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Annotation of 43BSD/games/trek/shell.c, revision 1.1

1.1     ! root        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: 
        !             7: #ifndef lint
        !             8: static char sccsid[] = "@(#)shell.c    5.1 (Berkeley) 5/30/85";
        !             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);
        !            25:                execl("/bin/csh", "-", 0);
        !            26:                syserr("cannot execute /bin/csh");
        !            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: }

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