1178cd1e5b0b6ba0cd194a353e8fb394cade8310
[reactos.git] / sdk / lib / fslib / vfatlib / check / io.h
1 /****
2 ** Platform-dependent file
3 ****/
4
5 /* io.h - Virtual disk input/output
6
7 Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch>
8 Copyright (C) 1998 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de>
9 Copyright (C) 2008-2014 Daniel Baumann <mail@daniel-baumann.ch>
10
11 This program is free software: you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation, either version 3 of the License, or
14 (at your option) any later version.
15
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
20
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>.
23
24 The complete text of the GNU General Public License
25 can be found in /usr/share/common-licenses/GPL-3 file.
26 */
27
28 /* FAT32, VFAT, Atari format support, and various fixes additions May 1998
29 * by Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> */
30
31 #ifndef _IO_H
32 #define _IO_H
33
34 //#include <sys/types.h> /* for loff_t */
35 // #include <fcntl.h> /* for off_t */
36
37 void fs_open(PUNICODE_STRING DriveRoot, int read_write);
38
39 /* Opens the file system PATH. If RW is zero, the file system is opened
40 read-only, otherwise, it is opened read-write. */
41
42 BOOLEAN fs_isdirty(void);
43
44 /* Checks if filesystem is dirty */
45
46 void fs_read(off_t pos, int size, void *data);
47
48 /* Reads SIZE bytes starting at POS into DATA. Performs all applicable
49 changes. */
50
51 int fs_test(off_t pos, int size);
52
53 /* Returns a non-zero integer if SIZE bytes starting at POS can be read without
54 errors. Otherwise, it returns zero. */
55
56 void fs_write(off_t pos, int size, void *data);
57
58 /* If write_immed is non-zero, SIZE bytes are written from DATA to the disk,
59 starting at POS. If write_immed is zero, the change is added to a list in
60 memory. */
61
62 int fs_close(int write);
63
64 /* Closes the filesystem, performs all pending changes if WRITE is non-zero
65 and removes the list of changes. Returns a non-zero integer if the file
66 system has been changed since the last fs_open, zero otherwise. */
67
68 int fs_changed(void);
69
70 /* Determines whether the filesystem has changed. See fs_close. */
71
72 NTSTATUS fs_lock(BOOLEAN LockVolume);
73
74 /* Lock or unlocks the volume */
75
76 void fs_dismount(void);
77
78 /* Dismounts the volume */
79
80 #endif