1: /* Test interface name <-> index conversions.
    2:    Copyright (C) 1997, 2000, 2005 Free Software Foundation, Inc.
    3:    This file is part of the GNU C Library.
    4:    Contributed by Philip Blundell <Philip.Blundell@pobox.com>.
    5: 
    6:    The GNU C Library is free software; you can redistribute it and/or
    7:    modify it under the terms of the GNU Lesser General Public
    8:    License as published by the Free Software Foundation; either
    9:    version 2.1 of the License, or (at your option) any later version.
   10: 
   11:    The GNU C Library is distributed in the hope that it will be useful,
   12:    but WITHOUT ANY WARRANTY; without even the implied warranty of
   13:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   14:    Lesser General Public License for more details.
   15: 
   16:    You should have received a copy of the GNU Lesser General Public
   17:    License along with the GNU C Library; if not, write to the Free
   18:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   19:    02111-1307 USA.  */
   20: 
   21: #include <errno.h>
   22: #include <stdio.h>
   23: #include <stdlib.h>
   24: #include <string.h>
   25: #include <net/if.h>
   26: 
   27: static int
   28: do_test (void)
   29: {
   30:   int failures = 0;
   31:   struct if_nameindex *idx = if_nameindex (), *p;
   32:   if (idx == NULL)
   33:     {
   34:       if (errno != ENOSYS)
   35:         {
   36:           printf ("Couldn't get any interfaces.\n");
   37:           exit (1);
   38:         }
   39:       /* The function is simply not implemented.  */
   40:       exit (0);
   41:     }
   42: 
   43:   printf ("Idx            Name | Idx           Name\n");
   44: 
   45:   for (p = idx; p->if_index || p->if_name; ++p)
   46:     {
   47:       char buf[IFNAMSIZ];
   48:       unsigned int ni;
   49:       int result;
   50:       printf ("%3d %15s | ", p->if_index, p->if_name);
   51:       printf ("%3d", ni = if_nametoindex (p->if_name));
   52:       printf ("%15s", if_indextoname (p->if_index, buf));
   53:       result = (ni != p->if_index || (strcmp (buf, p->if_name)));
   54:       if (ni == p->if_index)
   55:         /* We have to make sure that this is not an alias with the
   56:            same interface number.  */
   57:         if (p->if_index == if_nametoindex (buf))
   58:           result = 0;
   59:       printf ("%10s", result ? "fail" : "okay");
   60:       printf ("\n");
   61:       failures += result;
   62:     }
   63:   if_freenameindex (idx);
   64:   return failures ? 1 : 0;
   65: }
   66: 
   67: #define TEST_FUNCTION do_test ()
   68: #include "../test-skeleton.c"