ocfs2: Allow binary names in the DLM

The OCFS2 DLM uses strlen() to determine lock name length, which excludes
the possibility of putting binary values in the name string. Fix this by
requiring that string length be passed in as a parameter.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c
index 9503240ef0e5..f784177b6241 100644
--- a/fs/ocfs2/dlm/dlmmaster.c
+++ b/fs/ocfs2/dlm/dlmmaster.c
@@ -740,6 +740,7 @@ struct dlm_lock_resource *dlm_new_lockres(struct dlm_ctxt *dlm,
  */
 struct dlm_lock_resource * dlm_get_lock_resource(struct dlm_ctxt *dlm,
                                           const char *lockid,
+                                          int namelen,
                                           int flags)
 {
         struct dlm_lock_resource *tmpres=NULL, *res=NULL;
@@ -748,13 +749,12 @@ struct dlm_lock_resource * dlm_get_lock_resource(struct dlm_ctxt *dlm,
         int blocked = 0;
         int ret, nodenum;
         struct dlm_node_iter iter;
-        unsigned int namelen, hash;
+        unsigned int hash;
         int tries = 0;
         int bit, wait_on_recovery = 0;
 
         BUG_ON(!lockid);
 
-        namelen = strlen(lockid);
         hash = dlm_lockid_hash(lockid, namelen);
 
         mlog(0, "get lockres %s (len %d)\n", lockid, namelen);