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Sourcecode: parted version File versions

device.h

/*
    libparted - a library for manipulating disk partitions
    Copyright (C) 1998, 1999, 2000, 2001 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#ifndef PED_DEVICE_H_INCLUDED
#define PED_DEVICE_H_INCLUDED

#include <parted/timer.h>

#define PED_SECTOR_SIZE       512
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
} 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);
      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 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 */


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