/* Device numbers of devices used in the implementation.  Linux version.

   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/>.  */

#ifndef _DEVICE_NRS_H

#define _DEVICE_NRS_H	1

#include <sys/sysmacros.h>

/* /dev/null is (1,3).  */

#define DEV_NULL_MAJOR	1

#define DEV_NULL_MINOR	3

/* /dev/full is (1,7).  */

#define DEV_FULL_MAJOR	1

#define DEV_FULL_MINOR	7

/* Pseudo tty slaves.  For Linux we use the Unix98 ttys.  We could

   also include the old BSD-style tty buts they should not be used and

   the extra test would only slow down correctly set up systems.  If a

   system still uses those device the slower tests performed (using

   isatty) will catch it.  */

#define DEV_TTY_LOW_MAJOR	136

#define DEV_TTY_HIGH_MAJOR	143

/* Test whether given device is a tty.  */

#define DEV_TTY_P(statp) \

  ({ int __dev_major = __gnu_dev_major ((statp)->st_rdev);		      \

     __dev_major >= DEV_TTY_LOW_MAJOR && __dev_major <= DEV_TTY_HIGH_MAJOR; })

#endif	/* device-nrs.h */