/* Test for SEM_VALUE_MAX overflow detection: BZ #18434.

   Copyright (C) 2015-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   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 <limits.h>

#include <semaphore.h>

#include <stdio.h>

#include <string.h>

#include <unistd.h>

static int

do_test (void)

{

  sem_t s;

  if (sem_init (&s, 0, SEM_VALUE_MAX))

    {

      printf ("sem_init: %m\n");

      return 1;

    }

  int result = 0;

  int value = 0xdeadbeef;

  if (sem_getvalue (&s, &value))

    {

      printf ("sem_getvalue: %m\n");

      result = 1;

    }

  else

    {

      printf ("sem_getvalue after init: %d\n", value);

      if (value != SEM_VALUE_MAX)

	{

	  printf ("\tshould be %d\n", SEM_VALUE_MAX);

	  result = 1;

	}

    }

  errno = 0;

  if (sem_post(&s) == 0)

    {

      puts ("sem_post at SEM_VALUE_MAX succeeded!");

      result = 1;

    }

  else

    {

      printf ("sem_post at SEM_VALUE_MAX: %m (%d)\n", errno);

      if (errno != EOVERFLOW)

	{

	  printf ("\tshould be %s (EOVERFLOW = %d)\n",

		  strerror (EOVERFLOW), EOVERFLOW);

	  result = 1;

	}

    }

  value = 0xbad1d00d;

  if (sem_getvalue (&s, &value))

    {

      printf ("sem_getvalue: %m\n");

      result = 1;

    }

  else

    {

      printf ("sem_getvalue after post: %d\n", value);

      if (value != SEM_VALUE_MAX)

	{

	  printf ("\tshould be %d\n", SEM_VALUE_MAX);

	  result = 1;

	}

    }

  if (sem_destroy (&s))

    {

      printf ("sem_destroy: %m\n");

      result = 1;

    }

  return result;

}

#define TEST_FUNCTION do_test ()

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