104 lines
2.8 KiB
C
104 lines
2.8 KiB
C
#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
|