diff options
Diffstat (limited to 'source/ap/squashfs-tools/0004-unsquashfs-add-support-for-LZMA-magics.patch')
| -rw-r--r-- | source/ap/squashfs-tools/0004-unsquashfs-add-support-for-LZMA-magics.patch | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/source/ap/squashfs-tools/0004-unsquashfs-add-support-for-LZMA-magics.patch b/source/ap/squashfs-tools/0004-unsquashfs-add-support-for-LZMA-magics.patch new file mode 100644 index 00000000..258416bf --- /dev/null +++ b/source/ap/squashfs-tools/0004-unsquashfs-add-support-for-LZMA-magics.patch @@ -0,0 +1,102 @@ +From c2dc60a94b01a1fff4a22db1c0569651afa6c959 Mon Sep 17 00:00:00 2001 +From: Jonas Gorski <jonas.gorski@gmail.com> +Date: Wed, 19 Oct 2011 11:44:57 +0200 +Subject: [PATCH] unsquashfs: add support for LZMA magics +X-Face: z*RaLf`X<@C75u6Ig9}{oW$H;1_\2t5)({*|jhM<pyWR#k60!#=#>/Vb;]yA5<GWI5`6u&+ + ;6b'@y|8w"wB;4/e!7wYYrcqdJFY,~%Gk_4]cq$Ei/7<j&N3ah(m`ku?pX.&+~:_/wC~dwn^)MizBG + !pE^+iDQQ1yC6^,)YDKkxDd!T>\I~93>J<_`<4)A{':UrE + +Some vendor (e.g. Thomson/Technicolor) use a different super block magic +to indicate LZMA compression: + + qshs (0x71736873) - LZMA compression + shsq (0x73687371) - LZMA compression, SWAPPED fields + +Add support for detecting this and enable extraction for filesystems +from those firmwares. + +Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> +Tested-by: Antonio Ospite <ospite@studenti.unina.it> +--- + squashfs-tools/squashfs_fs.h | 6 ++++++ + squashfs-tools/unsquashfs.c | 24 ++++++++++++++++++------ + 2 files changed, 24 insertions(+), 6 deletions(-) + +diff --git a/squashfs-tools/squashfs_fs.h b/squashfs-tools/squashfs_fs.h +index d4fba1b..8462a6b 100644 +--- a/squashfs-tools/squashfs_fs.h ++++ b/squashfs-tools/squashfs_fs.h +@@ -30,6 +30,12 @@ + #define SQUASHFS_MAGIC_SWAP 0x68737173 + #define SQUASHFS_START 0 + ++/* ++ * Squashfs + LZMA ++ */ ++#define SQUASHFS_MAGIC_LZMA 0x71736873 ++#define SQUASHFS_MAGIC_LZMA_SWAP 0x73687371 ++ + /* size of metadata (inode and directory) blocks */ + #define SQUASHFS_METADATA_SIZE 8192 + #define SQUASHFS_METADATA_LOG 13 +diff --git a/squashfs-tools/unsquashfs.c b/squashfs-tools/unsquashfs.c +index 320bead..7869a38 100644 +--- a/squashfs-tools/unsquashfs.c ++++ b/squashfs-tools/unsquashfs.c +@@ -1516,10 +1516,12 @@ int read_super(char *source) + */ + read_fs_bytes(fd, SQUASHFS_START, sizeof(struct squashfs_super_block), + &sBlk_4); +- swap = sBlk_4.s_magic != SQUASHFS_MAGIC; ++ swap = (sBlk_4.s_magic != SQUASHFS_MAGIC && ++ sBlk_4.s_magic != SQUASHFS_MAGIC_LZMA); + SQUASHFS_INSWAP_SUPER_BLOCK(&sBlk_4); + +- if(sBlk_4.s_magic == SQUASHFS_MAGIC && sBlk_4.s_major == 4 && ++ if((sBlk_4.s_magic == SQUASHFS_MAGIC || ++ sBlk_4.s_magic == SQUASHFS_MAGIC_LZMA) && sBlk_4.s_major == 4 && + sBlk_4.s_minor == 0) { + s_ops.squashfs_opendir = squashfs_opendir_4; + s_ops.read_fragment = read_fragment_4; +@@ -1532,7 +1534,11 @@ int read_super(char *source) + /* + * Check the compression type + */ +- comp = lookup_compressor_id(sBlk.s.compression); ++ if (sBlk_4.s_magic == SQUASHFS_MAGIC_LZMA) ++ comp = lookup_compressor("lzma"); ++ else ++ comp = lookup_compressor_id(sBlk.s.compression); ++ + return TRUE; + } + +@@ -1547,8 +1553,10 @@ int read_super(char *source) + * Check it is a SQUASHFS superblock + */ + swap = 0; +- if(sBlk_3.s_magic != SQUASHFS_MAGIC) { +- if(sBlk_3.s_magic == SQUASHFS_MAGIC_SWAP) { ++ if(sBlk_3.s_magic != SQUASHFS_MAGIC && ++ sBlk_3.s_magic != SQUASHFS_MAGIC_LZMA) { ++ if(sBlk_3.s_magic == SQUASHFS_MAGIC_SWAP || ++ sBlk_3.s_magic == SQUASHFS_MAGIC_LZMA_SWAP) { + squashfs_super_block_3 sblk; + ERROR("Reading a different endian SQUASHFS filesystem " + "on %s\n", source); +@@ -1626,7 +1634,11 @@ int read_super(char *source) + /* + * 1.x, 2.x and 3.x filesystems use gzip compression. + */ +- comp = lookup_compressor("gzip"); ++ if (sBlk.s.s_magic == SQUASHFS_MAGIC_LZMA) ++ comp = lookup_compressor("lzma"); ++ else ++ comp = lookup_compressor("gzip"); ++ + return TRUE; + + failed_mount: +-- +1.7.10.4 + |