1/*++
2/* NAME
3/*	duplex_pipe 3
4/* SUMMARY
5/*	local IPD
6/* SYNOPSIS
7/*	#include <iostuff.h>
8/*
9/*	int	duplex_pipe(fds)
10/*	int	*fds;
11/* DESCRIPTION
12/*	duplex_pipe() uses whatever local primitive it takes
13/*	to get a two-way I/O channel.
14/* DIAGNOSTICS
15/*	A null result means success. In case of error, the result
16/*	is -1 and errno is set to the appropriate number.
17/* LICENSE
18/* .ad
19/* .fi
20/*	The Secure Mailer license must be distributed with this software.
21/* AUTHOR(S)
22/*	Wietse Venema
23/*	IBM T.J. Watson Research
24/*	P.O. Box 704
25/*	Yorktown Heights, NY 10598, USA
26/*--*/
27
28/* System libraries */
29
30#include <sys_defs.h>
31#include <sys/socket.h>
32#include <unistd.h>
33
34/* Utility library. */
35
36#include "iostuff.h"
37#include "sane_socketpair.h"
38
39/* duplex_pipe - give me a duplex pipe or bust */
40
41int     duplex_pipe(int *fds)
42{
43#ifdef HAS_DUPLEX_PIPE
44    return (pipe(fds));
45#else
46    return (sane_socketpair(AF_UNIX, SOCK_STREAM, 0, fds));
47#endif
48}
49
50