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b168057a | 1 | /* Copyright (C) 1992-2015 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> |
36f7b1df | 19 | #include <fcntl.h> |
28f540f4 | 20 | #include <sys/socket.h> |
36f7b1df MK |
21 | #include <unistd.h> |
22 | ||
28f540f4 | 23 | #include <hurd.h> |
28f540f4 | 24 | #include <hurd/fd.h> |
36f7b1df | 25 | #include <hurd/socket.h> |
28f540f4 RM |
26 | |
27 | /* Create two new sockets, of type TYPE in domain DOMAIN and using | |
28 | protocol PROTOCOL, which are connected to each other, and put file | |
29 | descriptors for them in FDS[0] and FDS[1]. If PROTOCOL is zero, | |
30 | one will be chosen automatically. Returns 0 on success, -1 for errors. */ | |
31 | int | |
36f7b1df | 32 | __socketpair (int domain, int type, int protocol, int fds[2]) |
28f540f4 RM |
33 | { |
34 | error_t err; | |
35 | socket_t server, sock1, sock2; | |
36 | int d1, d2; | |
37 | ||
38 | if (fds == NULL) | |
39 | return __hurd_fail (EINVAL); | |
40 | ||
41 | /* Find the domain's socket server. */ | |
42 | server = _hurd_socket_server (domain, 0); | |
43 | if (server == MACH_PORT_NULL) | |
44 | return -1; | |
45 | ||
46 | /* Create two sockets and connect them together. */ | |
47 | ||
48 | err = __socket_create (server, type, protocol, &sock1); | |
584de3b9 TBB |
49 | if (err == MACH_SEND_INVALID_DEST || err == MIG_SERVER_DIED |
50 | || err == MIG_BAD_ID || err == EOPNOTSUPP) | |
28f540f4 RM |
51 | { |
52 | /* On the first use of the socket server during the operation, | |
53 | allow for the old server port dying. */ | |
54 | server = _hurd_socket_server (domain, 1); | |
55 | if (server == MACH_PORT_NULL) | |
56 | return -1; | |
57 | err = __socket_create (server, type, protocol, &sock1); | |
58 | } | |
59 | if (err) | |
60 | return __hurd_fail (err); | |
61 | if (err = __socket_create (server, type, protocol, &sock2)) | |
62 | { | |
63 | __mach_port_deallocate (__mach_task_self (), sock1); | |
64 | return __hurd_fail (err); | |
65 | } | |
66 | if (err = __socket_connect2 (sock1, sock2)) | |
67 | { | |
68 | __mach_port_deallocate (__mach_task_self (), sock1); | |
69 | __mach_port_deallocate (__mach_task_self (), sock2); | |
70 | return __hurd_fail (err); | |
71 | } | |
72 | ||
73 | /* Put the sockets into file descriptors. */ | |
74 | ||
75 | d1 = _hurd_intern_fd (sock1, O_IGNORE_CTTY, 1); | |
76 | if (d1 < 0) | |
77 | { | |
78 | __mach_port_deallocate (__mach_task_self (), sock2); | |
79 | return -1; | |
80 | } | |
81 | d2 = _hurd_intern_fd (sock2, O_IGNORE_CTTY, 1); | |
82 | if (d2 < 0) | |
83 | { | |
84 | err = errno; | |
85 | (void) close (d1); | |
86 | return __hurd_fail (err); | |
87 | } | |
88 | ||
89 | fds[0] = d1; | |
90 | fds[1] = d2; | |
91 | return 0; | |
92 | } | |
36f7b1df MK |
93 | |
94 | weak_alias (__socketpair, socketpair) |