4.3BSD - /usr/src/new/mh/sbr/push.c

   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: }

Defined functions