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