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

[nfs-utils.git] / utils / mount / network.c

diff --git a/utils/mount/network.c b/utils/mount/network.c
index 1a053519718437f2c5c8b73c7b5a2396c66404e2..7b1152a4b3fa479e121a8709af7a42dd40081c48 100644 (file)
--- a/utils/mount/network.c
+++ b/utils/mount/network.c
@@ -50,6 +50,7 @@
 #include "nfsrpc.h"
 #include "parse_opt.h"
 #include "network.h"
+#include "conffile.h"
 
 #define PMAP_TIMEOUT   (10)
 #define CONNECT_TIMEOUT        (20)
@@ -171,6 +172,27 @@ static const unsigned long probe_mnt3_first[] = {
        0,
 };
 
+static const unsigned int *nfs_default_proto(void);
+#ifdef MOUNT_CONFIG
+static const unsigned int *nfs_default_proto()
+{
+       extern unsigned long config_default_proto;
+       /*
+        * If the default proto has been set and 
+        * its not TCP, start with UDP
+        */
+       if (config_default_proto && config_default_proto != IPPROTO_TCP)
+               return probe_udp_first;
+
+       return probe_tcp_first; 
+}
+#else
+static const unsigned int *nfs_default_proto() 
+{
+       return probe_tcp_first; 
+}
+#endif /* MOUNT_CONFIG */
+
 static int nfs_lookup(const char *hostname, const sa_family_t family,
                      struct sockaddr *sap, socklen_t *salen)
 {
@@ -589,7 +611,6 @@ out_ok:
        nfs_clear_rpc_createerr();
        return 1;
 }
-
 /*
  * Probe a server's NFS service to determine which versions and
  * transport protocols are supported.
@@ -609,10 +630,14 @@ static int nfs_probe_nfsport(const struct sockaddr *sap, const socklen_t salen,
        if (pmap->pm_vers && pmap->pm_prot && pmap->pm_port)
                return 1;
 
-       if (nfs_mount_data_version >= 4)
+       if (nfs_mount_data_version >= 4) {
+               const unsigned int *probe_proto;
+
+               probe_proto = nfs_default_proto();
+
                return nfs_probe_port(sap, salen, pmap,
-                                       probe_nfs3_first, probe_tcp_first);
-       else
+                                       probe_nfs3_first, probe_proto);
+       } else
                return nfs_probe_port(sap, salen, pmap,
                                        probe_nfs2_only, probe_udp_only);
 }