]>
Commit | Line | Data |
---|---|---|
28f540f4 RM |
1 | /* Copyright (C) 1992, 1994 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 Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | 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 | Library General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Library General Public | |
15 | License along with the GNU C Library; see the file COPYING.LIB. If | |
16 | not, write to the Free Software Foundation, Inc., 675 Mass Ave, | |
17 | Cambridge, MA 02139, USA. */ | |
18 | ||
19 | #include <ansidecl.h> | |
20 | #include <errno.h> | |
21 | #include <sys/socket.h> | |
22 | #include <hurd.h> | |
23 | #include <hurd/socket.h> | |
24 | #include <hurd/fd.h> | |
25 | #include <unistd.h> | |
26 | #include <fcntl.h> | |
27 | ||
28 | /* Create two new sockets, of type TYPE in domain DOMAIN and using | |
29 | protocol PROTOCOL, which are connected to each other, and put file | |
30 | descriptors for them in FDS[0] and FDS[1]. If PROTOCOL is zero, | |
31 | one will be chosen automatically. Returns 0 on success, -1 for errors. */ | |
32 | int | |
33 | DEFUN(socketpair, (domain, type, protocol, fds), | |
34 | int domain AND enum __socket_type type AND int protocol AND int fds[2]) | |
35 | { | |
36 | error_t err; | |
37 | socket_t server, sock1, sock2; | |
38 | int d1, d2; | |
39 | ||
40 | if (fds == NULL) | |
41 | return __hurd_fail (EINVAL); | |
42 | ||
43 | /* Find the domain's socket server. */ | |
44 | server = _hurd_socket_server (domain, 0); | |
45 | if (server == MACH_PORT_NULL) | |
46 | return -1; | |
47 | ||
48 | /* Create two sockets and connect them together. */ | |
49 | ||
50 | err = __socket_create (server, type, protocol, &sock1); | |
51 | if (err == MACH_SEND_INVALID_DEST || err == MIG_SERVER_DIED) | |
52 | { | |
53 | /* On the first use of the socket server during the operation, | |
54 | allow for the old server port dying. */ | |
55 | server = _hurd_socket_server (domain, 1); | |
56 | if (server == MACH_PORT_NULL) | |
57 | return -1; | |
58 | err = __socket_create (server, type, protocol, &sock1); | |
59 | } | |
60 | if (err) | |
61 | return __hurd_fail (err); | |
62 | if (err = __socket_create (server, type, protocol, &sock2)) | |
63 | { | |
64 | __mach_port_deallocate (__mach_task_self (), sock1); | |
65 | return __hurd_fail (err); | |
66 | } | |
67 | if (err = __socket_connect2 (sock1, sock2)) | |
68 | { | |
69 | __mach_port_deallocate (__mach_task_self (), sock1); | |
70 | __mach_port_deallocate (__mach_task_self (), sock2); | |
71 | return __hurd_fail (err); | |
72 | } | |
73 | ||
74 | /* Put the sockets into file descriptors. */ | |
75 | ||
76 | d1 = _hurd_intern_fd (sock1, O_IGNORE_CTTY, 1); | |
77 | if (d1 < 0) | |
78 | { | |
79 | __mach_port_deallocate (__mach_task_self (), sock2); | |
80 | return -1; | |
81 | } | |
82 | d2 = _hurd_intern_fd (sock2, O_IGNORE_CTTY, 1); | |
83 | if (d2 < 0) | |
84 | { | |
85 | err = errno; | |
86 | (void) close (d1); | |
87 | return __hurd_fail (err); | |
88 | } | |
89 | ||
90 | fds[0] = d1; | |
91 | fds[1] = d2; | |
92 | return 0; | |
93 | } |