autofs-5.0.7 - only probe specific nfs version when requested

From: Ian Kent <raven@themaw.net>

If a specific NFS version is given as an option the set the probe flags
to probe only that version.
---
 CHANGELOG           |    1 +
 modules/mount_nfs.c |   10 +++++++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

--- autofs-5.0.7.orig/CHANGELOG
+++ autofs-5.0.7/CHANGELOG
@@ -63,6 +63,7 @@
 - teach dumpmaps to output simple key value pairs.
 - fix get_nfs_info() probe.
 - fix portmap lookup.
+- only probe specific nfs version if requested.
 
 25/07/2012 autofs-5.0.7
 =======================
--- autofs-5.0.7.orig/modules/mount_nfs.c
+++ autofs-5.0.7/modules/mount_nfs.c
@@ -146,7 +146,15 @@ int mount_mount(struct autofs_point *ap,
 				if (strncmp("vers=4", cp, o_len) == 0 ||
 				    strncmp("nfsvers=4", cp, o_len) == 0)
 					vers = NFS4_VERS_MASK | TCP_SUPPORTED;
-				else if (strstr(cp, "port=") == cp &&
+				else if (strncmp("vers=3", cp, o_len) == 0 ||
+					 strncmp("nfsvers=3", cp, o_len) == 0) {
+					vers &= ~(NFS4_VERS_MASK | NFS_VERS_MASK);
+					vers |= NFS3_REQUESTED;
+				} else if (strncmp("vers=2", cp, o_len) == 0 ||
+					 strncmp("nfsvers=2", cp, o_len) == 0) {
+					vers &= ~(NFS4_VERS_MASK | NFS_VERS_MASK);
+					vers |= NFS2_REQUESTED;
+				} else if (strstr(cp, "port=") == cp &&
 					 o_len - 5 < 25) {
 					char optport[25];