2.9BSD - /usr/src/ucb/berknet/netstart.c

   1: # include "defs.h"
   2: /*
   3:  * this is a simple program to start up the net daemon,
   4:  * and when it fails, restart it
   5:  *
   6:  */
   7: static int daemon = 32767;      /* a nice safe process number */
   8: main(argc,argv)
   9:   char **argv; {
  10:     int r,killit(),pid;
  11:     while((pid = fork()) == -1)sleep(2);
  12:     if(pid != 0)exit(EX_OK);
  13:     submit(getpid());
  14:     signal(SIGQUIT,SIG_IGN);
  15:     signal(SIGHUP,SIG_IGN);
  16:     signal(SIGINT,SIG_IGN);
  17:     signal(SIGTERM,killit);
  18:     /* will set remote */
  19:     parseargs(argc,argv);
  20:     addtolog(remote,"Netstart started, process id #%d\n",getpid());
  21:     for(;;){
  22:         while((daemon=fork()) == -1)sleep(2);
  23:         if(daemon == 0){
  24:             argv[0] = "netdaemon";
  25:             argv[argc] = 0;
  26:             execv(NETDAEMON,argv);
  27:             exit(EX_UNAVAILABLE);
  28:             }
  29:         wait(&r);
  30:         addtolog(remote,"Net daemon exit code %d, low byte 0%o\n",
  31:             (r>>8), (r&0377));
  32:         sleep(100);     /* avoid looping too fast */
  33:         }
  34:     }
  35: killit(){
  36:     kill(daemon,SIGTERM);       /* send terminate */
  37:     sleep(2);           /* wait till cleanup */
  38:     kill(daemon,SIGKILL);       /* kill in case too */
  39:     exit(EX_OK);
  40:     }
  41: /* add to allow netstart.c to load */
  42: initseqno(){};

Defined functions

Defined variables