/usr/include/ntfs-3g/device.h is in ntfs-3g-dev 1:2013.1.13AR.1-2ubuntu2.
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* device.h - Exports for low level device io. Originated from the Linux-NTFS project.
*
* Copyright (c) 2000-2013 Anton Altaparmakov
* Copyright (c) 2008-2013 Tuxera Inc.
*
* This program/include file 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/include file 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 (in the main directory of the NTFS-3G
* distribution in the file COPYING); if not, write to the Free Software
* Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _NTFS_DEVICE_H
#define _NTFS_DEVICE_H
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "device_io.h"
#include "types.h"
#include "support.h"
#include "volume.h"
/**
* enum ntfs_device_state_bits -
*
* Defined bits for the state field in the ntfs_device structure.
*/
typedef enum {
ND_Open, /* 1: Device is open. */
ND_ReadOnly, /* 1: Device is read-only. */
ND_Dirty, /* 1: Device is dirty, needs sync. */
ND_Block, /* 1: Device is a block device. */
ND_Sync, /* 1: Device is mounted with "-o sync" */
} ntfs_device_state_bits;
#define test_ndev_flag(nd, flag) test_bit(ND_##flag, (nd)->d_state)
#define set_ndev_flag(nd, flag) set_bit(ND_##flag, (nd)->d_state)
#define clear_ndev_flag(nd, flag) clear_bit(ND_##flag, (nd)->d_state)
#define NDevOpen(nd) test_ndev_flag(nd, Open)
#define NDevSetOpen(nd) set_ndev_flag(nd, Open)
#define NDevClearOpen(nd) clear_ndev_flag(nd, Open)
#define NDevReadOnly(nd) test_ndev_flag(nd, ReadOnly)
#define NDevSetReadOnly(nd) set_ndev_flag(nd, ReadOnly)
#define NDevClearReadOnly(nd) clear_ndev_flag(nd, ReadOnly)
#define NDevDirty(nd) test_ndev_flag(nd, Dirty)
#define NDevSetDirty(nd) set_ndev_flag(nd, Dirty)
#define NDevClearDirty(nd) clear_ndev_flag(nd, Dirty)
#define NDevBlock(nd) test_ndev_flag(nd, Block)
#define NDevSetBlock(nd) set_ndev_flag(nd, Block)
#define NDevClearBlock(nd) clear_ndev_flag(nd, Block)
#define NDevSync(nd) test_ndev_flag(nd, Sync)
#define NDevSetSync(nd) set_ndev_flag(nd, Sync)
#define NDevClearSync(nd) clear_ndev_flag(nd, Sync)
/**
* struct ntfs_device -
*
* The ntfs device structure defining all operations needed to access the low
* level device underlying the ntfs volume.
*
* Note d_heads and d_sectors_per_track are only set as a result of a call to
* either ntfs_device_heads_get() or ntfs_device_sectors_per_track_get() (both
* calls will set up both fields or if getting them failed they will be left at
* -1).
*/
struct ntfs_device {
struct ntfs_device_operations *d_ops; /* Device operations. */
unsigned long d_state; /* State of the device. */
char *d_name; /* Name of device. */
void *d_private; /* Private data used by the
device operations. */
int d_heads; /* Disk geometry: number of
heads or -1. */
int d_sectors_per_track; /* Disk geometry: number of
sectors per track or -1. */
};
struct stat;
/**
* struct ntfs_device_operations -
*
* The ntfs device operations defining all operations that can be performed on
* the low level device described by an ntfs device structure.
*/
struct ntfs_device_operations {
int (*open)(struct ntfs_device *dev, int flags);
int (*close)(struct ntfs_device *dev);
s64 (*seek)(struct ntfs_device *dev, s64 offset, int whence);
s64 (*read)(struct ntfs_device *dev, void *buf, s64 count);
s64 (*write)(struct ntfs_device *dev, const void *buf, s64 count);
s64 (*pread)(struct ntfs_device *dev, void *buf, s64 count, s64 offset);
s64 (*pwrite)(struct ntfs_device *dev, const void *buf, s64 count,
s64 offset);
int (*sync)(struct ntfs_device *dev);
int (*stat)(struct ntfs_device *dev, struct stat *buf);
int (*ioctl)(struct ntfs_device *dev, int request, void *argp);
};
extern struct ntfs_device *ntfs_device_alloc(const char *name, const long state,
struct ntfs_device_operations *dops, void *priv_data);
extern int ntfs_device_free(struct ntfs_device *dev);
extern int ntfs_device_sync(struct ntfs_device *dev);
extern s64 ntfs_pread(struct ntfs_device *dev, const s64 pos, s64 count,
void *b);
extern s64 ntfs_pwrite(struct ntfs_device *dev, const s64 pos, s64 count,
const void *b);
extern s64 ntfs_mst_pread(struct ntfs_device *dev, const s64 pos, s64 count,
const u32 bksize, void *b);
extern s64 ntfs_mst_pwrite(struct ntfs_device *dev, const s64 pos, s64 count,
const u32 bksize, void *b);
extern s64 ntfs_cluster_read(const ntfs_volume *vol, const s64 lcn,
const s64 count, void *b);
extern s64 ntfs_cluster_write(const ntfs_volume *vol, const s64 lcn,
const s64 count, const void *b);
extern s64 ntfs_device_size_get(struct ntfs_device *dev, int block_size);
extern s64 ntfs_device_partition_start_sector_get(struct ntfs_device *dev);
extern int ntfs_device_heads_get(struct ntfs_device *dev);
extern int ntfs_device_sectors_per_track_get(struct ntfs_device *dev);
extern int ntfs_device_sector_size_get(struct ntfs_device *dev);
extern int ntfs_device_block_size_set(struct ntfs_device *dev, int block_size);
#endif /* defined _NTFS_DEVICE_H */
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