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Diffstat (limited to 'include/device.h')
| -rw-r--r-- | include/device.h | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/include/device.h b/include/device.h new file mode 100644 index 0000000..a3c8c92 --- /dev/null +++ b/include/device.h @@ -0,0 +1,162 @@ +/* + * This file has been modified for the cdrkit suite. + * + * The behaviour and appearence of the program code below can differ to a major + * extent from the version distributed by the original author(s). + * + * For details, see Changelog file distributed with the cdrkit package. If you + * received this file from another source then ask the distributing person for + * a log of modifications. + * + */ + +/* @(#)device.h 1.13 05/01/24 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 version 2 + * as published by the Free Software Foundation. + * + * 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 + /* + * 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(BOOL debug); +#ifndef dev_major +extern XDEV_T dev_major(XDEV_T dev); +extern XDEV_T _dev_major(int mbits, XDEV_T dev); +extern XDEV_T dev_minor(XDEV_T dev); +extern XDEV_T _dev_minor(int mbits, XDEV_T dev); +extern XDEV_T dev_make(XDEV_T majo, XDEV_T mino); +extern XDEV_T _dev_make(int mbits, XDEV_T majo, XDEV_T mino); +#endif + +#endif /* __XDEV__ */ + +#ifdef __cplusplus +} +#endif + +#endif /* _DEVICE_H */ |