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#ifndef MTOOLS_FSP_H
#define MTOOLS_FSP_H
/* Copyright 1996-1999,2001-2003,2008,2009 Alain Knaff.
* This file is part of mtools.
*
* Mtools 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.
*
* Mtools 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 Mtools. If not, see <http://www.gnu.org/licenses/>.
*/
#include "stream.h"
#include "msdos.h"
#include "fs.h"
typedef enum fatAccessMode_t {
FAT_ACCESS_READ,
FAT_ACCESS_WRITE
} fatAccessMode_t;
typedef struct Fs_t {
Class_t *Class;
int refs;
Stream_t *Next;
Stream_t *Buffer;
int serialized;
unsigned long serial_number;
unsigned int cluster_size;
unsigned int sector_size;
int fat_error;
unsigned int (*fat_decode)(struct Fs_t *This, unsigned int num);
void (*fat_encode)(struct Fs_t *This, unsigned int num,
unsigned int code);
Stream_t *Direct;
int fat_dirty;
unsigned int fat_start;
unsigned int fat_len;
unsigned int num_fat;
unsigned int end_fat;
unsigned int last_fat;
int fat_bits; /* must be signed, because we use negative values
* for special purposes */
struct FatMap_t *FatMap;
unsigned int dir_start;
unsigned int dir_len;
unsigned int clus_start;
unsigned int num_clus;
char drive; /* for error messages */
/* fat 32 */
unsigned int primaryFat;
unsigned int writeAllFats;
unsigned int rootCluster;
unsigned int infoSectorLoc;
unsigned int last; /* last sector allocated, or MAX32 if unknown */
unsigned int freeSpace; /* free space, or MAX32 if unknown */
int preallocatedClusters;
int lastFatSectorNr;
unsigned char *lastFatSectorData;
fatAccessMode_t lastFatAccessMode;
int sectorMask;
int sectorShift;
doscp_t *cp;
} Fs_t;
int fs_free(Stream_t *Stream);
void set_fat12(Fs_t *Fs);
void set_fat16(Fs_t *Fs);
void set_fat32(Fs_t *Fs);
unsigned int get_next_free_cluster(Fs_t *Fs, unsigned int last);
unsigned int fatDecode(Fs_t *This, unsigned int pos);
void fatAppend(Fs_t *This, unsigned int pos, unsigned int newpos);
void fatDeallocate(Fs_t *This, unsigned int pos);
void fatAllocate(Fs_t *This, unsigned int pos, unsigned int value);
void fatEncode(Fs_t *This, unsigned int pos, unsigned int value);
int fat_read(Fs_t *This, union bootsector *boot,
size_t tot_sectors, int nodups);
void fat_write(Fs_t *This);
int zero_fat(Fs_t *Fs, int media_descriptor);
extern Class_t FsClass;
int fsPreallocateClusters(Fs_t *Fs, long);
Fs_t *getFs(Stream_t *Stream);
#endif
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