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Annotation of 43BSD/contrib/mh/sbr/push.c, revision 1.1.1.1

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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