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
__getsockname(int fd,__SOCKADDR_ARG addrarg,socklen_t * len)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