From dc3256782f88602953676c447b243dedb1be99ad Mon Sep 17 00:00:00 2001 From: Phillip Lougher Date: Wed, 14 Oct 2009 03:58:11 +0100 Subject: 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 --- fs/squashfs/decompressor.c | 10 ++++++++++ fs/squashfs/squashfs_fs.h | 4 +++- 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/fs/squashfs/decompressor.c b/fs/squashfs/decompressor.c index 0072ccdac1e2..157478da6ac9 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 283daafc568e..36e1604ab1c1 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; -- cgit v1.2.2