[bug-inetutils] [PATCH] Fix ifconfig unknown format bug

[Kim Max]

diff -uprN inetutils-1.8-vanila/ifconfig/changeif.c 
inetutils-1.8/ifconfig/changeif.c
--- inetutils-1.8-vanila/ifconfig/changeif.c    2010-05-15 15:48:38.000000000 
+0400
+++ inetutils-1.8/ifconfig/changeif.c   2010-06-29 08:46:36.000000000 +0400
@@ -209,6 +209,17 @@ set_flags (int sfd, struct ifreq *ifr, i
 #endif
 }
 
+static int
+format_check(const char *ftempl)
+{
+  if (!ftempl)
+    {
+      error(0, errno, "unknown format");
+      return -1;
+    }
+  return 0;
+}
+
 int
 configure_if (int sfd, struct ifconfig *ifp)
 {
@@ -219,7 +230,8 @@ configure_if (int sfd, struct ifconfig *
   strncpy (ifr.ifr_name, ifp->name, IFNAMSIZ);
   ifr.ifr_name[IFNAMSIZ - 1] = '\0';
 
-  if (ifp->valid & IF_VALID_ADDR)
+  err = format_check(ifp->format);
+  if (!err && ifp->valid & IF_VALID_ADDR)
     err = set_address (sfd, &ifr, ifp->address);
   if (!err && ifp->valid & IF_VALID_NETMASK)
     err = set_netmask (sfd, &ifr, ifp->netmask);
diff -uprN inetutils-1.8-vanila/ifconfig/options.c 
inetutils-1.8/ifconfig/options.c
--- inetutils-1.8-vanila/ifconfig/options.c     2010-05-15 15:48:38.000000000 
+0400
+++ inetutils-1.8/ifconfig/options.c    2010-06-29 08:47:56.000000000 +0400
@@ -384,7 +384,7 @@ parse_opt_set_default_format (const char
        }
     }
 
-  default_format = format;
+  default_format = NULL;
 }
 
 static int