[PATCH RFC 3/3] mount: Remove NFS v2 support from mount.nfs

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This patch removes the ability to do NFS v2
mounts. They will now fail with EOPNOTSUPP.

Signed-off-by: Steve Dickson <steved@xxxxxxxxxx>
---
 utils/mount/configfile.c  | 2 +-
 utils/mount/network.c     | 4 ++--
 utils/mount/nfsmount.conf | 2 +-
 utils/mount/stropts.c     | 3 +++
 4 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/utils/mount/configfile.c b/utils/mount/configfile.c
index 3d3684ef..1d88cbfc 100644
--- a/utils/mount/configfile.c
+++ b/utils/mount/configfile.c
@@ -71,7 +71,7 @@ struct mnt_alias {
 int mnt_alias_sz = (sizeof(mnt_alias_tab)/sizeof(mnt_alias_tab[0]));
 
 static const char *version_keys[] = {
-	"v2", "v3", "v4", "vers", "nfsvers", "minorversion", NULL
+	"v3", "v4", "vers", "nfsvers", "minorversion", NULL
 };
 
 static int strict;
diff --git a/utils/mount/network.c b/utils/mount/network.c
index 35261171..bfda5c41 100644
--- a/utils/mount/network.c
+++ b/utils/mount/network.c
@@ -97,7 +97,7 @@ static const char *nfs_transport_opttbl[] = {
 };
 
 static const char *nfs_version_opttbl[] = {
-	"v2",
+	"v2", /* no longer supported */
 	"v3",
 	"v4",
 	"vers",
@@ -1286,7 +1286,7 @@ nfs_nfs_version(char *type, struct mount_options *options, struct nfs_version *v
 	else if (found < 0)
 		return 1;
 	else if (found <= 2 ) {
-		/* v2, v3, v4 */
+		/* v3, v4 */
 		version_val = version_key + 1;
 		version->v_mode = V_SPECIFIC;
 	} else if (found > 2 ) {
diff --git a/utils/mount/nfsmount.conf b/utils/mount/nfsmount.conf
index 6bdc225a..342063f7 100644
--- a/utils/mount/nfsmount.conf
+++ b/utils/mount/nfsmount.conf
@@ -28,7 +28,7 @@
 # This statically named section defines global mount 
 # options that can be applied on all NFS mount.
 #
-# Protocol Version [2,3,4]
+# Protocol Version [3,4]
 # This defines the default protocol version which will
 # be used to start the negotiation with the server.
 # Defaultvers=4
diff --git a/utils/mount/stropts.c b/utils/mount/stropts.c
index fa67a66f..f6f0c1d5 100644
--- a/utils/mount/stropts.c
+++ b/utils/mount/stropts.c
@@ -357,6 +357,7 @@ static int nfs_insert_sloppy_option(struct mount_options *options)
 
 static int nfs_set_version(struct nfsmount_info *mi)
 {
+
 	if (!nfs_nfs_version(mi->type, mi->options, &mi->version))
 		return 0;
 
@@ -1017,6 +1018,8 @@ static int nfs_try_mount(struct nfsmount_info *mi)
 
 	switch (mi->version.major) {
 		case 2:
+			errno = EOPNOTSUPP;
+			break;
 		case 3:
 			result = nfs_try_mount_v3v2(mi, FALSE);
 			break;
-- 
2.31.1




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