tests/regression/ust/daemon/daemon.c

   1 /*
   2  * Copyright (C) 2009  Pierre-Marc Fournier
   3  * Copyright (C) 2011-2012  Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   4  *
   5  * SPDX-License-Identifier: LGPL-2.1-only
   6  *
   7  */
   8
   9 #include <stdio.h>
  10 #include <unistd.h>
  11 #include <sys/types.h>
  12 #include <stdlib.h>
  13
  14 #define TRACEPOINT_DEFINE
  15 #define TRACEPOINT_CREATE_PROBES
  16 #include "ust_tests_daemon.h"
  17
  18 int main(int argc, char **argv, char *env[])
  19 {
  20         int result;
  21
  22         if (argc < 1) {
  23                 fprintf(stderr, "usage: daemon\n");
  24                 exit(1);
  25         }
  26
  27         pid_t parent_pid = getpid();
  28         printf("parent_pid %d\n", parent_pid);
  29         tracepoint(ust_tests_daemon, before_daemon, parent_pid);
  30
  31         result = daemon(0, 1);
  32         if (result == 0) {
  33                 printf("child_pid %d\n", getpid());
  34
  35                 tracepoint(ust_tests_daemon, after_daemon_child, getpid());
  36         } else {
  37                 tracepoint(ust_tests_daemon, after_daemon_parent);
  38                 perror("daemon");
  39                 exit(1);
  40         }
  41
  42         return 0;
  43 }