
- tags.obj_id);
+ in = yaffs_find_by_number(dev, tags.obj_id);
if (in && in->variant_type != oh->type) {
/* This should not happen, but somehow
- * Wev'e ended up with an obj_id that has been reused but not yet
- * deleted, and worse still it has changed type. Delete the old object.
+ * Wev'e ended up with an obj_id that
+ * has been reused but not yet deleted,
+ * and worse still it has changed type.
+ * Delete the old object.
*/
yaffs_del_obj(in);
-
- in = 0;
+ in = NULL;
}
in = yaffs_find_or_create_by_number(dev,
- tags.
- obj_id,
- oh->type);
+ tags.obj_id,
+ oh->type);
if (!in)
alloc_failed = 1;
if (in && oh->shadows_obj > 0) {
- struct yaffs_shadow_fixer_s *fixer;
- fixer = YMALLOC(sizeof(struct yaffs_shadow_fixer_s));
+ struct yaffs_shadow_fixer *fixer;
+ fixer =
+ kmalloc(sizeof
+ (struct yaffs_shadow_fixer),
+ GFP_NOFS);
if (fixer) {
- fixer->next = shadowFixerList;
- shadowFixerList = fixer;
+ fixer->next = shadow_fixers;
+ shadow_fixers = fixer;
fixer->obj_id = tags.obj_id;
- fixer->shadowed_id = oh->shadows_obj;
- T(YAFFS_TRACE_SCAN,
- (TSTR
- (" Shadow fixer: %d shadows %d" TENDSTR),
- fixer->obj_id, fixer->shadowed_id));
+ fixer->shadowed_id =
+ oh->shadows_obj;
+ yaffs_trace(YAFFS_TRACE_SCAN,
+ " Shadow fixer: %d shadows %d",
+ fixer->obj_id,
+ fixer->shadowed_id);
}
}
if (in && in->valid) {
- /* We have already filled this one. We have a duplicate and need to resolve it. */
-
- unsigned existingSerial = in->serial;
- unsigned newSerial = tags.serial_number;
-
- if (((existingSerial + 1) & 3) == newSerial) {
- /* Use new one - destroy the exisiting one */
+ /* We have already filled this one.
+ * We have a duplicate and need to
+ * resolve it. */
+
+ unsigned existing_serial = in->serial;
+ unsigned new_serial =
+ tags.serial_number;
+
+ if (((existing_serial + 1) & 3) ==
+ new_serial) {
+ /* Use new one - destroy the
+ * exisiting one */
yaffs_chunk_del(dev,
- in->hdr_chunk,
- 1, __LINE__);
+ in->hdr_chunk,
+ 1, __LINE__);
in->valid = 0;
} else {
- /* Use existing - destroy this one. */
+ /* Use existing - destroy
+ * this one. */
yaffs_chunk_del(dev, chunk, 1,
- __LINE__);
+ __LINE__);
}
}
if (in && !in->valid &&
(tags.obj_id == YAFFS_OBJECTID_ROOT ||
- tags.obj_id == YAFFS_OBJECTID_LOSTNFOUND)) {
- /* We only load some info, don't fiddle with directory structure */
+ tags.obj_id ==
+ YAFFS_OBJECTID_LOSTNFOUND)) {
+ /* We only load some info, don't fiddle
+ * with directory structure */
in->valid = 1;
in->variant_type = oh->type;
in->yst_mode = oh->yst_mode;
-#ifdef CONFIG_YAFFS_WINCE
- in->win_atime[0] = oh->win_atime[0];
- in->win_ctime[0] = oh->win_ctime[0];
- in->win_mtime[0] = oh->win_mtime[0];
- in->win_atime[1] = oh->win_atime[1];
- in->win_ctime[1] = oh->win_ctime[1];
- in->win_mtime[1] = oh->win_mtime[1];
-#else
- in->yst_uid = oh->yst_uid;
- in->yst_gid = oh->yst_gid;
- in->yst_atime = oh->yst_atime;
- in->yst_mtime = oh->yst_mtime;
- in->yst_ctime = oh->yst_ctime;
- in->yst_rdev = oh->yst_rdev;
-#endif
+ yaffs_load_attribs(in, oh);
in->hdr_chunk = chunk;
in->serial = tags.serial_number;
@@ -292,21 +275,7 @@ int yaffs1_scan(yaffs_dev_t *dev)
in->variant_type = oh->type;
in->yst_mode = oh->yst_mode;
-#ifdef CONFIG_YAFFS_WINCE
- in->win_atime[0] = oh->win_atime[0];
- in->win_ctime[0] = oh->win_ctime[0];
- in->win_mtime[0] = oh->win_mtime[0];
- in->win_atime[1] = oh->win_atime[1];
- in->win_ctime[1] = oh->win_ctime[1];
- in->win_mtime[1] = oh->win_mtime[1];
-#else
- in->yst_uid = oh->yst_uid;
- in->yst_gid = oh->yst_gid;
- in->yst_atime = oh->yst_atime;
- in->yst_mtime = oh->yst_mtime;
- in->yst_ctime = oh->yst_ctime;
- in->yst_rdev = oh->yst_rdev;
-#endif
+ yaffs_load_attribs(in, oh);
in->hdr_chunk = chunk;
in->serial = tags.serial_number;
@@ -327,57 +296,43 @@ int yaffs1_scan(yaffs_dev_t *dev)
YAFFS_OBJECT_TYPE_UNKNOWN) {
/* Set up as a directory */
parent->variant_type =
- YAFFS_OBJECT_TYPE_DIRECTORY;
- YINIT_LIST_HEAD(&parent->variant.
- dir_variant.
- children);
- } else if (!parent || parent->variant_type !=
- YAFFS_OBJECT_TYPE_DIRECTORY) {
- /* Hoosterman, another problem....
- * We're trying to use a non-directory as a directory
+ YAFFS_OBJECT_TYPE_DIRECTORY;
+ INIT_LIST_HEAD(&parent->
+ variant.dir_variant.
+ children);
+ } else if (!parent ||
+ parent->variant_type !=
+ YAFFS_OBJECT_TYPE_DIRECTORY) {
+ /* Hoosterman, a problem....
+ * We're trying to use a
+ * non-directory as a directory
*/
- T(YAFFS_TRACE_ERROR,
- (TSTR
- ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found."
- TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found."
+ );
parent = dev->lost_n_found;
}
yaffs_add_obj_to_dir(parent, in);
- if (0 && (parent == dev->del_dir ||
- parent == dev->unlinked_dir)) {
- in->deleted = 1; /* If it is unlinked at start up then it wants deleting */
- dev->n_deleted_files++;
- }
- /* Note re hardlinks.
- * Since we might scan a hardlink before its equivalent object is scanned
- * we put them all in a list.
- * After scanning is complete, we should have all the objects, so we run through this
- * list and fix up all the chains.
- */
-
switch (in->variant_type) {
case YAFFS_OBJECT_TYPE_UNKNOWN:
/* Todo got a problem */
break;
case YAFFS_OBJECT_TYPE_FILE:
- if (dev->param.use_header_file_size)
-
- in->variant.file_variant.
- file_size =
- oh->file_size;
-
+ if (dev->param.
+ use_header_file_size)
+ in->variant.
+ file_variant.file_size
+ = yaffs_oh_to_size(oh);
break;
case YAFFS_OBJECT_TYPE_HARDLINK:
- in->variant.hardlink_variant.
- equiv_id =
- oh->equiv_id;
- in->hard_links.next =
- (struct ylist_head *)
- hard_list;
- hard_list = in;
+ in->variant.
+ hardlink_variant.equiv_id =
+ oh->equiv_id;
+ list_add(&in->hard_links,
+ &hard_list);
break;
case YAFFS_OBJECT_TYPE_DIRECTORY:
/* Do nothing */
@@ -386,24 +341,27 @@ int yaffs1_scan(yaffs_dev_t *dev)
/* Do nothing */
break;
case YAFFS_OBJECT_TYPE_SYMLINK:
- in->variant.symlink_variant.alias =
+ in->variant.symlink_variant.
+ alias =
yaffs_clone_str(oh->alias);
- if (!in->variant.symlink_variant.alias)
+ if (!in->variant.
+ symlink_variant.alias)
alloc_failed = 1;
break;
}
-
}
}
}
- if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
- /* If we got this far while scanning, then the block is fully allocated.*/
+ if (state == YAFFS_BLOCK_STATE_NEEDS_SCAN) {
+ /* If we got this far while scanning,
+ * then the block is fully allocated. */
state = YAFFS_BLOCK_STATE_FULL;
}
if (state == YAFFS_BLOCK_STATE_ALLOCATING) {
- /* If the block was partially allocated then treat it as fully allocated.*/
+ /* If the block was partially allocated then
+ * treat it as fully allocated. */
state = YAFFS_BLOCK_STATE_FULL;
dev->alloc_block = -1;
}
@@ -413,31 +371,32 @@ int yaffs1_scan(yaffs_dev_t *dev)
/* Now let's see if it was dirty */
if (bi->pages_in_use == 0 &&
!bi->has_shrink_hdr &&
- bi->block_state == YAFFS_BLOCK_STATE_FULL) {
+ bi->block_state == YAFFS_BLOCK_STATE_FULL)
yaffs_block_became_dirty(dev, blk);
- }
-
}
-
/* Ok, we've done all the scanning.
* Fix up the hard link chains.
- * We should now have scanned all the objects, now it's time to add these
- * hardlinks.
+ * We should now have scanned all the objects, now it's time to add
+ * these hardlinks.
*/
- yaffs_link_fixup(dev, hard_list);
+ yaffs_link_fixup(dev, &hard_list);
- /* Fix up any shadowed objects */
+ /*
+ * Fix up any shadowed objects.
+ * There should not be more than one of these.
+ */
{
- struct yaffs_shadow_fixer_s *fixer;
- yaffs_obj_t *obj;
-
- while (shadowFixerList) {
- fixer = shadowFixerList;
- shadowFixerList = fixer->next;
- /* Complete the rename transaction by deleting the shadowed object
- * then setting the object header to unshadowed.
+ struct yaffs_shadow_fixer *fixer;
+ struct yaffs_obj *obj;
+
+ while (shadow_fixers) {
+ fixer = shadow_fixers;
+ shadow_fixers = fixer->next;
+ /* Complete the rename transaction by deleting the
+ * shadowed object then setting the object header
+ to unshadowed.
*/
obj = yaffs_find_by_number(dev, fixer->shadowed_id);
if (obj)
@@ -448,18 +407,16 @@ int yaffs1_scan(yaffs_dev_t *dev)
if (obj)
yaffs_update_oh(obj, NULL, 1, 0, 0, NULL);
- YFREE(fixer);
+ kfree(fixer);
}
}
- yaffs_release_temp_buffer(dev, chunkData, __LINE__);
+ yaffs_release_temp_buffer(dev, chunk_data);
if (alloc_failed)
return YAFFS_FAIL;
- T(YAFFS_TRACE_SCAN, (TSTR("yaffs1_scan ends" TENDSTR)));
-
+ yaffs_trace(YAFFS_TRACE_SCAN, "yaffs1_scan ends");
return YAFFS_OK;
}
-
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.h b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.h
index 1f60b0c..97e2fdd 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.h
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs1.h
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet another Flash File System . A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -17,6 +17,6 @@
#define __YAFFS_YAFFS1_H__
#include "yaffs_guts.h"
-int yaffs1_scan(yaffs_dev_t *dev);
+int yaffs1_scan(struct yaffs_dev *dev);
#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c
index 58c3600..f1dc972 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -11,16 +11,16 @@
* published by the Free Software Foundation.
*/
-
#include "yaffs_guts.h"
#include "yaffs_trace.h"
#include "yaffs_yaffs2.h"
#include "yaffs_checkptrw.h"
#include "yaffs_bitmap.h"
-#include "yaffs_qsort.h"
#include "yaffs_nand.h"
#include "yaffs_getblockinfo.h"
#include "yaffs_verify.h"
+#include "yaffs_attribs.h"
+#include "yaffs_summary.h"
/*
* Checkpoints are really no benefit on very small partitions.
@@ -29,26 +29,24 @@
* the partition is at least this big.
*/
#define YAFFS_CHECKPOINT_MIN_BLOCKS 60
-
#define YAFFS_SMALL_HOLE_THRESHOLD 4
-
/*
* Oldest Dirty Sequence Number handling.
*/
-
+
/* yaffs_calc_oldest_dirty_seq()
* yaffs2_find_oldest_dirty_seq()
* Calculate the oldest dirty sequence number if we don't know it.
*/
-void yaffs_calc_oldest_dirty_seq(yaffs_dev_t *dev)
+void yaffs_calc_oldest_dirty_seq(struct yaffs_dev *dev)
{
int i;
unsigned seq;
unsigned block_no = 0;
- yaffs_block_info_t *b;
+ struct yaffs_block_info *b;
- if(!dev->param.is_yaffs2)
+ if (!dev->param.is_yaffs2)
return;
/* Find the oldest dirty sequence number. */
@@ -56,44 +54,44 @@ void yaffs_calc_oldest_dirty_seq(yaffs_dev_t *dev)
b = dev->block_info;
for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) {
if (b->block_state == YAFFS_BLOCK_STATE_FULL &&
- (b->pages_in_use - b->soft_del_pages) < dev->param.chunks_per_block &&
- b->seq_number < seq) {
+ (b->pages_in_use - b->soft_del_pages) <
+ dev->param.chunks_per_block &&
+ b->seq_number < seq) {
seq = b->seq_number;
block_no = i;
}
b++;
}
- if(block_no){
+ if (block_no) {
dev->oldest_dirty_seq = seq;
dev->oldest_dirty_block = block_no;
}
-
}
-
-void yaffs2_find_oldest_dirty_seq(yaffs_dev_t *dev)
+void yaffs2_find_oldest_dirty_seq(struct yaffs_dev *dev)
{
- if(!dev->param.is_yaffs2)
+ if (!dev->param.is_yaffs2)
return;
- if(!dev->oldest_dirty_seq)
+ if (!dev->oldest_dirty_seq)
yaffs_calc_oldest_dirty_seq(dev);
}
/*
* yaffs_clear_oldest_dirty_seq()
* Called when a block is erased or marked bad. (ie. when its seq_number
- * becomes invalid). If the value matches the oldest then we clear
+ * becomes invalid). If the value matches the oldest then we clear
* dev->oldest_dirty_seq to force its recomputation.
*/
-void yaffs2_clear_oldest_dirty_seq(yaffs_dev_t *dev, yaffs_block_info_t *bi)
+void yaffs2_clear_oldest_dirty_seq(struct yaffs_dev *dev,
+ struct yaffs_block_info *bi)
{
- if(!dev->param.is_yaffs2)
+ if (!dev->param.is_yaffs2)
return;
- if(!bi || bi->seq_number == dev->oldest_dirty_seq){
+ if (!bi || bi->seq_number == dev->oldest_dirty_seq) {
dev->oldest_dirty_seq = 0;
dev->oldest_dirty_block = 0;
}
@@ -104,21 +102,21 @@ void yaffs2_clear_oldest_dirty_seq(yaffs_dev_t *dev, yaffs_block_info_t *bi)
* Update the oldest dirty sequence number whenever we dirty a block.
* Only do this if the oldest_dirty_seq is actually being tracked.
*/
-void yaffs2_update_oldest_dirty_seq(yaffs_dev_t *dev, unsigned block_no, yaffs_block_info_t *bi)
+void yaffs2_update_oldest_dirty_seq(struct yaffs_dev *dev, unsigned block_no,
+ struct yaffs_block_info *bi)
{
- if(!dev->param.is_yaffs2)
+ if (!dev->param.is_yaffs2)
return;
- if(dev->oldest_dirty_seq){
- if(dev->oldest_dirty_seq > bi->seq_number){
+ if (dev->oldest_dirty_seq) {
+ if (dev->oldest_dirty_seq > bi->seq_number) {
dev->oldest_dirty_seq = bi->seq_number;
dev->oldest_dirty_block = block_no;
}
}
}
-int yaffs_block_ok_for_gc(yaffs_dev_t *dev,
- yaffs_block_info_t *bi)
+int yaffs_block_ok_for_gc(struct yaffs_dev *dev, struct yaffs_block_info *bi)
{
if (!dev->param.is_yaffs2)
@@ -129,8 +127,8 @@ int yaffs_block_ok_for_gc(yaffs_dev_t *dev,
yaffs2_find_oldest_dirty_seq(dev);
- /* Can't do gc of this block if there are any blocks older than this one that have
- * discarded pages.
+ /* Can't do gc of this block if there are any blocks older than this
+ * one that have discarded pages.
*/
return (bi->seq_number <= dev->oldest_dirty_seq);
}
@@ -140,32 +138,30 @@ int yaffs_block_ok_for_gc(yaffs_dev_t *dev,
* periodically finds the oldest full block by sequence number for refreshing.
* Only for yaffs2.
*/
-__u32 yaffs2_find_refresh_block(yaffs_dev_t *dev)
+u32 yaffs2_find_refresh_block(struct yaffs_dev *dev)
{
- __u32 b ;
-
- __u32 oldest = 0;
- __u32 oldestSequence = 0;
-
- yaffs_block_info_t *bi;
+ u32 b;
+ u32 oldest = 0;
+ u32 oldest_seq = 0;
+ struct yaffs_block_info *bi;
- if(!dev->param.is_yaffs2)
+ if (!dev->param.is_yaffs2)
return oldest;
/*
* If refresh period < 10 then refreshing is disabled.
*/
- if(dev->param.refresh_period < 10)
- return oldest;
+ if (dev->param.refresh_period < 10)
+ return oldest;
- /*
- * Fix broken values.
- */
- if(dev->refresh_skip > dev->param.refresh_period)
- dev->refresh_skip = dev->param.refresh_period;
+ /*
+ * Fix broken values.
+ */
+ if (dev->refresh_skip > dev->param.refresh_period)
+ dev->refresh_skip = dev->param.refresh_period;
- if(dev->refresh_skip > 0)
- return oldest;
+ if (dev->refresh_skip > 0)
+ return oldest;
/*
* Refresh skip is now zero.
@@ -175,84 +171,86 @@ __u32 yaffs2_find_refresh_block(yaffs_dev_t *dev)
dev->refresh_skip = dev->param.refresh_period;
dev->refresh_count++;
bi = dev->block_info;
- for (b = dev->internal_start_block; b <=dev->internal_end_block; b++){
+ for (b = dev->internal_start_block; b <= dev->internal_end_block; b++) {
- if (bi->block_state == YAFFS_BLOCK_STATE_FULL){
+ if (bi->block_state == YAFFS_BLOCK_STATE_FULL) {
- if(oldest < 1 ||
- bi->seq_number < oldestSequence){
- oldest = b;
- oldestSequence = bi->seq_number;
- }
+ if (oldest < 1 || bi->seq_number < oldest_seq) {
+ oldest = b;
+ oldest_seq = bi->seq_number;
+ }
}
bi++;
}
if (oldest > 0) {
- T(YAFFS_TRACE_GC,
- (TSTR("GC refresh count %d selected block %d with seq_number %d" TENDSTR),
- dev->refresh_count, oldest, oldestSequence));
+ yaffs_trace(YAFFS_TRACE_GC,
+ "GC refresh count %d selected block %d with seq_number %d",
+ dev->refresh_count, oldest, oldest_seq);
}
return oldest;
}
-int yaffs2_checkpt_required(yaffs_dev_t *dev)
+int yaffs2_checkpt_required(struct yaffs_dev *dev)
{
int nblocks;
-
- if(!dev->param.is_yaffs2)
+
+ if (!dev->param.is_yaffs2)
return 0;
-
- nblocks = dev->internal_end_block - dev->internal_start_block + 1 ;
- return !dev->param.skip_checkpt_wr &&
- !dev->read_only &&
- (nblocks >= YAFFS_CHECKPOINT_MIN_BLOCKS);
+ nblocks = dev->internal_end_block - dev->internal_start_block + 1;
+
+ return !dev->param.skip_checkpt_wr &&
+ !dev->read_only && (nblocks >= YAFFS_CHECKPOINT_MIN_BLOCKS);
}
-int yaffs_calc_checkpt_blocks_required(yaffs_dev_t *dev)
+int yaffs_calc_checkpt_blocks_required(struct yaffs_dev *dev)
{
int retval;
+ int n_bytes = 0;
+ int n_blocks;
+ int dev_blocks;
- if(!dev->param.is_yaffs2)
+ if (!dev->param.is_yaffs2)
return 0;
- if (!dev->checkpoint_blocks_required &&
- yaffs2_checkpt_required(dev)){
+ if (!dev->checkpoint_blocks_required && yaffs2_checkpt_required(dev)) {
/* Not a valid value so recalculate */
- int n_bytes = 0;
- int nBlocks;
- int devBlocks = (dev->param.end_block - dev->param.start_block + 1);
-
- n_bytes += sizeof(yaffs_checkpt_validty_t);
- n_bytes += sizeof(yaffs_checkpt_dev_t);
- n_bytes += devBlocks * sizeof(yaffs_block_info_t);
- n_bytes += devBlocks * dev->chunk_bit_stride;
- n_bytes += (sizeof(yaffs_checkpt_obj_t) + sizeof(__u32)) * (dev->n_obj);
- n_bytes += (dev->tnode_size + sizeof(__u32)) * (dev->n_tnodes);
- n_bytes += sizeof(yaffs_checkpt_validty_t);
- n_bytes += sizeof(__u32); /* checksum*/
-
- /* Round up and add 2 blocks to allow for some bad blocks, so add 3 */
-
- nBlocks = (n_bytes/(dev->data_bytes_per_chunk * dev->param.chunks_per_block)) + 3;
-
- dev->checkpoint_blocks_required = nBlocks;
+ dev_blocks = dev->param.end_block - dev->param.start_block + 1;
+ n_bytes += sizeof(struct yaffs_checkpt_validity);
+ n_bytes += sizeof(struct yaffs_checkpt_dev);
+ n_bytes += dev_blocks * sizeof(struct yaffs_block_info);
+ n_bytes += dev_blocks * dev->chunk_bit_stride;
+ n_bytes +=
+ (sizeof(struct yaffs_checkpt_obj) + sizeof(u32)) *
+ dev->n_obj;
+ n_bytes += (dev->tnode_size + sizeof(u32)) * dev->n_tnodes;
+ n_bytes += sizeof(struct yaffs_checkpt_validity);
+ n_bytes += sizeof(u32); /* checksum */
+
+ /* Round up and add 2 blocks to allow for some bad blocks,
+ * so add 3 */
+
+ n_blocks =
+ (n_bytes /
+ (dev->data_bytes_per_chunk *
+ dev->param.chunks_per_block)) + 3;
+
+ dev->checkpoint_blocks_required = n_blocks;
}
retval = dev->checkpoint_blocks_required - dev->blocks_in_checkpt;
- if(retval < 0)
+ if (retval < 0)
retval = 0;
return retval;
}
/*--------------------- Checkpointing --------------------*/
-
-static int yaffs2_wr_checkpt_validity_marker(yaffs_dev_t *dev, int head)
+static int yaffs2_wr_checkpt_validity_marker(struct yaffs_dev *dev, int head)
{
- yaffs_checkpt_validty_t cp;
+ struct yaffs_checkpt_validity cp;
memset(&cp, 0, sizeof(cp));
@@ -261,27 +259,26 @@ static int yaffs2_wr_checkpt_validity_marker(yaffs_dev_t *dev, int head)
cp.version = YAFFS_CHECKPOINT_VERSION;
cp.head = (head) ? 1 : 0;
- return (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp)) ?
- 1 : 0;
+ return (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp)) ? 1 : 0;
}
-static int yaffs2_rd_checkpt_validty_marker(yaffs_dev_t *dev, int head)
+static int yaffs2_rd_checkpt_validity_marker(struct yaffs_dev *dev, int head)
{
- yaffs_checkpt_validty_t cp;
+ struct yaffs_checkpt_validity cp;
int ok;
ok = (yaffs2_checkpt_rd(dev, &cp, sizeof(cp)) == sizeof(cp));
if (ok)
ok = (cp.struct_type == sizeof(cp)) &&
- (cp.magic == YAFFS_MAGIC) &&
- (cp.version == YAFFS_CHECKPOINT_VERSION) &&
- (cp.head == ((head) ? 1 : 0));
+ (cp.magic == YAFFS_MAGIC) &&
+ (cp.version == YAFFS_CHECKPOINT_VERSION) &&
+ (cp.head == ((head) ? 1 : 0));
return ok ? 1 : 0;
}
-static void yaffs2_dev_to_checkpt_dev(yaffs_checkpt_dev_t *cp,
- yaffs_dev_t *dev)
+static void yaffs2_dev_to_checkpt_dev(struct yaffs_checkpt_dev *cp,
+ struct yaffs_dev *dev)
{
cp->n_erased_blocks = dev->n_erased_blocks;
cp->alloc_block = dev->alloc_block;
@@ -295,8 +292,8 @@ static void yaffs2_dev_to_checkpt_dev(yaffs_checkpt_dev_t *cp,
}
-static void yaffs_checkpt_dev_to_dev(yaffs_dev_t *dev,
- yaffs_checkpt_dev_t *cp)
+static void yaffs_checkpt_dev_to_dev(struct yaffs_dev *dev,
+ struct yaffs_checkpt_dev *cp)
{
dev->n_erased_blocks = cp->n_erased_blocks;
dev->alloc_block = cp->alloc_block;
@@ -309,42 +306,40 @@ static void yaffs_checkpt_dev_to_dev(yaffs_dev_t *dev,
dev->seq_number = cp->seq_number;
}
-
-static int yaffs2_wr_checkpt_dev(yaffs_dev_t *dev)
+static int yaffs2_wr_checkpt_dev(struct yaffs_dev *dev)
{
- yaffs_checkpt_dev_t cp;
- __u32 n_bytes;
- __u32 nBlocks = (dev->internal_end_block - dev->internal_start_block + 1);
-
+ struct yaffs_checkpt_dev cp;
+ u32 n_bytes;
+ u32 n_blocks = dev->internal_end_block - dev->internal_start_block + 1;
int ok;
- /* Write device runtime values*/
+ /* Write device runtime values */
yaffs2_dev_to_checkpt_dev(&cp, dev);
cp.struct_type = sizeof(cp);
ok = (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp));
+ if (!ok)
+ return 0;
/* Write block info */
- if (ok) {
- n_bytes = nBlocks * sizeof(yaffs_block_info_t);
- ok = (yaffs2_checkpt_wr(dev, dev->block_info, n_bytes) == n_bytes);
- }
+ n_bytes = n_blocks * sizeof(struct yaffs_block_info);
+ ok = (yaffs2_checkpt_wr(dev, dev->block_info, n_bytes) == n_bytes);
+ if (!ok)
+ return 0;
/* Write chunk bits */
- if (ok) {
- n_bytes = nBlocks * dev->chunk_bit_stride;
- ok = (yaffs2_checkpt_wr(dev, dev->chunk_bits, n_bytes) == n_bytes);
- }
- return ok ? 1 : 0;
+ n_bytes = n_blocks * dev->chunk_bit_stride;
+ ok = (yaffs2_checkpt_wr(dev, dev->chunk_bits, n_bytes) == n_bytes);
+ return ok ? 1 : 0;
}
-static int yaffs2_rd_checkpt_dev(yaffs_dev_t *dev)
+static int yaffs2_rd_checkpt_dev(struct yaffs_dev *dev)
{
- yaffs_checkpt_dev_t cp;
- __u32 n_bytes;
- __u32 nBlocks = (dev->internal_end_block - dev->internal_start_block + 1);
-
+ struct yaffs_checkpt_dev cp;
+ u32 n_bytes;
+ u32 n_blocks =
+ (dev->internal_end_block - dev->internal_start_block + 1);
int ok;
ok = (yaffs2_checkpt_rd(dev, &cp, sizeof(cp)) == sizeof(cp));
@@ -354,26 +349,25 @@ static int yaffs2_rd_checkpt_dev(yaffs_dev_t *dev)
if (cp.struct_type != sizeof(cp))
return 0;
-
yaffs_checkpt_dev_to_dev(dev, &cp);
- n_bytes = nBlocks * sizeof(yaffs_block_info_t);
+ n_bytes = n_blocks * sizeof(struct yaffs_block_info);
ok = (yaffs2_checkpt_rd(dev, dev->block_info, n_bytes) == n_bytes);
if (!ok)
return 0;
- n_bytes = nBlocks * dev->chunk_bit_stride;
+
+ n_bytes = n_blocks * dev->chunk_bit_stride;
ok = (yaffs2_checkpt_rd(dev, dev->chunk_bits, n_bytes) == n_bytes);
return ok ? 1 : 0;
}
-static void yaffs2_obj_checkpt_obj(yaffs_checkpt_obj_t *cp,
- yaffs_obj_t *obj)
+static void yaffs2_obj_checkpt_obj(struct yaffs_checkpt_obj *cp,
+ struct yaffs_obj *obj)
{
-
cp->obj_id = obj->obj_id;
cp->parent_id = (obj->parent) ? obj->parent->obj_id : 0;
cp->hdr_chunk = obj->hdr_chunk;
@@ -393,36 +387,35 @@ static void yaffs2_obj_checkpt_obj(yaffs_checkpt_obj_t *cp,
cp->size_or_equiv_obj = obj->variant.hardlink_variant.equiv_id;
}
-static int taffs2_checkpt_obj_to_obj(yaffs_obj_t *obj, yaffs_checkpt_obj_t *cp)
+static int yaffs2_checkpt_obj_to_obj(struct yaffs_obj *obj,
+ struct yaffs_checkpt_obj *cp)
{
-
- yaffs_obj_t *parent;
+ struct yaffs_obj *parent;
if (obj->variant_type != cp->variant_type) {
- T(YAFFS_TRACE_ERROR, (TSTR("Checkpoint read object %d type %d "
- TCONT("chunk %d does not match existing object type %d")
- TENDSTR), cp->obj_id, cp->variant_type, cp->hdr_chunk,
- obj->variant_type));
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "Checkpoint read object %d type %d chunk %d does not match existing object type %d",
+ cp->obj_id, cp->variant_type, cp->hdr_chunk,
+ obj->variant_type);
return 0;
}
obj->obj_id = cp->obj_id;
if (cp->parent_id)
- parent = yaffs_find_or_create_by_number(
- obj->my_dev,
- cp->parent_id,
- YAFFS_OBJECT_TYPE_DIRECTORY);
+ parent = yaffs_find_or_create_by_number(obj->my_dev,
+ cp->parent_id,
+ YAFFS_OBJECT_TYPE_DIRECTORY);
else
parent = NULL;
if (parent) {
if (parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) {
- T(YAFFS_TRACE_ALWAYS, (TSTR("Checkpoint read object %d parent %d type %d"
- TCONT(" chunk %d Parent type, %d, not directory")
- TENDSTR),
- cp->obj_id, cp->parent_id, cp->variant_type,
- cp->hdr_chunk, parent->variant_type));
+ yaffs_trace(YAFFS_TRACE_ALWAYS,
+ "Checkpoint read object %d parent %d type %d chunk %d Parent type, %d, not directory",
+ cp->obj_id, cp->parent_id,
+ cp->variant_type, cp->hdr_chunk,
+ parent->variant_type);
return 0;
}
yaffs_add_obj_to_dir(parent, obj);
@@ -449,133 +442,139 @@ static int taffs2_checkpt_obj_to_obj(yaffs_obj_t *obj, yaffs_checkpt_obj_t *cp)
return 1;
}
-
-
-static int yaffs2_checkpt_tnode_worker(yaffs_obj_t *in, yaffs_tnode_t *tn,
- __u32 level, int chunk_offset)
+static int yaffs2_checkpt_tnode_worker(struct yaffs_obj *in,
+ struct yaffs_tnode *tn, u32 level,
+ int chunk_offset)
{
int i;
- yaffs_dev_t *dev = in->my_dev;
+ struct yaffs_dev *dev = in->my_dev;
int ok = 1;
-
- if (tn) {
- if (level > 0) {
-
- for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) {
- if (tn->internal[i]) {
- ok = yaffs2_checkpt_tnode_worker(in,
- tn->internal[i],
- level - 1,
- (chunk_offset<<YAFFS_TNODES_INTERNAL_BITS) + i);
- }
- }
- } else if (level == 0) {
- __u32 baseOffset = chunk_offset << YAFFS_TNODES_LEVEL0_BITS;
- ok = (yaffs2_checkpt_wr(dev, &baseOffset, sizeof(baseOffset)) == sizeof(baseOffset));
- if (ok)
- ok = (yaffs2_checkpt_wr(dev, tn, dev->tnode_size) == dev->tnode_size);
+ u32 base_offset;
+
+ if (!tn)
+ return 1;
+
+ if (level > 0) {
+ for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) {
+ if (!tn->internal[i])
+ continue;
+ ok = yaffs2_checkpt_tnode_worker(in,
+ tn->internal[i],
+ level - 1,
+ (chunk_offset <<
+ YAFFS_TNODES_INTERNAL_BITS) + i);
}
+ return ok;
}
- return ok;
+ /* Level 0 tnode */
+ base_offset = chunk_offset << YAFFS_TNODES_LEVEL0_BITS;
+ ok = (yaffs2_checkpt_wr(dev, &base_offset, sizeof(base_offset)) ==
+ sizeof(base_offset));
+ if (ok)
+ ok = (yaffs2_checkpt_wr(dev, tn, dev->tnode_size) ==
+ dev->tnode_size);
+ return ok;
}
-static int yaffs2_wr_checkpt_tnodes(yaffs_obj_t *obj)
+static int yaffs2_wr_checkpt_tnodes(struct yaffs_obj *obj)
{
- __u32 endMarker = ~0;
+ u32 end_marker = ~0;
int ok = 1;
- if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) {
- ok = yaffs2_checkpt_tnode_worker(obj,
- obj->variant.file_variant.top,
- obj->variant.file_variant.top_level,
- 0);
- if (ok)
- ok = (yaffs2_checkpt_wr(obj->my_dev, &endMarker, sizeof(endMarker)) ==
- sizeof(endMarker));
- }
+ if (obj->variant_type != YAFFS_OBJECT_TYPE_FILE)
+ return ok;
+
+ ok = yaffs2_checkpt_tnode_worker(obj,
+ obj->variant.file_variant.top,
+ obj->variant.file_variant.
+ top_level, 0);
+ if (ok)
+ ok = (yaffs2_checkpt_wr(obj->my_dev, &end_marker,
+ sizeof(end_marker)) == sizeof(end_marker));
return ok ? 1 : 0;
}
-static int yaffs2_rd_checkpt_tnodes(yaffs_obj_t *obj)
+static int yaffs2_rd_checkpt_tnodes(struct yaffs_obj *obj)
{
- __u32 baseChunk;
+ u32 base_chunk;
int ok = 1;
- yaffs_dev_t *dev = obj->my_dev;
- yaffs_file_s *fileStructPtr = &obj->variant.file_variant;
- yaffs_tnode_t *tn;
+ struct yaffs_dev *dev = obj->my_dev;
+ struct yaffs_file_var *file_stuct_ptr = &obj->variant.file_variant;
+ struct yaffs_tnode *tn;
int nread = 0;
- ok = (yaffs2_checkpt_rd(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk));
+ ok = (yaffs2_checkpt_rd(dev, &base_chunk, sizeof(base_chunk)) ==
+ sizeof(base_chunk));
- while (ok && (~baseChunk)) {
+ while (ok && (~base_chunk)) {
nread++;
/* Read level 0 tnode */
-
tn = yaffs_get_tnode(dev);
- if (tn){
- ok = (yaffs2_checkpt_rd(dev, tn, dev->tnode_size) == dev->tnode_size);
- } else
+ if (tn)
+ ok = (yaffs2_checkpt_rd(dev, tn, dev->tnode_size) ==
+ dev->tnode_size);
+ else
ok = 0;
if (tn && ok)
ok = yaffs_add_find_tnode_0(dev,
- fileStructPtr,
- baseChunk,
- tn) ? 1 : 0;
+ file_stuct_ptr,
+ base_chunk, tn) ? 1 : 0;
if (ok)
- ok = (yaffs2_checkpt_rd(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk));
-
+ ok = (yaffs2_checkpt_rd
+ (dev, &base_chunk,
+ sizeof(base_chunk)) == sizeof(base_chunk));
}
- T(YAFFS_TRACE_CHECKPOINT, (
- TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR),
- nread, baseChunk, ok));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "Checkpoint read tnodes %d records, last %d. ok %d",
+ nread, base_chunk, ok);
return ok ? 1 : 0;
}
-
-static int yaffs2_wr_checkpt_objs(yaffs_dev_t *dev)
+static int yaffs2_wr_checkpt_objs(struct yaffs_dev *dev)
{
- yaffs_obj_t *obj;
- yaffs_checkpt_obj_t cp;
+ struct yaffs_obj *obj;
+ struct yaffs_checkpt_obj cp;
int i;
int ok = 1;
- struct ylist_head *lh;
-
+ struct list_head *lh;
/* Iterate through the objects in each hash entry,
* dumping them to the checkpointing stream.
*/
- for (i = 0; ok && i < YAFFS_NOBJECT_BUCKETS; i++) {
- ylist_for_each(lh, &dev->obj_bucket[i].list) {
- if (lh) {
- obj = ylist_entry(lh, yaffs_obj_t, hash_link);
- if (!obj->defered_free) {
- yaffs2_obj_checkpt_obj(&cp, obj);
- cp.struct_type = sizeof(cp);
-
- T(YAFFS_TRACE_CHECKPOINT, (
- TSTR("Checkpoint write object %d parent %d type %d chunk %d obj addr %p" TENDSTR),
- cp.obj_id, cp.parent_id, cp.variant_type, cp.hdr_chunk, obj));
-
- ok = (yaffs2_checkpt_wr(dev, &cp, sizeof(cp)) == sizeof(cp));
-
- if (ok && obj->variant_type == YAFFS_OBJECT_TYPE_FILE)
- ok = yaffs2_wr_checkpt_tnodes(obj);
- }
+ for (i = 0; ok && i < YAFFS_NOBJECT_BUCKETS; i++) {
+ list_for_each(lh, &dev->obj_bucket[i].list) {
+ obj = list_entry(lh, struct yaffs_obj, hash_link);
+ if (!obj->defered_free) {
+ yaffs2_obj_checkpt_obj(&cp, obj);
+ cp.struct_type = sizeof(cp);
+
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "Checkpoint write object %d parent %d type %d chunk %d obj addr %p",
+ cp.obj_id, cp.parent_id,
+ cp.variant_type, cp.hdr_chunk, obj);
+
+ ok = (yaffs2_checkpt_wr(dev, &cp,
+ sizeof(cp)) == sizeof(cp));
+
+ if (ok &&
+ obj->variant_type ==
+ YAFFS_OBJECT_TYPE_FILE)
+ ok = yaffs2_wr_checkpt_tnodes(obj);
}
}
}
/* Dump end of list */
- memset(&cp, 0xFF, sizeof(yaffs_checkpt_obj_t));
+ memset(&cp, 0xff, sizeof(struct yaffs_checkpt_obj));
cp.struct_type = sizeof(cp);
if (ok)
@@ -584,59 +583,67 @@ static int yaffs2_wr_checkpt_objs(yaffs_dev_t *dev)
return ok ? 1 : 0;
}
-static int yaffs2_rd_checkpt_objs(yaffs_dev_t *dev)
+static int yaffs2_rd_checkpt_objs(struct yaffs_dev *dev)
{
- yaffs_obj_t *obj;
- yaffs_checkpt_obj_t cp;
+ struct yaffs_obj *obj;
+ struct yaffs_checkpt_obj cp;
int ok = 1;
int done = 0;
- yaffs_obj_t *hard_list = NULL;
+ LIST_HEAD(hard_list);
+
while (ok && !done) {
ok = (yaffs2_checkpt_rd(dev, &cp, sizeof(cp)) == sizeof(cp));
if (cp.struct_type != sizeof(cp)) {
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("struct size %d instead of %d ok %d"TENDSTR),
- cp.struct_type, (int)sizeof(cp), ok));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "struct size %d instead of %d ok %d",
+ cp.struct_type, (int)sizeof(cp), ok);
ok = 0;
}
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR),
- cp.obj_id, cp.parent_id, cp.variant_type, cp.hdr_chunk));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "Checkpoint read object %d parent %d type %d chunk %d ",
+ cp.obj_id, cp.parent_id, cp.variant_type,
+ cp.hdr_chunk);
- if (ok && cp.obj_id == ~0)
+ if (ok && cp.obj_id == ~0) {
done = 1;
- else if (ok) {
- obj = yaffs_find_or_create_by_number(dev, cp.obj_id, cp.variant_type);
+ } else if (ok) {
+ obj =
+ yaffs_find_or_create_by_number(dev, cp.obj_id,
+ cp.variant_type);
if (obj) {
- ok = taffs2_checkpt_obj_to_obj(obj, &cp);
+ ok = yaffs2_checkpt_obj_to_obj(obj, &cp);
if (!ok)
break;
- if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) {
+ if (obj->variant_type ==
+ YAFFS_OBJECT_TYPE_FILE) {
ok = yaffs2_rd_checkpt_tnodes(obj);
- } else if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) {
- obj->hard_links.next =
- (struct ylist_head *) hard_list;
- hard_list = obj;
+ } else if (obj->variant_type ==
+ YAFFS_OBJECT_TYPE_HARDLINK) {
+ list_add(&obj->hard_links, &hard_list);
}
- } else
+ } else {
ok = 0;
+ }
}
}
if (ok)
- yaffs_link_fixup(dev, hard_list);
+ yaffs_link_fixup(dev, &hard_list);
return ok ? 1 : 0;
}
-static int yaffs2_wr_checkpt_sum(yaffs_dev_t *dev)
+static int yaffs2_wr_checkpt_sum(struct yaffs_dev *dev)
{
- __u32 checkpt_sum;
+ u32 checkpt_sum;
int ok;
yaffs2_get_checkpt_sum(dev, &checkpt_sum);
- ok = (yaffs2_checkpt_wr(dev, &checkpt_sum, sizeof(checkpt_sum)) == sizeof(checkpt_sum));
+ ok = (yaffs2_checkpt_wr(dev, &checkpt_sum, sizeof(checkpt_sum)) ==
+ sizeof(checkpt_sum));
if (!ok)
return 0;
@@ -644,15 +651,16 @@ static int yaffs2_wr_checkpt_sum(yaffs_dev_t *dev)
return 1;
}
-static int yaffs2_rd_checkpt_sum(yaffs_dev_t *dev)
+static int yaffs2_rd_checkpt_sum(struct yaffs_dev *dev)
{
- __u32 checkpt_sum0;
- __u32 checkpt_sum1;
+ u32 checkpt_sum0;
+ u32 checkpt_sum1;
int ok;
yaffs2_get_checkpt_sum(dev, &checkpt_sum0);
- ok = (yaffs2_checkpt_rd(dev, &checkpt_sum1, sizeof(checkpt_sum1)) == sizeof(checkpt_sum1));
+ ok = (yaffs2_checkpt_rd(dev, &checkpt_sum1, sizeof(checkpt_sum1)) ==
+ sizeof(checkpt_sum1));
if (!ok)
return 0;
@@ -663,13 +671,13 @@ static int yaffs2_rd_checkpt_sum(yaffs_dev_t *dev)
return 1;
}
-
-static int yaffs2_wr_checkpt_data(yaffs_dev_t *dev)
+static int yaffs2_wr_checkpt_data(struct yaffs_dev *dev)
{
int ok = 1;
if (!yaffs2_checkpt_required(dev)) {
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint write" TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "skipping checkpoint write");
ok = 0;
}
@@ -677,19 +685,23 @@ static int yaffs2_wr_checkpt_data(yaffs_dev_t *dev)
ok = yaffs2_checkpt_open(dev, 1);
if (ok) {
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "write checkpoint validity");
ok = yaffs2_wr_checkpt_validity_marker(dev, 1);
}
if (ok) {
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint device" TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "write checkpoint device");
ok = yaffs2_wr_checkpt_dev(dev);
}
if (ok) {
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint objects" TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "write checkpoint objects");
ok = yaffs2_wr_checkpt_objs(dev);
}
if (ok) {
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "write checkpoint validity");
ok = yaffs2_wr_checkpt_validity_marker(dev, 0);
}
@@ -707,15 +719,16 @@ static int yaffs2_wr_checkpt_data(yaffs_dev_t *dev)
return dev->is_checkpointed;
}
-static int yaffs2_rd_checkpt_data(yaffs_dev_t *dev)
+static int yaffs2_rd_checkpt_data(struct yaffs_dev *dev)
{
int ok = 1;
-
- if(!dev->param.is_yaffs2)
+
+ if (!dev->param.is_yaffs2)
ok = 0;
if (ok && dev->param.skip_checkpt_rd) {
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint read" TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "skipping checkpoint read");
ok = 0;
}
@@ -723,25 +736,30 @@ static int yaffs2_rd_checkpt_data(yaffs_dev_t *dev)
ok = yaffs2_checkpt_open(dev, 0); /* open for read */
if (ok) {
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR)));
- ok = yaffs2_rd_checkpt_validty_marker(dev, 1);
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "read checkpoint validity");
+ ok = yaffs2_rd_checkpt_validity_marker(dev, 1);
}
if (ok) {
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint device" TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "read checkpoint device");
ok = yaffs2_rd_checkpt_dev(dev);
}
if (ok) {
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint objects" TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "read checkpoint objects");
ok = yaffs2_rd_checkpt_objs(dev);
}
if (ok) {
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR)));
- ok = yaffs2_rd_checkpt_validty_marker(dev, 0);
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "read checkpoint validity");
+ ok = yaffs2_rd_checkpt_validity_marker(dev, 0);
}
if (ok) {
ok = yaffs2_rd_checkpt_sum(dev);
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint checksum %d" TENDSTR), ok));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "read checkpoint checksum %d", ok);
}
if (!yaffs_checkpt_close(dev))
@@ -753,13 +771,11 @@ static int yaffs2_rd_checkpt_data(yaffs_dev_t *dev)
dev->is_checkpointed = 0;
return ok ? 1 : 0;
-
}
-void yaffs2_checkpt_invalidate(yaffs_dev_t *dev)
+void yaffs2_checkpt_invalidate(struct yaffs_dev *dev)
{
- if (dev->is_checkpointed ||
- dev->blocks_in_checkpt > 0) {
+ if (dev->is_checkpointed || dev->blocks_in_checkpt > 0) {
dev->is_checkpointed = 0;
yaffs2_checkpt_invalidate_stream(dev);
}
@@ -767,11 +783,11 @@ void yaffs2_checkpt_invalidate(yaffs_dev_t *dev)
dev->param.sb_dirty_fn(dev);
}
-
-int yaffs_checkpoint_save(yaffs_dev_t *dev)
+int yaffs_checkpoint_save(struct yaffs_dev *dev)
{
-
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("save entry: is_checkpointed %d"TENDSTR), dev->is_checkpointed));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "save entry: is_checkpointed %d",
+ dev->is_checkpointed);
yaffs_verify_objects(dev);
yaffs_verify_blocks(dev);
@@ -782,15 +798,20 @@ int yaffs_checkpoint_save(yaffs_dev_t *dev)
yaffs2_wr_checkpt_data(dev);
}
- T(YAFFS_TRACE_ALWAYS, (TSTR("save exit: is_checkpointed %d"TENDSTR), dev->is_checkpointed));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT | YAFFS_TRACE_MOUNT,
+ "save exit: is_checkpointed %d",
+ dev->is_checkpointed);
return dev->is_checkpointed;
}
-int yaffs2_checkpt_restore(yaffs_dev_t *dev)
+int yaffs2_checkpt_restore(struct yaffs_dev *dev)
{
int retval;
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore entry: is_checkpointed %d"TENDSTR), dev->is_checkpointed));
+
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "restore entry: is_checkpointed %d",
+ dev->is_checkpointed);
retval = yaffs2_rd_checkpt_data(dev);
@@ -800,177 +821,576 @@ int yaffs2_checkpt_restore(yaffs_dev_t *dev)
yaffs_verify_free_chunks(dev);
}
- T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore exit: is_checkpointed %d"TENDSTR), dev->is_checkpointed));
+ yaffs_trace(YAFFS_TRACE_CHECKPOINT,
+ "restore exit: is_checkpointed %d",
+ dev->is_checkpointed);
return retval;
}
-int yaffs2_handle_hole(yaffs_obj_t *obj, loff_t new_size)
+int yaffs2_handle_hole(struct yaffs_obj *obj, loff_t new_size)
{
- /* if newsSize > oldFileSize.
+ /* if new_size > old_file_size.
* We're going to be writing a hole.
- * If the hole is small then write zeros otherwise write a start of hole marker.
+ * If the hole is small then write zeros otherwise write a start
+ * of hole marker.
*/
-
-
- loff_t oldFileSize;
- int increase;
- int smallHole ;
+ loff_t old_file_size;
+ loff_t increase;
+ int small_hole;
int result = YAFFS_OK;
- yaffs_dev_t *dev = NULL;
+ struct yaffs_dev *dev = NULL;
+ u8 *local_buffer = NULL;
+ int small_increase_ok = 0;
- __u8 *localBuffer = NULL;
-
- int smallIncreaseOk = 0;
-
- if(!obj)
+ if (!obj)
return YAFFS_FAIL;
- if(obj->variant_type != YAFFS_OBJECT_TYPE_FILE)
+ if (obj->variant_type != YAFFS_OBJECT_TYPE_FILE)
return YAFFS_FAIL;
-
+
dev = obj->my_dev;
-
+
/* Bail out if not yaffs2 mode */
- if(!dev->param.is_yaffs2)
+ if (!dev->param.is_yaffs2)
return YAFFS_OK;
- oldFileSize = obj->variant.file_variant.file_size;
+ old_file_size = obj->variant.file_variant.file_size;
- if (new_size <= oldFileSize)
+ if (new_size <= old_file_size)
return YAFFS_OK;
- increase = new_size - oldFileSize;
+ increase = new_size - old_file_size;
- if(increase < YAFFS_SMALL_HOLE_THRESHOLD * dev->data_bytes_per_chunk &&
- yaffs_check_alloc_available(dev, YAFFS_SMALL_HOLE_THRESHOLD + 1))
- smallHole = 1;
+ if (increase < YAFFS_SMALL_HOLE_THRESHOLD * dev->data_bytes_per_chunk &&
+ yaffs_check_alloc_available(dev, YAFFS_SMALL_HOLE_THRESHOLD + 1))
+ small_hole = 1;
else
- smallHole = 0;
+ small_hole = 0;
- if(smallHole)
- localBuffer= yaffs_get_temp_buffer(dev, __LINE__);
-
- if(localBuffer){
+ if (small_hole)
+ local_buffer = yaffs_get_temp_buffer(dev);
+
+ if (local_buffer) {
/* fill hole with zero bytes */
- int pos = oldFileSize;
- int thisWrite;
+ loff_t pos = old_file_size;
+ int this_write;
int written;
- memset(localBuffer,0,dev->data_bytes_per_chunk);
- smallIncreaseOk = 1;
-
- while(increase > 0 && smallIncreaseOk){
- thisWrite = increase;
- if(thisWrite > dev->data_bytes_per_chunk)
- thisWrite = dev->data_bytes_per_chunk;
- written = yaffs_do_file_wr(obj,localBuffer,pos,thisWrite,0);
- if(written == thisWrite){
- pos += thisWrite;
- increase -= thisWrite;
- } else
- smallIncreaseOk = 0;
+ memset(local_buffer, 0, dev->data_bytes_per_chunk);
+ small_increase_ok = 1;
+
+ while (increase > 0 && small_increase_ok) {
+ this_write = increase;
+ if (this_write > dev->data_bytes_per_chunk)
+ this_write = dev->data_bytes_per_chunk;
+ written =
+ yaffs_do_file_wr(obj, local_buffer, pos, this_write,
+ 0);
+ if (written == this_write) {
+ pos += this_write;
+ increase -= this_write;
+ } else {
+ small_increase_ok = 0;
+ }
}
- yaffs_release_temp_buffer(dev,localBuffer,__LINE__);
+ yaffs_release_temp_buffer(dev, local_buffer);
- /* If we were out of space then reverse any chunks we've added */
- if(!smallIncreaseOk)
- yaffs_resize_file_down(obj, oldFileSize);
+ /* If out of space then reverse any chunks we've added */
+ if (!small_increase_ok)
+ yaffs_resize_file_down(obj, old_file_size);
}
-
- if (!smallIncreaseOk &&
- obj->parent &&
- obj->parent->obj_id != YAFFS_OBJECTID_UNLINKED &&
- obj->parent->obj_id != YAFFS_OBJECTID_DELETED){
+
+ if (!small_increase_ok &&
+ obj->parent &&
+ obj->parent->obj_id != YAFFS_OBJECTID_UNLINKED &&
+ obj->parent->obj_id != YAFFS_OBJECTID_DELETED) {
/* Write a hole start header with the old file size */
yaffs_update_oh(obj, NULL, 0, 1, 0, NULL);
}
return result;
-
}
-
-typedef struct {
+struct yaffs_block_index {
int seq;
int block;
-} yaffs_BlockIndex;
-
+};
static int yaffs2_ybicmp(const void *a, const void *b)
{
- register int aseq = ((yaffs_BlockIndex *)a)->seq;
- register int bseq = ((yaffs_BlockIndex *)b)->seq;
- register int ablock = ((yaffs_BlockIndex *)a)->block;
- register int bblock = ((yaffs_BlockIndex *)b)->block;
+ int aseq = ((struct yaffs_block_index *)a)->seq;
+ int bseq = ((struct yaffs_block_index *)b)->seq;
+ int ablock = ((struct yaffs_block_index *)a)->block;
+ int bblock = ((struct yaffs_block_index *)b)->block;
+
if (aseq == bseq)
return ablock - bblock;
- else
- return aseq - bseq;
+
+ return aseq - bseq;
}
-int yaffs2_scan_backwards(yaffs_dev_t *dev)
+static inline int yaffs2_scan_chunk(struct yaffs_dev *dev,
+ struct yaffs_block_info *bi,
+ int blk, int chunk_in_block,
+ int *found_chunks,
+ u8 *chunk_data,
+ struct list_head *hard_list,
+ int summary_available)
{
- yaffs_ext_tags tags;
- int blk;
- int blockIterator;
- int startIterator;
- int endIterator;
- int nBlocksToScan = 0;
-
- int chunk;
- int result;
- int c;
- int deleted;
- yaffs_block_state_t state;
- yaffs_obj_t *hard_list = NULL;
- yaffs_block_info_t *bi;
- __u32 seq_number;
- yaffs_obj_header *oh;
- yaffs_obj_t *in;
- yaffs_obj_t *parent;
- int nBlocks = dev->internal_end_block - dev->internal_start_block + 1;
- int itsUnlinked;
- __u8 *chunkData;
-
- int file_size;
- int is_shrink;
- int foundChunksInBlock;
+ struct yaffs_obj_hdr *oh;
+ struct yaffs_obj *in;
+ struct yaffs_obj *parent;
int equiv_id;
+ loff_t file_size;
+ int is_shrink;
+ int is_unlinked;
+ struct yaffs_ext_tags tags;
+ int result;
int alloc_failed = 0;
+ int chunk = blk * dev->param.chunks_per_block + chunk_in_block;
+ struct yaffs_file_var *file_var;
+ struct yaffs_hardlink_var *hl_var;
+ struct yaffs_symlink_var *sl_var;
+
+ if (summary_available) {
+ result = yaffs_summary_fetch(dev, &tags, chunk_in_block);
+ tags.seq_number = bi->seq_number;
+ }
+
+ if (!summary_available || tags.obj_id == 0) {
+ result = yaffs_rd_chunk_tags_nand(dev, chunk, NULL, &tags);
+ dev->tags_used++;
+ } else {
+ dev->summary_used++;
+ }
+
+ /* Let's have a good look at this chunk... */
+
+ if (!tags.chunk_used) {
+ /* An unassigned chunk in the block.
+ * If there are used chunks after this one, then
+ * it is a chunk that was skipped due to failing
+ * the erased check. Just skip it so that it can
+ * be deleted.
+ * But, more typically, We get here when this is
+ * an unallocated chunk and his means that
+ * either the block is empty or this is the one
+ * being allocated from
+ */
+
+ if (*found_chunks) {
+ /* This is a chunk that was skipped due
+ * to failing the erased check */
+ } else if (chunk_in_block == 0) {
+ /* We're looking at the first chunk in
+ * the block so the block is unused */
+ bi->block_state = YAFFS_BLOCK_STATE_EMPTY;
+ dev->n_erased_blocks++;
+ } else {
+ if (bi->block_state == YAFFS_BLOCK_STATE_NEEDS_SCAN ||
+ bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING) {
+ if (dev->seq_number == bi->seq_number) {
+ /* Allocating from this block*/
+ yaffs_trace(YAFFS_TRACE_SCAN,
+ " Allocating from %d %d",
+ blk, chunk_in_block);
+
+ bi->block_state =
+ YAFFS_BLOCK_STATE_ALLOCATING;
+ dev->alloc_block = blk;
+ dev->alloc_page = chunk_in_block;
+ dev->alloc_block_finder = blk;
+ } else {
+ /* This is a partially written block
+ * that is not the current
+ * allocation block.
+ */
+ yaffs_trace(YAFFS_TRACE_SCAN,
+ "Partially written block %d detected. gc will fix this.",
+ blk);
+ }
+ }
+ }
+
+ dev->n_free_chunks++;
+
+ } else if (tags.ecc_result ==
+ YAFFS_ECC_RESULT_UNFIXED) {
+ yaffs_trace(YAFFS_TRACE_SCAN,
+ " Unfixed ECC in chunk(%d:%d), chunk ignored",
+ blk, chunk_in_block);
+ dev->n_free_chunks++;
+ } else if (tags.obj_id > YAFFS_MAX_OBJECT_ID ||
+ tags.chunk_id > YAFFS_MAX_CHUNK_ID ||
+ tags.obj_id == YAFFS_OBJECTID_SUMMARY ||
+ (tags.chunk_id > 0 &&
+ tags.n_bytes > dev->data_bytes_per_chunk) ||
+ tags.seq_number != bi->seq_number) {
+ yaffs_trace(YAFFS_TRACE_SCAN,
+ "Chunk (%d:%d) with bad tags:obj = %d, chunk_id = %d, n_bytes = %d, ignored",
+ blk, chunk_in_block, tags.obj_id,
+ tags.chunk_id, tags.n_bytes);
+ dev->n_free_chunks++;
+ } else if (tags.chunk_id > 0) {
+ /* chunk_id > 0 so it is a data chunk... */
+ loff_t endpos;
+ loff_t chunk_base = (tags.chunk_id - 1) *
+ dev->data_bytes_per_chunk;
+
+ *found_chunks = 1;
+
+ yaffs_set_chunk_bit(dev, blk, chunk_in_block);
+ bi->pages_in_use++;
+
+ in = yaffs_find_or_create_by_number(dev,
+ tags.obj_id,
+ YAFFS_OBJECT_TYPE_FILE);
+ if (!in)
+ /* Out of memory */
+ alloc_failed = 1;
+
+ if (in &&
+ in->variant_type == YAFFS_OBJECT_TYPE_FILE &&
+ chunk_base < in->variant.file_variant.shrink_size) {
+ /* This has not been invalidated by
+ * a resize */
+ if (!yaffs_put_chunk_in_file(in, tags.chunk_id,
+ chunk, -1))
+ alloc_failed = 1;
+
+ /* File size is calculated by looking at
+ * the data chunks if we have not
+ * seen an object header yet.
+ * Stop this practice once we find an
+ * object header.
+ */
+ endpos = chunk_base + tags.n_bytes;
+
+ if (!in->valid &&
+ in->variant.file_variant.scanned_size < endpos) {
+ in->variant.file_variant.
+ scanned_size = endpos;
+ in->variant.file_variant.
+ file_size = endpos;
+ }
+ } else if (in) {
+ /* This chunk has been invalidated by a
+ * resize, or a past file deletion
+ * so delete the chunk*/
+ yaffs_chunk_del(dev, chunk, 1, __LINE__);
+ }
+ } else {
+ /* chunk_id == 0, so it is an ObjectHeader.
+ * Thus, we read in the object header and make
+ * the object
+ */
+ *found_chunks = 1;
+
+ yaffs_set_chunk_bit(dev, blk, chunk_in_block);
+ bi->pages_in_use++;
+
+ oh = NULL;
+ in = NULL;
+
+ if (tags.extra_available) {
+ in = yaffs_find_or_create_by_number(dev,
+ tags.obj_id,
+ tags.extra_obj_type);
+ if (!in)
+ alloc_failed = 1;
+ }
+
+ if (!in ||
+ (!in->valid && dev->param.disable_lazy_load) ||
+ tags.extra_shadows ||
+ (!in->valid && (tags.obj_id == YAFFS_OBJECTID_ROOT ||
+ tags.obj_id == YAFFS_OBJECTID_LOSTNFOUND))) {
+
+ /* If we don't have valid info then we
+ * need to read the chunk
+ * TODO In future we can probably defer
+ * reading the chunk and living with
+ * invalid data until needed.
+ */
+
+ result = yaffs_rd_chunk_tags_nand(dev,
+ chunk,
+ chunk_data,
+ NULL);
+
+ oh = (struct yaffs_obj_hdr *)chunk_data;
+
+ if (dev->param.inband_tags) {
+ /* Fix up the header if they got
+ * corrupted by inband tags */
+ oh->shadows_obj =
+ oh->inband_shadowed_obj_id;
+ oh->is_shrink =
+ oh->inband_is_shrink;
+ }
+
+ if (!in) {
+ in = yaffs_find_or_create_by_number(dev,
+ tags.obj_id, oh->type);
+ if (!in)
+ alloc_failed = 1;
+ }
+ }
+
+ if (!in) {
+ /* TODO Hoosterman we have a problem! */
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "yaffs tragedy: Could not make object for object %d at chunk %d during scan",
+ tags.obj_id, chunk);
+ return YAFFS_FAIL;
+ }
+ if (in->valid) {
+ /* We have already filled this one.
+ * We have a duplicate that will be
+ * discarded, but we first have to suck
+ * out resize info if it is a file.
+ */
+ if ((in->variant_type == YAFFS_OBJECT_TYPE_FILE) &&
+ ((oh && oh->type == YAFFS_OBJECT_TYPE_FILE) ||
+ (tags.extra_available &&
+ tags.extra_obj_type == YAFFS_OBJECT_TYPE_FILE)
+ )) {
+ loff_t this_size = (oh) ?
+ yaffs_oh_to_size(oh) :
+ tags.extra_file_size;
+ u32 parent_obj_id = (oh) ?
+ oh->parent_obj_id :
+ tags.extra_parent_id;
+
+ is_shrink = (oh) ?
+ oh->is_shrink :
+ tags.extra_is_shrink;
+
+ /* If it is deleted (unlinked
+ * at start also means deleted)
+ * we treat the file size as
+ * being zeroed at this point.
+ */
+ if (parent_obj_id == YAFFS_OBJECTID_DELETED ||
+ parent_obj_id == YAFFS_OBJECTID_UNLINKED) {
+ this_size = 0;
+ is_shrink = 1;
+ }
+
+ if (is_shrink &&
+ in->variant.file_variant.shrink_size >
+ this_size)
+ in->variant.file_variant.shrink_size =
+ this_size;
+
+ if (is_shrink)
+ bi->has_shrink_hdr = 1;
+ }
+ /* Use existing - destroy this one. */
+ yaffs_chunk_del(dev, chunk, 1, __LINE__);
+ }
+
+ if (!in->valid && in->variant_type !=
+ (oh ? oh->type : tags.extra_obj_type))
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "yaffs tragedy: Bad object type, %d != %d, for object %d at chunk %d during scan",
+ oh ? oh->type : tags.extra_obj_type,
+ in->variant_type, tags.obj_id,
+ chunk);
+
+ if (!in->valid &&
+ (tags.obj_id == YAFFS_OBJECTID_ROOT ||
+ tags.obj_id == YAFFS_OBJECTID_LOSTNFOUND)) {
+ /* We only load some info, don't fiddle
+ * with directory structure */
+ in->valid = 1;
+
+ if (oh) {
+ in->yst_mode = oh->yst_mode;
+ yaffs_load_attribs(in, oh);
+ in->lazy_loaded = 0;
+ } else {
+ in->lazy_loaded = 1;
+ }
+ in->hdr_chunk = chunk;
+
+ } else if (!in->valid) {
+ /* we need to load this info */
+ in->valid = 1;
+ in->hdr_chunk = chunk;
+ if (oh) {
+ in->variant_type = oh->type;
+ in->yst_mode = oh->yst_mode;
+ yaffs_load_attribs(in, oh);
+
+ if (oh->shadows_obj > 0)
+ yaffs_handle_shadowed_obj(dev,
+ oh->shadows_obj, 1);
+
+ yaffs_set_obj_name_from_oh(in, oh);
+ parent = yaffs_find_or_create_by_number(dev,
+ oh->parent_obj_id,
+ YAFFS_OBJECT_TYPE_DIRECTORY);
+ file_size = yaffs_oh_to_size(oh);
+ is_shrink = oh->is_shrink;
+ equiv_id = oh->equiv_id;
+ } else {
+ in->variant_type = tags.extra_obj_type;
+ parent = yaffs_find_or_create_by_number(dev,
+ tags.extra_parent_id,
+ YAFFS_OBJECT_TYPE_DIRECTORY);
+ file_size = tags.extra_file_size;
+ is_shrink = tags.extra_is_shrink;
+ equiv_id = tags.extra_equiv_id;
+ in->lazy_loaded = 1;
+ }
+ in->dirty = 0;
- yaffs_BlockIndex *blockIndex = NULL;
- int altBlockIndex = 0;
+ if (!parent)
+ alloc_failed = 1;
+
+ /* directory stuff...
+ * hook up to parent
+ */
+
+ if (parent &&
+ parent->variant_type == YAFFS_OBJECT_TYPE_UNKNOWN) {
+ /* Set up as a directory */
+ parent->variant_type =
+ YAFFS_OBJECT_TYPE_DIRECTORY;
+ INIT_LIST_HEAD(&parent->
+ variant.dir_variant.children);
+ } else if (!parent ||
+ parent->variant_type !=
+ YAFFS_OBJECT_TYPE_DIRECTORY) {
+ /* Hoosterman, another problem....
+ * Trying to use a non-directory as a directory
+ */
+
+ yaffs_trace(YAFFS_TRACE_ERROR,
+ "yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found."
+ );
+ parent = dev->lost_n_found;
+ }
+ yaffs_add_obj_to_dir(parent, in);
+
+ is_unlinked = (parent == dev->del_dir) ||
+ (parent == dev->unlinked_dir);
+
+ if (is_shrink)
+ /* Mark the block */
+ bi->has_shrink_hdr = 1;
+
+ /* Note re hardlinks.
+ * Since we might scan a hardlink before its equivalent
+ * object is scanned we put them all in a list.
+ * After scanning is complete, we should have all the
+ * objects, so we run through this list and fix up all
+ * the chains.
+ */
+
+ switch (in->variant_type) {
+ case YAFFS_OBJECT_TYPE_UNKNOWN:
+ /* Todo got a problem */
+ break;
+ case YAFFS_OBJECT_TYPE_FILE:
+ file_var = &in->variant.file_variant;
+ if (file_var->scanned_size < file_size) {
+ /* This covers the case where the file
+ * size is greater than the data held.
+ * This will happen if the file is
+ * resized to be larger than its
+ * current data extents.
+ */
+ file_var->file_size = file_size;
+ file_var->scanned_size = file_size;
+ }
+
+ if (file_var->shrink_size > file_size)
+ file_var->shrink_size = file_size;
+
+ break;
+ case YAFFS_OBJECT_TYPE_HARDLINK:
+ hl_var = &in->variant.hardlink_variant;
+ if (!is_unlinked) {
+ hl_var->equiv_id = equiv_id;
+ list_add(&in->hard_links, hard_list);
+ }
+ break;
+ case YAFFS_OBJECT_TYPE_DIRECTORY:
+ /* Do nothing */
+ break;
+ case YAFFS_OBJECT_TYPE_SPECIAL:
+ /* Do nothing */
+ break;
+ case YAFFS_OBJECT_TYPE_SYMLINK:
+ sl_var = &in->variant.symlink_variant;
+ if (oh) {
+ sl_var->alias =
+ yaffs_clone_str(oh->alias);
+ if (!sl_var->alias)
+ alloc_failed = 1;
+ }
+ break;
+ }
+ }
+ }
+ return alloc_failed ? YAFFS_FAIL : YAFFS_OK;
+}
- T(YAFFS_TRACE_SCAN,
- (TSTR
- ("yaffs2_scan_backwards starts intstartblk %d intendblk %d..."
- TENDSTR), dev->internal_start_block, dev->internal_end_block));
+int yaffs2_scan_backwards(struct yaffs_dev *dev)
+{
+ int blk;
+ int block_iter;
+ int start_iter;
+ int end_iter;
+ int n_to_scan = 0;
+ enum yaffs_block_state state;
+ int c;
+ int deleted;
+ LIST_HEAD(hard_list);
+ struct yaffs_block_info *bi;
+ u32 seq_number;
+ int n_blocks = dev->internal_end_block - dev->internal_start_block + 1;
+ u8 *chunk_data;
+ int found_chunks;
+ int alloc_failed = 0;
+ struct yaffs_block_index *block_index = NULL;
+ int alt_block_index = 0;
+ int summary_available;
+ yaffs_trace(YAFFS_TRACE_SCAN,
+ "yaffs2_scan_backwards starts intstartblk %d intendblk %d...",
+ dev->internal_start_block, dev->internal_end_block);
dev->seq_number = YAFFS_LOWEST_SEQUENCE_NUMBER;
- blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex));
+ block_index =
+ kmalloc(n_blocks * sizeof(struct yaffs_block_index), GFP_NOFS);
- if (!blockIndex) {
- blockIndex = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockIndex));
- altBlockIndex = 1;
+ if (!block_index) {
+ block_index =
+ vmalloc(n_blocks * sizeof(struct yaffs_block_index));
+ alt_block_index = 1;
}
- if (!blockIndex) {
- T(YAFFS_TRACE_SCAN,
- (TSTR("yaffs2_scan_backwards() could not allocate block index!" TENDSTR)));
+ if (!block_index) {
+ yaffs_trace(YAFFS_TRACE_SCAN,
+ "yaffs2_scan_backwards() could not allocate block index!"
+ );
return YAFFS_FAIL;
}
dev->blocks_in_checkpt = 0;
- chunkData = yaffs_get_temp_buffer(dev, __LINE__);
+ chunk_data = yaffs_get_temp_buffer(dev);
/* Scan all the blocks to determine their state */
bi = dev->block_info;
- for (blk = dev->internal_start_block; blk <= dev->internal_end_block; blk++) {
+ for (blk = dev->internal_start_block; blk <= dev->internal_end_block;
+ blk++) {
yaffs_clear_chunk_bits(dev, blk);
bi->pages_in_use = 0;
bi->soft_del_pages = 0;
@@ -981,529 +1401,103 @@ int yaffs2_scan_backwards(yaffs_dev_t *dev)
bi->seq_number = seq_number;
if (bi->seq_number == YAFFS_SEQUENCE_CHECKPOINT_DATA)
- bi->block_state = state = YAFFS_BLOCK_STATE_CHECKPOINT;
+ bi->block_state = YAFFS_BLOCK_STATE_CHECKPOINT;
if (bi->seq_number == YAFFS_SEQUENCE_BAD_BLOCK)
- bi->block_state = state = YAFFS_BLOCK_STATE_DEAD;
+ bi->block_state = YAFFS_BLOCK_STATE_DEAD;
- T(YAFFS_TRACE_SCAN_DEBUG,
- (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk,
- state, seq_number));
+ yaffs_trace(YAFFS_TRACE_SCAN_DEBUG,
+ "Block scanning block %d state %d seq %d",
+ blk, bi->block_state, seq_number);
-
- if (state == YAFFS_BLOCK_STATE_CHECKPOINT) {
+ if (bi->block_state == YAFFS_BLOCK_STATE_CHECKPOINT) {
dev->blocks_in_checkpt++;
- } else if (state == YAFFS_BLOCK_STATE_DEAD) {
- T(YAFFS_TRACE_BAD_BLOCKS,
- (TSTR("block %d is bad" TENDSTR), blk));
- } else if (state == YAFFS_BLOCK_STATE_EMPTY) {
- T(YAFFS_TRACE_SCAN_DEBUG,
- (TSTR("Block empty " TENDSTR)));
+ } else if (bi->block_state == YAFFS_BLOCK_STATE_DEAD) {
+ yaffs_trace(YAFFS_TRACE_BAD_BLOCKS,
+ "block %d is bad", blk);
+ } else if (bi->block_state == YAFFS_BLOCK_STATE_EMPTY) {
+ yaffs_trace(YAFFS_TRACE_SCAN_DEBUG, "Block empty ");
dev->n_erased_blocks++;
dev->n_free_chunks += dev->param.chunks_per_block;
- } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
-
+ } else if (bi->block_state ==
+ YAFFS_BLOCK_STATE_NEEDS_SCAN) {
/* Determine the highest sequence number */
if (seq_number >= YAFFS_LOWEST_SEQUENCE_NUMBER &&
seq_number < YAFFS_HIGHEST_SEQUENCE_NUMBER) {
-
- blockIndex[nBlocksToScan].seq = seq_number;
- blockIndex[nBlocksToScan].block = blk;
-
- nBlocksToScan++;
-
+ block_index[n_to_scan].seq = seq_number;
+ block_index[n_to_scan].block = blk;
+ n_to_scan++;
if (seq_number >= dev->seq_number)
dev->seq_number = seq_number;
} else {
/* TODO: Nasty sequence number! */
- T(YAFFS_TRACE_SCAN,
- (TSTR
- ("Block scanning block %d has bad sequence number %d"
- TENDSTR), blk, seq_number));
-
+ yaffs_trace(YAFFS_TRACE_SCAN,
+ "Block scanning block %d has bad sequence number %d",
+ blk, seq_number);
}
}
bi++;
}
- T(YAFFS_TRACE_SCAN,
- (TSTR("%d blocks to be sorted..." TENDSTR), nBlocksToScan));
-
-
+ yaffs_trace(YAFFS_TRACE_SCAN, "%d blocks to be sorted...", n_to_scan);
- YYIELD();
+ cond_resched();
- /* Sort the blocks by sequence number*/
- yaffs_qsort(blockIndex, nBlocksToScan, sizeof(yaffs_BlockIndex), yaffs2_ybicmp);
+ /* Sort the blocks by sequence number */
+ sort(block_index, n_to_scan, sizeof(struct yaffs_block_index),
+ yaffs2_ybicmp, NULL);
- YYIELD();
+ cond_resched();
- T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_SCAN, "...done");
/* Now scan the blocks looking at the data. */
- startIterator = 0;
- endIterator = nBlocksToScan - 1;
- T(YAFFS_TRACE_SCAN_DEBUG,
- (TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan));
+ start_iter = 0;
+ end_iter = n_to_scan - 1;
+ yaffs_trace(YAFFS_TRACE_SCAN_DEBUG, "%d blocks to scan", n_to_scan);
/* For each block.... backwards */
- for (blockIterator = endIterator; !alloc_failed && blockIterator >= startIterator;
- blockIterator--) {
+ for (block_iter = end_iter;
+ !alloc_failed && block_iter >= start_iter;
+ block_iter--) {
/* Cooperative multitasking! This loop can run for so
long that watchdog timers expire. */
- YYIELD();
+ cond_resched();
/* get the block to scan in the correct order */
- blk = blockIndex[blockIterator].block;
-
+ blk = block_index[block_iter].block;
bi = yaffs_get_block_info(dev, blk);
-
-
- state = bi->block_state;
-
deleted = 0;
+ summary_available = yaffs_summary_read(dev, dev->sum_tags, blk);
+
/* For each chunk in each block that needs scanning.... */
- foundChunksInBlock = 0;
- for (c = dev->param.chunks_per_block - 1;
+ found_chunks = 0;
+ if (summary_available)
+ c = dev->chunks_per_summary - 1;
+ else
+ c = dev->param.chunks_per_block - 1;
+
+ for (/* c is already initialised */;
!alloc_failed && c >= 0 &&
- (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
- state == YAFFS_BLOCK_STATE_ALLOCATING); c--) {
+ (bi->block_state == YAFFS_BLOCK_STATE_NEEDS_SCAN ||
+ bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING);
+ c--) {
/* Scan backwards...
* Read the tags and decide what to do
*/
-
- chunk = blk * dev->param.chunks_per_block + c;
-
- result = yaffs_rd_chunk_tags_nand(dev, chunk, NULL,
- &tags);
-
- /* Let's have a good look at this chunk... */
-
- if (!tags.chunk_used) {
- /* An unassigned chunk in the block.
- * If there are used chunks after this one, then
- * it is a chunk that was skipped due to failing the erased
- * check. Just skip it so that it can be deleted.
- * But, more typically, We get here when this is an unallocated
- * chunk and his means that either the block is empty or
- * this is the one being allocated from
- */
-
- if (foundChunksInBlock) {
- /* This is a chunk that was skipped due to failing the erased check */
- } else if (c == 0) {
- /* We're looking at the first chunk in the block so the block is unused */
- state = YAFFS_BLOCK_STATE_EMPTY;
- dev->n_erased_blocks++;
- } else {
- if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
- state == YAFFS_BLOCK_STATE_ALLOCATING) {
- if (dev->seq_number == bi->seq_number) {
- /* this is the block being allocated from */
-
- T(YAFFS_TRACE_SCAN,
- (TSTR
- (" Allocating from %d %d"
- TENDSTR), blk, c));
-
- state = YAFFS_BLOCK_STATE_ALLOCATING;
- dev->alloc_block = blk;
- dev->alloc_page = c;
- dev->alloc_block_finder = blk;
- } else {
- /* This is a partially written block that is not
- * the current allocation block.
- */
-
- T(YAFFS_TRACE_SCAN,
- (TSTR("Partially written block %d detected" TENDSTR),
- blk));
- }
- }
- }
-
- dev->n_free_chunks++;
-
- } else if (tags.ecc_result == YAFFS_ECC_RESULT_UNFIXED) {
- T(YAFFS_TRACE_SCAN,
- (TSTR(" Unfixed ECC in chunk(%d:%d), chunk ignored"TENDSTR),
- blk, c));
-
- dev->n_free_chunks++;
-
- } else if (tags.obj_id > YAFFS_MAX_OBJECT_ID ||
- tags.chunk_id > YAFFS_MAX_CHUNK_ID ||
- (tags.chunk_id > 0 && tags.n_bytes > dev->data_bytes_per_chunk) ||
- tags.seq_number != bi->seq_number ) {
- T(YAFFS_TRACE_SCAN,
- (TSTR("Chunk (%d:%d) with bad tags:obj = %d, chunk_id = %d, n_bytes = %d, ignored"TENDSTR),
- blk, c,tags.obj_id, tags.chunk_id, tags.n_bytes));
-
- dev->n_free_chunks++;
-
- } else if (tags.chunk_id > 0) {
- /* chunk_id > 0 so it is a data chunk... */
- unsigned int endpos;
- __u32 chunkBase =
- (tags.chunk_id - 1) * dev->data_bytes_per_chunk;
-
- foundChunksInBlock = 1;
-
-
- yaffs_set_chunk_bit(dev, blk, c);
- bi->pages_in_use++;
-
- in = yaffs_find_or_create_by_number(dev,
- tags.
- obj_id,
- YAFFS_OBJECT_TYPE_FILE);
- if (!in) {
- /* Out of memory */
- alloc_failed = 1;
- }
-
- if (in &&
- in->variant_type == YAFFS_OBJECT_TYPE_FILE
- && chunkBase < in->variant.file_variant.shrink_size) {
- /* This has not been invalidated by a resize */
- if (!yaffs_put_chunk_in_file(in, tags.chunk_id, chunk, -1)) {
- alloc_failed = 1;
- }
-
- /* File size is calculated by looking at the data chunks if we have not
- * seen an object header yet. Stop this practice once we find an object header.
- */
- endpos = chunkBase + tags.n_bytes;
-
- if (!in->valid && /* have not got an object header yet */
- in->variant.file_variant.scanned_size < endpos) {
- in->variant.file_variant.scanned_size = endpos;
- in->variant.file_variant.file_size = endpos;
- }
-
- } else if (in) {
- /* This chunk has been invalidated by a resize, or a past file deletion
- * so delete the chunk*/
- yaffs_chunk_del(dev, chunk, 1, __LINE__);
-
- }
- } else {
- /* chunk_id == 0, so it is an ObjectHeader.
- * Thus, we read in the object header and make the object
- */
- foundChunksInBlock = 1;
-
- yaffs_set_chunk_bit(dev, blk, c);
- bi->pages_in_use++;
-
- oh = NULL;
- in = NULL;
-
- if (tags.extra_available) {
- in = yaffs_find_or_create_by_number(dev,
- tags.obj_id,
- tags.extra_obj_type);
- if (!in)
- alloc_failed = 1;
- }
-
- if (!in ||
- (!in->valid && dev->param.disable_lazy_load) ||
- tags.extra_shadows ||
- (!in->valid &&
- (tags.obj_id == YAFFS_OBJECTID_ROOT ||
- tags.obj_id == YAFFS_OBJECTID_LOSTNFOUND))) {
-
- /* If we don't have valid info then we need to read the chunk
- * TODO In future we can probably defer reading the chunk and
- * living with invalid data until needed.
- */
-
- result = yaffs_rd_chunk_tags_nand(dev,
- chunk,
- chunkData,
- NULL);
-
- oh = (yaffs_obj_header *) chunkData;
-
- if (dev->param.inband_tags) {
- /* Fix up the header if they got corrupted by inband tags */
- oh->shadows_obj = oh->inband_shadowed_obj_id;
- oh->is_shrink = oh->inband_is_shrink;
- }
-
- if (!in) {
- in = yaffs_find_or_create_by_number(dev, tags.obj_id, oh->type);
- if (!in)
- alloc_failed = 1;
- }
-
- }
-
- if (!in) {
- /* TODO Hoosterman we have a problem! */
- T(YAFFS_TRACE_ERROR,
- (TSTR
- ("yaffs tragedy: Could not make object for object %d at chunk %d during scan"
- TENDSTR), tags.obj_id, chunk));
- continue;
- }
-
- if (in->valid) {
- /* We have already filled this one.
- * We have a duplicate that will be discarded, but
- * we first have to suck out resize info if it is a file.
- */
-
- if ((in->variant_type == YAFFS_OBJECT_TYPE_FILE) &&
- ((oh &&
- oh->type == YAFFS_OBJECT_TYPE_FILE) ||
- (tags.extra_available &&
- tags.extra_obj_type == YAFFS_OBJECT_TYPE_FILE))) {
- __u32 thisSize =
- (oh) ? oh->file_size : tags.
- extra_length;
- __u32 parent_obj_id =
- (oh) ? oh->
- parent_obj_id : tags.
- extra_parent_id;
-
-
- is_shrink =
- (oh) ? oh->is_shrink : tags.
- extra_is_shrink;
-
- /* If it is deleted (unlinked at start also means deleted)
- * we treat the file size as being zeroed at this point.
- */
- if (parent_obj_id ==
- YAFFS_OBJECTID_DELETED
- || parent_obj_id ==
- YAFFS_OBJECTID_UNLINKED) {
- thisSize = 0;
- is_shrink = 1;
- }
-
- if (is_shrink && in->variant.file_variant.shrink_size > thisSize)
- in->variant.file_variant.shrink_size = thisSize;
-
- if (is_shrink)
- bi->has_shrink_hdr = 1;
-
- }
- /* Use existing - destroy this one. */
- yaffs_chunk_del(dev, chunk, 1, __LINE__);
-
- }
-
- if (!in->valid && in->variant_type !=
- (oh ? oh->type : tags.extra_obj_type))
- T(YAFFS_TRACE_ERROR, (
- TSTR("yaffs tragedy: Bad object type, "
- TCONT("%d != %d, for object %d at chunk ")
- TCONT("%d during scan")
- TENDSTR), oh ?
- oh->type : tags.extra_obj_type,
- in->variant_type, tags.obj_id,
- chunk));
-
- if (!in->valid &&
- (tags.obj_id == YAFFS_OBJECTID_ROOT ||
- tags.obj_id ==
- YAFFS_OBJECTID_LOSTNFOUND)) {
- /* We only load some info, don't fiddle with directory structure */
- in->valid = 1;
-
- if (oh) {
-
- in->yst_mode = oh->yst_mode;
-#ifdef CONFIG_YAFFS_WINCE
- in->win_atime[0] = oh->win_atime[0];
- in->win_ctime[0] = oh->win_ctime[0];
- in->win_mtime[0] = oh->win_mtime[0];
- in->win_atime[1] = oh->win_atime[1];
- in->win_ctime[1] = oh->win_ctime[1];
- in->win_mtime[1] = oh->win_mtime[1];
-#else
- in->yst_uid = oh->yst_uid;
- in->yst_gid = oh->yst_gid;
- in->yst_atime = oh->yst_atime;
- in->yst_mtime = oh->yst_mtime;
- in->yst_ctime = oh->yst_ctime;
- in->yst_rdev = oh->yst_rdev;
-
- in->lazy_loaded = 0;
-
-#endif
- } else
- in->lazy_loaded = 1;
-
- in->hdr_chunk = chunk;
-
- } else if (!in->valid) {
- /* we need to load this info */
-
- in->valid = 1;
- in->hdr_chunk = chunk;
-
- if (oh) {
- in->variant_type = oh->type;
-
- in->yst_mode = oh->yst_mode;
-#ifdef CONFIG_YAFFS_WINCE
- in->win_atime[0] = oh->win_atime[0];
- in->win_ctime[0] = oh->win_ctime[0];
- in->win_mtime[0] = oh->win_mtime[0];
- in->win_atime[1] = oh->win_atime[1];
- in->win_ctime[1] = oh->win_ctime[1];
- in->win_mtime[1] = oh->win_mtime[1];
-#else
- in->yst_uid = oh->yst_uid;
- in->yst_gid = oh->yst_gid;
- in->yst_atime = oh->yst_atime;
- in->yst_mtime = oh->yst_mtime;
- in->yst_ctime = oh->yst_ctime;
- in->yst_rdev = oh->yst_rdev;
-#endif
-
- if (oh->shadows_obj > 0)
- yaffs_handle_shadowed_obj(dev,
- oh->
- shadows_obj,
- 1);
-
-
-
- yaffs_set_obj_name_from_oh(in, oh);
- parent =
- yaffs_find_or_create_by_number
- (dev, oh->parent_obj_id,
- YAFFS_OBJECT_TYPE_DIRECTORY);
-
- file_size = oh->file_size;
- is_shrink = oh->is_shrink;
- equiv_id = oh->equiv_id;
-
- } else {
- in->variant_type = tags.extra_obj_type;
- parent =
- yaffs_find_or_create_by_number
- (dev, tags.extra_parent_id,
- YAFFS_OBJECT_TYPE_DIRECTORY);
- file_size = tags.extra_length;
- is_shrink = tags.extra_is_shrink;
- equiv_id = tags.extra_equiv_id;
- in->lazy_loaded = 1;
-
- }
- in->dirty = 0;
-
- if (!parent)
- alloc_failed = 1;
-
- /* directory stuff...
- * hook up to parent
- */
-
- if (parent && parent->variant_type ==
- YAFFS_OBJECT_TYPE_UNKNOWN) {
- /* Set up as a directory */
- parent->variant_type =
- YAFFS_OBJECT_TYPE_DIRECTORY;
- YINIT_LIST_HEAD(&parent->variant.
- dir_variant.
- children);
- } else if (!parent || parent->variant_type !=
- YAFFS_OBJECT_TYPE_DIRECTORY) {
- /* Hoosterman, another problem....
- * We're trying to use a non-directory as a directory
- */
-
- T(YAFFS_TRACE_ERROR,
- (TSTR
- ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found."
- TENDSTR)));
- parent = dev->lost_n_found;
- }
-
- yaffs_add_obj_to_dir(parent, in);
-
- itsUnlinked = (parent == dev->del_dir) ||
- (parent == dev->unlinked_dir);
-
- if (is_shrink) {
- /* Mark the block as having a shrinkHeader */
- bi->has_shrink_hdr = 1;
- }
-
- /* Note re hardlinks.
- * Since we might scan a hardlink before its equivalent object is scanned
- * we put them all in a list.
- * After scanning is complete, we should have all the objects, so we run
- * through this list and fix up all the chains.
- */
-
- switch (in->variant_type) {
- case YAFFS_OBJECT_TYPE_UNKNOWN:
- /* Todo got a problem */
- break;
- case YAFFS_OBJECT_TYPE_FILE:
-
- if (in->variant.file_variant.
- scanned_size < file_size) {
- /* This covers the case where the file size is greater
- * than where the data is
- * This will happen if the file is resized to be larger
- * than its current data extents.
- */
- in->variant.file_variant.file_size = file_size;
- in->variant.file_variant.scanned_size = file_size;
- }
-
- if (in->variant.file_variant.shrink_size > file_size)
- in->variant.file_variant.shrink_size = file_size;
-
-
- break;
- case YAFFS_OBJECT_TYPE_HARDLINK:
- if (!itsUnlinked) {
- in->variant.hardlink_variant.equiv_id =
- equiv_id;
- in->hard_links.next =
- (struct ylist_head *) hard_list;
- hard_list = in;
- }
- break;
- case YAFFS_OBJECT_TYPE_DIRECTORY:
- /* Do nothing */
- break;
- case YAFFS_OBJECT_TYPE_SPECIAL:
- /* Do nothing */
- break;
- case YAFFS_OBJECT_TYPE_SYMLINK:
- if (oh) {
- in->variant.symlink_variant.alias =
- yaffs_clone_str(oh->alias);
- if (!in->variant.symlink_variant.alias)
- alloc_failed = 1;
- }
- break;
- }
-
- }
-
- }
-
- } /* End of scanning for each chunk */
-
- if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
- /* If we got this far while scanning, then the block is fully allocated. */
- state = YAFFS_BLOCK_STATE_FULL;
+ if (yaffs2_scan_chunk(dev, bi, blk, c,
+ &found_chunks, chunk_data,
+ &hard_list, summary_available) ==
+ YAFFS_FAIL)
+ alloc_failed = 1;
}
-
- bi->block_state = state;
+ if (bi->block_state == YAFFS_BLOCK_STATE_NEEDS_SCAN) {
+ /* If we got this far while scanning, then the block
+ * is fully allocated. */
+ bi->block_state = YAFFS_BLOCK_STATE_FULL;
+ }
/* Now let's see if it was dirty */
if (bi->pages_in_use == 0 &&
@@ -1511,30 +1505,28 @@ int yaffs2_scan_backwards(yaffs_dev_t *dev)
bi->block_state == YAFFS_BLOCK_STATE_FULL) {
yaffs_block_became_dirty(dev, blk);
}
-
}
-
+
yaffs_skip_rest_of_block(dev);
- if (altBlockIndex)
- YFREE_ALT(blockIndex);
+ if (alt_block_index)
+ vfree(block_index);
else
- YFREE(blockIndex);
+ kfree(block_index);
/* Ok, we've done all the scanning.
* Fix up the hard link chains.
- * We should now have scanned all the objects, now it's time to add these
+ * We have scanned all the objects, now it's time to add these
* hardlinks.
*/
- yaffs_link_fixup(dev, hard_list);
-
+ yaffs_link_fixup(dev, &hard_list);
- yaffs_release_temp_buffer(dev, chunkData, __LINE__);
+ yaffs_release_temp_buffer(dev, chunk_data);
if (alloc_failed)
return YAFFS_FAIL;
- T(YAFFS_TRACE_SCAN, (TSTR("yaffs2_scan_backwards ends" TENDSTR)));
+ yaffs_trace(YAFFS_TRACE_SCAN, "yaffs2_scan_backwards ends");
return YAFFS_OK;
}
diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.h b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.h
index e012aec..2363bfd 100644
--- a/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.h
+++ b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.h
@@ -1,14 +1,16 @@
/*
- * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
*
* This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
+ * it under the terms of the GNU Lesser General Public License version 2.1 as
* published by the Free Software Foundation.
+ *
+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
*/
#ifndef __YAFFS_YAFFS2_H__
@@ -16,21 +18,22 @@
#include "yaffs_guts.h"
-void yaffs_calc_oldest_dirty_seq(yaffs_dev_t *dev);
-void yaffs2_find_oldest_dirty_seq(yaffs_dev_t *dev);
-void yaffs2_clear_oldest_dirty_seq(yaffs_dev_t *dev, yaffs_block_info_t *bi);
-void yaffs2_update_oldest_dirty_seq(yaffs_dev_t *dev, unsigned block_no, yaffs_block_info_t *bi);
-int yaffs_block_ok_for_gc(yaffs_dev_t *dev, yaffs_block_info_t *bi);
-__u32 yaffs2_find_refresh_block(yaffs_dev_t *dev);
-int yaffs2_checkpt_required(yaffs_dev_t *dev);
-int yaffs_calc_checkpt_blocks_required(yaffs_dev_t *dev);
-
+void yaffs_calc_oldest_dirty_seq(struct yaffs_dev *dev);
+void yaffs2_find_oldest_dirty_seq(struct yaffs_dev *dev);
+void yaffs2_clear_oldest_dirty_seq(struct yaffs_dev *dev,
+ struct yaffs_block_info *bi);
+void yaffs2_update_oldest_dirty_seq(struct yaffs_dev *dev, unsigned block_no,
+ struct yaffs_block_info *bi);
+int yaffs_block_ok_for_gc(struct yaffs_dev *dev, struct yaffs_block_info *bi);
+u32 yaffs2_find_refresh_block(struct yaffs_dev *dev);
+int yaffs2_checkpt_required(struct yaffs_dev *dev);
+int yaffs_calc_checkpt_blocks_required(struct yaffs_dev *dev);
-void yaffs2_checkpt_invalidate(yaffs_dev_t *dev);
-int yaffs2_checkpt_save(yaffs_dev_t *dev);
-int yaffs2_checkpt_restore(yaffs_dev_t *dev);
+void yaffs2_checkpt_invalidate(struct yaffs_dev *dev);
+int yaffs2_checkpt_save(struct yaffs_dev *dev);
+int yaffs2_checkpt_restore(struct yaffs_dev *dev);
-int yaffs2_handle_hole(yaffs_obj_t *obj, loff_t new_size);
-int yaffs2_scan_backwards(yaffs_dev_t *dev);
+int yaffs2_handle_hole(struct yaffs_obj *obj, loff_t new_size);
+int yaffs2_scan_backwards(struct yaffs_dev *dev);
#endif
diff --git a/target/linux/generic/files/fs/yaffs2/yportenv.h b/target/linux/generic/files/fs/yaffs2/yportenv.h
index 2f9063b..8975af3 100644
--- a/target/linux/generic/files/fs/yaffs2/yportenv.h
+++ b/target/linux/generic/files/fs/yaffs2/yportenv.h
@@ -1,7 +1,7 @@
/*
* YAFFS: Yet another Flash File System . A NAND-flash specific file system.
*
- * Copyright (C) 2002-2010 Aleph One Ltd.
+ * Copyright (C) 2002-2011 Aleph One Ltd.
* for Toby Churchill Ltd and Brightstar Engineering
*
* Created by Charles Manning <charles@aleph1.co.uk>
@@ -13,7 +13,6 @@
* Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
*/
-
#ifndef __YPORTENV_H__
#define __YPORTENV_H__
@@ -25,15 +24,9 @@
#define MTD_VERSION(a, b, c) (((a) << 16) + ((b) << 8) + (c))
-#if defined CONFIG_YAFFS_WINCE
-
-#include "ywinceenv.h"
-
-#elif defined __KERNEL__
-
+#ifdef YAFFS_OUT_OF_TREE
#include "moduleconfig.h"
-
-/* Linux kernel */
+#endif
#include <linux/version.h>
#define MTD_VERSION_CODE LINUX_VERSION_CODE
@@ -41,7 +34,7 @@
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19))
#include <linux/config.h>
#endif
-
+#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/sched.h>
@@ -49,32 +42,21 @@
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/xattr.h>
-
+#include <linux/list.h>
+#include <linux/types.h>
+#include <linux/fs.h>
+#include <linux/stat.h>
+#include <linux/sort.h>
+#include <linux/bitops.h>
+
+/* These type wrappings are used to support Unicode names in WinCE. */
#define YCHAR char
#define YUCHAR unsigned char
#define _Y(x) x
-#define yaffs_strcat(a, b) strcat(a, b)
-#define yaffs_strcpy(a, b) strcpy(a, b)
-#define yaffs_strncpy(a, b, c) strncpy(a, b, c)
-#define yaffs_strncmp(a, b, c) strncmp(a, b, c)
-#define yaffs_strnlen(s,m) strnlen(s,m)
-#define yaffs_sprintf sprintf
-#define yaffs_toupper(a) toupper(a)
-
-#define Y_INLINE __inline__
#define YAFFS_LOSTNFOUND_NAME "lost+found"
#define YAFFS_LOSTNFOUND_PREFIX "obj"
-/* #define YPRINTF(x) printk x */
-#define YMALLOC(x) kmalloc(x, GFP_NOFS)
-#define YFREE(x) kfree(x)
-#define YMALLOC_ALT(x) vmalloc(x)
-#define YFREE_ALT(x) vfree(x)
-#define YMALLOC_DMA(x) YMALLOC(x)
-
-#define YYIELD() schedule()
-#define Y_DUMP_STACK() dump_stack()
#define YAFFS_ROOT_MODE 0755
#define YAFFS_LOSTNFOUND_MODE 0700
@@ -87,247 +69,17 @@
#define Y_TIME_CONVERT(x) (x)
#endif
-#define yaffs_sum_cmp(x, y) ((x) == (y))
-#define yaffs_strcmp(a, b) strcmp(a, b)
-
-#define TENDSTR "\n"
-#define TSTR(x) KERN_DEBUG x
-#define TCONT(x) x
-#define TOUT(p) printk p
-
#define compile_time_assertion(assertion) \
({ int x = __builtin_choose_expr(assertion, 0, (void)0); (void) x; })
-#elif defined CONFIG_YAFFS_DIRECT
-
-#define MTD_VERSION_CODE MTD_VERSION(2, 6, 22)
-
-/* Direct interface */
-#include "ydirectenv.h"
-
-#elif defined CONFIG_YAFFS_UTIL
-/* Stuff for YAFFS utilities */
-
-#include "stdlib.h"
-#include "stdio.h"
-#include "string.h"
-
-
-#define YMALLOC(x) malloc(x)
-#define YFREE(x) free(x)
-#define YMALLOC_ALT(x) malloc(x)
-#define YFREE_ALT(x) free(x)
-
-#define YCHAR char
-#define YUCHAR unsigned char
-#define _Y(x) x
-#define yaffs_strcat(a, b) strcat(a, b)
-#define yaffs_strcpy(a, b) strcpy(a, b)
-#define yaffs_strncpy(a, b, c) strncpy(a, b, c)
-#define yaffs_strnlen(s,m) strnlen(s,m)
-#define yaffs_sprintf sprintf
-#define yaffs_toupper(a) toupper(a)
-
-#define Y_INLINE inline
-
-/* #define YINFO(s) YPRINTF(( __FILE__ " %d %s\n",__LINE__,s)) */
-/* #define YALERT(s) YINFO(s) */
-
-#define TENDSTR "\n"
-#define TSTR(x) x
-#define TOUT(p) printf p
-
-#define YAFFS_LOSTNFOUND_NAME "lost+found"
-#define YAFFS_LOSTNFOUND_PREFIX "obj"
-/* #define YPRINTF(x) printf x */
-
-#define YAFFS_ROOT_MODE 0755
-#define YAFFS_LOSTNFOUND_MODE 0700
-
-#define yaffs_sum_cmp(x, y) ((x) == (y))
-#define yaffs_strcmp(a, b) strcmp(a, b)
-
-#else
-/* Should have specified a configuration type */
-#error Unknown configuration
-
-#endif
-
-#if defined(CONFIG_YAFFS_DIRECT) || defined(CONFIG_YAFFS_WINCE)
-
-#ifdef CONFIG_YAFFSFS_PROVIDE_VALUES
-
-#ifndef O_RDONLY
-#define O_RDONLY 00
-#endif
-
-#ifndef O_WRONLY
-#define O_WRONLY 01
-#endif
-
-#ifndef O_RDWR
-#define O_RDWR 02
-#endif
-
-#ifndef O_CREAT
-#define O_CREAT 0100
-#endif
-
-#ifndef O_EXCL
-#define O_EXCL 0200
-#endif
-
-#ifndef O_TRUNC
-#define O_TRUNC 01000
-#endif
-
-#ifndef O_APPEND
-#define O_APPEND 02000
-#endif
-
-#ifndef SEEK_SET
-#define SEEK_SET 0
-#endif
-
-#ifndef SEEK_CUR
-#define SEEK_CUR 1
-#endif
-
-#ifndef SEEK_END
-#define SEEK_END 2
-#endif
-
-#ifndef EBUSY
-#define EBUSY 16
-#endif
+#define yaffs_printf(msk, fmt, ...) \
+ printk(KERN_DEBUG "yaffs: " fmt "\n", ##__VA_ARGS__)
-#ifndef ENODEV
-#define ENODEV 19
-#endif
-
-#ifndef EINVAL
-#define EINVAL 22
-#endif
-
-#ifndef EBADF
-#define EBADF 9
-#endif
-
-#ifndef EACCES
-#define EACCES 13
-#endif
-
-#ifndef EXDEV
-#define EXDEV 18
-#endif
-
-#ifndef ENOENT
-#define ENOENT 2
-#endif
-
-#ifndef ENOSPC
-#define ENOSPC 28
-#endif
-
-#ifndef ERANGE
-#define ERANGE 34
-#endif
-
-#ifndef ENODATA
-#define ENODATA 61
-#endif
-
-#ifndef ENOTEMPTY
-#define ENOTEMPTY 39
-#endif
-
-#ifndef ENAMETOOLONG
-#define ENAMETOOLONG 36
-#endif
-
-#ifndef ENOMEM
-#define ENOMEM 12
-#endif
-
-#ifndef EEXIST
-#define EEXIST 17
-#endif
-
-#ifndef ENOTDIR
-#define ENOTDIR 20
-#endif
-
-#ifndef EISDIR
-#define EISDIR 21
-#endif
-
-
-// Mode flags
-
-#ifndef S_IFMT
-#define S_IFMT 0170000
-#endif
-
-#ifndef S_IFLNK
-#define S_IFLNK 0120000
-#endif
-
-#ifndef S_IFDIR
-#define S_IFDIR 0040000
-#endif
-
-#ifndef S_IFREG
-#define S_IFREG 0100000
-#endif
-
-#ifndef S_IREAD
-#define S_IREAD 0000400
-#endif
-
-#ifndef S_IWRITE
-#define S_IWRITE 0000200
-#endif
-
-#ifndef S_IEXEC
-#define S_IEXEC 0000100
-#endif
-
-#ifndef XATTR_CREATE
-#define XATTR_CREATE 1
-#endif
-
-#ifndef XATTR_REPLACE
-#define XATTR_REPLACE 2
-#endif
-
-#ifndef R_OK
-#define R_OK 4
-#define W_OK 2
-#define X_OK 1
-#define F_OK 0
-#endif
-
-#else
-#include <errno.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#endif
-
-#endif
-
-#ifndef Y_DUMP_STACK
-#define Y_DUMP_STACK() do { } while (0)
-#endif
-
-#ifndef YBUG
-#define YBUG() do {\
- T(YAFFS_TRACE_BUG,\
- (TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR),\
- __LINE__));\
- Y_DUMP_STACK();\
+#define yaffs_trace(msk, fmt, ...) do { \
+ if (yaffs_trace_mask & (msk)) \
+ printk(KERN_DEBUG "yaffs: " fmt "\n", ##__VA_ARGS__); \
} while (0)
-#endif
#endif