/* Copyright (C) 2002-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Roland McGrath <roland@redhat.com>, 2002.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include <errno.h>

#include <pthread.h>

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include <sys/wait.h>

static pid_t initial_pid;

static void *

tf2 (void *arg)

{

  if (getppid () != initial_pid)

    {

      printf ("getppid in thread returned %ld, expected %ld\n",

	      (long int) getppid (), (long int) initial_pid);

      return (void *) -1;

    }

  return NULL;

}

static void *

tf1 (void *arg)

{

  pid_t child = fork ();

  if (child == 0)

    {

      if (getppid () != initial_pid)

	{

	  printf ("first getppid returned %ld, expected %ld\n",

		  (long int) getppid (), (long int) initial_pid);

	  exit (1);

	}

      pthread_t th2;

      if (pthread_create (&th2, NULL, tf2, NULL) != 0)

	{

	  puts ("child: pthread_create failed");

	  exit (1);

	}

      void *result;

      if (pthread_join (th2, &result) != 0)

	{

	  puts ("pthread_join failed");

	  exit  (1);

	}

      exit (result == NULL ? 0 : 1);

    }

  else if (child == -1)

    {

      puts ("initial fork failed");

      exit (1);

    }

  int status;

  if (TEMP_FAILURE_RETRY (waitpid (child, &status, 0)) != child)

    {

      printf ("waitpid failed: %m\n");

      exit (1);

    }

  exit (status);

}

static int

do_test (void)

{

  initial_pid = getpid ();

  pthread_t th1;

  if (pthread_create (&th1, NULL, tf1, NULL) != 0)

    {

      puts ("parent: pthread_create failed");

      exit (1);

    }

  /* This call should never return.  */

  pthread_join (th1, NULL);

  return 1;

}

#include <support/test-driver.c>