X-Git-Url: https://git.decadent.org.uk/gitweb/?a=blobdiff_plain;f=utils%2Fmount%2Fstropts.c;h=024140082fcf56f65968453ca912158ab73f3668;hb=be5b2ed57b0e0a3da91f4ec785718302d0351199;hp=fc1b0da5da65a723ba6385a4f2bfbc34e339bab1;hpb=0f76458dd0f9a34210e44515a67d55e713a990ce;p=nfs-utils.git

diff --git a/utils/mount/stropts.c b/utils/mount/stropts.c
index fc1b0da..0241400 100644
--- a/utils/mount/stropts.c
+++ b/utils/mount/stropts.c
@@ -538,7 +538,10 @@ nfs_rewrite_pmap_mount_options(struct mount_options *options)
 
 	if (!nfs_construct_new_options(options, nfs_saddr, &nfs_pmap,
 					mnt_saddr, &mnt_pmap)) {
-		errno = EINVAL;
+		if (rpc_createerr.cf_stat == RPC_UNKNOWNPROTO)
+			errno = EPROTONOSUPPORT;
+		else
+			errno = EINVAL;
 		return 0;
 	}
 
@@ -576,12 +579,9 @@ static int nfs_sys_mount(struct nfsmount_info *mi, struct mount_options *opts)
 	return !result;
 }
 
-/*
- * For "-t nfs vers=2" or "-t nfs vers=3" mounts.
- */
-static int nfs_try_mount_v3v2(struct nfsmount_info *mi)
+static int nfs_do_mount_v3v2(struct nfsmount_info *mi,
+		struct sockaddr *sap, socklen_t salen)
 {
-	struct addrinfo *ai = mi->address;
 	struct mount_options *options = po_dup(mi->options);
 	int result = 0;
 
@@ -589,18 +589,21 @@ static int nfs_try_mount_v3v2(struct nfsmount_info *mi)
 		errno = ENOMEM;
 		return result;
 	}
-
-	if (!nfs_append_addr_option(ai->ai_addr, ai->ai_addrlen, options)) {
-		errno = EINVAL;
+	errno = 0;
+	if (!nfs_append_addr_option(sap, salen, options)) {
+		if (errno == 0)
+			errno = EINVAL;
 		goto out_fail;
 	}
 
 	if (!nfs_fix_mounthost_option(options, mi->hostname)) {
-		errno = EINVAL;
+		if (errno == 0)
+			errno = EINVAL;
 		goto out_fail;
 	}
 	if (!mi->fake && !nfs_verify_lock_option(options)) {
-		errno = EINVAL;
+		if (errno == 0)
+			errno = EINVAL;
 		goto out_fail;
 	}
 
@@ -630,11 +633,36 @@ out_fail:
 }
 
 /*
- * For "-t nfs -o vers=4" or "-t nfs4" mounts.
+ * Attempt a "-t nfs vers=2" or "-t nfs vers=3" mount.
+ *
+ * Returns TRUE if successful, otherwise FALSE.
+ * "errno" is set to reflect the individual error.
  */
-static int nfs_try_mount_v4(struct nfsmount_info *mi)
+static int nfs_try_mount_v3v2(struct nfsmount_info *mi)
+{
+	struct addrinfo *ai;
+	int ret;
+
+	for (ai = mi->address; ai != NULL; ai = ai->ai_next) {
+		ret = nfs_do_mount_v3v2(mi, ai->ai_addr, ai->ai_addrlen);
+		if (ret != 0)
+			return ret;
+
+		switch (errno) {
+		case ECONNREFUSED:
+		case EOPNOTSUPP:
+		case EHOSTUNREACH:
+			continue;
+		default:
+			break;
+		}
+	}
+	return ret;
+}
+
+static int nfs_do_mount_v4(struct nfsmount_info *mi,
+		struct sockaddr *sap, socklen_t salen)
 {
-	struct addrinfo *ai = mi->address;
 	struct mount_options *options = po_dup(mi->options);
 	int result = 0;
 
@@ -662,12 +690,12 @@ static int nfs_try_mount_v4(struct nfsmount_info *mi)
 		}
 	}
 
-	if (!nfs_append_addr_option(ai->ai_addr, ai->ai_addrlen, options)) {
+	if (!nfs_append_addr_option(sap, salen, options)) {
 		errno = EINVAL;
 		goto out_fail;
 	}
 
-	if (!nfs_append_clientaddr_option(ai->ai_addr, ai->ai_addrlen, options)) {
+	if (!nfs_append_clientaddr_option(sap, salen, options)) {
 		errno = EINVAL;
 		goto out_fail;
 	}
@@ -691,6 +719,33 @@ out_fail:
 	return result;
 }
 
+/*
+ * Attempt a "-t nfs -o vers=4" or "-t nfs4" mount.
+ *
+ * Returns TRUE if successful, otherwise FALSE.
+ * "errno" is set to reflect the individual error.
+ */
+static int nfs_try_mount_v4(struct nfsmount_info *mi)
+{
+	struct addrinfo *ai;
+	int ret;
+
+	for (ai = mi->address; ai != NULL; ai = ai->ai_next) {
+		ret = nfs_do_mount_v4(mi, ai->ai_addr, ai->ai_addrlen);
+		if (ret != 0)
+			return ret;
+
+		switch (errno) {
+		case ECONNREFUSED:
+		case EHOSTUNREACH:
+			continue;
+		default:
+			break;
+		}
+	}
+	return ret;
+}
+
 /*
  * This is a single pass through the fg/bg loop.
  *
@@ -750,6 +805,7 @@ static int nfs_is_permanent_error(int error)
 	case ESTALE:
 	case ETIMEDOUT:
 	case ECONNREFUSED:
+	case EHOSTUNREACH:
 		return 0;	/* temporary */
 	default:
 		return 1;	/* permanent */