| /* Fetch the host's network interface list. Hurd version. |
| Copyright (C) 2002-2014 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 <ifreq.h> |
| #include <hurd.h> |
| #include <hurd/pfinet.h> |
| #include <sys/mman.h> |
| |
| |
| 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; |
| } |
| |
| } |