Commit Graph

18 Commits

Author SHA1 Message Date
Phillip Lougher
363911d027 Squashfs: Valid filesystems are flagged as bad by the corrupted fs patch
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>
2009-03-12 03:23:48 +00:00
Roel Kluin
f4f8056a86 Squashfs: frag_size should be signed, as it can hold an error result
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-03-05 00:55:31 +00:00
Phillip Lougher
118e1ef6fa Squashfs: Fix oops when reading fsfuzzer corrupted filesystems
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>
2009-03-05 00:31:12 +00:00
Alexey Dobriyan
22635ec9e0 fs/Kconfig: move squashfs out
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2009-01-22 13:15:58 +03:00
Qinghuang Feng
1bcbf31337 btrfs & squashfs: Move btrfs and squashfsto's magic number to <linux/magic.h>
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>
2009-01-15 16:39:38 -08:00
Phillip Lougher
fcef6fb6c5 Squashfs: Makefiles
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:27 +00:00
Phillip Lougher
ffae2cd73a Squashfs: header files
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:27 +00:00
Phillip Lougher
e2780ab159 Squashfs: block operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:27 +00:00
Phillip Lougher
f400e12656 Squashfs: cache operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:26 +00:00
Phillip Lougher
8256c8f631 Squashfs: uid/gid lookup operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:26 +00:00
Phillip Lougher
122edd1514 Squashfs: fragment block operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:25 +00:00
Phillip Lougher
122601408d Squashfs: export operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:25 +00:00
Phillip Lougher
0aa6661905 Squashfs: super block operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:25 +00:00
Phillip Lougher
1dc4bba39d Squashfs: symlink operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:24 +00:00
Phillip Lougher
1701aecb68 Squashfs: regular file operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:24 +00:00
Phillip Lougher
07972dde75 Squashfs: directory readdir operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:23 +00:00
Phillip Lougher
c88da2c979 Squashfs: directory lookup operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:23 +00:00
Phillip Lougher
6545b246a2 Squashfs: inode operations
Signed-off-by: Phillip Lougher <phillip@lougher.demon.co.uk>
2009-01-05 08:46:22 +00:00