/*	@(#)system.c	2.2	SCCS id keyword	*/
#include	<whoami.h>
#include	<signal.h>

#ifdef UCB_SHELL
char	*getenv();
#endif

system(s)
char *s;
{
	int status, pid, w;
	register int (*istat)(), (*qstat)();

#ifdef	VIRUS_VFORK
	if ((pid = vfork()) == 0) {
#else
	if ((pid = fork()) == 0) {
#endif
#ifdef UCB_SHELL
		char	*shell;
		if (!(shell == getenv("SHELL")))
			shell = UCB_SHELL;
		execl(shell, shell, "-c", s, 0);
#else
		execl("/bin/sh", "sh", "-c", s, 0);
#endif
		_exit(127);
	}
	istat = signal(SIGINT, SIG_IGN);
	qstat = signal(SIGQUIT, SIG_IGN);
	while ((w = wait(&status)) != pid && w != -1)
		;
	if (w == -1)
		status = -1;
	signal(SIGINT, istat);
	signal(SIGQUIT, qstat);
	return(status);
}