linux/3.3: merge recent ubifs patches from 3.2

SVN-Revision: 30800

5 files changed, 310 insertions, 2 deletions

diff --git a/target/linux/generic/config-3.3 b/target/linux/generic/config-3.3
index f53668d..967b898 100644
--- a/target/linux/generic/config-3.3
+++ b/target/linux/generic/config-3.3
@@ -491,6 +491,7 @@ CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=y
 # CONFIG_CRYPTO_VMAC is not set
 # CONFIG_CRYPTO_WP512 is not set
 # CONFIG_CRYPTO_XCBC is not set
+# CONFIG_CRYPTO_XZ is not set
 # CONFIG_CRYPTO_XTS is not set
 # CONFIG_CRYPTO_ZLIB is not set
 # CONFIG_CRYSTALHD is not set
diff --git a/target/linux/generic/patches-3.3/540-crypto-xz-decompression-support.patch b/target/linux/generic/patches-3.3/540-crypto-xz-decompression-support.patch
new file mode 100644
index 0000000..3b37007
--- /dev/null
+++ b/target/linux/generic/patches-3.3/540-crypto-xz-decompression-support.patch
@@ -0,0 +1,146 @@
+--- a/crypto/Kconfig
++++ b/crypto/Kconfig
+@@ -924,6 +924,13 @@ config CRYPTO_LZO
+ 	help
+ 	  This is the LZO algorithm.
+ 
++config CRYPTO_XZ
++	tristate "XZ compression algorithm"
++	select CRYPTO_ALGAPI
++	select XZ_DEC
++	help
++	  This is the XZ algorithm. Only decompression is supported for now.
++
+ comment "Random Number Generation"
+ 
+ config CRYPTO_ANSI_CPRNG
+--- a/crypto/Makefile
++++ b/crypto/Makefile
+@@ -82,6 +82,7 @@ obj-$(CONFIG_CRYPTO_MICHAEL_MIC) += mich
+ obj-$(CONFIG_CRYPTO_CRC32C) += crc32c.o
+ obj-$(CONFIG_CRYPTO_AUTHENC) += authenc.o authencesn.o
+ obj-$(CONFIG_CRYPTO_LZO) += lzo.o
++obj-$(CONFIG_CRYPTO_XZ) += xz.o
+ obj-$(CONFIG_CRYPTO_RNG2) += rng.o
+ obj-$(CONFIG_CRYPTO_RNG2) += krng.o
+ obj-$(CONFIG_CRYPTO_ANSI_CPRNG) += ansi_cprng.o
+--- /dev/null
++++ b/crypto/xz.c
+@@ -0,0 +1,117 @@
++/*
++ * Cryptographic API.
++ *
++ * XZ decompression support.
++ *
++ * Copyright (c) 2012 Gabor Juhos <juhosg@openwrt.org>
++ *
++ * 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 <linux/init.h>
++#include <linux/module.h>
++#include <linux/crypto.h>
++#include <linux/xz.h>
++#include <linux/interrupt.h>
++#include <linux/mm.h>
++#include <linux/net.h>
++
++struct xz_comp_ctx {
++	struct xz_dec	*decomp_state;
++	struct xz_buf	decomp_buf;
++};
++
++static int crypto_xz_decomp_init(struct xz_comp_ctx *ctx)
++{
++	ctx->decomp_state = xz_dec_init(XZ_SINGLE, 0);
++	if (!ctx->decomp_state)
++		return -ENOMEM;
++
++	return 0;
++}
++
++static void crypto_xz_decomp_exit(struct xz_comp_ctx *ctx)
++{
++	xz_dec_end(ctx->decomp_state);
++}
++
++static int crypto_xz_init(struct crypto_tfm *tfm)
++{
++	struct xz_comp_ctx *ctx = crypto_tfm_ctx(tfm);
++
++	return crypto_xz_decomp_init(ctx);
++}
++
++static void crypto_xz_exit(struct crypto_tfm *tfm)
++{
++	struct xz_comp_ctx *ctx = crypto_tfm_ctx(tfm);
++
++	crypto_xz_decomp_exit(ctx);
++}
++
++static int crypto_xz_compress(struct crypto_tfm *tfm, const u8 *src,
++			      unsigned int slen, u8 *dst, unsigned int *dlen)
++{
++	return -EOPNOTSUPP;
++}
++
++static int crypto_xz_decompress(struct crypto_tfm *tfm, const u8 *src,
++				unsigned int slen, u8 *dst, unsigned int *dlen)
++{
++	struct xz_comp_ctx *dctx = crypto_tfm_ctx(tfm);
++	struct xz_buf *xz_buf = &dctx->decomp_buf;
++	int ret;
++
++	memset(xz_buf, '\0', sizeof(struct xz_buf));
++
++	xz_buf->in = (u8 *) src;
++	xz_buf->in_pos = 0;
++	xz_buf->in_size = slen;
++	xz_buf->out = (u8 *) dst;
++	xz_buf->out_pos = 0;
++	xz_buf->out_size = *dlen;
++
++	ret = xz_dec_run(dctx->decomp_state, xz_buf);
++	if (ret != XZ_STREAM_END) {
++		ret = -EINVAL;
++		goto out;
++	}
++
++	*dlen = xz_buf->out_pos;
++	ret = 0;
++
++out:
++	return ret;
++}
++
++static struct crypto_alg crypto_xz_alg = {
++	.cra_name		= "xz",
++	.cra_flags		= CRYPTO_ALG_TYPE_COMPRESS,
++	.cra_ctxsize		= sizeof(struct xz_comp_ctx),
++	.cra_module		= THIS_MODULE,
++	.cra_list		= LIST_HEAD_INIT(crypto_xz_alg.cra_list),
++	.cra_init		= crypto_xz_init,
++	.cra_exit		= crypto_xz_exit,
++	.cra_u			= { .compress = {
++	.coa_compress 		= crypto_xz_compress,
++	.coa_decompress  	= crypto_xz_decompress } }
++};
++
++static int __init crypto_xz_mod_init(void)
++{
++	return crypto_register_alg(&crypto_xz_alg);
++}
++
++static void __exit crypto_xz_mod_exit(void)
++{
++	crypto_unregister_alg(&crypto_xz_alg);
++}
++
++module_init(crypto_xz_mod_init);
++module_exit(crypto_xz_mod_exit);
++
++MODULE_LICENSE("GPL v2");
++MODULE_DESCRIPTION("Crypto XZ decompression support");
++MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
diff --git a/target/linux/generic/patches-3.3/541-ubifs-xz-decompression-support.patch b/target/linux/generic/patches-3.3/541-ubifs-xz-decompression-support.patch
new file mode 100644
index 0000000..3c917c1
--- /dev/null
+++ b/target/linux/generic/patches-3.3/541-ubifs-xz-decompression-support.patch
@@ -0,0 +1,94 @@
+--- a/fs/ubifs/Kconfig
++++ b/fs/ubifs/Kconfig
+@@ -5,8 +5,10 @@ config UBIFS_FS
+ 	select CRYPTO if UBIFS_FS_ADVANCED_COMPR
+ 	select CRYPTO if UBIFS_FS_LZO
+ 	select CRYPTO if UBIFS_FS_ZLIB
++	select CRYPTO if UBIFS_FS_XZ
+ 	select CRYPTO_LZO if UBIFS_FS_LZO
+ 	select CRYPTO_DEFLATE if UBIFS_FS_ZLIB
++	select CRYPTO_XZ if UBIFS_FS_XZ
+ 	depends on MTD_UBI
+ 	help
+ 	  UBIFS is a file system for flash devices which works on top of UBI.
+@@ -42,6 +44,14 @@ config UBIFS_FS_ZLIB
+ 	help
+ 	  Zlib compresses better than LZO but it is slower. Say 'Y' if unsure.
+ 
++config UBIFS_FS_XZ
++	bool "XZ decompression support" if UBIFS_FS_ADVANCED_COMPR
++	depends on UBIFS_FS
++	default y
++	help
++	  XZ compresses better the ZLIB but it is slower. 
++	  Say 'Y' if unsure.
++
+ # Debugging-related stuff
+ config UBIFS_FS_DEBUG
+ 	bool "Enable debugging support"
+--- a/fs/ubifs/compress.c
++++ b/fs/ubifs/compress.c
+@@ -71,6 +71,24 @@ static struct ubifs_compressor zlib_comp
+ };
+ #endif
+ 
++#ifdef CONFIG_UBIFS_FS_XZ
++static DEFINE_MUTEX(xz_enc_mutex);
++static DEFINE_MUTEX(xz_dec_mutex);
++
++static struct ubifs_compressor xz_compr = {
++	.compr_type = UBIFS_COMPR_XZ,
++	.comp_mutex = &xz_enc_mutex,
++	.decomp_mutex = &xz_dec_mutex,
++	.name = "xz",
++	.capi_name = "xz",
++};
++#else
++static struct ubifs_compressor zlib_compr = {
++	.compr_type = UBIFS_COMPR_XZ,
++	.name = "xz",
++};
++#endif
++
+ /* All UBIFS compressors */
+ struct ubifs_compressor *ubifs_compressors[UBIFS_COMPR_TYPES_CNT];
+ 
+@@ -233,9 +251,15 @@ int __init ubifs_compressors_init(void)
+ 	if (err)
+ 		goto out_lzo;
+ 
++	err = compr_init(&xz_compr);
++	if (err)
++		goto out_zlib;
++
+ 	ubifs_compressors[UBIFS_COMPR_NONE] = &none_compr;
+ 	return 0;
+ 
++out_zlib:
++	compr_exit(&zlib_compr);
+ out_lzo:
+ 	compr_exit(&lzo_compr);
+ 	return err;
+@@ -248,4 +272,5 @@ void ubifs_compressors_exit(void)
+ {
+ 	compr_exit(&lzo_compr);
+ 	compr_exit(&zlib_compr);
++	compr_exit(&xz_compr);
+ }
+--- a/fs/ubifs/ubifs-media.h
++++ b/fs/ubifs/ubifs-media.h
+@@ -332,12 +332,14 @@ enum {
+  * UBIFS_COMPR_NONE: no compression
+  * UBIFS_COMPR_LZO: LZO compression
+  * UBIFS_COMPR_ZLIB: ZLIB compression
++ * UBIFS_COMPR_XZ: XZ compression
+  * UBIFS_COMPR_TYPES_CNT: count of supported compression types
+  */
+ enum {
+ 	UBIFS_COMPR_NONE,
+ 	UBIFS_COMPR_LZO,
+ 	UBIFS_COMPR_ZLIB,
++	UBIFS_COMPR_XZ,
+ 	UBIFS_COMPR_TYPES_CNT,
+ };
+ 
diff --git a/target/linux/generic/patches-3.3/550-ubifs-symlink-xattr-support.patch b/target/linux/generic/patches-3.3/550-ubifs-symlink-xattr-support.patch
new file mode 100644
index 0000000..b0d818e
--- /dev/null
+++ b/target/linux/generic/patches-3.3/550-ubifs-symlink-xattr-support.patch
@@ -0,0 +1,67 @@
+--- a/fs/ubifs/file.c
++++ b/fs/ubifs/file.c
+@@ -1575,6 +1575,12 @@ const struct inode_operations ubifs_syml
+ 	.follow_link = ubifs_follow_link,
+ 	.setattr     = ubifs_setattr,
+ 	.getattr     = ubifs_getattr,
++#ifdef CONFIG_UBIFS_FS_XATTR
++	.setxattr    = ubifs_setxattr,
++	.getxattr    = ubifs_getxattr,
++	.listxattr   = ubifs_listxattr,
++	.removexattr = ubifs_removexattr,
++#endif
+ };
+ 
+ const struct file_operations ubifs_file_operations = {
+--- a/fs/ubifs/journal.c
++++ b/fs/ubifs/journal.c
+@@ -553,7 +553,8 @@ int ubifs_jnl_update(struct ubifs_info *
+ 
+ 	dbg_jnl("ino %lu, dent '%.*s', data len %d in dir ino %lu",
+ 		inode->i_ino, nm->len, nm->name, ui->data_len, dir->i_ino);
+-	ubifs_assert(dir_ui->data_len == 0);
++	if (!xent)
++		ubifs_assert(dir_ui->data_len == 0);
+ 	ubifs_assert(mutex_is_locked(&dir_ui->ui_mutex));
+ 
+ 	dlen = UBIFS_DENT_NODE_SZ + nm->len + 1;
+@@ -573,6 +574,13 @@ int ubifs_jnl_update(struct ubifs_info *
+ 	aligned_dlen = ALIGN(dlen, 8);
+ 	aligned_ilen = ALIGN(ilen, 8);
+ 	len = aligned_dlen + aligned_ilen + UBIFS_INO_NODE_SZ;
++	if (xent) {
++		/*
++		 * Make sure to account for dir_ui->data_len in
++		 * length calculation in case there is extended attribute.
++		 */
++		len += dir_ui->data_len;
++	}
+ 	dent = kmalloc(len, GFP_NOFS);
+ 	if (!dent)
+ 		return -ENOMEM;
+@@ -649,7 +657,8 @@ int ubifs_jnl_update(struct ubifs_info *
+ 
+ 	ino_key_init(c, &ino_key, dir->i_ino);
+ 	ino_offs += aligned_ilen;
+-	err = ubifs_tnc_add(c, &ino_key, lnum, ino_offs, UBIFS_INO_NODE_SZ);
++	err = ubifs_tnc_add(c, &ino_key, lnum, ino_offs,
++			    UBIFS_INO_NODE_SZ + dir_ui->data_len);
+ 	if (err)
+ 		goto out_ro;
+ 
+--- a/fs/ubifs/xattr.c
++++ b/fs/ubifs/xattr.c
+@@ -209,12 +209,12 @@ static int change_xattr(struct ubifs_inf
+ 		goto out_free;
+ 	}
+ 	inode->i_size = ui->ui_size = size;
+-	ui->data_len = size;
+ 
+ 	mutex_lock(&host_ui->ui_mutex);
+ 	host->i_ctime = ubifs_current_time(host);
+ 	host_ui->xattr_size -= CALC_XATTR_BYTES(ui->data_len);
+ 	host_ui->xattr_size += CALC_XATTR_BYTES(size);
++	ui->data_len = size;
+ 
+ 	/*
+ 	 * It is important to write the host inode after the xattr inode
diff --git a/target/linux/generic/patches-3.3/940-ocf_kbuild_integration.patch b/target/linux/generic/patches-3.3/940-ocf_kbuild_integration.patch
index 55a2bed..b5cce90 100644
--- a/target/linux/generic/patches-3.3/940-ocf_kbuild_integration.patch
+++ b/target/linux/generic/patches-3.3/940-ocf_kbuild_integration.patch
@@ -1,6 +1,6 @@
 --- a/crypto/Kconfig
 +++ b/crypto/Kconfig
-@@ -961,3 +961,6 @@ config CRYPTO_USER_API_SKCIPHER
+@@ -968,3 +968,6 @@ config CRYPTO_USER_API_SKCIPHER
  source "drivers/crypto/Kconfig"
  
  endif	# if CRYPTO
@@ -9,7 +9,7 @@
 +
 --- a/crypto/Makefile
 +++ b/crypto/Makefile
-@@ -91,6 +91,8 @@ obj-$(CONFIG_CRYPTO_USER_API) += af_alg.
+@@ -92,6 +92,8 @@ obj-$(CONFIG_CRYPTO_USER_API) += af_alg.
  obj-$(CONFIG_CRYPTO_USER_API_HASH) += algif_hash.o
  obj-$(CONFIG_CRYPTO_USER_API_SKCIPHER) += algif_skcipher.o