fat32.h

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#ifndef _FAT32
#define _FAT32

// Boot Sector
#define BS_JMPBOOT			0	// Length = 3
#define BS_OEM_NAME			3	// Length = 8
#define BPB_BYTES_PER_SEC		11	// Length = 2
#define BPB_SEC_PER_CLUS		13	// Length = 1
#define BPB_RSVD_SEC_CNT		14	// Length = 2
#define BPB_NUM_FATS			16	// Length = 1
#define BPB_ROOT_ENT_CNT		17	// Length = 2
#define BPB_TOT_SEC16			19	// Length = 2
#define BPB_MEDIA			21	// Length = 1
#define	BPB_FATSZ16			22	// Length = 2
#define BPB_SEC_PER_TRK			24	// Length = 2
#define BPB_NUM_HEADS			26	// Length = 2
#define BPB_HIDD_SEC			28	// Length = 4
#define BPB_TOT_SEC32			32	// Length = 4

// FAT 32
#define BPB_FAT32_FATSZ32		36	// Length = 4
#define BPB_FAT32_EXT_FLAGS		40	// Length = 2
#define BPB_FAT32_FSVER			42	// Length = 2
#define BPB_FAT32_ROOT_CLUS		44	// Length = 4
#define BPB_FAT32_FS_INFO		48	// Length = 2
#define BPB_FAT32_BKBOOT_SEC		50	// Length = 2
#define BS_FAT32_DRV_NUM		64	// Length = 1
#define BS_FAT32_BOOT_SIG		66	// Length = 1
#define BS_FAT32_VOL_ID			67	// Length = 4
#define BS_FAT32_VOL_LAB		71	// Length = 11
#define BS_FAT32_FIL_SYSTYPE		82	// Length = 8

struct super_block
{
	unsigned short	BytsPerSec;
	unsigned char	SecPerClus;
	unsigned short	RsvdSecCnt;
	unsigned char	NumFATs;
	unsigned short	RootEntCnt;
	unsigned short	TotSec16;
	unsigned char	Media;
	unsigned short	FATSz16;
	unsigned short	SecPerTrk;
	unsigned short	NumHeads;
	unsigned int	HiddSec;
	unsigned int	TotSec32;
	
	unsigned int	FAT32_FATSz32;
	unsigned short	FAT32_ExtFlags;
	unsigned short	FAT32_FSVer;
	unsigned int	FAT32_RootClus;
	unsigned short	FAT32_FSInfo;
	unsigned short	FAT32_BkBootSec;
	unsigned char	FAT32_DrvNum;
	unsigned char	FAT32_BootSig;
	unsigned int	FAT32_VolID;
	unsigned char	FAT32_VolLab[11];
	unsigned char	FAT32_FilSysType[8];

};

#define ATTR_READ_ONLY 	0x01
#define ATTR_HIDDEN	0x02
#define ATTR_SYSTEM	0x04
#define ATTR_VOLUME_ID	0x08
#define ATTR_DIRECTORY	0x10
#define ATTR_ARCHIVE	0x20
#define ATTR_LONG_NAME 	(ATTR_READ_ONLY|ATTR_HIDDEN|ATTR_SYSTEM|ATTR_VOLUME_ID)
			
#define ATTR_LONG_NAME_MASK	(ATTR_READ_ONLY|ATTR_HIDDEN|ATTR_SYSTEM|ATTR_VOLUME_ID|ATTR_DIRECTORY|ATTR_ARCHIVE)

typedef struct 
{
	unsigned char	Dir_Name[11];
	unsigned char	Dir_Attr;
	unsigned char	Dir_NTRes;
	unsigned char	DIR_CrtTimeTenth;
	unsigned short	DIR_CrtTime;
	unsigned short	DIR_CrtDate;
	unsigned short	DIR_LstAccDate;
	unsigned short	DIR_FstClusHI;
	unsigned short	DIR_WrtTime;
	unsigned short	DIR_Date;
	unsigned short	DIR_FstClusLO;
	unsigned int	DIR_FileSize;
	
}FAT32_DIR_ENTRY_SHORT;

typedef struct 
{
	unsigned char	LDIR_Ord;
	unsigned char	LDIR_Name1[10];
	unsigned char	LDIR_Attr;
	unsigned char	LDIR_Type;
	unsigned char	LDIR_Chksum;
	unsigned char	LDIR_Name2[12];
	unsigned short	LDIR_FstClusLO;
	unsigned char	LDIR_Name3[4];
	
}FAT32_DIR_ENTRY_LONG;

#define FAT12	0
#define FAT16	1
#define FAT32	2

#endif