From: Chuck Lever <chuck.lever@oracle.com>
Date: Mon, 16 Nov 2009 17:53:01 +0000 (-0500)
Subject: mount.nfs: Assume v2/v3 if mount-related options are present
X-Git-Tag: nfs-utils-1-2-2-rc2~16
X-Git-Url: https://git.decadent.org.uk/gitweb/?p=nfs-utils.git;a=commitdiff_plain;h=2498a68b1bec01d0ee8a63962b314140e8289036;ds=sidebyside

mount.nfs: Assume v2/v3 if mount-related options are present

Don't try NFSv4 if any MNT protocol related options were
presented by the user.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
---

diff --git a/utils/mount/stropts.c b/utils/mount/stropts.c
index b595649..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;