1/*
2 * device_io.h - Exports for default device io. Originated from the Linux-NTFS project.
3 *
4 * Copyright (c) 2000-2006 Anton Altaparmakov
5 *
6 * This program/include file is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as published
8 * by the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program/include file is distributed in the hope that it will be
12 * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
13 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program (in the main directory of the NTFS-3G
18 * distribution in the file COPYING); if not, write to the Free Software
19 * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
20 */
21
22#ifndef _NTFS_DEVICE_IO_H
23#define _NTFS_DEVICE_IO_H
24
25#ifdef HAVE_CONFIG_H
26#include "config.h"
27#endif
28
29#ifndef NO_NTFS_DEVICE_DEFAULT_IO_OPS
30
31#ifndef __CYGWIN32__
32
33/* Not on Cygwin; use standard Unix style low level device operations. */
34#define ntfs_device_default_io_ops ntfs_device_unix_io_ops
35
36#else /* __CYGWIN32__ */
37
38#ifndef HDIO_GETGEO
39#	define HDIO_GETGEO	0x301
40/**
41 * struct hd_geometry -
42 */
43struct hd_geometry {
44	unsigned char heads;
45	unsigned char sectors;
46	unsigned short cylinders;
47	unsigned long start;
48};
49#endif
50#ifndef BLKGETSIZE
51#	define BLKGETSIZE	0x1260
52#endif
53#ifndef BLKSSZGET
54#	define BLKSSZGET	0x1268
55#endif
56#ifndef BLKGETSIZE64
57#	define BLKGETSIZE64	0x80041272
58#endif
59#ifndef BLKBSZSET
60#	define BLKBSZSET	0x40041271
61#endif
62
63/* On Cygwin; use Win32 low level device operations. */
64#define ntfs_device_default_io_ops ntfs_device_win32_io_ops
65
66#endif /* __CYGWIN32__ */
67
68
69/* Forward declaration. */
70struct ntfs_device_operations;
71
72extern struct ntfs_device_operations ntfs_device_default_io_ops;
73
74#endif /* NO_NTFS_DEVICE_DEFAULT_IO_OPS */
75
76#endif /* defined _NTFS_DEVICE_IO_H */
77
78