Commit dc325678 authored by Phillip Lougher's avatar Phillip Lougher
Browse files

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: default avatarPhillip Lougher <phillip@lougher.demon.co.uk>
parent 4c0f0bb2

fs/squashfs/decompressor.c

+10 −0
Original line number Diff line number Diff line
@@ -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

};

fs/squashfs/squashfs_fs.h

+3 −1
Original line number Diff line number Diff line
@@ -212,6 +212,8 @@ struct meta_index { 
 * definitions for structures on disk

 */

#define ZLIB_COMPRESSION	1

#define LZMA_COMPRESSION	2

#define LZO_COMPRESSION		3



struct squashfs_super_block {

	__le32			s_magic;

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