glibc/sysdeps/mach/hurd/ifreq.h
Roland McGrath 9db6ee8d2f * sysdeps/generic/ifreq.h (__if_nextreq): New function.
* sysdeps/unix/sysv/linux/ifreq.h (__if_nextreq): New function.
	* sysdeps/mach/hurd/ifreq.h (__if_nextreq): New function.
	* sysdeps/gnu/ifaddrs.c (getifaddrs): Use __if_nextreq
	for iterating through the list of interfaces.
	* resolv/res_hconf.c (_res_hconf_reorder_addrs): Likewise.

	* sysdeps/unix/grantpt.c (pts_name): Set errno when __ptsname_r fails.
	Reported by Bruno Haible <bruno@clisp.org>.
2002-09-20 20:34:06 +00:00

81 lines
2.1 KiB
C

/* Fetch the host's network interface list. Hurd version.
Copyright (C) 2002 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 <net/if.h>
#include <hurd.h>
#include <hurd/pfinet.h>
#include <sys/socket.h>
#include <sys/mman.h>
static inline void
__ifreq (struct ifreq **ifreqs, int *num_ifs, int sockfd)
{
file_t server;
server = _hurd_socket_server (PF_INET, 0);
if (server == MACH_PORT_NULL)
{
out:
*num_ifs = 0;
*ifreqs = NULL;
}
else
{
char *data = NULL;
size_t len = 0;
error_t err = __pfinet_siocgifconf (server, -1, &data, &len);
if (err == MACH_SEND_INVALID_DEST || err == MIG_SERVER_DIED)
{
/* On the first use of the socket server during the operation,
allow for the old server port dying. */
server = _hurd_socket_server (PF_INET, 1);
if (server == MACH_PORT_NULL)
goto out;
err = __pfinet_siocgifconf (server, -1, (data_t *) ifreqs, &len);
}
if (err)
goto out;
if (len % sizeof (struct ifreq) != 0)
{
munmap (data, len);
errno = EGRATUITOUS;
goto out;
}
*num_ifs = len / sizeof (struct ifreq);
*ifreqs = (struct ifreq *) data;
}
}
static inline struct ifreq *
__if_nextreq (struct ifreq *ifr)
{
return ifr + 1;
}
static inline void
__if_freereq (struct ifreq *ifreqs, int num_ifs)
{
__munmap (ifreqs, num_ifs * sizeof (struct ifreq));
}