minix/commands/i386/mtools-3.9.7/fsP.h

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2005-04-21 16:53:53 +02:00
#ifndef MTOOLS_FSP_H
#define MTOOLS_FSP_H
#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;
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;
int num_fat;
unsigned int end_fat;
unsigned int last_fat;
int fat_bits;
struct FatMap_t *FatMap;
int dir_start;
int dir_len;
int clus_start;
int num_clus;
char *drive; /* for error messages */
/* fat 32 */
unsigned int primaryFat;
unsigned int writeAllFats;
unsigned int rootCluster;
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;
} 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, struct bootsector *boot, int fat_bits,
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