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 #ifndef __REACTOS__ 31 #include <fcntl.h> /* for off_t */ 32 #endif 33 34 #ifndef __REACTOS__ 35 void fs_open(char *path, int rw); 36 #else 37 NTSTATUS fs_open(PUNICODE_STRING DriveRoot, int read_write); 38 #endif 39 40 /* Opens the filesystem PATH. If RW is zero, the filesystem is opened 41 read-only, otherwise, it is opened read-write. */ 42 43 #ifdef __REACTOS__ 44 BOOLEAN fs_isdirty(void); 45 46 /* Checks if filesystem is dirty */ 47 #endif 48 49 void fs_read(off_t pos, int size, void *data); 50 51 /* Reads SIZE bytes starting at POS into DATA. Performs all applicable 52 changes. */ 53 54 int fs_test(off_t pos, int size); 55 56 /* Returns a non-zero integer if SIZE bytes starting at POS can be read without 57 errors. Otherwise, it returns zero. */ 58 59 void fs_write(off_t pos, int size, void *data); 60 61 /* If write_immed is non-zero, SIZE bytes are written from DATA to the disk, 62 starting at POS. If write_immed is zero, the change is added to a list in 63 memory. */ 64 65 int fs_close(int write); 66 67 /* Closes the filesystem, performs all pending changes if WRITE is non-zero 68 and removes the list of changes. Returns a non-zero integer if the file 69 system has been changed since the last fs_open, zero otherwise. */ 70 71 int fs_changed(void); 72 73 /* Determines whether the filesystem has changed. See fs_close. */ 74 75 #ifdef __REACTOS__ 76 NTSTATUS fs_lock(BOOLEAN LockVolume); 77 78 /* Lock or unlocks the volume */ 79 80 void fs_dismount(void); 81 82 /* Dismounts the volume */ 83 #endif 84 #endif 85