[unix-history] / usr / src / games / trek / shell.c

/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#ifndef lint
static char sccsid[] = "@(#)shell.c	5.1 (Berkeley) %G%";
#endif not lint

/*
**  CALL THE SHELL
*/

shell()
{
	int		i;
	register int	pid;
	register int	sav2, sav3;

	if (!(pid = fork()))
	{
		setuid(getuid());
		nice(0);
		execl("/bin/csh", "-", 0);
		syserr("cannot execute /bin/csh");
	}
	sav2 = signal(2, 1);
	sav3 = signal(3, 1);
	while (wait(&i) != pid) ;
	signal(2, sav2);
	signal(3, sav3);
}
Commit	Line	Data
bb0cfa24 DF	1	/*
	2	* Copyright (c) 1980 Regents of the University of California.
	3	* All rights reserved. The Berkeley software License Agreement
	4	* specifies the terms and conditions for redistribution.
	5	*/
	6
9d9faa64	7	#ifndef lint
bb0cfa24	8	static char sccsid[] = "@(#)shell.c 5.1 (Berkeley) %G%";
9d9faa64 KM	9	#endif not lint
	10
	11	/*
	12	** CALL THE SHELL
	13	*/
	14
	15	shell()
	16	{
	17	int i;
	18	register int pid;
	19	register int sav2, sav3;
	20
	21	if (!(pid = fork()))
	22	{
	23	setuid(getuid());
	24	nice(0);
773f1498 KL	25	execl("/bin/csh", "-", 0);
773f1498 KL	26	syserr("cannot execute /bin/csh");
9d9faa64 KM	27	}
	28	sav2 = signal(2, 1);
	29	sav3 = signal(3, 1);
	30	while (wait(&i) != pid) ;
	31	signal(2, sav2);
	32	signal(3, sav3);
	33	}