glibc/sysdeps/generic/check_pf.c
Ulrich Drepper 1dc869d13c Update.
* inet/Makefile (aux): Add check_fd.
	* include/ifaddrs.h: Add prototype for __check_fd.
	* sysdeps/generic/check_fd.c: New file.
	* sysdeps/unix/sysv/linux/check_fd.c: New file.
	* sysdeps/unix/sysv/linux/ifaddrs.h (__no_netlink_support): Renamed
	from no_netlink_support.  Export.
	* sysdeps/posix/getaddrinfo.c (getaddrinfo): Don't call getifaddrs,
	call __check_pf.

	* sysdeps/generic/ifaddrs.h: Add libc_hidden_def.
2003-06-10 08:58:05 +00:00

51 lines
1.6 KiB
C

/* Determine protocol families for which interfaces exist. Generic version.
Copyright (C) 2003 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <ifaddrs.h>
#include <netdb.h>
void
attribute_hidden
__check_pf (bool *seen_ipv4, bool *seen_ipv6)
{
/* 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);
}