tree f2aab5b8acc99d967bc507da019e95f6ded80292
parent 9dbc41d5d371cb10099c8182552f3915920e69b6
author Phillip Lougher <phillip@squashfs.org.uk> 1378178512 +0100
committer Phillip Lougher <phillip@squashfs.org.uk> 1378439873 +0100

Squashfs: fix corruption checks in squashfs_lookup()

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 <phillip@squashfs.org.uk>