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#if defined(linux) || defined(__uClinux__) || defined(__sun) \
32		|| defined(__APPLE__) || defined(__DARWIN__)
33  /* Make sure the presence of <windows.h> means compiling for Windows */
34#undef HAVE_WINDOWS_H
35#endif
36
37#ifndef HAVE_WINDOWS_H
38
39/* Not for Windows use standard Unix style low level device operations. */
40#define ntfs_device_default_io_ops ntfs_device_unix_io_ops
41
42#else /* HAVE_WINDOWS_H */
43
44#ifndef HDIO_GETGEO
45#	define HDIO_GETGEO	0x301
46/**
47 * struct hd_geometry -
48 */
49struct hd_geometry {
50	unsigned char heads;
51	unsigned char sectors;
52	unsigned short cylinders;
53	unsigned long start;
54};
55#endif
56#ifndef BLKGETSIZE
57#	define BLKGETSIZE	0x1260
58#endif
59#ifndef BLKSSZGET
60#	define BLKSSZGET	0x1268
61#endif
62#ifndef BLKGETSIZE64
63#	define BLKGETSIZE64	0x80041272
64#endif
65#ifndef BLKBSZSET
66#	define BLKBSZSET	0x40041271
67#endif
68
69/* On Windows (and Cygwin) : use Win32 low level device operations. */
70#define ntfs_device_default_io_ops ntfs_device_win32_io_ops
71
72/* A few useful functions */
73int ntfs_win32_set_sparse(int);
74int ntfs_win32_ftruncate(int fd, s64 size);
75int ntfs_device_win32_ftruncate(struct ntfs_device*, s64);
76
77#endif /* HAVE_WINDOWS_H */
78
79
80/* Forward declaration. */
81struct ntfs_device_operations;
82
83extern struct ntfs_device_operations ntfs_device_default_io_ops;
84
85#endif /* NO_NTFS_DEVICE_DEFAULT_IO_OPS */
86
87#endif /* defined _NTFS_DEVICE_IO_H */
88
89