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46 lines
1.7 KiB
C
46 lines
1.7 KiB
C
/* Device numbers of devices used in the implementation. Linux version.
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Copyright (C) 2000-2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _DEVICE_NRS_H
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#define _DEVICE_NRS_H 1
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#include <sys/sysmacros.h>
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/* /dev/null is (1,3). */
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#define DEV_NULL_MAJOR 1
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#define DEV_NULL_MINOR 3
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/* /dev/full is (1,7). */
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#define DEV_FULL_MAJOR 1
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#define DEV_FULL_MINOR 7
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/* Pseudo tty slaves. For Linux we use the Unix98 ttys. We could
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also include the old BSD-style tty buts they should not be used and
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the extra test would only slow down correctly set up systems. If a
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system still uses those device the slower tests performed (using
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isatty) will catch it. */
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#define DEV_TTY_LOW_MAJOR 136
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#define DEV_TTY_HIGH_MAJOR 143
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/* Test whether given device is a tty. */
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#define DEV_TTY_P(statp) \
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({ int __dev_major = __gnu_dev_major ((statp)->st_rdev); \
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__dev_major >= DEV_TTY_LOW_MAJOR && __dev_major <= DEV_TTY_HIGH_MAJOR; })
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#endif /* device-nrs.h */
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