diff options
9 files changed, 1591 insertions, 3 deletions
diff --git a/recipes/linux/linux-2.6.31/0001-Squashfs-move-zlib-decompression-wrapper-code-into.patch b/recipes/linux/linux-2.6.31/0001-Squashfs-move-zlib-decompression-wrapper-code-into.patch new file mode 100644 index 0000000000..32f79f45f2 --- /dev/null +++ b/recipes/linux/linux-2.6.31/0001-Squashfs-move-zlib-decompression-wrapper-code-into.patch @@ -0,0 +1,255 @@ +From 6c4419d997d4431bb62e73475cd6b084e83efbd1 Mon Sep 17 00:00:00 2001 +From: Phillip Lougher <phillip@lougher.demon.co.uk> +Date: Tue, 22 Sep 2009 19:25:24 +0100 +Subject: [PATCH] Squashfs: move zlib decompression wrapper code into a separate file + +Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk> +--- + fs/squashfs/Makefile | 2 +- + fs/squashfs/block.c | 74 ++---------------------------- + fs/squashfs/squashfs.h | 4 ++ + fs/squashfs/zlib_wrapper.c | 109 ++++++++++++++++++++++++++++++++++++++++++++ + 4 files changed, 118 insertions(+), 71 deletions(-) + +diff --git a/fs/squashfs/Makefile b/fs/squashfs/Makefile +index 70e3244..a397e6f 100644 +--- 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 ++squashfs-y += namei.o super.o symlink.o zlib_wrapper.o +diff --git a/fs/squashfs/block.c b/fs/squashfs/block.c +index 2a79603..5cd3934 100644 +--- a/fs/squashfs/block.c ++++ b/fs/squashfs/block.c +@@ -29,7 +29,6 @@ + #include <linux/fs.h> + #include <linux/vfs.h> + #include <linux/slab.h> +-#include <linux/mutex.h> + #include <linux/string.h> + #include <linux/buffer_head.h> + #include <linux/zlib.h> +@@ -153,72 +152,10 @@ int squashfs_read_data(struct super_block *sb, void **buffer, u64 index, + } + + if (compressed) { +- int zlib_err = 0, zlib_init = 0; +- +- /* +- * Uncompress block. +- */ +- +- mutex_lock(&msblk->read_data_mutex); +- +- msblk->stream.avail_out = 0; +- msblk->stream.avail_in = 0; +- +- bytes = length; +- do { +- if (msblk->stream.avail_in == 0 && k < b) { +- avail = min(bytes, msblk->devblksize - offset); +- bytes -= avail; +- wait_on_buffer(bh[k]); +- if (!buffer_uptodate(bh[k])) +- goto release_mutex; +- +- if (avail == 0) { +- offset = 0; +- put_bh(bh[k++]); +- continue; +- } +- +- msblk->stream.next_in = bh[k]->b_data + offset; +- msblk->stream.avail_in = avail; +- offset = 0; +- } +- +- if (msblk->stream.avail_out == 0 && page < pages) { +- msblk->stream.next_out = buffer[page++]; +- msblk->stream.avail_out = PAGE_CACHE_SIZE; +- } +- +- if (!zlib_init) { +- zlib_err = zlib_inflateInit(&msblk->stream); +- if (zlib_err != Z_OK) { +- ERROR("zlib_inflateInit returned" +- " unexpected result 0x%x," +- " srclength %d\n", zlib_err, +- srclength); +- goto release_mutex; +- } +- zlib_init = 1; +- } +- +- zlib_err = zlib_inflate(&msblk->stream, Z_SYNC_FLUSH); +- +- if (msblk->stream.avail_in == 0 && k < b) +- put_bh(bh[k++]); +- } while (zlib_err == Z_OK); +- +- if (zlib_err != Z_STREAM_END) { +- ERROR("zlib_inflate error, data probably corrupt\n"); +- goto release_mutex; +- } +- +- zlib_err = zlib_inflateEnd(&msblk->stream); +- if (zlib_err != Z_OK) { +- ERROR("zlib_inflate error, data probably corrupt\n"); +- goto release_mutex; +- } +- length = msblk->stream.total_out; +- mutex_unlock(&msblk->read_data_mutex); ++ length = zlib_uncompress(msblk, buffer, bh, b, offset, length, ++ srclength, pages); ++ if (length < 0) ++ goto read_failure; + } else { + /* + * Block is uncompressed. +@@ -255,9 +192,6 @@ int squashfs_read_data(struct super_block *sb, void **buffer, u64 index, + kfree(bh); + return length; + +-release_mutex: +- mutex_unlock(&msblk->read_data_mutex); +- + block_release: + for (; k < b; k++) + put_bh(bh[k]); +diff --git a/fs/squashfs/squashfs.h b/fs/squashfs/squashfs.h +index 0e9feb6..988bdce 100644 +--- a/fs/squashfs/squashfs.h ++++ b/fs/squashfs/squashfs.h +@@ -70,6 +70,10 @@ extern struct inode *squashfs_iget(struct super_block *, long long, + unsigned int); + extern int squashfs_read_inode(struct inode *, long long); + ++/* zlib_wrapper.c */ ++extern int zlib_uncompress(struct squashfs_sb_info *, void **, ++ struct buffer_head **, int, int, int, int, int); ++ + /* + * Inodes and files operations + */ +diff --git a/fs/squashfs/zlib_wrapper.c b/fs/squashfs/zlib_wrapper.c +new file mode 100644 +index 0000000..486a2a7 +--- /dev/null ++++ b/fs/squashfs/zlib_wrapper.c +@@ -0,0 +1,109 @@ ++/* ++ * 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. ++ * ++ * zlib_wrapper.c ++ */ ++ ++ ++#include <linux/mutex.h> ++#include <linux/buffer_head.h> ++#include <linux/zlib.h> ++ ++#include "squashfs_fs.h" ++#include "squashfs_fs_sb.h" ++#include "squashfs_fs_i.h" ++#include "squashfs.h" ++ ++int zlib_uncompress(struct squashfs_sb_info *msblk, void **buffer, ++ struct buffer_head **bh, int b, int offset, int length, int srclength, ++ int pages) ++{ ++ int zlib_err = 0, zlib_init = 0; ++ int avail, bytes, k = 0, page = 0; ++ ++ mutex_lock(&msblk->read_data_mutex); ++ ++ msblk->stream.avail_out = 0; ++ msblk->stream.avail_in = 0; ++ ++ bytes = length; ++ do { ++ if (msblk->stream.avail_in == 0 && k < b) { ++ avail = min(bytes, msblk->devblksize - offset); ++ bytes -= avail; ++ wait_on_buffer(bh[k]); ++ if (!buffer_uptodate(bh[k])) ++ goto release_mutex; ++ ++ if (avail == 0) { ++ offset = 0; ++ put_bh(bh[k++]); ++ continue; ++ } ++ ++ msblk->stream.next_in = bh[k]->b_data + offset; ++ msblk->stream.avail_in = avail; ++ offset = 0; ++ } ++ ++ if (msblk->stream.avail_out == 0 && page < pages) { ++ msblk->stream.next_out = buffer[page++]; ++ msblk->stream.avail_out = PAGE_CACHE_SIZE; ++ } ++ ++ if (!zlib_init) { ++ zlib_err = zlib_inflateInit(&msblk->stream); ++ if (zlib_err != Z_OK) { ++ ERROR("zlib_inflateInit returned unexpected " ++ "result 0x%x, srclength %d\n", ++ zlib_err, srclength); ++ goto release_mutex; ++ } ++ zlib_init = 1; ++ } ++ ++ zlib_err = zlib_inflate(&msblk->stream, Z_SYNC_FLUSH); ++ ++ if (msblk->stream.avail_in == 0 && k < b) ++ put_bh(bh[k++]); ++ } while (zlib_err == Z_OK); ++ ++ if (zlib_err != Z_STREAM_END) { ++ ERROR("zlib_inflate error, data probably corrupt\n"); ++ goto release_mutex; ++ } ++ ++ zlib_err = zlib_inflateEnd(&msblk->stream); ++ if (zlib_err != Z_OK) { ++ ERROR("zlib_inflate error, data probably corrupt\n"); ++ goto release_mutex; ++ } ++ ++ mutex_unlock(&msblk->read_data_mutex); ++ return msblk->stream.total_out; ++ ++release_mutex: ++ mutex_unlock(&msblk->read_data_mutex); ++ ++ for (; k < b; k++) ++ put_bh(bh[k]); ++ ++ return -EIO; ++} +-- +1.5.2.5 + diff --git a/recipes/linux/linux-2.6.31/0002-Squashfs-Factor-out-remaining-zlib-dependencies-int.patch b/recipes/linux/linux-2.6.31/0002-Squashfs-Factor-out-remaining-zlib-dependencies-int.patch new file mode 100644 index 0000000000..19e18ae461 --- /dev/null +++ b/recipes/linux/linux-2.6.31/0002-Squashfs-Factor-out-remaining-zlib-dependencies-int.patch @@ -0,0 +1,348 @@ +From 37c44e85fd49676ec15ccaeea065662c1fbcda7d Mon Sep 17 00:00:00 2001 +From: Phillip Lougher <phillip@lougher.demon.co.uk> +Date: Wed, 23 Sep 2009 19:04:49 +0100 +Subject: [PATCH] Squashfs: Factor out remaining zlib dependencies into separate wrapper file + +Move zlib buffer init/destroy code into separate wrapper file. Also +make zlib z_stream field a void * removing the need to include zlib.h +for most files. + +Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk> +--- + fs/squashfs/block.c | 1 - + fs/squashfs/cache.c | 1 - + fs/squashfs/dir.c | 1 - + fs/squashfs/export.c | 1 - + fs/squashfs/file.c | 1 - + fs/squashfs/fragment.c | 1 - + fs/squashfs/id.c | 1 - + fs/squashfs/inode.c | 1 - + fs/squashfs/namei.c | 1 - + fs/squashfs/squashfs.h | 2 + + fs/squashfs/squashfs_fs_sb.h | 2 +- + fs/squashfs/super.c | 14 +++------ + fs/squashfs/symlink.c | 1 - + fs/squashfs/zlib_wrapper.c | 56 ++++++++++++++++++++++++++++++++--------- + 14 files changed, 51 insertions(+), 33 deletions(-) + +diff --git a/fs/squashfs/block.c b/fs/squashfs/block.c +index 5cd3934..baf7624 100644 +--- a/fs/squashfs/block.c ++++ b/fs/squashfs/block.c +@@ -31,7 +31,6 @@ + #include <linux/slab.h> + #include <linux/string.h> + #include <linux/buffer_head.h> +-#include <linux/zlib.h> + + #include "squashfs_fs.h" + #include "squashfs_fs_sb.h" +diff --git a/fs/squashfs/cache.c b/fs/squashfs/cache.c +index 40c98fa..57314be 100644 +--- a/fs/squashfs/cache.c ++++ b/fs/squashfs/cache.c +@@ -51,7 +51,6 @@ + #include <linux/sched.h> + #include <linux/spinlock.h> + #include <linux/wait.h> +-#include <linux/zlib.h> + #include <linux/pagemap.h> + + #include "squashfs_fs.h" +diff --git a/fs/squashfs/dir.c b/fs/squashfs/dir.c +index 566b0ea..12b933a 100644 +--- a/fs/squashfs/dir.c ++++ b/fs/squashfs/dir.c +@@ -30,7 +30,6 @@ + #include <linux/fs.h> + #include <linux/vfs.h> + #include <linux/slab.h> +-#include <linux/zlib.h> + + #include "squashfs_fs.h" + #include "squashfs_fs_sb.h" +diff --git a/fs/squashfs/export.c b/fs/squashfs/export.c +index 2b1b8fe..7f93d5a 100644 +--- a/fs/squashfs/export.c ++++ b/fs/squashfs/export.c +@@ -39,7 +39,6 @@ + #include <linux/vfs.h> + #include <linux/dcache.h> + #include <linux/exportfs.h> +-#include <linux/zlib.h> + #include <linux/slab.h> + + #include "squashfs_fs.h" +diff --git a/fs/squashfs/file.c b/fs/squashfs/file.c +index 717767d..a25c506 100644 +--- a/fs/squashfs/file.c ++++ b/fs/squashfs/file.c +@@ -47,7 +47,6 @@ + #include <linux/string.h> + #include <linux/pagemap.h> + #include <linux/mutex.h> +-#include <linux/zlib.h> + + #include "squashfs_fs.h" + #include "squashfs_fs_sb.h" +diff --git a/fs/squashfs/fragment.c b/fs/squashfs/fragment.c +index b5a2c15..7c90bbd 100644 +--- a/fs/squashfs/fragment.c ++++ b/fs/squashfs/fragment.c +@@ -36,7 +36,6 @@ + #include <linux/fs.h> + #include <linux/vfs.h> + #include <linux/slab.h> +-#include <linux/zlib.h> + + #include "squashfs_fs.h" + #include "squashfs_fs_sb.h" +diff --git a/fs/squashfs/id.c b/fs/squashfs/id.c +index 3795b83..b7f64bc 100644 +--- a/fs/squashfs/id.c ++++ b/fs/squashfs/id.c +@@ -34,7 +34,6 @@ + #include <linux/fs.h> + #include <linux/vfs.h> + #include <linux/slab.h> +-#include <linux/zlib.h> + + #include "squashfs_fs.h" + #include "squashfs_fs_sb.h" +diff --git a/fs/squashfs/inode.c b/fs/squashfs/inode.c +index 9101dbd..49daaf6 100644 +--- a/fs/squashfs/inode.c ++++ b/fs/squashfs/inode.c +@@ -40,7 +40,6 @@ + + #include <linux/fs.h> + #include <linux/vfs.h> +-#include <linux/zlib.h> + + #include "squashfs_fs.h" + #include "squashfs_fs_sb.h" +diff --git a/fs/squashfs/namei.c b/fs/squashfs/namei.c +index 9e39865..5266bd8 100644 +--- a/fs/squashfs/namei.c ++++ b/fs/squashfs/namei.c +@@ -57,7 +57,6 @@ + #include <linux/slab.h> + #include <linux/string.h> + #include <linux/dcache.h> +-#include <linux/zlib.h> + + #include "squashfs_fs.h" + #include "squashfs_fs_sb.h" +diff --git a/fs/squashfs/squashfs.h b/fs/squashfs/squashfs.h +index 988bdce..b3eaf87 100644 +--- a/fs/squashfs/squashfs.h ++++ b/fs/squashfs/squashfs.h +@@ -71,6 +71,8 @@ extern struct inode *squashfs_iget(struct super_block *, long long, + 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); + +diff --git a/fs/squashfs/squashfs_fs_sb.h b/fs/squashfs/squashfs_fs_sb.h +index c8c6561..23a67fa 100644 +--- a/fs/squashfs/squashfs_fs_sb.h ++++ b/fs/squashfs/squashfs_fs_sb.h +@@ -64,7 +64,7 @@ struct squashfs_sb_info { + struct mutex read_data_mutex; + struct mutex meta_index_mutex; + struct meta_index *meta_index; +- z_stream stream; ++ void *stream; + __le64 *inode_lookup_table; + u64 inode_table; + u64 directory_table; +diff --git a/fs/squashfs/super.c b/fs/squashfs/super.c +index 6c197ef..6c3429b 100644 +--- a/fs/squashfs/super.c ++++ b/fs/squashfs/super.c +@@ -35,7 +35,6 @@ + #include <linux/pagemap.h> + #include <linux/init.h> + #include <linux/module.h> +-#include <linux/zlib.h> + #include <linux/magic.h> + + #include "squashfs_fs.h" +@@ -87,12 +86,9 @@ static int squashfs_fill_super(struct super_block *sb, void *data, int silent) + } + msblk = sb->s_fs_info; + +- msblk->stream.workspace = kmalloc(zlib_inflate_workspacesize(), +- GFP_KERNEL); +- if (msblk->stream.workspace == NULL) { +- ERROR("Failed to allocate zlib workspace\n"); ++ msblk->stream = zlib_init(); ++ if (msblk->stream == NULL) + goto failure; +- } + + sblk = kzalloc(sizeof(*sblk), GFP_KERNEL); + if (sblk == NULL) { +@@ -292,17 +288,17 @@ failed_mount: + squashfs_cache_delete(msblk->block_cache); + squashfs_cache_delete(msblk->fragment_cache); + squashfs_cache_delete(msblk->read_page); ++ zlib_free(msblk->stream); + kfree(msblk->inode_lookup_table); + kfree(msblk->fragment_index); + kfree(msblk->id_table); +- kfree(msblk->stream.workspace); + kfree(sb->s_fs_info); + sb->s_fs_info = NULL; + kfree(sblk); + return err; + + failure: +- kfree(msblk->stream.workspace); ++ zlib_free(msblk->stream); + kfree(sb->s_fs_info); + sb->s_fs_info = NULL; + return -ENOMEM; +@@ -346,10 +342,10 @@ static void squashfs_put_super(struct super_block *sb) + squashfs_cache_delete(sbi->block_cache); + squashfs_cache_delete(sbi->fragment_cache); + squashfs_cache_delete(sbi->read_page); ++ zlib_free(sbi->stream); + kfree(sbi->id_table); + kfree(sbi->fragment_index); + kfree(sbi->meta_index); +- kfree(sbi->stream.workspace); + kfree(sb->s_fs_info); + sb->s_fs_info = NULL; + } +diff --git a/fs/squashfs/symlink.c b/fs/squashfs/symlink.c +index 83d8788..e80be20 100644 +--- a/fs/squashfs/symlink.c ++++ b/fs/squashfs/symlink.c +@@ -36,7 +36,6 @@ + #include <linux/slab.h> + #include <linux/string.h> + #include <linux/pagemap.h> +-#include <linux/zlib.h> + + #include "squashfs_fs.h" + #include "squashfs_fs_sb.h" +diff --git a/fs/squashfs/zlib_wrapper.c b/fs/squashfs/zlib_wrapper.c +index 486a2a7..8ebbbc7 100644 +--- a/fs/squashfs/zlib_wrapper.c ++++ b/fs/squashfs/zlib_wrapper.c +@@ -31,21 +31,51 @@ + #include "squashfs_fs_i.h" + #include "squashfs.h" + ++void *zlib_init() ++{ ++ z_stream *stream = kmalloc(sizeof(z_stream), GFP_KERNEL); ++ if (stream == NULL) ++ goto failed; ++ stream->workspace = kmalloc(zlib_inflate_workspacesize(), ++ GFP_KERNEL); ++ if (stream->workspace == NULL) ++ goto failed; ++ ++ return stream; ++ ++failed: ++ ERROR("Failed to allocate zlib workspace\n"); ++ kfree(stream); ++ return NULL; ++} ++ ++ ++void zlib_free(void *strm) ++{ ++ z_stream *stream = strm; ++ ++ if (stream) ++ kfree(stream->workspace); ++ kfree(stream); ++} ++ ++ + int zlib_uncompress(struct squashfs_sb_info *msblk, void **buffer, + struct buffer_head **bh, int b, int offset, int length, int srclength, + int pages) + { + int zlib_err = 0, zlib_init = 0; + int avail, bytes, k = 0, page = 0; ++ z_stream *stream = msblk->stream; + + mutex_lock(&msblk->read_data_mutex); + +- msblk->stream.avail_out = 0; +- msblk->stream.avail_in = 0; ++ stream->avail_out = 0; ++ stream->avail_in = 0; + + bytes = length; + do { +- if (msblk->stream.avail_in == 0 && k < b) { ++ if (stream->avail_in == 0 && k < b) { + avail = min(bytes, msblk->devblksize - offset); + bytes -= avail; + wait_on_buffer(bh[k]); +@@ -58,18 +88,18 @@ int zlib_uncompress(struct squashfs_sb_info *msblk, void **buffer, + continue; + } + +- msblk->stream.next_in = bh[k]->b_data + offset; +- msblk->stream.avail_in = avail; ++ stream->next_in = bh[k]->b_data + offset; ++ stream->avail_in = avail; + offset = 0; + } + +- if (msblk->stream.avail_out == 0 && page < pages) { +- msblk->stream.next_out = buffer[page++]; +- msblk->stream.avail_out = PAGE_CACHE_SIZE; ++ if (stream->avail_out == 0 && page < pages) { ++ stream->next_out = buffer[page++]; ++ stream->avail_out = PAGE_CACHE_SIZE; + } + + if (!zlib_init) { +- zlib_err = zlib_inflateInit(&msblk->stream); ++ zlib_err = zlib_inflateInit(stream); + if (zlib_err != Z_OK) { + ERROR("zlib_inflateInit returned unexpected " + "result 0x%x, srclength %d\n", +@@ -79,9 +109,9 @@ int zlib_uncompress(struct squashfs_sb_info *msblk, void **buffer, + zlib_init = 1; + } + +- zlib_err = zlib_inflate(&msblk->stream, Z_SYNC_FLUSH); ++ zlib_err = zlib_inflate(stream, Z_SYNC_FLUSH); + +- if (msblk->stream.avail_in == 0 && k < b) ++ if (stream->avail_in == 0 && k < b) + put_bh(bh[k++]); + } while (zlib_err == Z_OK); + +@@ -90,14 +120,14 @@ int zlib_uncompress(struct squashfs_sb_info *msblk, void **buffer, + goto release_mutex; + } + +- zlib_err = zlib_inflateEnd(&msblk->stream); ++ zlib_err = zlib_inflateEnd(stream); + if (zlib_err != Z_OK) { + ERROR("zlib_inflate error, data probably corrupt\n"); + goto release_mutex; + } + + mutex_unlock(&msblk->read_data_mutex); +- return msblk->stream.total_out; ++ return stream->total_out; + + release_mutex: + mutex_unlock(&msblk->read_data_mutex); +-- +1.5.2.5 + diff --git a/recipes/linux/linux-2.6.31/0003-Squashfs-add-a-decompressor-framework.patch b/recipes/linux/linux-2.6.31/0003-Squashfs-add-a-decompressor-framework.patch new file mode 100644 index 0000000000..b83182536d --- /dev/null +++ b/recipes/linux/linux-2.6.31/0003-Squashfs-add-a-decompressor-framework.patch @@ -0,0 +1,442 @@ +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(-) + +Index: git/fs/squashfs/Makefile +=================================================================== +--- git.orig/fs/squashfs/Makefile 2009-10-26 12:19:33.000000000 +0100 ++++ git/fs/squashfs/Makefile 2009-10-26 14:25:41.000000000 +0100 +@@ -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 +Index: git/fs/squashfs/block.c +=================================================================== +--- git.orig/fs/squashfs/block.c 2009-10-26 12:19:33.000000000 +0100 ++++ git/fs/squashfs/block.c 2009-10-26 14:25:41.000000000 +0100 +@@ -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 @@ + } + + 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 { +Index: git/fs/squashfs/decompressor.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ git/fs/squashfs/decompressor.c 2009-10-26 14:25:41.000000000 +0100 +@@ -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]; ++} +Index: git/fs/squashfs/decompressor.h +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ git/fs/squashfs/decompressor.h 2009-10-26 14:25:41.000000000 +0100 +@@ -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 +Index: git/fs/squashfs/squashfs.h +=================================================================== +--- git.orig/fs/squashfs/squashfs.h 2009-10-26 12:19:33.000000000 +0100 ++++ git/fs/squashfs/squashfs.h 2009-10-26 14:25:41.000000000 +0100 +@@ -51,6 +51,9 @@ + 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 @@ + 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 @@ + + /* symlink.c */ + extern const struct address_space_operations squashfs_symlink_aops; ++ ++/* zlib_wrapper.c */ ++extern const struct squashfs_decompressor squashfs_zlib_comp_ops; +Index: git/fs/squashfs/squashfs_fs_sb.h +=================================================================== +--- git.orig/fs/squashfs/squashfs_fs_sb.h 2009-10-26 12:19:33.000000000 +0100 ++++ git/fs/squashfs/squashfs_fs_sb.h 2009-10-26 14:25:41.000000000 +0100 +@@ -52,25 +52,26 @@ + }; + + 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 +Index: git/fs/squashfs/super.c +=================================================================== +--- git.orig/fs/squashfs/super.c 2009-10-26 12:19:33.000000000 +0100 ++++ git/fs/squashfs/super.c 2009-10-26 14:31:09.000000000 +0100 +@@ -41,27 +41,37 @@ + #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 +96,6 @@ + } + 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 +122,25 @@ + 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 +207,10 @@ + + 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 +298,7 @@ + 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 +308,6 @@ + return err; + + failure: +- zlib_free(msblk->stream); + kfree(sb->s_fs_info); + sb->s_fs_info = NULL; + return -ENOMEM; +@@ -342,7 +351,7 @@ + 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); +Index: git/fs/squashfs/zlib_wrapper.c +=================================================================== +--- git.orig/fs/squashfs/zlib_wrapper.c 2009-10-26 12:19:33.000000000 +0100 ++++ git/fs/squashfs/zlib_wrapper.c 2009-10-26 14:25:41.000000000 +0100 +@@ -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 @@ + } + + +-void zlib_free(void *strm) ++static void zlib_free(void *strm) + { + z_stream *stream = strm; + +@@ -60,7 +61,7 @@ + } + + +-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 @@ + + 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 ++}; ++ diff --git a/recipes/linux/linux-2.6.31/0004-Squashfs-add-decompressor-entries-for-lzma-and-lzo.patch b/recipes/linux/linux-2.6.31/0004-Squashfs-add-decompressor-entries-for-lzma-and-lzo.patch new file mode 100644 index 0000000000..f7d32e36cc --- /dev/null +++ b/recipes/linux/linux-2.6.31/0004-Squashfs-add-decompressor-entries-for-lzma-and-lzo.patch @@ -0,0 +1,61 @@ +From 1885ca0a1973944684f252094a703b7c80dfc974 Mon Sep 17 00:00:00 2001 +From: Phillip Lougher <phillip@lougher.demon.co.uk> +Date: Wed, 14 Oct 2009 03:58:11 +0100 +Subject: [PATCH] Squashfs: add decompressor entries for lzma and lzo + +Add knowledge of lzma/lzo compression formats to the decompressor +framework. For now these are added as unsupported. Without +these entries lzma/lzo compressed filesystems will be flagged as +having unknown compression which is undesirable. + +Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk> +--- + fs/squashfs/decompressor.c | 10 ++++++++++ + fs/squashfs/squashfs_fs.h | 4 +++- + 2 files changed, 13 insertions(+), 1 deletions(-) + +diff --git a/fs/squashfs/decompressor.c b/fs/squashfs/decompressor.c +index 0072ccd..157478d 100644 +--- a/fs/squashfs/decompressor.c ++++ b/fs/squashfs/decompressor.c +@@ -36,12 +36,22 @@ + * Squashfs, allowing multiple decompressors to be easily supported + */ + ++static const struct squashfs_decompressor squashfs_lzma_unsupported_comp_ops = { ++ NULL, NULL, NULL, LZMA_COMPRESSION, "lzma", 0 ++}; ++ ++static const struct squashfs_decompressor squashfs_lzo_unsupported_comp_ops = { ++ NULL, NULL, NULL, LZO_COMPRESSION, "lzo", 0 ++}; ++ + 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_lzma_unsupported_comp_ops, ++ &squashfs_lzo_unsupported_comp_ops, + &squashfs_unknown_comp_ops + }; + +diff --git a/fs/squashfs/squashfs_fs.h b/fs/squashfs/squashfs_fs.h +index 283daaf..36e1604 100644 +--- a/fs/squashfs/squashfs_fs.h ++++ b/fs/squashfs/squashfs_fs.h +@@ -211,7 +211,9 @@ struct meta_index { + /* + * definitions for structures on disk + */ +-#define ZLIB_COMPRESSION 1 ++#define ZLIB_COMPRESSION 1 ++#define LZMA_COMPRESSION 2 ++#define LZO_COMPRESSION 3 + + struct squashfs_super_block { + __le32 s_magic; +-- +1.5.2.5 + diff --git a/recipes/linux/linux-2.6.31/0005-Squashfs-add-an-extra-parameter-to-the-decompressor.patch b/recipes/linux/linux-2.6.31/0005-Squashfs-add-an-extra-parameter-to-the-decompressor.patch new file mode 100644 index 0000000000..0082efdf82 --- /dev/null +++ b/recipes/linux/linux-2.6.31/0005-Squashfs-add-an-extra-parameter-to-the-decompressor.patch @@ -0,0 +1,49 @@ +From 5f393ede3ddb5dd4cc2a9f243182fac45f1ce10b Mon Sep 17 00:00:00 2001 +From: Phillip Lougher <phillip@lougher.demon.co.uk> +Date: Wed, 14 Oct 2009 04:07:54 +0100 +Subject: [PATCH] Squashfs: add an extra parameter to the decompressor init function + +Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk> +--- + fs/squashfs/decompressor.h | 4 ++-- + fs/squashfs/zlib_wrapper.c | 2 +- + 2 files changed, 3 insertions(+), 3 deletions(-) + +diff --git a/fs/squashfs/decompressor.h b/fs/squashfs/decompressor.h +index 778760c..7425f80 100644 +--- a/fs/squashfs/decompressor.h ++++ b/fs/squashfs/decompressor.h +@@ -24,7 +24,7 @@ + */ + + struct squashfs_decompressor { +- void *(*init)(void); ++ void *(*init)(struct squashfs_sb_info *); + void (*free)(void *); + int (*decompress)(struct squashfs_sb_info *, void **, + struct buffer_head **, int, int, int, int, int); +@@ -35,7 +35,7 @@ struct squashfs_decompressor { + + static inline void *squashfs_decompressor_init(struct squashfs_sb_info *msblk) + { +- return msblk->decompressor->init(); ++ return msblk->decompressor->init(msblk); + } + + static inline void squashfs_decompressor_free(struct squashfs_sb_info *msblk, +diff --git a/fs/squashfs/zlib_wrapper.c b/fs/squashfs/zlib_wrapper.c +index 381768c..4dd70e0 100644 +--- a/fs/squashfs/zlib_wrapper.c ++++ b/fs/squashfs/zlib_wrapper.c +@@ -32,7 +32,7 @@ + #include "squashfs.h" + #include "decompressor.h" + +-static void *zlib_init(void) ++static void *zlib_init(struct squashfs_sb_info *dummy) + { + z_stream *stream = kmalloc(sizeof(z_stream), GFP_KERNEL); + if (stream == NULL) +-- +1.5.2.5 + diff --git a/recipes/linux/linux-2.6.31/0006-Squashfs-add-LZMA-compression.patch b/recipes/linux/linux-2.6.31/0006-Squashfs-add-LZMA-compression.patch new file mode 100644 index 0000000000..46f3ada441 --- /dev/null +++ b/recipes/linux/linux-2.6.31/0006-Squashfs-add-LZMA-compression.patch @@ -0,0 +1,229 @@ +From f49e1efdd179d54e814ff2a8e8f469496583062c Mon Sep 17 00:00:00 2001 +From: Phillip Lougher <phillip@lougher.demon.co.uk> +Date: Tue, 20 Oct 2009 10:54:36 +0100 +Subject: [PATCH] Squashfs: add LZMA compression + +Add support for LZMA compressed filesystems. This is an initial +implementation. + +Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk> +--- + fs/squashfs/Kconfig | 5 ++ + fs/squashfs/Makefile | 1 + + fs/squashfs/decompressor.c | 4 + + fs/squashfs/lzma_wrapper.c | 151 ++++++++++++++++++++++++++++++++++++++++++++ + fs/squashfs/squashfs.h | 3 + + 5 files changed, 164 insertions(+), 0 deletions(-) + +diff --git a/fs/squashfs/Kconfig b/fs/squashfs/Kconfig +index 25a00d1..0294aa2 100644 +--- a/fs/squashfs/Kconfig ++++ b/fs/squashfs/Kconfig +@@ -26,6 +26,11 @@ config SQUASHFS + + If unsure, say N. + ++config SQUASHFS_LZMA ++ bool "Include support for LZMA compressed file systems" ++ depends on SQUASHFS ++ select DECOMPRESS_LZMA ++ + config SQUASHFS_EMBEDDED + + bool "Additional option for memory-constrained systems" +diff --git a/fs/squashfs/Makefile b/fs/squashfs/Makefile +index df8a19e..45aaefd 100644 +--- a/fs/squashfs/Makefile ++++ b/fs/squashfs/Makefile +@@ -5,3 +5,4 @@ + obj-$(CONFIG_SQUASHFS) += squashfs.o + squashfs-y += block.o cache.o dir.o export.o file.o fragment.o id.o inode.o + squashfs-y += namei.o super.o symlink.o zlib_wrapper.o decompressor.o ++squashfs-$(CONFIG_SQUASHFS_LZMA) += lzma_wrapper.o +diff --git a/fs/squashfs/decompressor.c b/fs/squashfs/decompressor.c +index 157478d..0b6ad9b 100644 +--- a/fs/squashfs/decompressor.c ++++ b/fs/squashfs/decompressor.c +@@ -50,7 +50,11 @@ static const struct squashfs_decompressor squashfs_unknown_comp_ops = { + + static const struct squashfs_decompressor *decompressor[] = { + &squashfs_zlib_comp_ops, ++#ifdef CONFIG_SQUASHFS_LZMA ++ &squashfs_lzma_comp_ops, ++#else + &squashfs_lzma_unsupported_comp_ops, ++#endif + &squashfs_lzo_unsupported_comp_ops, + &squashfs_unknown_comp_ops + }; +diff --git a/fs/squashfs/lzma_wrapper.c b/fs/squashfs/lzma_wrapper.c +new file mode 100644 +index 0000000..9fa617d +--- /dev/null ++++ b/fs/squashfs/lzma_wrapper.c +@@ -0,0 +1,151 @@ ++/* ++ * 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. ++ * ++ * lzma_wrapper.c ++ */ ++ ++#include <asm/unaligned.h> ++#include <linux/buffer_head.h> ++#include <linux/mutex.h> ++#include <linux/vmalloc.h> ++#include <linux/decompress/unlzma.h> ++ ++#include "squashfs_fs.h" ++#include "squashfs_fs_sb.h" ++#include "squashfs_fs_i.h" ++#include "squashfs.h" ++#include "decompressor.h" ++ ++struct squashfs_lzma { ++ void *input; ++ void *output; ++}; ++ ++/* decompress_unlzma.c is currently non re-entrant... */ ++DEFINE_MUTEX(lzma_mutex); ++ ++/* decompress_unlzma.c doesn't provide any context in its callbacks... */ ++static int lzma_error; ++ ++static void error(char *m) ++{ ++ ERROR("unlzma error: %s\n", m); ++ lzma_error = 1; ++} ++ ++ ++static void *lzma_init(struct squashfs_sb_info *msblk) ++{ ++ struct squashfs_lzma *stream = kzalloc(sizeof(*stream), GFP_KERNEL); ++ if (stream == NULL) ++ goto failed; ++ stream->input = vmalloc(msblk->block_size); ++ if (stream->input == NULL) ++ goto failed; ++ stream->output = vmalloc(msblk->block_size); ++ if (stream->output == NULL) ++ goto failed2; ++ ++ return stream; ++ ++failed2: ++ vfree(stream->input); ++failed: ++ ERROR("failed to allocate lzma workspace\n"); ++ kfree(stream); ++ return NULL; ++} ++ ++ ++static void lzma_free(void *strm) ++{ ++ struct squashfs_lzma *stream = strm; ++ ++ if (stream) { ++ vfree(stream->input); ++ vfree(stream->output); ++ } ++ kfree(stream); ++} ++ ++ ++static int lzma_uncompress(struct squashfs_sb_info *msblk, void **buffer, ++ struct buffer_head **bh, int b, int offset, int length, int srclength, ++ int pages) ++{ ++ struct squashfs_lzma *stream = msblk->stream; ++ void *buff = stream->input; ++ int avail, i, bytes = length, res; ++ ++ mutex_lock(&lzma_mutex); ++ ++ for (i = 0; i < b; i++) { ++ wait_on_buffer(bh[i]); ++ if (!buffer_uptodate(bh[i])) ++ goto block_release; ++ ++ avail = min(bytes, msblk->devblksize - offset); ++ memcpy(buff, bh[i]->b_data + offset, avail); ++ buff += avail; ++ bytes -= avail; ++ offset = 0; ++ put_bh(bh[i]); ++ } ++ ++ lzma_error = 0; ++ res = unlzma(stream->input, length, NULL, NULL, stream->output, NULL, ++ error); ++ if (res || lzma_error) ++ goto failed; ++ ++ /* uncompressed size is stored in the LZMA header (5 byte offset) */ ++ res = bytes = get_unaligned_le32(stream->input + 5); ++ for (i = 0, buff = stream->output; bytes && i < pages; i++) { ++ avail = min_t(int, bytes, PAGE_CACHE_SIZE); ++ memcpy(buffer[i], buff, avail); ++ buff += avail; ++ bytes -= avail; ++ } ++ if (bytes) ++ goto failed; ++ ++ mutex_unlock(&lzma_mutex); ++ return res; ++ ++block_release: ++ for (; i < b; i++) ++ put_bh(bh[i]); ++ ++failed: ++ mutex_unlock(&lzma_mutex); ++ ++ ERROR("lzma decompression failed, data probably corrupt\n"); ++ return -EIO; ++} ++ ++const struct squashfs_decompressor squashfs_lzma_comp_ops = { ++ .init = lzma_init, ++ .free = lzma_free, ++ .decompress = lzma_uncompress, ++ .id = LZMA_COMPRESSION, ++ .name = "lzma", ++ .supported = 1 ++}; ++ +diff --git a/fs/squashfs/squashfs.h b/fs/squashfs/squashfs.h +index fe2587a..d094886 100644 +--- a/fs/squashfs/squashfs.h ++++ b/fs/squashfs/squashfs.h +@@ -94,3 +94,6 @@ extern const struct address_space_operations squashfs_symlink_aops; + + /* zlib_wrapper.c */ + extern const struct squashfs_decompressor squashfs_zlib_comp_ops; ++ ++/* lzma wrapper.c */ ++extern const struct squashfs_decompressor squashfs_lzma_comp_ops; +-- +1.5.2.5 + diff --git a/recipes/linux/linux-2.6.31/0007-Squashfs-Make-unlzma-available-to-non-initramfs-ini.patch b/recipes/linux/linux-2.6.31/0007-Squashfs-Make-unlzma-available-to-non-initramfs-ini.patch new file mode 100644 index 0000000000..2d6fc3af7e --- /dev/null +++ b/recipes/linux/linux-2.6.31/0007-Squashfs-Make-unlzma-available-to-non-initramfs-ini.patch @@ -0,0 +1,186 @@ +From fdf23ed283bc6ef5c25076ce2065f892120ff556 Mon Sep 17 00:00:00 2001 +From: Phillip Lougher <phillip@lougher.demon.co.uk> +Date: Thu, 22 Oct 2009 04:57:38 +0100 +Subject: [PATCH] Squashfs: Make unlzma available to non initramfs/initrd code + +Add a config option DECOMPRESS_LZMA_NEEDED which allows subsystems to +specify they need the unlzma code. Normally decompress_unlzma.c is +compiled with __init and unlzma is not exported to modules. + +Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk> +--- + fs/squashfs/Kconfig | 1 + + include/linux/decompress/bunzip2_mm.h | 12 ++++++++++++ + include/linux/decompress/inflate_mm.h | 12 ++++++++++++ + include/linux/decompress/mm.h | 3 --- + include/linux/decompress/unlzma_mm.h | 20 ++++++++++++++++++++ + lib/Kconfig | 3 +++ + lib/decompress_bunzip2.c | 1 + + lib/decompress_inflate.c | 1 + + lib/decompress_unlzma.c | 5 ++++- + 9 files changed, 54 insertions(+), 4 deletions(-) + +diff --git a/fs/squashfs/Kconfig b/fs/squashfs/Kconfig +index 0294aa2..7ec5d7e 100644 +--- a/fs/squashfs/Kconfig ++++ b/fs/squashfs/Kconfig +@@ -30,6 +30,7 @@ config SQUASHFS_LZMA + bool "Include support for LZMA compressed file systems" + depends on SQUASHFS + select DECOMPRESS_LZMA ++ select DECOMPRESS_LZMA_NEEDED + + config SQUASHFS_EMBEDDED + +diff --git a/include/linux/decompress/bunzip2_mm.h b/include/linux/decompress/bunzip2_mm.h +new file mode 100644 +index 0000000..cac6fef +--- /dev/null ++++ b/include/linux/decompress/bunzip2_mm.h +@@ -0,0 +1,12 @@ ++#ifndef BUNZIP2_MM_H ++#define BUNZIP2_MM_H ++ ++#ifdef STATIC ++/* Code active when included from pre-boot environment: */ ++#define INIT ++#else ++/* Compile for initramfs/initrd code only */ ++#define INIT __init ++#endif ++ ++#endif +diff --git a/include/linux/decompress/inflate_mm.h b/include/linux/decompress/inflate_mm.h +new file mode 100644 +index 0000000..ca4a2ae +--- /dev/null ++++ b/include/linux/decompress/inflate_mm.h +@@ -0,0 +1,12 @@ ++#ifndef INFLATE_MM_H ++#define INFLATE_MM_H ++ ++#ifdef STATIC ++/* Code active when included from pre-boot environment: */ ++#define INIT ++#else ++/* Compile for initramfs/initrd code only */ ++#define INIT __init ++#endif ++ ++#endif +diff --git a/include/linux/decompress/mm.h b/include/linux/decompress/mm.h +index 12ff8c3..80f5ba4 100644 +--- a/include/linux/decompress/mm.h ++++ b/include/linux/decompress/mm.h +@@ -53,8 +53,6 @@ static void free(void *where) + + #define set_error_fn(x) + +-#define INIT +- + #else /* STATIC */ + + /* Code active when compiled standalone for use when loading ramdisk: */ +@@ -77,7 +75,6 @@ static void free(void *where) + static void(*error)(char *m); + #define set_error_fn(x) error = x; + +-#define INIT __init + #define STATIC + + #include <linux/init.h> +diff --git a/include/linux/decompress/unlzma_mm.h b/include/linux/decompress/unlzma_mm.h +new file mode 100644 +index 0000000..859287e +--- /dev/null ++++ b/include/linux/decompress/unlzma_mm.h +@@ -0,0 +1,20 @@ ++#ifndef UNLZMA_MM_H ++#define UNLZMA_MM_H ++ ++#ifdef STATIC ++ ++/* Code active when included from pre-boot environment: */ ++#define INIT ++ ++#elif defined(CONFIG_DECOMPRESS_LZMA_NEEDED) ++ ++/* Make it available to non initramfs/initrd code */ ++#define INIT ++#include <linux/module.h> ++#else ++ ++/* Compile for initramfs/initrd code only */ ++#define INIT __init ++#endif ++ ++#endif +diff --git a/lib/Kconfig b/lib/Kconfig +index bb1326d..25e7f28 100644 +--- a/lib/Kconfig ++++ b/lib/Kconfig +@@ -117,6 +117,9 @@ config DECOMPRESS_BZIP2 + config DECOMPRESS_LZMA + tristate + ++config DECOMPRESS_LZMA_NEEDED ++ boolean ++ + # + # Generic allocator support is selected if needed + # +diff --git a/lib/decompress_bunzip2.c b/lib/decompress_bunzip2.c +index 600f473..6eb6433 100644 +--- a/lib/decompress_bunzip2.c ++++ b/lib/decompress_bunzip2.c +@@ -52,6 +52,7 @@ + #include <linux/slab.h> + #endif /* STATIC */ + ++#include <linux/decompress/bunzip2_mm.h> + #include <linux/decompress/mm.h> + + #ifndef INT_MAX +diff --git a/lib/decompress_inflate.c b/lib/decompress_inflate.c +index fc686c7..cb6bcab 100644 +--- a/lib/decompress_inflate.c ++++ b/lib/decompress_inflate.c +@@ -23,6 +23,7 @@ + + #endif /* STATIC */ + ++#include <linux/decompress/inflate_mm.h> + #include <linux/decompress/mm.h> + + #define GZIP_IOBUF_SIZE (16*1024) +diff --git a/lib/decompress_unlzma.c b/lib/decompress_unlzma.c +index ca82fde..b2fd927 100644 +--- a/lib/decompress_unlzma.c ++++ b/lib/decompress_unlzma.c +@@ -36,6 +36,7 @@ + #include <linux/slab.h> + #endif /* STATIC */ + ++#include <linux/decompress/unlzma_mm.h> + #include <linux/decompress/mm.h> + + #define MIN(a, b) (((a) < (b)) ? (a) : (b)) +@@ -531,7 +532,7 @@ static inline void INIT process_bit1(struct writer *wr, struct rc *rc, + + + +-STATIC inline int INIT unlzma(unsigned char *buf, int in_len, ++STATIC int INIT unlzma(unsigned char *buf, int in_len, + int(*fill)(void*, unsigned int), + int(*flush)(void*, unsigned int), + unsigned char *output, +@@ -664,4 +665,6 @@ STATIC int INIT decompress(unsigned char *buf, int in_len, + { + return unlzma(buf, in_len - 4, fill, flush, output, posp, error_fn); + } ++#elif defined(CONFIG_DECOMPRESS_LZMA_NEEDED) ++EXPORT_SYMBOL(unlzma); + #endif +-- +1.5.2.5 + diff --git a/recipes/linux/linux-kirkwood_2.6.31.bb b/recipes/linux/linux-kirkwood_2.6.31.bb index a81fe91dc7..f046feaadd 100644 --- a/recipes/linux/linux-kirkwood_2.6.31.bb +++ b/recipes/linux/linux-kirkwood_2.6.31.bb @@ -9,6 +9,8 @@ COMPATIBLE_MACHINE = "openrd-base" require linux.inc +FILESPATHPKG_prepend = "linux-2.6.31:" + # Change MACHINE_KERNEL_PR in conf/machine/include/kirkwood.inc PV = "2.6.31" @@ -19,8 +21,15 @@ SRC_URI = "git://git.marvell.com/orion.git;protocol=git \ file://defconfig" SRC_URI_append_openrd-base = " file://openrd-base-enable-pcie.patch;patch=1 \ - file://cpuidle-reenable-interrupts.patch;patch=1" - + file://cpuidle-reenable-interrupts.patch;patch=1 \ + file://0001-Squashfs-move-zlib-decompression-wrapper-code-into.patch;patch=1 \ + file://0002-Squashfs-Factor-out-remaining-zlib-dependencies-int.patch;patch=1 \ + file://0003-Squashfs-add-a-decompressor-framework.patch;patch=1 \ + file://0004-Squashfs-add-decompressor-entries-for-lzma-and-lzo.patch;patch=1 \ + file://0005-Squashfs-add-an-extra-parameter-to-the-decompressor.patch;patch=1 \ + file://0006-Squashfs-add-LZMA-compression.patch;patch=1 \ + file://0007-Squashfs-Make-unlzma-available-to-non-initramfs-ini.patch;patch=1 \ + " # update machine types list for ARM architecture, only for machines that need it do_arm_mach_types() { if test ${MACHINE} == openrd-base; then diff --git a/recipes/linux/linux_2.6.31.bb b/recipes/linux/linux_2.6.31.bb index 845909c76c..8cf1a38b70 100644 --- a/recipes/linux/linux_2.6.31.bb +++ b/recipes/linux/linux_2.6.31.bb @@ -1,6 +1,6 @@ require linux.inc -PR = "r5" +PR = "r6" S = "${WORKDIR}/linux-${PV}" @@ -17,6 +17,15 @@ SRC_URI = "${KERNELORG_MIRROR}/pub/linux/kernel/v2.6/linux-${PV}.tar.bz2 \ ${KERNELORG_MIRROR}/pub/linux/kernel/v2.6/patch-${PV}.5.bz2;patch=1 \ file://defconfig" +SRC_URI += "file://0001-Squashfs-move-zlib-decompression-wrapper-code-into.patch;patch=1 \ + file://0002-Squashfs-Factor-out-remaining-zlib-dependencies-int.patch;patch=1 \ + file://0003-Squashfs-add-a-decompressor-framework.patch;patch=1 \ + file://0004-Squashfs-add-decompressor-entries-for-lzma-and-lzo.patch;patch=1 \ + file://0005-Squashfs-add-an-extra-parameter-to-the-decompressor.patch;patch=1 \ + file://0006-Squashfs-add-LZMA-compression.patch;patch=1 \ + file://0007-Squashfs-Make-unlzma-available-to-non-initramfs-ini.patch;patch=1 \ + " + SRC_URI_append_db1200 ="\ http://maxim.org.za/AT91RM9200/2.6/2.6.31-at91.patch.gz;patch=1 \ " |