bug-if1.c 1.6 KB

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  1. /* Copyright (C) 2004 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. Contributed by Ulrich Drepper <drepper@redhat.com>, 2004.
  4. The GNU C Library is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU Lesser General Public
  6. License as published by the Free Software Foundation; either
  7. version 2.1 of the License, or (at your option) any later version.
  8. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Lesser General Public License for more details.
  12. You should have received a copy of the GNU Lesser General Public
  13. License along with the GNU C Library; if not, write to the Free
  14. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  15. 02111-1307 USA. */
  16. #include <errno.h>
  17. #include <limits.h>
  18. #include <stdio.h>
  19. #include <string.h>
  20. #include <net/if.h>
  21. static int
  22. do_test (void)
  23. {
  24. char buf[IF_NAMESIZE];
  25. /* Index 0 is always invalid (see RFC 3493). */
  26. char *cp = if_indextoname (0, buf);
  27. if (cp != NULL)
  28. {
  29. printf ("invalid index returned result \"%s\"\n", cp);
  30. return 1;
  31. }
  32. else if (errno != ENXIO)
  33. {
  34. int err = errno;
  35. char errbuf1[256];
  36. char errbuf2[256];
  37. printf ("errno = %d (%s), expected %d (%s)\n",
  38. err, strerror_r (err, errbuf1, sizeof (errbuf1)),
  39. ENXIO, strerror_r (ENXIO, errbuf2, sizeof (errbuf2)));
  40. return 1;
  41. }
  42. return 0;
  43. }
  44. #define TEST_FUNCTION do_test ()
  45. #include "../test-skeleton.c"