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/* @(#)device.h 1.15 06/09/13 Copyright 1995 J. Schilling */
/*
* Generic header for users of major(), minor() and makedev()
*
* Copyright (c) 1995 J. Schilling
*/
/*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* See the file CDDL.Schily.txt in this distribution for details.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file CDDL.Schily.txt from this distribution.
*/
#ifndef _SCHILY_DEVICE_H
#define _SCHILY_DEVICE_H
#ifndef _SCHILY_MCONFIG_H
#include <schily/mconfig.h>
#endif
#ifndef _SCHILY_PROTOTYP_H
#include <schily/prototyp.h>
#endif
/*
* On generic SVR4, major is a function (defined in sys/mkdev.h).
* On Solaris it is defined ...
* As we cannot just test if major is #define'd, we have to
* define _FOUND_MAJOR_ instead.
*
* WARNING: Do never include <sys/sysmacros.h> in SVR4, it contains
* an old definition for major()/minor() defining 8 minorbits.
* Use <sys/mkdev.h> instead.
*/
#ifndef _INCL_SYS_TYPES_H
#include <sys/types.h>
#define _INCL_SYS_TYPES_H
#endif
/*
* Some systems define major in <sys/types.h>.
* We are ready...
*/
#ifdef major
# define _FOUND_MAJOR_
#endif
#ifdef MAJOR_IN_MKDEV
# ifndef _INCL_SYS_MKDEV_H
# include <sys/mkdev.h>
# define _INCL_SYS_MKDEV_H
# endif
/*
* Interix doesn't use makedev(); it uses mkdev()
*/
# if !defined(makedev) && defined(mkdev)
# define makedev(a, b) mkdev((a), (b))
# endif
# define _FOUND_MAJOR_
#endif
#ifndef _FOUND_MAJOR_
# ifdef MAJOR_IN_SYSMACROS
# ifndef _INCL_SYS_SYSMACROS_H
# include <sys/sysmacros.h>
# define _INCL_SYS_SYSMACROS_H
# endif
# define _FOUND_MAJOR_
# endif
#endif
/*
* If we are on HP/UX before HP/UX 8,
* major/minor are not in <sys/sysmacros.h>.
*/
#ifndef _FOUND_MAJOR_
# if defined(hpux) || defined(__hpux__) || defined(__hpux)
# ifndef _INCL_SYS_MKOD_H
# include <sys/mknod.h>
# define _INCL_SYS_MKOD_H
# endif
# define _FOUND_MAJOR_
# endif
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*
* For all other systems define major()/minor() here.
* XXX Check if this definition will be usefull for ms dos too.
*/
#ifndef _FOUND_MAJOR_
# define major(dev) (((dev) >> 8) & 0xFF)
# define minor(dev) ((dev) & 0xFF)
# define makedev(majo, mino) (((majo) << 8) | (mino))
#endif
/*
* Don't pollute namespace...
*/
#undef _FOUND_MAJOR_
#ifdef __XDEV__
/*
* The following defines are currently only needed for 'star'.
* We make it conditional code to avoid to pollute the namespace.
*/
#define XDEV_T unsigned long
extern int minorbits;
extern XDEV_T minormask;
extern XDEV_T _dev_mask[];
#define dev_major(dev) (((XDEV_T)(dev)) >> minorbits)
#define _dev_major(mbits, dev) (((XDEV_T)(dev)) >> (mbits))
#define dev_minor(dev) (((XDEV_T)(dev)) & minormask)
#define _dev_minor(mbits, dev) (((XDEV_T)(dev)) & _dev_mask[(mbits)])
#define dev_make(majo, mino) ((((XDEV_T)(majo)) << minorbits) | \
((XDEV_T)(mino)))
#define _dev_make(mbits, majo, mino) ((((XDEV_T)(majo)) << (mbits) | \
((XDEV_T)(mino)))
extern void dev_init __PR((BOOL debug));
#ifndef dev_major
extern XDEV_T dev_major __PR((XDEV_T dev));
extern XDEV_T _dev_major __PR((int mbits, XDEV_T dev));
extern XDEV_T dev_minor __PR((XDEV_T dev));
extern XDEV_T _dev_minor __PR((int mbits, XDEV_T dev));
extern XDEV_T dev_make __PR((XDEV_T majo, XDEV_T mino));
extern XDEV_T _dev_make __PR((int mbits, XDEV_T majo, XDEV_T mino));
#endif
#endif /* __XDEV__ */
#ifdef __cplusplus
}
#endif
#endif /* _SCHILY_DEVICE_H */
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