[unix-history] / usr / src / libc / stdio / system.c

#include	<signal.h>

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

	if ((pid = vfork()) == 0) {
		execl("/bin/sh", "sh", "-c", s, 0);
		_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);
}
Commit	Line	Data
9c8fc5ca BJ	1	#include <signal.h>
	2
	3	system(s)
	4	char *s;
	5	{
	6	int status, pid, w;
	7	register int (istat)(), (qstat)();
	8
	9	if ((pid = vfork()) == 0) {
	10	execl("/bin/sh", "sh", "-c", s, 0);
	11	_exit(127);
	12	}
	13	istat = signal(SIGINT, SIG_IGN);
	14	qstat = signal(SIGQUIT, SIG_IGN);
	15	while ((w = wait(&status)) != pid && w != -1)
	16	;
	17	if (w == -1)
	18	status = -1;
	19	signal(SIGINT, istat);
	20	signal(SIGQUIT, qstat);
	21	return(status);
	22	}