/* close replacement.

   Copyright (C) 2008-2017 Free Software Foundation, Inc.

   This program 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.

   This program 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/>.  */

#include <config.h>

/* Specification.  */

#include <unistd.h>

#include <errno.h>

#include "fd-hook.h"

#if HAVE_MSVC_INVALID_PARAMETER_HANDLER

# include "msvc-inval.h"

#endif

#undef close

#if HAVE_MSVC_INVALID_PARAMETER_HANDLER

static int

close_nothrow (int fd)

{

  int result;

  TRY_MSVC_INVAL

    {

      result = close (fd);

    }

  CATCH_MSVC_INVAL

    {

      result = -1;

      errno = EBADF;

    }

  DONE_MSVC_INVAL;

  return result;

}

#else

# define close_nothrow close

#endif

/* Override close() to call into other gnulib modules.  */

int

rpl_close (int fd)

{

#if WINDOWS_SOCKETS

  int retval = execute_all_close_hooks (close_nothrow, fd);

#else

  int retval = close_nothrow (fd);

#endif

#if REPLACE_FCHDIR

  if (retval >= 0)

    _gl_unregister_fd (fd);

#endif

  return retval;

}