dlm: don't allow zero length names

kobject doesn't like zero length object names, so let's test for that.

Signed-off-by: Tycho Andersen <tycho@tycho.ws>
Signed-off-by: David Teigland <teigland@redhat.com>

diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c
index 5ba94be..7b9d47f 100644 (file)
--- a/fs/dlm/lockspace.c
+++ b/fs/dlm/lockspace.c
@@ -431,7 +431,7 @@ static int new_lockspace(const char *name, const char *cluster,
        int do_unreg = 0;
        int namelen = strlen(name);
 
-       if (namelen > DLM_LOCKSPACE_LEN)
+       if (namelen > DLM_LOCKSPACE_LEN || namelen == 0)
                return -EINVAL;
 
        if (!lvblen || (lvblen % 8))