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authorDavid Howells <dhowells@redhat.com>2009-04-23 16:41:13 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-24 13:28:31 -0700
commit84baf74bf23bbe9f3deafb5d2f27e2b5dc0bc052 (patch)
tree45af84d051ca760a9f9f24aa3775e5505ccd3627 /fs/romfs/super.c
parenta5422a5111811401f7756345e4c237ff06cf6d1e (diff)
downloadlinux-84baf74bf23bbe9f3deafb5d2f27e2b5dc0bc052.tar.bz2
ROMFS: romfs_lookup() shouldn't be doing a partial name comparison
romfs_lookup() should be using a routine akin to strcmp() on the backing store, rather than one akin to strncmp(). If it uses the latter, it's liable to match /bin/shutdown when looking up /bin/sh. Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Michal Simek <monstr@monstr.eu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/romfs/super.c')
-rw-r--r--fs/romfs/super.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/romfs/super.c b/fs/romfs/super.c
index 10ca7d984a8b..c53b5ef8a02f 100644
--- a/fs/romfs/super.c
+++ b/fs/romfs/super.c
@@ -240,8 +240,8 @@ static struct dentry *romfs_lookup(struct inode *dir, struct dentry *dentry,
goto error;
/* try to match the first 16 bytes of name */
- ret = romfs_dev_strncmp(dir->i_sb, offset + ROMFH_SIZE, name,
- len);
+ ret = romfs_dev_strcmp(dir->i_sb, offset + ROMFH_SIZE, name,
+ len);
if (ret < 0)
goto error;
if (ret == 1)