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-/* fat.h - Read/write access to the FAT
-
- Copyright (C) 1993 Werner Almesberger <werner.almesberger@lrc.di.epfl.ch>
-
- This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-
- On Debian systems, the complete text of the GNU General Public License
- can be found in /usr/share/common-licenses/GPL-3 file.
-*/
-
-
-#ifndef _FAT_H
-#define _FAT_H
-
-void read_fat(DOS_FS *fs);
-
-/* Loads the FAT of the file system described by FS. Initializes the FAT,
- replaces broken FATs and rejects invalid cluster entries. */
-
-void set_fat(DOS_FS *fs,unsigned long cluster,unsigned long new);
-
-/* Changes the value of the CLUSTERth cluster of the FAT of FS to NEW. Special
- values of NEW are -1 (EOF, 0xff8 or 0xfff8) and -2 (bad sector, 0xff7 or
- 0xfff7) */
-
-int bad_cluster(DOS_FS *fs,unsigned long cluster);
-
-/* Returns a non-zero integer if the CLUSTERth cluster is marked as bad or zero
- otherwise. */
-
-unsigned long next_cluster(DOS_FS *fs,unsigned long cluster);
-
-/* Returns the number of the cluster following CLUSTER, or -1 if this is the
- last cluster of the respective cluster chain. CLUSTER must not be a bad
- cluster. */
-
-loff_t cluster_start(DOS_FS *fs,unsigned long cluster);
-
-/* Returns the byte offset of CLUSTER, relative to the respective device. */
-
-void set_owner(DOS_FS *fs,unsigned long cluster,DOS_FILE *owner);
-
-/* Sets the owner pointer of the respective cluster to OWNER. If OWNER was NULL
- before, it can be set to NULL or any non-NULL value. Otherwise, only NULL is
- accepted as the new value. */
-
-DOS_FILE *get_owner(DOS_FS *fs,unsigned long cluster);
-
-/* Returns the owner of the repective cluster or NULL if the cluster has no
- owner. */
-
-void fix_bad(DOS_FS *fs);
-
-/* Scans the disk for currently unused bad clusters and marks them as bad. */
-
-void reclaim_free(DOS_FS *fs);
-
-/* Marks all allocated, but unused clusters as free. */
-
-void reclaim_file(DOS_FS *fs);
-
-/* Scans the FAT for chains of allocated, but unused clusters and creates files
- for them in the root directory. Also tries to fix all inconsistencies (e.g.
- loops, shared clusters, etc.) in the process. */
-
-unsigned long update_free(DOS_FS *fs);
-
-/* Updates free cluster count in FSINFO sector. */
-
-#endif