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688903eb | 1 | /* Copyright (C) 1992-2018 Free Software Foundation, Inc. |
ebbad4cc | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
ebbad4cc | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
28f540f4 | 8 | |
ebbad4cc UD |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
28f540f4 | 17 | |
28f540f4 | 18 | #include <errno.h> |
0fd43249 | 19 | #include <string.h> |
28f540f4 | 20 | #include <sys/socket.h> |
b222360c | 21 | |
28f540f4 RM |
22 | #include <hurd.h> |
23 | #include <hurd/fd.h> | |
24 | #include <hurd/socket.h> | |
28f540f4 RM |
25 | |
26 | /* Put the address of the peer connected to socket FD into *ADDR | |
27 | (which is *LEN bytes long), and its actual length into *LEN. */ | |
28 | int | |
b222360c | 29 | __getpeername (int fd, __SOCKADDR_ARG addrarg, socklen_t *len) |
28f540f4 RM |
30 | { |
31 | error_t err; | |
28f540f4 RM |
32 | mach_msg_type_number_t buflen = *len; |
33 | int type; | |
ae1025be UD |
34 | struct sockaddr *addr = addrarg.__sockaddr__; |
35 | char *buf = (char *) addr; | |
28f540f4 RM |
36 | addr_port_t aport; |
37 | ||
38 | if (err = HURD_DPORT_USE (fd, __socket_peername (port, &aport))) | |
39 | return __hurd_dfail (fd, err); | |
40 | ||
41 | err = __socket_whatis_address (aport, &type, &buf, &buflen); | |
42 | __mach_port_deallocate (__mach_task_self (), aport); | |
43 | ||
44 | if (err) | |
45 | return __hurd_dfail (fd, err); | |
46 | ||
0fd43249 RM |
47 | if (*len > buflen) |
48 | *len = buflen; | |
0faa1cf5 | 49 | |
28f540f4 RM |
50 | if (buf != (char *) addr) |
51 | { | |
28f540f4 RM |
52 | memcpy (addr, buf, *len); |
53 | __vm_deallocate (__mach_task_self (), (vm_address_t) buf, buflen); | |
54 | } | |
55 | ||
0faa1cf5 | 56 | const sa_family_t family = type; |
2ba7a64c RM |
57 | if (*len > offsetof (struct sockaddr, sa_family)) |
58 | { | |
59 | if (*len < (char *) (&addr->sa_family + 1) - (char *) addr) | |
60 | memcpy (&addr->sa_family, &family, | |
61 | *len - offsetof (struct sockaddr, sa_family)); | |
62 | else | |
63 | addr->sa_family = family; | |
64 | } | |
28f540f4 RM |
65 | |
66 | return 0; | |
67 | } | |
b222360c MK |
68 | |
69 | weak_alias (__getpeername, getpeername) |