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authorBob Copeland <me@bobcopeland.com>2008-09-06 17:51:53 -0400
committerBob Copeland <me@bobcopeland.com>2010-07-10 14:37:06 -0400
commitf068272cb2f134a194b93e94a8e0672bfce48cd8 (patch)
treec6a2a67951646eee3d040b732b384fa5c98fe78c /fs/omfs/omfs.h
parent70d9e384aa7df681cfffd65947af72b22e86690e (diff)
downloadlinux-f068272cb2f134a194b93e94a8e0672bfce48cd8.tar.bz2
omfs: check bounds on block numbers before passing to sb_bread
In case of filesystem corruption, passing unchecked block numbers into sb_bread can result in an infinite loop in __getblk(). Introduce a wrapper function omfs_sbread() to check the block numbers and to also perform the clus_to_blk() scaling. Signed-off-by: Bob Copeland <me@bobcopeland.com>
Diffstat (limited to 'fs/omfs/omfs.h')
-rw-r--r--fs/omfs/omfs.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/omfs/omfs.h b/fs/omfs/omfs.h
index ebe2fdbe535e..7d414fef501a 100644
--- a/fs/omfs/omfs.h
+++ b/fs/omfs/omfs.h
@@ -58,6 +58,7 @@ extern void omfs_make_empty_table(struct buffer_head *bh, int offset);
extern int omfs_shrink_inode(struct inode *inode);
/* inode.c */
+extern struct buffer_head *omfs_bread(struct super_block *sb, sector_t block);
extern struct inode *omfs_iget(struct super_block *sb, ino_t inode);
extern struct inode *omfs_new_inode(struct inode *dir, int mode);
extern int omfs_reserve_block(struct super_block *sb, sector_t block);