/* Determine protocol families for which interfaces exist.  Generic version.

   Copyright (C) 2003-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <ifaddrs.h>

#include <netdb.h>

#include <stdint.h>

void

attribute_hidden

__check_pf (bool *seen_ipv4, bool *seen_ipv6,

	    struct in6addrinfo **in6ai, size_t *in6ailen)

{

  /* By default we have no way to determine information about

     deprecated and temporary addresses.  */

  *in6ai = NULL;

  *in6ailen = 0;

  /* Get the interface list via getifaddrs.  */

  struct ifaddrs *ifa = NULL;

  if (__getifaddrs (&ifa) != 0)

    {

      /* We cannot determine what interfaces are available.  Be

	 pessimistic.  */

      *seen_ipv4 = true;

      *seen_ipv6 = true;

      return;

    }

  *seen_ipv4 = false;

  *seen_ipv6 = false;

  struct ifaddrs *runp;

  for (runp = ifa; runp != NULL; runp = runp->ifa_next)

    if (runp->ifa_addr->sa_family == PF_INET)

      *seen_ipv4 = true;

    else if (runp->ifa_addr->sa_family == PF_INET6)

      *seen_ipv6 = true;

  (void) __freeifaddrs (ifa);

}

void

__free_in6ai (struct in6addrinfo *in6ai)

{

  /* Nothing to do.  */

}

#if IS_IN (nscd)

uint32_t

__bump_nl_timestamp (void)

{

  return 0;

}

#endif