linux/fs/squashfs, branch v3.12.26

Squashfs: add corruption check for type in squashfs_readdir()

2013-09-06T03:57:54Z

We read the type field from disk. This value should be sanity checked for correctness to avoid an out of bounds access when reading the squashfs_filetype_table array. Signed-off-by: Phillip Lougher

Squashfs: add corruption check in get_dir_index_using_offset()

2013-09-06T03:57:53Z

We read the size (of the name) field from disk. This value should be sanity checked for correctness to avoid blindly reading huge amounts of unnecessary data from disk on corruption. Note, here we're not actually reading the name into a buffer, but skipping it, and so corruption doesn't cause buffer overflow, merely lots of unnecessary amounts of data to be read. Signed-off-by: Phillip Lougher

Squashfs: fix corruption checks in squashfs_readdir()

2013-09-06T03:57:53Z

The dir_count and size fields when read from disk are sanity checked for correctness. However, the sanity checks only check the values are not greater than expected. As dir_count and size were incorrectly defined as signed ints, this can lead to corrupted values appearing as negative which are not trapped. Signed-off-by: Phillip Lougher

Squashfs: fix corruption checks in squashfs_lookup()

2013-09-06T03:57:53Z

Squashfs: fix corruption check in get_dir_index_using_name()

2013-09-06T03:57:52Z

Patch "Squashfs: sanity check information from disk" from Dan Carpenter adds a missing check for corruption in the "size" field while reading the directory index from disk. It, however, sets err to -EINVAL, this value is not used later, and so setting it is completely redundant. So remove it. Errors in reading the index are deliberately non-fatal. If we get an error in reading the index we just return the part of the index we have managed to read - the index isn't essential, just quicker. Signed-off-by: Phillip Lougher

Squashfs: Optimized uncompressed buffer loop

2013-09-04T23:13:37Z

Merged the two for loops. We might get a little gain by overlapping wait_on_bh and the memcpy operations. Signed-off-by: Manish Sharma Signed-off-by: Phillip Lougher

Squashfs: sanity check information from disk

2013-08-29T00:23:29Z

We read the size of the name from the disk, but a larger name than expected would cause memory corruption. Signed-off-by: Dan Carpenter Signed-off-by: Phillip Lougher

[readdir] convert squashfs

2013-06-29T08:56:28Z

Signed-off-by: Al Viro

fs: Limit sys_mount to only request filesystem modules. (Part 3)

2013-03-11T14:09:48Z

Somehow I failed to add the MODULE_ALIAS_FS for cifs, hostfs, hpfs, squashfs, and udf despite what I thought were my careful checks :( Add them now. Signed-off-by: "Eric W. Biederman"

new helper: file_inode(file)

2013-02-23T04:31:31Z

Signed-off-by: Al Viro