X-Git-Url: https://git.decadent.org.uk/gitweb/?p=nfs-utils.git;a=blobdiff_plain;f=utils%2Fmount%2Fstropts.c;h=a0b9e7fdf80a0f8967bda37c05b1ee34444769a0;hp=4c9ee17b95ba9554f00dfb77966bb34255bdd111;hb=2498a68b1bec01d0ee8a63962b314140e8289036;hpb=e4328bb8d13ae6dda33308557e6bbb352d5674bb

diff --git a/utils/mount/stropts.c b/utils/mount/stropts.c
index 4c9ee17..a0b9e7f 100644
--- a/utils/mount/stropts.c
+++ b/utils/mount/stropts.c
@@ -611,6 +611,18 @@ static int nfs_try_mount_v4(struct nfsmount_info *mi)
 	}
 
 	if (mi->version == 0) {
+		if (po_contains(options, "mounthost") ||
+			po_contains(options, "mountaddr") ||
+			po_contains(options, "mountvers") ||
+			po_contains(options, "mountproto")) {
+		/*
+		 * Since these mountd options are set assume version 3
+		 * is wanted so error out with EPROTONOSUPPORT so the
+		 * protocol negation starts with v3.
+		 */
+			errno = EPROTONOSUPPORT;
+			goto out_fail;
+		}
 		if (po_append(options, "vers=4") == PO_FAILED) {
 			errno = EINVAL;
 			goto out_fail;
@@ -621,12 +633,13 @@ static int nfs_try_mount_v4(struct nfsmount_info *mi)
 		errno = EINVAL;
 		goto out_fail;
 	}
+
 	/*
 	 * Update option string to be recorded in /etc/mtab.
 	 */
 	if (po_join(options, mi->extra_opts) == PO_FAILED) {
 		errno = ENOMEM;
-		return 0;
+		goto out_fail;
 	}
 
 	result = nfs_sys_mount(mi, options);