mount.nfs: Use get_client_addr() to build clientaddr= option

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Neil Brown <neilb@suse.de>

diff --git a/utils/mount/stropts.c b/utils/mount/stropts.c
index 57d8dad0d66d32b09490063510bfe111fceb8978..b089d1bc88dfde96e6baaf0a694be69761cd399f 100644 (file)
--- a/utils/mount/stropts.c
+++ b/utils/mount/stropts.c
@@ -231,17 +231,16 @@ static int append_addr_opt(struct sockaddr_in *saddr, char **extra_opts)
  * Returns 1 if 'clientaddr=' option created successfully;
  * otherwise zero.
  */
-static int append_clientaddr_opt(const char *spec, char **extra_opts)
+static int append_clientaddr_opt(struct sockaddr_in *saddr, char **extra_opts)
 {
-       static char new_opts[1024], cbuf[1024];
-       static char ip_addr[16] = "127.0.0.1";
+       static char new_opts[2048], cbuf[256];
+       struct sockaddr_in my_addr;
 
-       if (!get_my_ipv4addr(ip_addr, sizeof(ip_addr)))
+       if (!get_client_address(saddr, &my_addr))
                return 0;
 
-       /* Ensure we have enough padding for the following strcat()s */
-       if (strlen(*extra_opts) + strlen(ip_addr) + 10 >= sizeof(new_opts)) {
-               nfs_error(_("%s: excessively long option argument"),
+       if (strlen(*extra_opts) + 30 >= sizeof(new_opts)) {
+               nfs_error(_("%s: too many mount options"),
                                progname);
                return 0;
        }
@@ -249,7 +248,8 @@ static int append_clientaddr_opt(const char *spec, char **extra_opts)
        strcat(new_opts, *extra_opts);
 
        snprintf(cbuf, sizeof(cbuf) - 1, "%sclientaddr=%s",
-                       *extra_opts ? "," : "", ip_addr);
+                       *extra_opts ? "," : "", inet_ntoa(my_addr.sin_addr));
+
        strcat(new_opts, cbuf);
 
        *extra_opts = xstrdup(new_opts);
@@ -352,7 +352,7 @@ int nfs4mount_s(const char *spec, const char *node, int flags,
        if (!append_addr_opt(&saddr, extra_opts))
                return EX_FAIL;
 
-       if (!append_clientaddr_opt(spec, extra_opts))
+       if (!append_clientaddr_opt(&saddr, extra_opts))
                return EX_FAIL;
 
        if (verbose)