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Define DEV_TTY_P.

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This commit is contained in:
Ulrich Drepper 2001-07-18 20:31:08 +00:00
parent adb2a70d23
commit f2ebcef262
2 changed files with 20 additions and 2 deletions
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5
sysdeps/generic/device-nrs.h
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@ -1,5 +1,5 @@
/* Device numbers of devices used in the implementation. Generic version.
Copyright (C) 2000 Free Software Foundation, Inc.
Copyright (C) 2000, 2001 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
@ -22,4 +22,7 @@
/* By default we know no device numbers. */
/* We cannot check whether a given device is a tty. */
#define DEV_TTY_P(dev) (0)
#endif /* device-nrs.h */

17
sysdeps/unix/sysv/linux/device-nrs.h
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@ -1,5 +1,5 @@
/* Device numbers of devices used in the implementation. Linux version.
Copyright (C) 2000 Free Software Foundation, Inc.
Copyright (C) 2000, 2001 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
@ -20,8 +20,23 @@
#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
/* 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(dev) \
({ int __dev_major = major (dev); \
__dev_major >= DEV_TTY_LOW_MAJOR && __dev_major <= DEV_TTY_HIGH_MAJOR; })
#endif /* device-nrs.h */