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structs.h
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structs.h
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#ifndef STRUCTS_H
#define STRUCTS_H
#include <stdint.h>
#include <stdlib.h>
#include <stdint.h>
#include <wchar.h>
#include <wctype.h>
// Entry
typedef struct {
uint8_t fname[8];
uint8_t ext[3];
uint8_t atr;
uint8_t reserved[10];
uint32_t secs : 5;
uint32_t mins : 6;
uint32_t hrs : 5;
uint32_t days : 5;
uint32_t months : 4;
uint32_t years : 7;
uint16_t cluster;
uint32_t size;
} __attribute((packed)) entry_t;
// Boot sector
typedef struct {
uint8_t bootcode[3];
uint8_t oem_data[8];
uint16_t sector_size;
uint8_t clust_sz;
uint16_t reserved_sectors;
uint8_t fat_cnt;
uint16_t root_entries;
uint16_t unused;
uint8_t media_type;
uint16_t fat_size;
uint16_t sectors_per_track;
uint16_t head_cnt;
uint32_t hidden_sectors;
uint32_t total_sect;
uint8_t drive_number;
uint8_t reserved;
uint8_t eboot_sign;
uint32_t volume_id;
char volume_label[11];
char fs_type[8];
uint8_t boot_code[448];
uint16_t boot_sign;
} __attribute((packed)) bootsector_t;
// FAT info
typedef struct {
unsigned long disk_start; // seek pos
FILE* in;
bootsector_t* bs;
size_t sector_size;
unsigned int clust_sz;
unsigned int root_entries;
unsigned int sectors_per_fat;
unsigned int hidden_sectors;
unsigned int reserved_sectors;
unsigned int sectors_for_root;
unsigned int rootdir_offset;
unsigned int cluster_offset;
unsigned int fat_cnt;
unsigned int clusters;
} fat_desc_t;
struct file_t;
typedef struct file_t file_t;
typedef struct dir_t dir_t;
struct dir_t {
dir_t* parent;
entry_t* entry;
dir_t** subdirs;
file_t** files;
unsigned int max_subdirs;
unsigned int max_files;
unsigned int sector;
unsigned int cluster;
unsigned int clust_sz;
unsigned int subdir_cnt;
unsigned int file_cnt;
unsigned int byte_size;
char* pth;
};
struct file_t {
dir_t* dir;
entry_t* entry;
unsigned int cluster;
unsigned int clust_sz;
unsigned int byte_size;
char* pth;
};
// ALL the functions involved...
dir_t* process_root(fat_desc_t* fat, int root_cluster);
void dir_process(fat_desc_t *fat, dir_t *parent);
dir_t* init_dir(fat_desc_t* fat, entry_t* entry, dir_t* parent);
void add_subdir(dir_t* parent, dir_t* subdir);
void add_file(dir_t* parent, file_t* file);
char* dir_pth(dir_t* dir);
void print_dir(dir_t* dir);
void free_dir(dir_t* dir);
size_t entry_namelen(entry_t* dir);
size_t entry_extlen(entry_t* dir);
char* file_path(file_t* dir);
file_t* init_file(fat_desc_t* fat, entry_t* entry, dir_t* dir);
void print_file(file_t* file);
inline int get_sector(fat_desc_t* fat, int sector);
inline int get_cluster_size(fat_desc_t* fat, int start_cluster);
inline int get_next_cluster(fat_desc_t* fat, int cluster);
#endif // STRUCTS_H