/*
 * |-----------------------------------------------------------|
 * | Copyright (c) 1991, 1990 MIPS Computer Systems, Inc.      |
 * | All Rights Reserved                                       |
 * |-----------------------------------------------------------|
 * |          Restricted Rights Legend                         |
 * | Use, duplication, or disclosure by the Government is      |
 * | subject to restrictions as set forth in                   |
 * | subparagraph (c)(1)(ii) of the Rights in Technical        |
 * | Data and Computer Software Clause of DFARS 252.227-7013.  |
 * |         MIPS Computer Systems, Inc.                       |
 * |         950 DeGuigne Avenue                               |
 * |         Sunnyvale, California 94088-3650, USA             |
 * |-----------------------------------------------------------|
 */
#ident	"$Header: system.c,v 1.10.2.1 92/06/24 14:01:45 marker Exp $"

/*	Copyright (c) 1984 AT&T	*/
/*	  All Rights Reserved  	*/

/*	THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T	*/
/*	The copyright notice above does not evidence any   	*/
/*	actual or intended publication of such source code.	*/

/*LINTLIBRARY*/
#include <signal.h>

static char bin_shell[] = "/bin/sh";
static char shell[] = "sh";
static char shflg[]= "-c";

extern int fork(), execl(), wait();

#if defined(__STDC__)

int      system (const char *s)

#else

int
system(s)
char	*s;

#endif
{
	int	status, pid, w;
	register void (*istat)(), (*qstat)();

	if((pid = fork()) == 0) {
		(void) execl(bin_shell, shell, shflg, s, (char *)0);
		_exit(127);
	}
	istat = signal(SIGINT, SIG_IGN);
	qstat = signal(SIGQUIT, SIG_IGN);
	while((w = wait(&status)) != pid && w != -1)
		;
	(void) signal(SIGINT, istat);
	(void) signal(SIGQUIT, qstat);
	return((w == -1)? w: status);
}
