/* Copyright (C) 2003-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.

   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 <string.h>

#include <unistd.h>

#include <sys/mman.h>

#include <sys/wait.h>

static pthread_barrier_t b2;

static int fd;

static int called;

static void

cl (void *arg)

{

  called = 1;

}

static void *

tf (void *arg)

{

  int r = pthread_barrier_wait (&b2;;

  if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)

    {

      puts ("child thread: barrier_wait failed");

      exit (1);

    }

  pthread_cleanup_push (cl, NULL);

  /* This call should never return.  */

  (void) lockf (fd, F_LOCK, 0);

  pthread_cleanup_pop (0);

  return NULL;

}

static int

do_test (void)

{

  char fname[] = "/tmp/cancel16XXXXXX";

  fd = mkstemp (fname);

  if (fd == -1)

    {

      puts ("mkstemp failed");

      return 1;

    }

  unlink (fname);

  char mem[sizeof (pthread_barrier_t)];

  memset (mem, '\0', sizeof (mem));

  if (TEMP_FAILURE_RETRY (pwrite (fd, mem, sizeof (mem), 0)) != sizeof (mem))

    {

      puts ("pwrite failed");

      return 1;

    }

  void *p = mmap (NULL, sizeof (mem), PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);

  if (p == MAP_FAILED)

    {

      puts ("mmap failed");

      return 1;

    }

  pthread_barrier_t *b = (pthread_barrier_t *) p;

  pthread_barrierattr_t ba;

  if (pthread_barrierattr_init (&ba) != 0)

    {

      puts ("barrierattr_init failed");

      return 1;

    }

  if (pthread_barrierattr_setpshared (&ba, 1) != 0)

    {

      puts ("barrierattr_setshared failed");

      return 1;

    }

  if (pthread_barrier_init (b, &ba, 2) != 0)

    {

      puts ("1st barrier_init failed");

      return 1;

    }

  if (pthread_barrierattr_destroy (&ba) != 0)

    {

      puts ("barrier_destroy failed");

      return 1;

    }

  pid_t pid = fork ();

  if (pid == 0)

    {

      /* Child.  Lock the file and wait.  */

      if (lockf (fd, F_LOCK, 0) != 0)

	{

	  puts ("child process: lockf failed");

	  _exit (1);

	}

      int r = pthread_barrier_wait (b);

      if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)

	{

	  puts ("child process: 1st barrier_wait failed");

	  _exit (1);

	}

      /* Make sure the process dies.  */

      alarm (5);

      r = pthread_barrier_wait (b);

      if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)

	{

	  puts ("child process: 2nd barrier_wait failed");

	  _exit (1);

	}

      _exit (0);

    }

  if (pid == -1)

    {

      puts ("fork failed");

      return 1;

    }

  int r = pthread_barrier_wait (b);

  if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)

    {

      puts ("main: 1st barrier_wait failed");

      _exit (1);

    }

  if (pthread_barrier_init (&b2, NULL, 2) != 0)

    {

      puts ("2nd barrier_init failed");

      return 1;

    }

  pthread_t th;

  if (pthread_create (&th, NULL, tf, NULL) != 0)

    {

      puts ("create failed");

      return 1;

    }

  r = pthread_barrier_wait (&b2;;

  if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)

    {

      puts ("main: 2nd barrier_wait failed");

      return 1;

    }

  /* Delay.  */

  sleep (1);

  if (pthread_cancel (th) != 0)

    {

      puts ("cancel failed");

      return 1;

    }

  void *result;

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

    {

      puts ("join failed");

      return 1;

    }

  if (result != PTHREAD_CANCELED)

    {

      puts ("thread not canceled");

      return 1;

    }

  if (called == 0)

    {

      puts ("cleanup handler not called");

      return 1;

    }

  r = pthread_barrier_wait (b);

  if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)

    {

      puts ("main: 3rd barrier_wait failed");

      return 1;

    }

  int status;

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

    {

      puts ("waitpid failed");

      return 1;

    }

  if (WEXITSTATUS (status) != 0)

    {

      printf ("child process exits with %d\n", WEXITSTATUS (status));

      return 1;

    }

  if (lockf (fd, F_LOCK, 0) != 0)

    {

      puts ("main: lockf failed");

      return 1;

    }

  return 0;

}

#define TEST_FUNCTION do_test ()

#include "../test-skeleton.c"