/* waitdaemon -- Verify that waitdaemon() is functional.
  Copyright (C) 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018,
  2019, 2020, 2021 Free Software Foundation, Inc.

  This file is part of GNU Inetutils.

  GNU Inetutils is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or (at
  your option) any later version.

  GNU Inetutils is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see `http://www.gnu.org/licenses/'. */

/* Verify that waitdaemon() in libinetutils.a is functional.
   This is needed by syslogd.
 */

#include <config.h>

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <signal.h>
#include <errno.h>

#include <error.h>
#include <progname.h>
#include <libinetutils.h>
#include <unused-parameter.h>

extern int waitdaemon (int nochdir, int noclose, int maxwait);

void
doexit (int signo _GL_UNUSED_PARAMETER)
{
  _exit (EXIT_SUCCESS);
}

int
main (int argc _GL_UNUSED_PARAMETER, char *argv[])
{
  pid_t ppid;

  set_program_name (argv[0]);

  signal (SIGTERM, doexit);	/* Parent exits nicely at SIGTERM.  */

  ppid = waitdaemon (0, 0, 5);	/* Five seconds of delay.  */

  /* Child should return here before parent.  */
  if (ppid > 0)
    kill (ppid, SIGTERM);	/* Bless the parent process.  */

  /* Only grand child reaches this statement.  */
  return EXIT_FAILURE;
}
