dosfstools  4.2
About: dosfstools are utilities to create, check and label (MS-DOS) FAT filesystems.
  Fossies Dox: dosfstools-4.2.tar.gz  ("unofficial" and yet experimental doxygen-generated source code documentation)  

io.h
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1 /* io.h - Virtual disk input/output
2 
3  Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch>
4  Copyright (C) 1998 Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de>
5  Copyright (C) 2008-2014 Daniel Baumann <mail@daniel-baumann.ch>
6 
7  This program is free software: you can redistribute it and/or modify
8  it under the terms of the GNU General Public License as published by
9  the Free Software Foundation, either version 3 of the License, or
10  (at your option) any later version.
11 
12  This program is distributed in the hope that it will be useful,
13  but WITHOUT ANY WARRANTY; without even the implied warranty of
14  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  GNU General Public License for more details.
16 
17  You should have received a copy of the GNU General Public License
18  along with this program. If not, see <http://www.gnu.org/licenses/>.
19 
20  The complete text of the GNU General Public License
21  can be found in /usr/share/common-licenses/GPL-3 file.
22 */
23 
24 /* FAT32, VFAT, Atari format support, and various fixes additions May 1998
25  * by Roman Hodek <Roman.Hodek@informatik.uni-erlangen.de> */
26 
27 #ifndef _IO_H
28 #define _IO_H
29 
30 #include <fcntl.h> /* for off_t */
31 
32 void fs_open(const char *path, int rw);
33 
34 /* Opens the filesystem PATH. If RW is zero, the filesystem is opened
35  read-only, otherwise, it is opened read-write. */
36 
37 void fs_read(off_t pos, int size, void *data);
38 
39 /* Reads SIZE bytes starting at POS into DATA. Performs all applicable
40  changes. */
41 
42 int fs_test(off_t pos, int size);
43 
44 /* Returns a non-zero integer if SIZE bytes starting at POS can be read without
45  errors. Otherwise, it returns zero. */
46 
47 void fs_write(off_t pos, int size, void *data);
48 
49 /* If write_immed is non-zero, SIZE bytes are written from DATA to the disk,
50  starting at POS. If write_immed is zero, the change is added to a list in
51  memory. */
52 
53 int fs_close(int write);
54 
55 /* Closes the filesystem, performs all pending changes if WRITE is non-zero
56  and removes the list of changes. Returns a non-zero integer if the file
57  system has been changed since the last fs_open, zero otherwise. */
58 
59 int fs_changed(void);
60 
61 /* Determines whether the filesystem has changed. See fs_close. */
62 
63 #endif
int rw
Definition: fatlabel.c:49
int fs_changed(void)
Definition: io.c:183
int fs_close(int write)
Definition: io.c:163
int fs_test(off_t pos, int size)
Definition: io.c:101
void fs_read(off_t pos, int size, void *data)
Definition: io.c:78
void fs_write(off_t pos, int size, void *data)
Definition: io.c:114
void fs_open(const char *path, int rw)
Definition: io.c:59