linux/2.6.31: R.I.P.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31412 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 0 insertions, 426 deletions

diff --git a/target/linux/generic/patches-2.6.31/003-squashfs_add_decompressor_framework.patch b/target/linux/generic/patches-2.6.31/003-squashfs_add_decompressor_framework.patch
deleted file mode 100644
index cbfbf5369..000000000
--- a/target/linux/generic/patches-2.6.31/003-squashfs_add_decompressor_framework.patch
+++ /dev/null
@@ -1,426 +0,0 @@
-From 327fbf47a419befc6bff74f3ca42d2b6f0841903 Mon Sep 17 00:00:00 2001
-From: Phillip Lougher <phillip@lougher.demon.co.uk>
-Date: Tue, 6 Oct 2009 04:04:15 +0100
-Subject: [PATCH] Squashfs: add a decompressor framework
-
-This adds a decompressor framework which allows multiple compression
-algorithms to be cleanly supported.
-
-Also update zlib wrapper and other code to use the new framework.
-
-Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
----
- fs/squashfs/Makefile         |    2 +-
- fs/squashfs/block.c          |    6 ++--
- fs/squashfs/decompressor.c   |   58 ++++++++++++++++++++++++++++++++++++++++++
- fs/squashfs/decompressor.h   |   55 +++++++++++++++++++++++++++++++++++++++
- fs/squashfs/squashfs.h       |   14 +++++-----
- fs/squashfs/squashfs_fs_sb.h |   41 +++++++++++++++--------------
- fs/squashfs/super.c          |   45 ++++++++++++++++++-------------
- fs/squashfs/zlib_wrapper.c   |   17 ++++++++++--
- 8 files changed, 185 insertions(+), 53 deletions(-)
- create mode 100644 fs/squashfs/decompressor.c
- create mode 100644 fs/squashfs/decompressor.h
-
---- a/fs/squashfs/Makefile
-+++ b/fs/squashfs/Makefile
-@@ -4,4 +4,4 @@
- 
- obj-$(CONFIG_SQUASHFS) += squashfs.o
- squashfs-y += block.o cache.o dir.o export.o file.o fragment.o id.o inode.o
--squashfs-y += namei.o super.o symlink.o zlib_wrapper.o
-+squashfs-y += namei.o super.o symlink.o zlib_wrapper.o decompressor.o
---- a/fs/squashfs/block.c
-+++ b/fs/squashfs/block.c
-@@ -36,7 +36,7 @@
- #include "squashfs_fs_sb.h"
- #include "squashfs_fs_i.h"
- #include "squashfs.h"
--
-+#include "decompressor.h"
- /*
-  * Read the metadata block length, this is stored in the first two
-  * bytes of the metadata block.
-@@ -151,8 +151,8 @@ int squashfs_read_data(struct super_bloc
- 	}
- 
- 	if (compressed) {
--		length = zlib_uncompress(msblk, buffer, bh, b, offset, length,
--			srclength, pages);
-+		length = squashfs_decompress(msblk, buffer, bh, b, offset,
-+			length, srclength, pages);
- 		if (length < 0)
- 			goto read_failure;
- 	} else {
---- /dev/null
-+++ b/fs/squashfs/decompressor.c
-@@ -0,0 +1,58 @@
-+/*
-+ * Squashfs - a compressed read only filesystem for Linux
-+ *
-+ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
-+ * Phillip Lougher <phillip@lougher.demon.co.uk>
-+ *
-+ * This program is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU General Public License
-+ * as published by the Free Software Foundation; either version 2,
-+ * or (at your option) any later version.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+ * GNU General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software
-+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-+ *
-+ * decompressor.c
-+ */
-+
-+#include <linux/types.h>
-+#include <linux/mutex.h>
-+#include <linux/buffer_head.h>
-+
-+#include "squashfs_fs.h"
-+#include "squashfs_fs_sb.h"
-+#include "squashfs_fs_i.h"
-+#include "decompressor.h"
-+#include "squashfs.h"
-+
-+/*
-+ * This file (and decompressor.h) implements a decompressor framework for
-+ * Squashfs, allowing multiple decompressors to be easily supported
-+ */
-+
-+static const struct squashfs_decompressor squashfs_unknown_comp_ops = {
-+	NULL, NULL, NULL, 0, "unknown", 0
-+};
-+
-+static const struct squashfs_decompressor *decompressor[] = {
-+	&squashfs_zlib_comp_ops,
-+	&squashfs_unknown_comp_ops
-+};
-+
-+
-+const struct squashfs_decompressor *squashfs_lookup_decompressor(int id)
-+{
-+	int i;
-+
-+	for (i = 0; decompressor[i]->id; i++)
-+		if (id == decompressor[i]->id)
-+			break;
-+
-+	return decompressor[i];
-+}
---- /dev/null
-+++ b/fs/squashfs/decompressor.h
-@@ -0,0 +1,55 @@
-+#ifndef DECOMPRESSOR_H
-+#define DECOMPRESSOR_H
-+/*
-+ * Squashfs - a compressed read only filesystem for Linux
-+ *
-+ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
-+ * Phillip Lougher <phillip@lougher.demon.co.uk>
-+ *
-+ * This program is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU General Public License
-+ * as published by the Free Software Foundation; either version 2,
-+ * or (at your option) any later version.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+ * GNU General Public License for more details.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software
-+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-+ *
-+ * decompressor.h
-+ */
-+
-+struct squashfs_decompressor {
-+	void	*(*init)(void);
-+	void	(*free)(void *);
-+	int	(*decompress)(struct squashfs_sb_info *, void **,
-+		struct buffer_head **, int, int, int, int, int);
-+	int	id;
-+	char	*name;
-+	int	supported;
-+};
-+
-+static inline void *squashfs_decompressor_init(struct squashfs_sb_info *msblk)
-+{
-+	return msblk->decompressor->init();
-+}
-+
-+static inline void squashfs_decompressor_free(struct squashfs_sb_info *msblk,
-+	void *s)
-+{
-+	if (msblk->decompressor)
-+		msblk->decompressor->free(s);
-+}
-+
-+static inline int squashfs_decompress(struct squashfs_sb_info *msblk,
-+	void **buffer, struct buffer_head **bh, int b, int offset, int length,
-+	int srclength, int pages)
-+{
-+	return msblk->decompressor->decompress(msblk, buffer, bh, b, offset,
-+		length, srclength, pages);
-+}
-+#endif
---- a/fs/squashfs/squashfs.h
-+++ b/fs/squashfs/squashfs.h
-@@ -51,6 +51,9 @@ extern struct squashfs_cache_entry *squa
- 				u64, int);
- extern int squashfs_read_table(struct super_block *, void *, u64, int);
- 
-+/* decompressor.c */
-+extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int);
-+
- /* export.c */
- extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64,
- 				unsigned int);
-@@ -70,14 +73,8 @@ extern struct inode *squashfs_iget(struc
- 				unsigned int);
- extern int squashfs_read_inode(struct inode *, long long);
- 
--/* zlib_wrapper.c */
--extern void *zlib_init(void);
--extern void zlib_free(void *);
--extern int zlib_uncompress(struct squashfs_sb_info *, void **,
--				struct buffer_head **, int, int, int, int, int);
--
- /*
-- * Inodes and files operations
-+ * Inodes, files and decompressor operations
-  */
- 
- /* dir.c */
-@@ -94,3 +91,6 @@ extern const struct inode_operations squ
- 
- /* symlink.c */
- extern const struct address_space_operations squashfs_symlink_aops;
-+
-+/* zlib_wrapper.c */
-+extern const struct squashfs_decompressor squashfs_zlib_comp_ops;
---- a/fs/squashfs/squashfs_fs_sb.h
-+++ b/fs/squashfs/squashfs_fs_sb.h
-@@ -52,25 +52,26 @@ struct squashfs_cache_entry {
- };
- 
- struct squashfs_sb_info {
--	int			devblksize;
--	int			devblksize_log2;
--	struct squashfs_cache	*block_cache;
--	struct squashfs_cache	*fragment_cache;
--	struct squashfs_cache	*read_page;
--	int			next_meta_index;
--	__le64			*id_table;
--	__le64			*fragment_index;
--	unsigned int		*fragment_index_2;
--	struct mutex		read_data_mutex;
--	struct mutex		meta_index_mutex;
--	struct meta_index	*meta_index;
--	void			*stream;
--	__le64			*inode_lookup_table;
--	u64			inode_table;
--	u64			directory_table;
--	unsigned int		block_size;
--	unsigned short		block_log;
--	long long		bytes_used;
--	unsigned int		inodes;
-+	const struct squashfs_decompressor	*decompressor;
-+	int					devblksize;
-+	int					devblksize_log2;
-+	struct squashfs_cache			*block_cache;
-+	struct squashfs_cache			*fragment_cache;
-+	struct squashfs_cache			*read_page;
-+	int					next_meta_index;
-+	__le64					*id_table;
-+	__le64					*fragment_index;
-+	unsigned int				*fragment_index_2;
-+	struct mutex				read_data_mutex;
-+	struct mutex				meta_index_mutex;
-+	struct meta_index			*meta_index;
-+	void					*stream;
-+	__le64					*inode_lookup_table;
-+	u64					inode_table;
-+	u64					directory_table;
-+	unsigned int				block_size;
-+	unsigned short				block_log;
-+	long long				bytes_used;
-+	unsigned int				inodes;
- };
- #endif
---- a/fs/squashfs/super.c
-+++ b/fs/squashfs/super.c
-@@ -41,27 +41,35 @@
- #include "squashfs_fs_sb.h"
- #include "squashfs_fs_i.h"
- #include "squashfs.h"
-+#include "decompressor.h"
- 
- static struct file_system_type squashfs_fs_type;
- static struct super_operations squashfs_super_ops;
- 
--static int supported_squashfs_filesystem(short major, short minor, short comp)
-+static const struct squashfs_decompressor *supported_squashfs_filesystem(short
-+	major, short minor, short id)
- {
-+	const struct squashfs_decompressor *decompressor;
-+
- 	if (major < SQUASHFS_MAJOR) {
- 		ERROR("Major/Minor mismatch, older Squashfs %d.%d "
- 			"filesystems are unsupported\n", major, minor);
--		return -EINVAL;
-+		return NULL;
- 	} else if (major > SQUASHFS_MAJOR || minor > SQUASHFS_MINOR) {
- 		ERROR("Major/Minor mismatch, trying to mount newer "
- 			"%d.%d filesystem\n", major, minor);
- 		ERROR("Please update your kernel\n");
--		return -EINVAL;
-+		return NULL;
- 	}
- 
--	if (comp != ZLIB_COMPRESSION)
--		return -EINVAL;
-+	decompressor = squashfs_lookup_decompressor(id);
-+	if (!decompressor->supported) {
-+		ERROR("Filesystem uses \"%s\" compression. This is not "
-+			"supported\n", decompressor->name);
-+		return NULL;
-+	}
- 
--	return 0;
-+	return decompressor;
- }
- 
- 
-@@ -86,10 +94,6 @@ static int squashfs_fill_super(struct su
- 	}
- 	msblk = sb->s_fs_info;
- 
--	msblk->stream = zlib_init();
--	if (msblk->stream == NULL)
--		goto failure;
--
- 	sblk = kzalloc(sizeof(*sblk), GFP_KERNEL);
- 	if (sblk == NULL) {
- 		ERROR("Failed to allocate squashfs_super_block\n");
-@@ -116,25 +120,25 @@ static int squashfs_fill_super(struct su
- 		goto failed_mount;
- 	}
- 
-+	err = -EINVAL;
-+
- 	/* Check it is a SQUASHFS superblock */
- 	sb->s_magic = le32_to_cpu(sblk->s_magic);
- 	if (sb->s_magic != SQUASHFS_MAGIC) {
- 		if (!silent)
- 			ERROR("Can't find a SQUASHFS superblock on %s\n",
- 						bdevname(sb->s_bdev, b));
--		err = -EINVAL;
- 		goto failed_mount;
- 	}
- 
--	/* Check the MAJOR & MINOR versions and compression type */
--	err = supported_squashfs_filesystem(le16_to_cpu(sblk->s_major),
-+	/* Check the MAJOR & MINOR versions and lookup compression type */
-+	msblk->decompressor = supported_squashfs_filesystem(
-+			le16_to_cpu(sblk->s_major),
- 			le16_to_cpu(sblk->s_minor),
- 			le16_to_cpu(sblk->compression));
--	if (err < 0)
-+	if (msblk->decompressor == NULL)
- 		goto failed_mount;
- 
--	err = -EINVAL;
--
- 	/*
- 	 * Check if there's xattrs in the filesystem.  These are not
- 	 * supported in this version, so warn that they will be ignored.
-@@ -201,6 +205,10 @@ static int squashfs_fill_super(struct su
- 
- 	err = -ENOMEM;
- 
-+	msblk->stream = squashfs_decompressor_init(msblk);
-+	if (msblk->stream == NULL)
-+		goto failed_mount;
-+
- 	msblk->block_cache = squashfs_cache_init("metadata",
- 			SQUASHFS_CACHED_BLKS, SQUASHFS_METADATA_SIZE);
- 	if (msblk->block_cache == NULL)
-@@ -288,7 +296,7 @@ failed_mount:
- 	squashfs_cache_delete(msblk->block_cache);
- 	squashfs_cache_delete(msblk->fragment_cache);
- 	squashfs_cache_delete(msblk->read_page);
--	zlib_free(msblk->stream);
-+	squashfs_decompressor_free(msblk, msblk->stream);
- 	kfree(msblk->inode_lookup_table);
- 	kfree(msblk->fragment_index);
- 	kfree(msblk->id_table);
-@@ -298,7 +306,6 @@ failed_mount:
- 	return err;
- 
- failure:
--	zlib_free(msblk->stream);
- 	kfree(sb->s_fs_info);
- 	sb->s_fs_info = NULL;
- 	return -ENOMEM;
-@@ -342,7 +349,7 @@ static void squashfs_put_super(struct su
- 		squashfs_cache_delete(sbi->block_cache);
- 		squashfs_cache_delete(sbi->fragment_cache);
- 		squashfs_cache_delete(sbi->read_page);
--		zlib_free(sbi->stream);
-+		squashfs_decompressor_free(sbi, sbi->stream);
- 		kfree(sbi->id_table);
- 		kfree(sbi->fragment_index);
- 		kfree(sbi->meta_index);
---- a/fs/squashfs/zlib_wrapper.c
-+++ b/fs/squashfs/zlib_wrapper.c
-@@ -30,8 +30,9 @@
- #include "squashfs_fs_sb.h"
- #include "squashfs_fs_i.h"
- #include "squashfs.h"
-+#include "decompressor.h"
- 
--void *zlib_init()
-+static void *zlib_init(void)
- {
- 	z_stream *stream = kmalloc(sizeof(z_stream), GFP_KERNEL);
- 	if (stream == NULL)
-@@ -50,7 +51,7 @@ failed:
- }
- 
- 
--void zlib_free(void *strm)
-+static void zlib_free(void *strm)
- {
- 	z_stream *stream = strm;
- 
-@@ -60,7 +61,7 @@ void zlib_free(void *strm)
- }
- 
- 
--int zlib_uncompress(struct squashfs_sb_info *msblk, void **buffer,
-+static int zlib_uncompress(struct squashfs_sb_info *msblk, void **buffer,
- 	struct buffer_head **bh, int b, int offset, int length, int srclength,
- 	int pages)
- {
-@@ -137,3 +138,13 @@ release_mutex:
- 
- 	return -EIO;
- }
-+
-+const struct squashfs_decompressor squashfs_zlib_comp_ops = {
-+	.init = zlib_init,
-+	.free = zlib_free,
-+	.decompress = zlib_uncompress,
-+	.id = ZLIB_COMPRESSION,
-+	.name = "zlib",
-+	.supported = 1
-+};
-+