/* Test for completion signal handling.

   Copyright (C) 2000-2018 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 <aio.h>

#include <signal.h>

#include <stdio.h>

#include <stdlib.h>

#include <unistd.h>

#include <errno.h>

/* We might need a bit longer timeout.  */

#define TIMEOUT 10 /* sec */

int my_signo;

volatile sig_atomic_t flag;

static void

sighandler (const int signo)

{

  flag = signo;

}

static int

wait_flag (void)

{

  while (flag == 0)

    {

      puts ("Sleeping...");

      sleep (1);

    }

  if (flag != my_signo)

    {

      printf ("signal handler received wrong signal, flag is %d\n", flag);

      return 1;

    }

  return 0;

}

#ifndef SIGRTMIN

# define SIGRTMIN -1

# define SIGRTMAX -1

#endif

static int

do_test (int argc, char *argv[])

{

  char name[] = "/tmp/aio4.XXXXXX";

  int fd;

  struct aiocb *arr[1];

  struct aiocb cb;

  static const char buf[] = "Hello World\n";

  struct aioinit init = {10, 20, 0};

  struct sigaction sa;

  struct sigevent ev;

  if (SIGRTMIN == -1)

  {

      printf ("RT signals not supported.\n");

      return 0;

  }

  /* Select a signal from the middle of the available choices... */

  my_signo = (SIGRTMAX + SIGRTMIN) / 2;

  fd = mkstemp (name);

  if (fd == -1)

    {

      printf ("cannot open temp name: %m\n");

      return 1;

    }

  unlink (name);

  /* Test also aio_init.  */

  aio_init (&init);

  arr[0] = &cb;

  cb.aio_fildes = fd;

  cb.aio_lio_opcode = LIO_WRITE;

  cb.aio_reqprio = 0;

  cb.aio_buf = (void *) buf;

  cb.aio_nbytes = sizeof (buf) - 1;

  cb.aio_offset = 0;

  cb.aio_sigevent.sigev_notify = SIGEV_SIGNAL;

  cb.aio_sigevent.sigev_notify_function = NULL;

  cb.aio_sigevent.sigev_notify_attributes = NULL;

  cb.aio_sigevent.sigev_signo = my_signo;

  cb.aio_sigevent.sigev_value.sival_ptr = NULL;

  ev.sigev_notify = SIGEV_SIGNAL;

  ev.sigev_notify_function = NULL;

  ev.sigev_notify_attributes = NULL;

  ev.sigev_signo = my_signo;

  sa.sa_handler = sighandler;

  sigemptyset (&sa.sa_mask);

  sa.sa_flags = SA_RESTART;

  if (sigaction (my_signo, &sa, NULL) < 0)

    {

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

      return 1;

    }

  flag = 0;

  /* First use aio_write.  */

  if (aio_write (arr[0]) < 0)

    {

      if (errno == ENOSYS)

	{

	  puts ("no aio support in this configuration");

	  return 0;

	}

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

      return 1;

    }

  if (wait_flag ())

    return 1;

  puts ("aio_write OK");

  flag = 0;

  /* Again with lio_listio.  */

  if (lio_listio (LIO_NOWAIT, arr, 1, &ev) < 0)

    {

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

      return 1;

    }

  if (wait_flag ())

    return 1;

  puts ("all OK");

  return 0;

}

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