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authorPhillip Lougher <phillip@squashfs.org.uk>2012-01-02 17:47:14 +0000
committerPhillip Lougher <phillip@squashfs.org.uk>2012-01-02 17:47:14 +0000
commitcc37f75a9ffbbfcb1c3297534f293c8284e3c5a6 (patch)
treef7cb651315e55e96245ba0495848fd07369a2faf /fs/squashfs/super.c
parentd7fbd893388d9e86d29b7cfbd5457bcf03496fbf (diff)
Squashfs: fix mount time sanity check for corrupted superblock
A Squashfs filesystem containing nothing but an empty directory, although unusual and ultimately pointless, is still valid. The directory_table >= next_table sanity check rejects these filesystems as invalid because the directory_table is empty and equal to next_table. Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
Diffstat (limited to 'fs/squashfs/super.c')
-rw-r--r--fs/squashfs/super.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/squashfs/super.c b/fs/squashfs/super.c
index 2da1715452a..4619247d74e 100644
--- a/fs/squashfs/super.c
+++ b/fs/squashfs/super.c
@@ -290,7 +290,7 @@ handle_fragments:
check_directory_table:
/* Sanity check directory_table */
- if (msblk->directory_table >= next_table) {
+ if (msblk->directory_table > next_table) {
err = -EINVAL;
goto failed_mount;
}