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) 5/30/85";
#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);
}