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device.h
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2006-04-20
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/*
libparted - a library for manipulating disk partitions
Copyright (C) 1998 - 2001, 2005 Free Software Foundation, Inc.
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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifndef PED_DEVICE_H_INCLUDED
#define PED_DEVICE_H_INCLUDED
#include <parted/timer.h>
typedef long long PedSector;
typedef enum {
PED_DEVICE_UNKNOWN = 0,
PED_DEVICE_SCSI = 1,
PED_DEVICE_IDE = 2,
PED_DEVICE_DAC960 = 3,
PED_DEVICE_CPQARRAY = 4,
PED_DEVICE_FILE = 5,
PED_DEVICE_ATARAID = 6,
PED_DEVICE_I2O = 7,
PED_DEVICE_UBD = 8
} PedDeviceType;
typedef struct _PedDevice PedDevice;
typedef struct _PedDeviceArchOps PedDeviceArchOps;
typedef struct _PedCHSGeometry PedCHSGeometry;
struct _PedCHSGeometry {
int cylinders;
int heads;
int sectors;
};
/* A hard disk device - eg. /dev/hda, not /dev/hda3 */
struct _PedDevice {
PedDevice* next;
char* model; /* description of hardware */
char* path; /* device /dev entry */
PedDeviceType type; /* SCSI, IDE, etc. */
int sector_size;
PedSector length;
int open_count;
int read_only;
int external_mode;
int dirty;
int boot_dirty;
PedCHSGeometry hw_geom;
PedCHSGeometry bios_geom;
short host, did;
void* arch_specific;
};
struct _PedDeviceArchOps {
PedDevice* (*_new) (const char* path);
void (*destroy) (PedDevice* dev);
int (*is_busy) (PedDevice* dev);
int (*open) (PedDevice* dev);
int (*refresh_open) (PedDevice* dev);
int (*close) (PedDevice* dev);
int (*refresh_close) (PedDevice* dev);
int (*read) (PedDevice* dev, void* buffer,
PedSector start, PedSector count);
int (*write) (PedDevice* dev, const void* buffer,
PedSector start, PedSector count);
int (*sync) (PedDevice* dev);
int (*sync_fast) (PedDevice* dev);
PedSector (*check) (PedDevice* dev, void* buffer,
PedSector start, PedSector count);
void (*probe_all) ();
};
extern void ped_device_probe_all ();
extern void ped_device_free_all ();
extern PedDevice* ped_device_get (const char* name);
extern PedDevice* ped_device_get_next (const PedDevice* dev);
extern int ped_device_is_busy (PedDevice* dev);
extern int ped_device_open (PedDevice* dev);
extern int ped_device_close (PedDevice* dev);
extern void ped_device_destroy (PedDevice* dev);
extern int ped_device_begin_external_access (PedDevice* dev);
extern int ped_device_end_external_access (PedDevice* dev);
extern int ped_device_read (PedDevice* dev, void* buffer,
PedSector start, PedSector count);
extern int ped_device_write (PedDevice* dev, const void* buffer,
PedSector start, PedSector count);
extern int ped_device_sync (PedDevice* dev);
extern int ped_device_sync_fast (PedDevice* dev);
extern PedSector ped_device_check (PedDevice* dev, void* buffer,
PedSector start, PedSector count);
/* private stuff ;-) */
extern void _ped_device_probe (const char* path);
#endif /* PED_DEVICE_H_INCLUDED */