nfs-utils/SOURCES/nfs-utils-1.3.0-mount-restore-econn.patch

diff --git a/utils/mount/network.c b/utils/mount/network.c
index 751f9b8..b2e4374 100644
--- a/utils/mount/network.c
+++ b/utils/mount/network.c
@@ -33,11 +33,13 @@
 #include <errno.h>
 #include <netdb.h>
 #include <time.h>
+#include <grp.h>
 
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/wait.h>
 #include <sys/stat.h>
+#include <linux/in6.h>
 #include <netinet/in.h>
 #include <rpc/rpc.h>
 #include <rpc/pmap_prot.h>
@@ -802,6 +804,7 @@ int start_statd(void)
 			pid_t pid = fork();
 			switch (pid) {
 			case 0: /* child */
+				setgroups(0, NULL);
 				setgid(0);
 				setuid(0);
 				execle(START_STATD, START_STATD, NULL, envp);
@@ -1112,6 +1115,7 @@ static int nfs_ca_sockname(const struct sockaddr *sap, const socklen_t salen,
 		.sin6_addr		= IN6ADDR_ANY_INIT,
 	};
 	int sock, result = 0;
+	int val;
 
 	sock = socket(sap->sa_family, SOCK_DGRAM, IPPROTO_UDP);
 	if (sock < 0)
@@ -1123,6 +1127,9 @@ static int nfs_ca_sockname(const struct sockaddr *sap, const socklen_t salen,
 			goto out;
 		break;
 	case AF_INET6:
+		/* Make sure the call-back address is public/permanent */
+		val = IPV6_PREFER_SRC_PUBLIC;
+		setsockopt(sock, SOL_IPV6, IPV6_ADDR_PREFERENCES, &val, sizeof(val));
 		if (bind(sock, SAFE_SOCKADDR(&sin6), sizeof(sin6)) < 0)
 			goto out;
 		break;
diff --git a/utils/mount/stropts.c b/utils/mount/stropts.c
index fc68d41..57e932f 100644
--- a/utils/mount/stropts.c
+++ b/utils/mount/stropts.c
@@ -91,6 +91,7 @@ struct nfsmount_info {
 				*type;		/* "nfs" or "nfs4" */
 	char			*hostname;	/* server's hostname */
 	struct addrinfo		*address;	/* server's addresses */
+	sa_family_t		family;		/* Address family */
 
 	struct mount_options	*options;	/* parsed mount options */
 	char			**extra_opts;	/* string for /etc/mtab */
@@ -388,39 +389,19 @@ static int nfs_set_version(struct nfsmount_info *mi)
  */
 static int nfs_validate_options(struct nfsmount_info *mi)
 {
-	struct addrinfo hint = {
-		.ai_protocol	= (int)IPPROTO_UDP,
-	};
-	sa_family_t family;
-	int error;
-
 	if (!nfs_parse_devname(mi->spec, &mi->hostname, NULL))
 		return 0;
 
-	if (!nfs_nfs_proto_family(mi->options, &family))
+	if (!nfs_nfs_proto_family(mi->options, &mi->family))
 		return 0;
 
 	/*
 	 * A remount is not going to be able to change the server's address,
 	 * nor should we try to resolve another address for the server as we
 	 * may end up with a different address.
+	 * A non-remount will set 'addr' from ->hostname
 	 */
-	if (mi->flags & MS_REMOUNT) {
-		po_remove_all(mi->options, "addr");
-	} else {
-		hint.ai_family = (int)family;
-		error = getaddrinfo(mi->hostname, NULL, &hint, &mi->address);
-		if (error != 0) {
-			nfs_error(_("%s: Failed to resolve server %s: %s"),
-				progname, mi->hostname, gai_strerror(error));
-			mi->address = NULL;
-			return 0;
-		}
-
-		if (!nfs_append_addr_option(mi->address->ai_addr,
-						mi->address->ai_addrlen, mi->options))
-			return 0;
-	}
+	po_remove_all(mi->options, "addr");
 
 	if (!nfs_set_version(mi))
 		return 0;
@@ -900,7 +881,10 @@ check_result:
 			result = nfs_try_mount_v4(mi);
 			if (result == 0 && errno != ECONNREFUSED)
 				goto check_result;
-		}
+		} else if (result == 0)
+			/* Restore original errno with v3 failures */
+			errno = ECONNREFUSED;
+
 		return result;
 	default:
 		return result;
@@ -923,6 +907,32 @@ static int nfs_try_mount(struct nfsmount_info *mi)
 {
 	int result = 0;
 
+	if (mi->address == NULL) {
+		struct addrinfo hint = {
+			.ai_protocol	= (int)IPPROTO_UDP,
+		};
+		int error;
+		struct addrinfo *address;
+
+		hint.ai_family = (int)mi->family;
+		error = getaddrinfo(mi->hostname, NULL, &hint, &address);
+		if (error != 0) {
+			if (error == EAI_AGAIN)
+				errno = EAGAIN;
+			else {
+				nfs_error(_("%s: Failed to resolve server %s: %s"),
+					  progname, mi->hostname, gai_strerror(error));
+				errno = EALREADY;
+			}
+			return 0;
+		}
+
+		if (!nfs_append_addr_option(address->ai_addr,
+					    address->ai_addrlen, mi->options))
+			return 0;
+		mi->address = address;
+	}
+
 	switch (mi->version.major) {
 		case 2:
 		case 3:
@@ -1018,10 +1028,8 @@ static int nfsmount_fg(struct nfsmount_info *mi)
 		if (nfs_is_permanent_error(errno))
 			break;
 
-		if (time(NULL) > timeout) {
-			errno = ETIMEDOUT;
+		if (time(NULL) > timeout)
 			break;
-		}
 
 		if (errno != ETIMEDOUT) {
 			if (sleep(secs))