/* Determine whether descriptor has given property.

   Copyright (C) 1996-2018 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 <sys/stat.h>

#include <sys/socket.h>

#include <sys/types.h>

int

isfdtype (int fildes, int fdtype)

{

  struct stat64 st;

  int result;

  {

    int save_error = errno;

    result = fstat64 (fildes, &st);

    __set_errno (save_error);

  }

  return result ?: (st.st_mode & S_IFMT) == (mode_t) fdtype;

}