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7f1deee6 | 1 | /* Fetch the host's network interface list. Hurd version. |
2b778ceb | 2 | Copyright (C) 2002-2021 Free Software Foundation, Inc. |
7f1deee6 RM |
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 | |
59ba27a6 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
7f1deee6 | 18 | |
8dea90aa RM |
19 | #include <ifreq.h> |
20 | #include <hurd.h> | |
21 | #include <hurd/pfinet.h> | |
22 | #include <sys/mman.h> | |
23 | ||
24 | ||
287058ea | 25 | void |
7f1deee6 RM |
26 | __ifreq (struct ifreq **ifreqs, int *num_ifs, int sockfd) |
27 | { | |
7f1deee6 RM |
28 | file_t server; |
29 | ||
30 | server = _hurd_socket_server (PF_INET, 0); | |
31 | if (server == MACH_PORT_NULL) | |
32 | { | |
33 | out: | |
34 | *num_ifs = 0; | |
35 | *ifreqs = NULL; | |
36 | } | |
37 | else | |
38 | { | |
39 | char *data = NULL; | |
40 | size_t len = 0; | |
41 | error_t err = __pfinet_siocgifconf (server, -1, &data, &len); | |
42 | if (err == MACH_SEND_INVALID_DEST || err == MIG_SERVER_DIED) | |
43 | { | |
44 | /* On the first use of the socket server during the operation, | |
45 | allow for the old server port dying. */ | |
46 | server = _hurd_socket_server (PF_INET, 1); | |
47 | if (server == MACH_PORT_NULL) | |
48 | goto out; | |
20acbc25 | 49 | err = __pfinet_siocgifconf (server, -1, (data_t *) ifreqs, &len); |
7f1deee6 RM |
50 | } |
51 | if (err) | |
52 | goto out; | |
53 | ||
54 | if (len % sizeof (struct ifreq) != 0) | |
55 | { | |
dba2bdbe | 56 | __munmap (data, len); |
7f1deee6 RM |
57 | errno = EGRATUITOUS; |
58 | goto out; | |
59 | } | |
60 | *num_ifs = len / sizeof (struct ifreq); | |
61 | *ifreqs = (struct ifreq *) data; | |
62 | } | |
63 | ||
64 | } |