/* Device numbers of devices used in the implementation.  Linux version.   Copyright (C) 2000, 2001, 2005 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, write to the Free   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA   02111-1307 USA.  */#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 = major ((statp)->st_rdev);			      \     __dev_major >= DEV_TTY_LOW_MAJOR && __dev_major <= DEV_TTY_HIGH_MAJOR; })#endif	/* device-nrs.h */