1 | /* Copyright (C) 1992-2022 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <errno.h> |
19 | #include <string.h> |
20 | #include <sys/socket.h> |
21 | #include <hurd.h> |
22 | #include <hurd/fd.h> |
23 | #include <hurd/socket.h> |
24 | |
25 | /* Put the local address of FD into *ADDR and its length in *LEN. */ |
26 | int |
27 | __getsockname (int fd, __SOCKADDR_ARG addrarg, socklen_t *len) |
28 | { |
29 | error_t err; |
30 | struct sockaddr *addr = addrarg.__sockaddr__; |
31 | char *buf = (char *) addr; |
32 | mach_msg_type_number_t buflen = *len; |
33 | int type; |
34 | addr_port_t aport; |
35 | |
36 | if (err = HURD_DPORT_USE (fd, __socket_name (port, &aport))) |
37 | return __hurd_dfail (fd, err); |
38 | |
39 | err = __socket_whatis_address (aport, &type, &buf, &buflen); |
40 | __mach_port_deallocate (__mach_task_self (), aport); |
41 | |
42 | if (err) |
43 | return __hurd_dfail (fd, err); |
44 | |
45 | if (*len > buflen) |
46 | *len = buflen; |
47 | |
48 | if (buf != (char *) addr) |
49 | { |
50 | memcpy (addr, buf, *len); |
51 | __vm_deallocate (__mach_task_self (), (vm_address_t) buf, buflen); |
52 | } |
53 | |
54 | addr->sa_family = type; |
55 | |
56 | return 0; |
57 | } |
58 | |
59 | weak_alias (__getsockname, getsockname) |
60 | |