146 lines
3.7 KiB
C
146 lines
3.7 KiB
C
/* @(#)device.h 1.12 03/06/15 Copyright 1995 J. Schilling */
|
|
/*
|
|
* Generic header for users of major(), minor() and makedev()
|
|
*
|
|
* Copyright (c) 1995 J. Schilling
|
|
*/
|
|
/*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This program 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with
|
|
* this program; see the file COPYING. If not, write to the Free Software
|
|
* Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#ifndef _DEVICE_H
|
|
#define _DEVICE_H
|
|
|
|
#ifndef _MCONFIG_H
|
|
#include <mconfig.h>
|
|
#endif
|
|
#ifndef _PROTOTYP_H
|
|
#include <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
|
|
# 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 /* _DEVICE_H */
|