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2009-03-12Squashfs: Valid filesystems are flagged as bad by the corrupted fs patchPhillip Lougher1-17/+4
The corrupted filesystem patch added a check against zlib trying to output too much data in the presence of data corruption. This check triggered if zlib_inflate asked to be called again (Z_OK) with avail_out == 0 and no more output buffers available. This check proves to be rather dumb, as it incorrectly catches the case where zlib has generated all the output, but there are still input bytes to be processed. This patch does a number of things. It removes the original check and replaces it with code to not move to the next output buffer if there are no more output buffers available, relying on zlib to error if it wants an extra output buffer in the case of data corruption. It also replaces the Z_NO_FLUSH flag with the more correct Z_SYNC_FLUSH flag, and makes the error messages more understandable to non-technical users. Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk> Reported-by: Stefan Lippers-Hollmann <s.L-H@gmx.de>
2009-03-05Squashfs: frag_size should be signed, as it can hold an error resultRoel Kluin1-2/+4
Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-03-05Squashfs: Fix oops when reading fsfuzzer corrupted filesystemsPhillip Lougher4-6/+15
This fixes a code regression caused by the recent mainlining changes. The recent code changes call zlib_inflate repeatedly, decompressing into separate 4K buffers, this code didn't check for the possibility that zlib_inflate might ask for too many buffers when decompressing corrupted data. Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-22fs/Kconfig: move squashfs outAlexey Dobriyan1-0/+51
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2009-01-15btrfs & squashfs: Move btrfs and squashfsto's magic number to <linux/magic.h>Qinghuang Feng2-1/+1
Use the standard magic.h for btrfs and squashfs. Signed-off-by: Qinghuang Feng <qhfeng.kernel@gmail.com> Cc: Phillip Lougher <phillip@lougher.demon.co.uk> Cc: Chris Mason <chris.mason@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-05Squashfs: MakefilesPhillip Lougher1-0/+8
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05Squashfs: header filesPhillip Lougher4-0/+592
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05Squashfs: block operationsPhillip Lougher1-0/+274
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05Squashfs: cache operationsPhillip Lougher1-0/+412
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05Squashfs: uid/gid lookup operationsPhillip Lougher1-0/+94
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05Squashfs: fragment block operationsPhillip Lougher1-0/+98
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05Squashfs: export operationsPhillip Lougher1-0/+155
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05Squashfs: super block operationsPhillip Lougher1-0/+440
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05Squashfs: symlink operationsPhillip Lougher1-0/+118
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05Squashfs: regular file operationsPhillip Lougher1-0/+502
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05Squashfs: directory readdir operationsPhillip Lougher1-0/+235
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05Squashfs: directory lookup operationsPhillip Lougher1-0/+242
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05Squashfs: inode operationsPhillip Lougher1-0/+346
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
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