inet/bug-if1.c

   1 /* Copyright (C) 2004-2018 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@redhat.com>, 2004.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <limits.h>
  21 #include <stdio.h>
  22 #include <string.h>
  23 #include <net/if.h>
  24
  25
  26 static int
  27 do_test (void)
  28 {
  29   char buf[IF_NAMESIZE];
  30   /* Index 0 is always invalid (see RFC 3493).  */
  31   char *cp = if_indextoname (0, buf);
  32   if (cp != NULL)
  33     {
  34       printf ("invalid index returned result \"%s\"\n", cp);
  35       return 1;
  36     }
  37   else if (errno != ENXIO)
  38     {
  39       int err = errno;
  40       char errbuf1[256];
  41       char errbuf2[256];
  42
  43       printf ("errno = %d (%s), expected %d (%s)\n",
  44               err, strerror_r (err, errbuf1, sizeof (errbuf1)),
  45               ENXIO, strerror_r (ENXIO, errbuf2, sizeof (errbuf2)));
  46       return 1;
  47     }
  48
  49   return 0;
  50 }
  51
  52 #define TEST_FUNCTION do_test ()
  53 #include "../test-skeleton.c"