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>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/romfs/internal.h b/fs/romfs/internal.h
index 06044a9dc62d..95217b830118 100644
--- a/fs/romfs/internal.h
+++ b/fs/romfs/internal.h
@@ -43,5 +43,5 @@ extern int romfs_dev_read(struct super_block *sb, unsigned long pos,
                           void *buf, size_t buflen);
 extern ssize_t romfs_dev_strnlen(struct super_block *sb,
                                  unsigned long pos, size_t maxlen);
-extern int romfs_dev_strncmp(struct super_block *sb, unsigned long pos,
-                             const char *str, size_t size);
+extern int romfs_dev_strcmp(struct super_block *sb, unsigned long pos,
+                            const char *str, size_t size);