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Annotation of 43BSDTahoe/games/trek/shell.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1980 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms are permitted
                      6:  * provided that the above copyright notice and this paragraph are
                      7:  * duplicated in all such forms and that any documentation,
                      8:  * advertising materials, and other materials related to such
                      9:  * distribution and use acknowledge that the software was developed
                     10:  * by the University of California, Berkeley.  The name of the
                     11:  * University may not be used to endorse or promote products derived
                     12:  * from this software without specific prior written permission.
                     13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     16:  */
                     17: 
                     18: #ifndef lint
                     19: static char sccsid[] = "@(#)shell.c    5.3 (Berkeley) 6/18/88";
                     20: #endif /* not lint */
                     21: 
                     22: /*
                     23: **  CALL THE SHELL
                     24: */
                     25: 
                     26: shell()
                     27: {
                     28:        int             i;
                     29:        register int    pid;
                     30:        register int    sav2, sav3;
                     31: 
                     32:        if (!(pid = fork()))
                     33:        {
                     34:                setuid(getuid());
                     35:                nice(0);
                     36:                execl("/bin/csh", "-", 0);
                     37:                syserr("cannot execute /bin/csh");
                     38:        }
                     39:        sav2 = signal(2, 1);
                     40:        sav3 = signal(3, 1);
                     41:        while (wait(&i) != pid) ;
                     42:        signal(2, sav2);
                     43:        signal(3, sav3);
                     44: }

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