diff options
Diffstat (limited to 'target/linux/generic/files/fs/yaffs2')
| -rw-r--r-- | target/linux/generic/files/fs/yaffs2/NOTE.openwrt | 2 | ||||
| -rw-r--r-- | target/linux/generic/files/fs/yaffs2/yaffs_attribs.c | 16 | ||||
| -rw-r--r-- | target/linux/generic/files/fs/yaffs2/yaffs_guts.c | 342 | ||||
| -rw-r--r-- | target/linux/generic/files/fs/yaffs2/yaffs_guts.h | 35 | ||||
| -rw-r--r-- | target/linux/generic/files/fs/yaffs2/yaffs_mtdif.c | 4 | ||||
| -rw-r--r-- | target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.h | 14 | ||||
| -rw-r--r-- | target/linux/generic/files/fs/yaffs2/yaffs_summary.c | 1 | ||||
| -rw-r--r-- | target/linux/generic/files/fs/yaffs2/yaffs_vfs.c | 218 | ||||
| -rw-r--r-- | target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c | 8 |
9 files changed, 438 insertions, 202 deletions
diff --git a/target/linux/generic/files/fs/yaffs2/NOTE.openwrt b/target/linux/generic/files/fs/yaffs2/NOTE.openwrt index 0be479d..ad807bd 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: bc76682d93955cfb33051beb503ad9f8a5450578 (2013-12-03) +Version: 7e5cf0fa1b694f835cdc184a8395b229fa29f9ae (2014-08-07) diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_attribs.c b/target/linux/generic/files/fs/yaffs2/yaffs_attribs.c index 3d778f2..711941f 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_attribs.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_attribs.c @@ -14,6 +14,14 @@ #include "yaffs_guts.h" #include "yaffs_attribs.h" +#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 0)) +#define IATTR_UID ia_uid +#define IATTR_GID ia_gid +#else +#define IATTR_UID ia_uid.val +#define IATTR_GID ia_gid.val +#endif + void yaffs_load_attribs(struct yaffs_obj *obj, struct yaffs_obj_hdr *oh) { obj->yst_uid = oh->yst_uid; @@ -77,9 +85,9 @@ int yaffs_set_attribs(struct yaffs_obj *obj, struct iattr *attr) if (valid & ATTR_MODE) obj->yst_mode = attr->ia_mode; if (valid & ATTR_UID) - obj->yst_uid = attr->ia_uid; + obj->yst_uid = attr->IATTR_UID; if (valid & ATTR_GID) - obj->yst_gid = attr->ia_gid; + obj->yst_gid = attr->IATTR_GID; if (valid & ATTR_ATIME) obj->yst_atime = Y_TIME_CONVERT(attr->ia_atime); @@ -103,9 +111,9 @@ int yaffs_get_attribs(struct yaffs_obj *obj, struct iattr *attr) attr->ia_mode = obj->yst_mode; valid |= ATTR_MODE; - attr->ia_uid = obj->yst_uid; + attr->IATTR_UID = obj->yst_uid; valid |= ATTR_UID; - attr->ia_gid = obj->yst_gid; + attr->IATTR_GID = obj->yst_gid; valid |= ATTR_GID; Y_TIME_CONVERT(attr->ia_atime) = obj->yst_atime; diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_guts.c b/target/linux/generic/files/fs/yaffs2/yaffs_guts.c index 1fd464d..1c0ae71 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_guts.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_guts.c @@ -631,6 +631,78 @@ static void yaffs_retire_block(struct yaffs_dev *dev, int flash_block) /*---------------- Name handling functions ------------*/ +static void yaffs_load_name_from_oh(struct yaffs_dev *dev, YCHAR *name, + const YCHAR *oh_name, int buff_size) +{ +#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); + } +} + +static void yaffs_load_oh_from_name(struct yaffs_dev *dev, YCHAR *oh_name, + const YCHAR *name) +{ +#ifdef CONFIG_YAFFS_AUTO_UNICODE + + int is_ascii; + const YCHAR *w; + + if (dev->param.auto_unicode) { + + 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++; + } + + 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); + } + } else { +#else + dev = dev; + { +#endif + strncpy(oh_name, name, YAFFS_MAX_NAME_LENGTH - 1); + } +} + static u16 yaffs_calc_name_sum(const YCHAR *name) { u16 sum = 0; @@ -1377,56 +1449,49 @@ static int yaffs_obj_cache_dirty(struct yaffs_obj *obj) return 0; } -static void yaffs_flush_file_cache(struct yaffs_obj *obj) +static void yaffs_flush_single_cache(struct yaffs_cache *cache, int discard) +{ + + if (!cache || cache->locked) + return; + + /* Write it out and free it up if need be.*/ + if (cache->dirty) { + yaffs_wr_data_obj(cache->object, + cache->chunk_id, + cache->data, + cache->n_bytes, + 1); + + cache->dirty = 0; + } + + if (discard) + cache->object = NULL; +} + +static void yaffs_flush_file_cache(struct yaffs_obj *obj, int discard) { 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; - } - } - } - 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 (cache) - /* Hoosterman, disk full while writing cache out. */ - yaffs_trace(YAFFS_TRACE_ERROR, - "yaffs tragedy: no space during cache write"); + /* Find the chunks for this object and flush them. */ + for (i = 0; i < n_caches; i++) { + cache = &dev->cache[i]; + if (cache->object == obj) + yaffs_flush_single_cache(cache, discard); + } + } -/*yaffs_flush_whole_cache(dev) - * - * - */ -void yaffs_flush_whole_cache(struct yaffs_dev *dev) +void yaffs_flush_whole_cache(struct yaffs_dev *dev, int discard) { struct yaffs_obj *obj; int n_caches = dev->param.n_caches; @@ -1442,12 +1507,12 @@ void yaffs_flush_whole_cache(struct yaffs_dev *dev) obj = dev->cache[i].object; } if (obj) - yaffs_flush_file_cache(obj); + yaffs_flush_file_cache(obj, discard); } while (obj); } -/* Grab us a cache chunk for use. +/* Grab us an unused 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. @@ -1462,56 +1527,50 @@ static struct yaffs_cache *yaffs_grab_chunk_worker(struct yaffs_dev *dev) return &dev->cache[i]; } } + return NULL; } 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 pushout; if (dev->param.n_caches < 1) return NULL; - /* Try find a non-dirty one... */ + /* First look for an unused cache */ 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. - */ + if (cache) + return cache; - /* 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; + /* + * Thery were all in use. + * Find the LRU cache and flush it if it is dirty. + */ - 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 = -1; + cache = NULL; + + 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 (!cache || cache->dirty) { - /* Flush and try again */ - yaffs_flush_file_cache(the_obj); - cache = yaffs_grab_chunk_worker(dev); } } + +#if 1 + yaffs_flush_single_cache(cache, 1); +#else + yaffs_flush_file_cache(cache->object, 1); + cache = yaffs_grab_chunk_worker(dev); +#endif + return cache; } @@ -3189,78 +3248,6 @@ static void yaffs_check_obj_details_loaded(struct yaffs_obj *in) yaffs_release_temp_buffer(dev, buf); } -static void yaffs_load_name_from_oh(struct yaffs_dev *dev, YCHAR *name, - const YCHAR *oh_name, int buff_size) -{ -#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); - } -} - -static void yaffs_load_oh_from_name(struct yaffs_dev *dev, YCHAR *oh_name, - const YCHAR *name) -{ -#ifdef CONFIG_YAFFS_AUTO_UNICODE - - int is_ascii; - YCHAR *w; - - if (dev->param.auto_unicode) { - - 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++; - } - - 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); - } - } else { -#else - dev = dev; - { -#endif - strncpy(oh_name, name, YAFFS_MAX_NAME_LENGTH - 1); - } -} - /* UpdateObjectHeader updates the header on NAND for an object. * If name is not NULL, then that new name is used. */ @@ -3765,7 +3752,7 @@ int yaffs_resize_file(struct yaffs_obj *in, loff_t new_size) struct yaffs_dev *dev = in->my_dev; loff_t old_size = in->variant.file_variant.file_size; - yaffs_flush_file_cache(in); + yaffs_flush_file_cache(in, 1); yaffs_invalidate_whole_cache(in); yaffs_check_gc(dev, 0); @@ -3798,12 +3785,15 @@ int yaffs_resize_file(struct yaffs_obj *in, loff_t new_size) return YAFFS_OK; } -int yaffs_flush_file(struct yaffs_obj *in, int update_time, int data_sync) +int yaffs_flush_file(struct yaffs_obj *in, + int update_time, + int data_sync, + int discard_cache) { if (!in->dirty) return YAFFS_OK; - yaffs_flush_file_cache(in); + yaffs_flush_file_cache(in, discard_cache); if (data_sync) return YAFFS_OK; @@ -3950,6 +3940,70 @@ int yaffs_del_obj(struct yaffs_obj *obj) return ret_val; } + +static void yaffs_empty_dir_to_dir(struct yaffs_obj *from_dir, + struct yaffs_obj *to_dir) +{ + struct yaffs_obj *obj; + struct list_head *lh; + struct list_head *n; + + list_for_each_safe(lh, n, &from_dir->variant.dir_variant.children) { + obj = list_entry(lh, struct yaffs_obj, siblings); + yaffs_add_obj_to_dir(to_dir, obj); + } +} + +struct yaffs_obj *yaffs_retype_obj(struct yaffs_obj *obj, + enum yaffs_obj_type type) +{ + /* Tear down the old variant */ + switch (obj->variant_type) { + case YAFFS_OBJECT_TYPE_FILE: + /* Nuke file data */ + yaffs_resize_file(obj, 0); + yaffs_free_tnode(obj->my_dev, obj->variant.file_variant.top); + obj->variant.file_variant.top = NULL; + break; + case YAFFS_OBJECT_TYPE_DIRECTORY: + /* Put the children in lost and found. */ + yaffs_empty_dir_to_dir(obj, obj->my_dev->lost_n_found); + if (!list_empty(&obj->variant.dir_variant.dirty)) + list_del_init(&obj->variant.dir_variant.dirty); + break; + case YAFFS_OBJECT_TYPE_SYMLINK: + /* Nuke symplink data */ + kfree(obj->variant.symlink_variant.alias); + obj->variant.symlink_variant.alias = NULL; + break; + case YAFFS_OBJECT_TYPE_HARDLINK: + list_del_init(&obj->hard_links); + break; + default: + break; + } + + memset(&obj->variant, 0, sizeof(obj->variant)); + + /*Set up new variant if the memset is not enough. */ + switch (type) { + case YAFFS_OBJECT_TYPE_DIRECTORY: + INIT_LIST_HEAD(&obj->variant.dir_variant.children); + INIT_LIST_HEAD(&obj->variant.dir_variant.dirty); + break; + case YAFFS_OBJECT_TYPE_FILE: + case YAFFS_OBJECT_TYPE_SYMLINK: + case YAFFS_OBJECT_TYPE_HARDLINK: + default: + break; + } + + obj->variant_type = type; + + return obj; + +} + static int yaffs_unlink_worker(struct yaffs_obj *obj) { int del_now = 0; @@ -4678,7 +4732,7 @@ int yaffs_guts_ll_init(struct yaffs_dev *dev) } -int yaffs_format_dev(struct yaffs_dev *dev) +int yaffs_guts_format_dev(struct yaffs_dev *dev) { int i; enum yaffs_block_state state; diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_guts.h b/target/linux/generic/files/fs/yaffs2/yaffs_guts.h index 0578536..231f8ac 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_guts.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_guts.h @@ -144,12 +144,12 @@ struct yaffs_cache { */ 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; + u32 chunk_id:20; + u32 serial_number:2; + u32 n_bytes_lsb:10; + u32 obj_id:18; + u32 ecc:12; + u32 n_bytes_msb:2; }; union yaffs_tags_union { @@ -287,9 +287,9 @@ enum yaffs_block_state { 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. */ + s32 soft_del_pages:10; /* number of soft deleted pages */ + s32 pages_in_use:10; /* number of pages in use */ + u32 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, */ @@ -688,8 +688,8 @@ struct yaffs_dev { /* Block Info */ 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 */ + u8 block_info_alt:1; /* allocated using alternative alloc */ + u8 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. */ @@ -776,6 +776,7 @@ struct yaffs_dev { u32 n_page_writes; u32 n_page_reads; u32 n_erasures; + u32 n_bad_queries; u32 n_bad_markings; u32 n_erase_failures; u32 n_gc_copies; @@ -854,6 +855,9 @@ int yaffs_rename_obj(struct yaffs_obj *old_dir, const YCHAR * old_name, int yaffs_unlinker(struct yaffs_obj *dir, const YCHAR * name); int yaffs_del_obj(struct yaffs_obj *obj); +struct yaffs_obj *yaffs_retype_obj(struct yaffs_obj *obj, + enum yaffs_obj_type type); + int yaffs_get_obj_name(struct yaffs_obj *obj, YCHAR * name, int buffer_size); loff_t yaffs_get_obj_length(struct yaffs_obj *obj); @@ -872,10 +876,13 @@ struct yaffs_obj *yaffs_create_file(struct yaffs_obj *parent, const YCHAR *name, u32 mode, u32 uid, u32 gid); -int yaffs_flush_file(struct yaffs_obj *obj, int update_time, int data_sync); +int yaffs_flush_file(struct yaffs_obj *in, + int update_time, + int data_sync, + int discard_cache); /* Flushing and checkpointing */ -void yaffs_flush_whole_cache(struct yaffs_dev *dev); +void yaffs_flush_whole_cache(struct yaffs_dev *dev, int discard); int yaffs_checkpoint_save(struct yaffs_dev *dev); int yaffs_checkpoint_restore(struct yaffs_dev *dev); @@ -978,7 +985,7 @@ u32 yaffs_get_group_base(struct yaffs_dev *dev, struct yaffs_tnode *tn, int yaffs_is_non_empty_dir(struct yaffs_obj *obj); -int yaffs_format_dev(struct yaffs_dev *dev); +int yaffs_guts_format_dev(struct yaffs_dev *dev); void yaffs_addr_to_chunk(struct yaffs_dev *dev, loff_t addr, int *chunk_out, u32 *offset_out); diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.c b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.c index 7ae63c5..7c01461 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_mtdif.c @@ -22,12 +22,14 @@ #include "linux/kernel.h" #include "linux/version.h" #include "linux/types.h" +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 14, 0)) +#include "uapi/linux/major.h" +#endif #include "yaffs_trace.h" #include "yaffs_guts.h" #include "yaffs_linux.h" - #if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 2, 0)) #define MTD_OPS_AUTO_OOB MTD_OOB_AUTO #endif diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.h b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.h index b80f0a5..3015d58 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.h +++ b/target/linux/generic/files/fs/yaffs2/yaffs_packedtags1.h @@ -21,13 +21,13 @@ #include "yaffs_guts.h" 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 unused_stuff:1; + u32 chunk_id:20; + u32 serial_number:2; + u32 n_bytes:10; + u32 obj_id:18; + u32 ecc:12; + u32 deleted:1; + u32 unused_stuff:1; unsigned should_be_ff; }; diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_summary.c b/target/linux/generic/files/fs/yaffs2/yaffs_summary.c index 6f3c783..3c9e723 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_summary.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_summary.c @@ -235,7 +235,6 @@ int yaffs_summary_read(struct yaffs_dev *dev, 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; diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_vfs.c b/target/linux/generic/files/fs/yaffs2/yaffs_vfs.c index 67050d4..76bc1db 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_vfs.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_vfs.c @@ -236,6 +236,15 @@ MODULE_PARM(yaffs_gc_control, "i"); #define Y_CLEAR_INODE(i) end_writeback(i) #endif +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 12, 0)) +#define YAFFS_USE_DIR_ITERATE +#endif + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,12,0)) +#define YAFFS_NEW_PROCFS +#include <linux/seq_file.h> +#endif + #define update_dir_time(dir) do {\ (dir)->i_ctime = (dir)->i_mtime = CURRENT_TIME; \ @@ -1023,7 +1032,11 @@ static int yaffs_readlink(struct dentry *dentry, char __user * buffer, if (!alias) return -ENOMEM; +#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 15, 0) ret = vfs_readlink(dentry, buffer, buflen, alias); +#else + ret = readlink_copy(buffer, buflen, alias); +#endif kfree(alias); return ret; } @@ -1206,6 +1219,23 @@ struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, #define YCRED(x) (x->cred) #endif +#if LINUX_VERSION_CODE < KERNEL_VERSION(3,14,0) +#define YPROC_uid(p) (YCRED(p)->fsuid) +#define YPROC_gid(p) (YCRED(p)->fsgid) +#define EXTRACT_gid(x) x +#define EXTRACT_uid(x) x +#define MAKE_gid(x) x +#define MAKE_uid(x) x +#else +#define YPROC_uid(p) from_kuid(&init_user_ns, YCRED(p)->fsuid) +#define YPROC_gid(p) from_kgid(&init_user_ns, YCRED(p)->fsgid) +#define EXTRACT_gid(x) from_kgid(&init_user_ns, x) +#define EXTRACT_uid(x) from_kuid(&init_user_ns, x) +#define MAKE_gid(x) make_kgid(&init_user_ns, x) +#define MAKE_uid(x) make_kuid(&init_user_ns, x) +#endif + + #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) @@ -1225,9 +1255,9 @@ static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, struct yaffs_obj *parent = yaffs_inode_to_obj(dir); int error = -ENOSPC; - uid_t uid = YCRED(current)->fsuid; + uid_t uid = YPROC_uid(current); gid_t gid = - (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid; + (dir->i_mode & S_ISGID) ? EXTRACT_gid(dir->i_gid) : YPROC_gid(current); if ((dir->i_mode & S_ISGID) && S_ISDIR(mode)) mode |= S_ISGID; @@ -1424,9 +1454,9 @@ static int yaffs_symlink(struct inode *dir, struct dentry *dentry, { struct yaffs_obj *obj; struct yaffs_dev *dev; - uid_t uid = YCRED(current)->fsuid; + uid_t uid = YPROC_uid(current); gid_t gid = - (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid; + (dir->i_mode & S_ISGID) ? EXTRACT_gid(dir->i_gid) : YPROC_gid(current); yaffs_trace(YAFFS_TRACE_OS, "yaffs_symlink"); @@ -1674,6 +1704,77 @@ static void yaffs_remove_obj_callback(struct yaffs_obj *obj) /*-----------------------------------------------------------------*/ +#ifdef YAFFS_USE_DIR_ITERATE +static int yaffs_iterate(struct file *f, struct dir_context *dc) +{ + struct yaffs_obj *obj; + struct yaffs_dev *dev; + struct yaffs_search_context *sc; + unsigned long curoffs; + struct yaffs_obj *l; + int ret_val = 0; + + char name[YAFFS_MAX_NAME_LENGTH + 1]; + + obj = yaffs_dentry_to_obj(f->f_dentry); + dev = obj->my_dev; + + yaffs_gross_lock(dev); + + yaffs_dev_to_lc(dev)->readdir_process = current; + + sc = yaffs_new_search(obj); + if (!sc) { + ret_val = -ENOMEM; + goto out; + } + + if (!dir_emit_dots(f, dc)) + return 0; + + curoffs = 1; + + while (sc->next_return) { + curoffs++; + l = sc->next_return; + if (curoffs >= dc->pos) { + 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); + yaffs_trace(YAFFS_TRACE_OS, + "yaffs_readdir: %s inode %d", + name, yaffs_get_obj_inode(l)); + + yaffs_gross_unlock(dev); + + if (!dir_emit(dc, + name, + strlen(name), + this_inode, + this_type)) { + yaffs_gross_lock(dev); + goto out; + } + + yaffs_gross_lock(dev); + + dc->pos++; + 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 ret_val; +} + +#else + static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir) { struct yaffs_obj *obj; @@ -1781,9 +1882,15 @@ out: return ret_val; } +#endif + static const struct file_operations yaffs_dir_operations = { .read = generic_read_dir, +#ifdef YAFFS_USE_DIR_ITERATE + .iterate = yaffs_iterate, +#else .readdir = yaffs_readdir, +#endif .fsync = yaffs_sync_object, .llseek = generic_file_llseek, }; @@ -1829,8 +1936,8 @@ static void yaffs_fill_inode_from_obj(struct inode *inode, inode->i_ino = obj->obj_id; inode->i_mode = obj->yst_mode; - inode->i_uid = obj->yst_uid; - inode->i_gid = obj->yst_gid; + inode->i_uid = MAKE_uid(obj->yst_uid); + inode->i_gid = MAKE_gid(obj->yst_gid); #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) inode->i_blksize = inode->i_sb->s_blocksize; #endif @@ -1856,7 +1963,7 @@ static void yaffs_fill_inode_from_obj(struct inode *inode, 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_mode, obj->yst_uid, obj->yst_gid, inode->i_size, atomic_read(&inode->i_count)); switch (obj->yst_mode & S_IFMT) { @@ -2670,7 +2777,7 @@ static struct super_block *yaffs_internal_read_super(int yaffs_version, /* Get the device */ mtd = get_mtd_device(NULL, MINOR(sb->s_dev)); - if (!mtd) { + if (IS_ERR(mtd)) { yaffs_trace(YAFFS_TRACE_ALWAYS, "yaffs: MTD device %u either not valid or unavailable", MINOR(sb->s_dev)); @@ -2713,15 +2820,11 @@ static struct super_block *yaffs_internal_read_super(int yaffs_version, context = kmalloc(sizeof(struct yaffs_linux_context), GFP_KERNEL); if (!dev || !context) { - if (dev) - kfree(dev); - if (context) - kfree(context); + kfree(dev); + kfree(context); dev = NULL; context = NULL; - } - if (!dev) { /* Deep shit could not allocate device structure */ yaffs_trace(YAFFS_TRACE_ALWAYS, "yaffs_read_super: Failed trying to allocate struct yaffs_dev." @@ -3188,7 +3291,7 @@ 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) { unsigned rg = 0, mask_bitfield; char *end; @@ -3289,7 +3392,7 @@ static int yaffs_proc_write_trace_options(struct file *file, const char *buf, */ static int yaffs_proc_debug_write(struct file *file, const char *buf, - unsigned long count, void *data) + unsigned long count) { char str[100]; @@ -3301,7 +3404,7 @@ static int yaffs_proc_debug_write(struct file *file, const char *buf, struct list_head *item; memset(str, 0, sizeof(str)); - memcpy(str, buf, min(count, sizeof(str) -1)); + memcpy(str, buf, min((size_t)count, sizeof(str) -1)); cmd = str[1]; @@ -3364,12 +3467,18 @@ static int yaffs_proc_debug_write(struct file *file, const char *buf, return count; } + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 0)) static int yaffs_proc_write(struct file *file, const char *buf, - unsigned long count, void *data) + unsigned long count, void *ppos) +#else +static ssize_t yaffs_proc_write(struct file *file, const char __user *buf, + size_t count, loff_t *ppos) +#endif { if (buf[0] == '.') - return yaffs_proc_debug_write(file, buf, count, data); - return yaffs_proc_write_trace_options(file, buf, count, data); + return yaffs_proc_debug_write(file, buf, count); + return yaffs_proc_write_trace_options(file, buf, count); } /* Stuff to handle installation of file systems */ @@ -3384,16 +3493,52 @@ static struct file_system_to_install fs_to_install[] = { {NULL, 0} }; -static int __init init_yaffs_fs(void) + +#ifdef YAFFS_NEW_PROCFS +static int yaffs_proc_show(struct seq_file *m, void *v) { - int error = 0; - struct file_system_to_install *fsinst; + /* FIXME: Unify in a better way? */ + char buffer[512]; + char *start; + int len; - yaffs_trace(YAFFS_TRACE_ALWAYS, - "yaffs built " __DATE__ " " __TIME__ " Installing."); + len = yaffs_proc_read(buffer, &start, 0, sizeof(buffer), NULL, NULL); + seq_puts(m, buffer); + return 0; +} + +static int yaffs_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, yaffs_proc_show, NULL); +} + +static struct file_operations procfs_ops = { + .owner = THIS_MODULE, + .open = yaffs_proc_open, + .read = seq_read, + .write = yaffs_proc_write, +}; + +static int yaffs_procfs_init(void) +{ + /* Install the proc_fs entries */ + my_proc_entry = proc_create("yaffs", + S_IRUGO | S_IFREG, + YPROC_ROOT, + &procfs_ops); + + if (my_proc_entry) { + return 0; + } else { + return -ENOMEM; + } +} + +#else - mutex_init(&yaffs_context_lock); +static int yaffs_procfs_init(void) +{ /* Install the proc_fs entries */ my_proc_entry = create_proc_entry("yaffs", S_IRUGO | S_IFREG, YPROC_ROOT); @@ -3402,9 +3547,28 @@ static int __init init_yaffs_fs(void) my_proc_entry->write_proc = yaffs_proc_write; my_proc_entry->read_proc = yaffs_proc_read; my_proc_entry->data = NULL; + return 0; } else { return -ENOMEM; - } + } +} + +#endif + + +static int __init init_yaffs_fs(void) +{ + int error = 0; + struct file_system_to_install *fsinst; + + yaffs_trace(YAFFS_TRACE_ALWAYS, + "yaffs built " __DATE__ " " __TIME__ " Installing."); + + mutex_init(&yaffs_context_lock); + + error = yaffs_procfs_init(); + if (error) + return error; /* Now add the file system entries */ diff --git a/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c index f1dc972..8c31a66 100644 --- a/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c +++ b/target/linux/generic/files/fs/yaffs2/yaffs_yaffs2.c @@ -1193,12 +1193,14 @@ static inline int yaffs2_scan_chunk(struct yaffs_dev *dev, } if (!in->valid && in->variant_type != - (oh ? oh->type : tags.extra_obj_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", + "yaffs tragedy: Bad 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); + in = yaffs_retype_obj(in, oh ? oh->type : tags.extra_obj_type); + } if (!in->valid && (tags.obj_id == YAFFS_OBJECTID_ROOT || @@ -1439,7 +1441,7 @@ int yaffs2_scan_backwards(struct yaffs_dev *dev) bi++; } - yaffs_trace(YAFFS_TRACE_SCAN, "%d blocks to be sorted...", n_to_scan); + yaffs_trace(YAFFS_TRACE_ALWAYS, "%d blocks to be sorted...", n_to_scan); cond_resched(); |