1  /* getifaddrs -- get names and addresses of all network interfaces
       2     Copyright (C) 2002-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       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     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <ifaddrs.h>
      20  #include <errno.h>
      21  #include <stdlib.h>
      22  
      23  /* Create a linked list of `struct ifaddrs' structures, one for each
      24     network interface on the host machine.  If successful, store the
      25     list in *IFAP and return 0.  On errors, return -1 and set `errno'.  */
      26  int
      27  __getifaddrs (struct ifaddrs **ifap)
      28  {
      29    __set_errno (ENOSYS);
      30    return -1;
      31  }
      32  weak_alias (__getifaddrs, getifaddrs)
      33  libc_hidden_def (__getifaddrs)
      34  libc_hidden_weak (getifaddrs)
      35  stub_warning (getifaddrs)
      36  
      37  void
      38  __freeifaddrs (struct ifaddrs *ifa)
      39  {
      40    if (ifa == NULL)
      41      return;			/* a la free, why not? */
      42  
      43    /* Can't be called properly if getifaddrs never succeeded.  */
      44    abort ();
      45  }
      46  weak_alias (__freeifaddrs, freeifaddrs)
      47  libc_hidden_def (__freeifaddrs)
      48  libc_hidden_weak (freeifaddrs)
      49  stub_warning (freeifaddrs)