linux.git/fs/squashfs, branch v2.6.29 Linux kernel source tree Squashfs: Valid filesystems are flagged as bad by the corrupted fs patch 2009-03-12T03:23:48+00:00 Phillip Lougher phillip@lougher.demon.co.uk 2009-03-12T03:23:48+00:00 363911d027d1de1c6df79eb3f487f5476b9619f4 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> 
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>
Squashfs: frag_size should be signed, as it can hold an error result 2009-03-05T00:55:31+00:00 Roel Kluin roel.kluin@gmail.com 2009-03-05T00:55:31+00:00 f4f8056a862a9950320429dfda708c88b4ce6025 Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk> 
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
Squashfs: Fix oops when reading fsfuzzer corrupted filesystems 2009-03-05T00:31:12+00:00 Phillip Lougher phillip@lougher.demon.co.uk 2009-03-05T00:31:12+00:00 118e1ef6fabfc023126e6075f6ac0fc729cb5285 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> 
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>
fs/Kconfig: move squashfs out 2009-01-22T10:15:58+00:00 Alexey Dobriyan adobriyan@gmail.com 2009-01-22T07:57:46+00:00 22635ec9e0cb5afbc1eaa25495ae28da8416aac3 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> 
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
btrfs & squashfs: Move btrfs and squashfsto's magic number to <linux/magic.h> 2009-01-16T00:39:38+00:00 Qinghuang Feng qhfeng.kernel@gmail.com 2009-01-15T21:51:03+00:00 1bcbf31337391a2f54ef6c1e8871c2de5944a7dc 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> 
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>
Squashfs: Makefiles 2009-01-05T08:46:27+00:00 Phillip Lougher phillip@lougher.demon.co.uk 2009-01-05T08:46:27+00:00 fcef6fb6c5cf54927e1ca86b86a991e7aa9391f5 Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk> 
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
Squashfs: header files 2009-01-05T08:46:27+00:00 Phillip Lougher phillip@lougher.demon.co.uk 2009-01-05T08:46:27+00:00 ffae2cd73a9e828b1a188f83c5dedce16f7c0c68 Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk> 
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
Squashfs: block operations 2009-01-05T08:46:27+00:00 Phillip Lougher phillip@lougher.demon.co.uk 2009-01-05T08:46:27+00:00 e2780ab159ac60ef5bfc083081f44f8ff58579dc Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk> 
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
Squashfs: cache operations 2009-01-05T08:46:26+00:00 Phillip Lougher phillip@lougher.demon.co.uk 2009-01-05T08:46:26+00:00 f400e12656ab518be107febfe2315fb1eab5a342 Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk> 
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
Squashfs: uid/gid lookup operations 2009-01-05T08:46:26+00:00 Phillip Lougher phillip@lougher.demon.co.uk 2009-01-05T08:46:26+00:00 8256c8f631937bb08b3881c380c42ff6874a82f0 Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk> 
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>