--- sys/nlm/nlm_prot_impl.c.orig1	2011-08-25 14:49:39.000000000 -0500
+++ sys/nlm/nlm_prot_impl.c	2011-08-25 14:56:59.000000000 -0500
@@ -1774,7 +1774,7 @@
 
 static int
 nlm_get_vfs_state(struct nlm_host *host, struct svc_req *rqstp,
-    fhandle_t *fhp, struct vfs_state *vs)
+    fhandle_t *fhp, struct vfs_state *vs, accmode_t accmode)
 {
 	int error, exflags;
 	struct ucred *cred = NULL, *credanon;
@@ -1815,9 +1815,14 @@
 	/*
 	 * Check cred.
 	 */
-	error = VOP_ACCESS(vs->vs_vp, VWRITE, cred, curthread);
-	if (error)
+	error = VOP_ACCESS(vs->vs_vp, accmode, cred, curthread);
+	if (error) {
+		NLM_DEBUG(5, "nlm_get_vfs_state(): (%s) VOP_ACCESS(%s,%d) error=%d\n",
+			host->nh_caller_name,
+			accmode == F_RDLCK ? "F_RDLCK":"F_WRLCK",
+			cred->cr_uid, error);
 		goto out;
+	}
 
 #if __FreeBSD_version < 800011
 	VOP_UNLOCK(vs->vs_vp, 0, curthread);
@@ -1871,6 +1876,7 @@
 	struct nlm_host *host, *bhost;
 	int error, sysid;
 	struct flock fl;
+	accmode_t accmode;
 	
 	memset(result, 0, sizeof(*result));
 	memset(&vs, 0, sizeof(vs));
@@ -1896,7 +1902,8 @@
 		goto out;
 	}
 
-	error = nlm_get_vfs_state(host, rqstp, &fh, &vs);
+	accmode = argp->exclusive ? VWRITE : VREAD;
+	error = nlm_get_vfs_state(host, rqstp, &fh, &vs, accmode);
 	if (error) {
 		result->stat.stat = nlm_convert_error(error);
 		goto out;
@@ -1967,6 +1974,7 @@
 	struct nlm_host *host;
 	int error, sysid;
 	struct flock fl;
+	accmode_t accmode;
 	
 	memset(result, 0, sizeof(*result));
 	memset(&vs, 0, sizeof(vs));
@@ -2001,7 +2009,8 @@
 		goto out;
 	}
 
-	error = nlm_get_vfs_state(host, rqstp, &fh, &vs);
+	accmode = argp->exclusive ? VWRITE : VREAD;
+	error = nlm_get_vfs_state(host, rqstp, &fh, &vs, accmode);
 	if (error) {
 		result->stat.stat = nlm_convert_error(error);
 		goto out;
@@ -2155,6 +2164,7 @@
 	int error, sysid;
 	struct flock fl;
 	struct nlm_async_lock *af;
+	accmode_t accmode;
 	
 	memset(result, 0, sizeof(*result));
 	memset(&vs, 0, sizeof(vs));
@@ -2180,7 +2190,8 @@
 		goto out;
 	}
 
-	error = nlm_get_vfs_state(host, rqstp, &fh, &vs);
+	accmode = argp->exclusive ? VWRITE : VREAD;
+	error = nlm_get_vfs_state(host, rqstp, &fh, &vs, accmode);
 	if (error) {
 		result->stat.stat = nlm_convert_error(error);
 		goto out;
@@ -2244,6 +2255,7 @@
 	struct nlm_host *host;
 	int error, sysid;
 	struct flock fl;
+	accmode_t accmode;
 	
 	memset(result, 0, sizeof(*result));
 	memset(&vs, 0, sizeof(vs));
@@ -2269,7 +2281,8 @@
 		goto out;
 	}
 
-	error = nlm_get_vfs_state(host, rqstp, &fh, &vs);
+	accmode = VREAD; /* argv->exclusive not in nlm4_unlockargs */
+	error = nlm_get_vfs_state(host, rqstp, &fh, &vs, accmode);
 	if (error) {
 		result->stat.stat = nlm_convert_error(error);
 		goto out;