ifaddrs.c 1.6 KB

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  1. /* getifaddrs -- get names and addresses of all network interfaces
  2. Copyright (C) 2002-2026 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  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, see
  14. <https://www.gnu.org/licenses/>. */
  15. #include <ifaddrs.h>
  16. #include <errno.h>
  17. #include <stdlib.h>
  18. /* Create a linked list of `struct ifaddrs' structures, one for each
  19. network interface on the host machine. If successful, store the
  20. list in *IFAP and return 0. On errors, return -1 and set `errno'. */
  21. int
  22. __getifaddrs (struct ifaddrs **ifap)
  23. {
  24. __set_errno (ENOSYS);
  25. return -1;
  26. }
  27. weak_alias (__getifaddrs, getifaddrs)
  28. libc_hidden_def (__getifaddrs)
  29. libc_hidden_weak (getifaddrs)
  30. stub_warning (getifaddrs)
  31. void
  32. __freeifaddrs (struct ifaddrs *ifa)
  33. {
  34. if (ifa == NULL)
  35. return; /* a la free, why not? */
  36. /* Can't be called properly if getifaddrs never succeeded. */
  37. abort ();
  38. }
  39. weak_alias (__freeifaddrs, freeifaddrs)
  40. libc_hidden_def (__freeifaddrs)
  41. libc_hidden_weak (freeifaddrs)
  42. stub_warning (freeifaddrs)