1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/*
* Copyright (c) 1997-1999 University of Utah and the Flux Group.
* All rights reserved.
*
* This file is part of the Flux OSKit. The OSKit is free software, also known
* as "open source;" you can redistribute it and/or modify it under the terms
* of the GNU General Public License (GPL), version 2, as published by the Free
* Software Foundation (FSF). To explore alternate licensing terms, contact
* the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.
*
* The OSKit is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GPL for more details. You should have
* received a copy of the GPL along with the OSKit; see the file COPYING. If
* not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <stdlib.h>
#include "fd.h"
#include <oskit/c/environment.h>
static oskit_socket_factory_t *fsc;
/*
* Create a pair of connected sockets.
*/
int
socketpair(int domain, int type, int protocol, int out_fd[2])
{
oskit_error_t rc;
oskit_socket_t *sock1, *sock2;
int fd1, fd2;
if (fsc == 0) {
/* note that lookup_first always returns null */
oskit_library_services_lookup(&oskit_socket_factory_iid,
(void *) &fsc);
}
if (fsc == 0) {
/*
* If we don't have a socket factory,
* we just don't support any protocols...
*/
errno = EPROTONOSUPPORT;
return -1;
}
/* Create the socketpair */
rc = oskit_socket_factory_create_pair(fsc, domain, type, protocol,
&sock1, &sock2);
if (rc) {
errno = rc;
return -1;
}
/* Allocate a file descriptor for it */
fd1 = fd_alloc((oskit_iunknown_t*)sock1, 0);
if (fd1 < 0) {
oskit_socket_release(sock1);
oskit_socket_release(sock2);
return -1;
}
fd2 = fd_alloc((oskit_iunknown_t*)sock2, 0);
if (fd2 < 0) {
fd_free(fd1);
oskit_socket_release(sock1);
oskit_socket_release(sock2);
return -1;
}
fd_lock(fd1); /* XXX want to lock for both together */
fd_array[fd1].socket = sock1;
fd_unlock(fd1);
fd_lock(fd2);
fd_array[fd2].socket = sock2;
fd_unlock(fd2);
out_fd[0] = fd1;
out_fd[1] = fd2;
return 0;
}
|
