/* Binary mode I/O.

   Copyright 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>

#define BINARY_IO_INLINE _GL_EXTERN_INLINE

#include "binary-io.h"

#if defined __DJGPP__ || defined __EMX__

# include <errno.h>

# include <unistd.h>

int

__gl_setmode_check (int fd)

{

  if (isatty (fd))

    {

      errno = EINVAL;

      return -1;

    }

  else

    return 0;

}

#endif