1/***********************************************************************
2*                                                                      *
3*               This software is part of the ast package               *
4*          Copyright (c) 1985-2011 AT&T Intellectual Property          *
5*                      and is licensed under the                       *
6*                  Common Public License, Version 1.0                  *
7*                    by AT&T Intellectual Property                     *
8*                                                                      *
9*                A copy of the License is available at                 *
10*            http://www.opensource.org/licenses/cpl1.0.txt             *
11*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
12*                                                                      *
13*              Information and Software Systems Research               *
14*                            AT&T Research                             *
15*                           Florham Park NJ                            *
16*                                                                      *
17*                 Glenn Fowler <gsf@research.att.com>                  *
18*                  David Korn <dgk@research.att.com>                   *
19*                   Phong Vo <kpv@research.att.com>                    *
20*                                                                      *
21***********************************************************************/
22#pragma prototyped
23
24#include <ast.h>
25
26#if _lib_vfork
27
28NoN(vfork)
29
30#else
31
32#include <error.h>
33
34#ifndef ENOSYS
35#define ENOSYS		EINVAL
36#endif
37
38#undef	vfork
39
40#if defined(__EXPORT__)
41#define extern	__EXPORT__
42#endif
43
44extern pid_t
45vfork(void)
46{
47#if _lib_fork
48	return(fork());
49#else
50	errno = ENOSYS;
51	return -1;
52#endif
53}
54
55#endif
56