70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
/* Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */
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/* Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T */
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/* All Rights Reserved */
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/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF */
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/* UNIX System Laboratories, Inc. */
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/* The copyright notice above does not evidence any */
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/* actual or intended publication of such source code. */
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#ifndef _SYS_MKDEV_H
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#define _SYS_MKDEV_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* SVR3 device number constants */
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#define ONBITSMAJOR 7 /* # of SVR3 major device bits */
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#define ONBITSMINOR 8 /* # of SVR3 minor device bits */
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#define OMAXMAJ 0x7f /* SVR3 max major value */
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#define OMAXMIN 0xff /* SVR3 max minor value */
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#define NBITSMAJOR 14 /* # of SVR4 major device bits */
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#define NBITSMINOR 18 /* # of SVR4 minor device bits */
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#define MAXMAJ 0x1ff /* XXXdh this may change if we decide to make
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* lboot size the MAJOR array flexibly. */
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#define MAXMIN 0x3ffff /* MAX minor */
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#if !defined(_KERNEL)
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/* undefine sysmacros.h device macros */
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#undef makedev
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#undef major
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#undef minor
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dev_t makedev(const major_t, const minor_t);
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major_t major(const dev_t);
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minor_t minor(const dev_t);
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dev_t __makedev(const int, const major_t, const minor_t);
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major_t __major(const int, const dev_t);
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minor_t __minor(const int, const dev_t);
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#define OLDDEV 0 /* old device format */
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#define NEWDEV 1 /* new device format */
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#define MKDEV_VER NEWDEV
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#define makedev(maj, min) __makedev(MKDEV_VER, maj, min)
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#define STRING_SPEC_DEV __makedev(MKDEV_VER, 0, 0)
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#define IS_STRING_SPEC_DEV(x) ((dev_t)(x)==__makedev(MKDEV_VER, 0, 0))
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#define major(dev) __major(MKDEV_VER, dev)
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#define minor(dev) __minor(MKDEV_VER, dev)
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#endif /* !defined(_KERNEL) */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_MKDEV_H */
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