add -r flag to make mountd do reverse resolve of ipaddress on the fly

[nfs-utils.git] / utils / mountd / rmtab.c

diff --git a/utils/mountd/rmtab.c b/utils/mountd/rmtab.c
index f641a96aa42e0eea05deaf20e9067cee5fdd1005..e8aff5ae3d0fed5f6d0b183a931c766a8b104f66 100644 (file)
--- a/utils/mountd/rmtab.c
+++ b/utils/mountd/rmtab.c
@@ -25,6 +25,8 @@
 
 #include <limits.h> /* PATH_MAX */
 
+extern int reverse_resolve;
+
 /* If new path is a link do not destroy it but place the
  * file where the link points.
  */
@@ -185,6 +187,8 @@ mountlist_list(void)
        struct rmtabent         *rep;
        struct stat             stb;
        int                     lockid;
+       struct in_addr          addr;
+       struct hostent          *he;
 
        if ((lockid = xflock(_PATH_RMTAB, "r")) < 0)
                return NULL;
@@ -204,8 +208,15 @@ mountlist_list(void)
                setrmtabent("r");
                while ((rep = getrmtabent(1, NULL)) != NULL) {
                        m = (mountlist) xmalloc(sizeof(*m));
-                       m->ml_hostname = xstrdup(rep->r_client);
-                       m->ml_directory = xstrdup(rep->r_path);
+
+                       if (reverse_resolve &&
+                          inet_aton((const char *) rep->r_client, &addr) &&
+                          (he = gethostbyaddr(&addr, sizeof(addr), AF_INET)))
+                               m->ml_hostname = xstrdup(he->h_name);
+                       else
+                               m->ml_hostname = xstrdup(rep->r_client);
+
+                       m->ml_directory = xstrdup(rep->r_path);
                        m->ml_next = mlist;
                        mlist = m;
                }