| [9] | 1 | #ifndef MTOOLS_FSP_H
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| 2 | #define MTOOLS_FSP_H
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| 3 |
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| 4 | #include "stream.h"
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| 5 | #include "msdos.h"
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| 6 | #include "fs.h"
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| 7 |
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| 8 | typedef enum fatAccessMode_t {
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| 9 | FAT_ACCESS_READ,
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| 10 | FAT_ACCESS_WRITE
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| 11 | } fatAccessMode_t;
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| 12 |
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| 13 | typedef struct Fs_t {
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| 14 | Class_t *Class;
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| 15 | int refs;
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| 16 | Stream_t *Next;
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| 17 | Stream_t *Buffer;
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| 18 |
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| 19 | int serialized;
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| 20 | unsigned long serial_number;
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| 21 | int cluster_size;
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| 22 | unsigned int sector_size;
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| 23 | int fat_error;
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| 24 |
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| 25 | unsigned int (*fat_decode)(struct Fs_t *This, unsigned int num);
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| 26 | void (*fat_encode)(struct Fs_t *This, unsigned int num,
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| 27 | unsigned int code);
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| 28 |
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| 29 | Stream_t *Direct;
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| 30 | int fat_dirty;
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| 31 | unsigned int fat_start;
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| 32 | unsigned int fat_len;
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| 33 |
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| 34 | int num_fat;
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| 35 | unsigned int end_fat;
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| 36 | unsigned int last_fat;
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| 37 | int fat_bits;
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| 38 | struct FatMap_t *FatMap;
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| 39 |
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| 40 | int dir_start;
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| 41 | int dir_len;
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| 42 | int clus_start;
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| 43 |
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| 44 | int num_clus;
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| 45 | char *drive; /* for error messages */
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| 46 |
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| 47 | /* fat 32 */
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| 48 | unsigned int primaryFat;
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| 49 | unsigned int writeAllFats;
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| 50 | unsigned int rootCluster;
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| 51 | int infoSectorLoc;
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| 52 | unsigned int last; /* last sector allocated, or MAX32 if unknown */
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| 53 | unsigned int freeSpace; /* free space, or MAX32 if unknown */
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| 54 | int preallocatedClusters;
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| 55 |
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| 56 | int lastFatSectorNr;
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| 57 | unsigned char *lastFatSectorData;
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| 58 | fatAccessMode_t lastFatAccessMode;
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| 59 | int sectorMask;
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| 60 | int sectorShift;
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| 61 | } Fs_t;
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| 62 |
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| 63 | int fs_free(Stream_t *Stream);
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| 64 |
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| 65 | void set_fat12(Fs_t *Fs);
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| 66 | void set_fat16(Fs_t *Fs);
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| 67 | void set_fat32(Fs_t *Fs);
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| 68 | unsigned int get_next_free_cluster(Fs_t *Fs, unsigned int last);
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| 69 | unsigned int fatDecode(Fs_t *This, unsigned int pos);
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| 70 | void fatAppend(Fs_t *This, unsigned int pos, unsigned int newpos);
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| 71 | void fatDeallocate(Fs_t *This, unsigned int pos);
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| 72 | void fatAllocate(Fs_t *This, unsigned int pos, unsigned int value);
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| 73 | void fatEncode(Fs_t *This, unsigned int pos, unsigned int value);
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| 74 |
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| 75 | int fat_read(Fs_t *This, struct bootsector *boot, int fat_bits,
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| 76 | size_t tot_sectors, int nodups);
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| 77 | void fat_write(Fs_t *This);
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| 78 | int zero_fat(Fs_t *Fs, int media_descriptor);
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| 79 | extern Class_t FsClass;
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| 80 | int fsPreallocateClusters(Fs_t *Fs, long);
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| 81 | Fs_t *getFs(Stream_t *Stream);
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| 82 |
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| 83 |
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| 84 | #endif
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