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Annotation of 43BSD/contrib/mh/sbr/push.c, revision 1.1

1.1     ! root        1: /* push.c - push a fork into the background */
        !             2: 
        !             3: #include "../h/mh.h"
        !             4: #include <stdio.h>
        !             5: #include <signal.h>
        !             6: 
        !             7: 
        !             8: void   push () {
        !             9:     register int     i;
        !            10: 
        !            11:     for (i = 0; i < 5; i++) {
        !            12:        switch (fork ()) {
        !            13:            case NOTOK: 
        !            14:                sleep (5);
        !            15:                continue;
        !            16: 
        !            17:            case OK: 
        !            18:                (void) signal (SIGHUP, SIG_IGN);
        !            19:                (void) signal (SIGINT, SIG_IGN);
        !            20:                (void) signal (SIGQUIT, SIG_IGN);
        !            21:                (void) signal (SIGTERM, SIG_IGN);
        !            22: #ifdef SIGTSTP
        !            23:                (void) signal (SIGTSTP, SIG_IGN);
        !            24:                (void) signal (SIGTTIN, SIG_IGN);
        !            25:                (void) signal (SIGTTOU, SIG_IGN);
        !            26: #endif SIGTSTP
        !            27:                (void) freopen ("/dev/null", "r", stdin);
        !            28:                (void) freopen ("/dev/null", "w", stdout);
        !            29:                break;
        !            30: 
        !            31:            default: 
        !            32:                done (0);
        !            33:        }
        !            34:        break;
        !            35:     }
        !            36:     if (i >= 5)
        !            37:        advise (NULLCP, "unable to fork, so can't push...");
        !            38: }

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