nfsd41: clientid handling

Extract the clientid from sessionid to set the op_clientid on open.
Verify that the clid for other stateful ops is zero for minorversion != 0
Do all other checks for stateful ops without sessions.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Andy Adamson <andros@netapp.com>
[fixed whitespace indent]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
[nfsd41 remove sl_session from nfsd4_open]
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index bbaf3c9..d227f85 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -603,8 +603,8 @@
 {
 	if (clid->cl_boot == boot_time)
 		return 0;
-	dprintk("NFSD stale clientid (%08x/%08x)\n", 
-			clid->cl_boot, clid->cl_id);
+	dprintk("NFSD stale clientid (%08x/%08x) boot_time %08lx\n",
+		clid->cl_boot, clid->cl_id, boot_time);
 	return 1;
 }
 
@@ -2965,8 +2965,9 @@
 		if (lock->lk_is_new) {
 			if (!sop->so_is_open_owner)
 				return nfserr_bad_stateid;
-			if (!same_clid(&clp->cl_clientid, lockclid))
-			       return nfserr_bad_stateid;
+			if (!(flags & HAS_SESSION) &&
+			    !same_clid(&clp->cl_clientid, lockclid))
+				return nfserr_bad_stateid;
 			/* stp is the open stateid */
 			status = nfs4_check_openmode(stp, lkflg);
 			if (status)
@@ -3507,7 +3508,8 @@
 		struct nfs4_file *fp;
 		
 		status = nfserr_stale_clientid;
-		if (STALE_CLIENTID(&lock->lk_new_clientid))
+		if (!nfsd4_has_session(cstate) &&
+		    STALE_CLIENTID(&lock->lk_new_clientid))
 			goto out;
 
 		/* validate and update open stateid and open seqid */
@@ -3661,7 +3663,7 @@
 	nfs4_lock_state();
 
 	status = nfserr_stale_clientid;
-	if (STALE_CLIENTID(&lockt->lt_clientid))
+	if (!nfsd4_has_session(cstate) && STALE_CLIENTID(&lockt->lt_clientid))
 		goto out;
 
 	if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0))) {