Blame |
Last modification |
View Log
| RSS feed
/*
* Project: S.Ha.R.K.
*
* Coordinators:
* Giorgio Buttazzo <giorgio@sssup.it>
* Paolo Gai <pj@gandalf.sssup.it>
*
* Authors :
* Paolo Gai <pj@gandalf.sssup.it>
* Massimiliano Giorgi <massy@gandalf.sssup.it>
* Luca Abeni <luca@gandalf.sssup.it>
* (see the web pages for full authors list)
*
* ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)
*
* http://www.sssup.it
* http://retis.sssup.it
* http://shark.sssup.it
*/
/*
* Copyright (C) 1999 Massimiliano Giorgi
*
* 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 of the License, 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; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/*
* CVS : $Id: bdev.h,v 1.1.1.1 2002-03-29 14:12:49 pj Exp $
*
* File: $File$
* Revision: $Revision: 1.1.1.1 $
* Last update: $Date: 2002-03-29 14:12:49 $
*/
#ifndef __BDEV_H__
#define __BDEV_H__
#include "glue.h"
#include <fs/bdevinit.h>
#include <fs/bdev.h>
#define MAXBLOCKDEVICE 8
struct block_device {
#ifdef _PARANOIA
__uint32_t magic;
#endif
char *bd_name;
int bd_sectorsize;
__uint32_t bd_flag_used:1;
struct block_device_operations *bd_op;
};
#define MAXBLOCKDEVICEMINOR 16
struct block_device_minor {
#ifdef _PARANOIA
__uint32_t magic;
#endif
__dev_t bdm_device;
__uint8_t bdm_fsind;
#define MAXDEVICENAME 16
char bdm_name[MAXDEVICENAME+1];
};
struct block_device_operations {
int (*_trylock)(__dev_t device);
int (*_tryunlock)(__dev_t device);
int (*read)(__dev_t device, __blkcnt_t blocknum, __uint8_t *buffer);
int (*seek)(__dev_t device, __blkcnt_t blocknum);
int (*write)(__dev_t device, __blkcnt_t blocknum, __uint8_t *buffer);
};
#define TRYLOCK_OK BDEV_OK
#define TRYLOCK_CANT BDEV_FAIL
#define TRYLOCK_ERR BDEV_ERROR
#define TRYUNLOCK_OK TRYLOCK_OK
#define TRYUNLOCK_CANT TRYLOCK_CANT
#define TRYUNLOCK_ERR TRYLOCK_ERR
int bdev_register(__dev_t major,char *name,struct block_device *);
int bdev_register_minor(__dev_t device, char *name,__uint8_t fsind);
int bdev_read(__dev_t dev, __blkcnt_t blocknum, __uint8_t *buffer);
int bdev_seek(__dev_t dev, __blkcnt_t blocknum);
int bdev_write(__dev_t dev, __blkcnt_t blocknum, __uint8_t *buffer);
#endif