#ifndef FSCTL_FUGUE_BITS_FAT_H
#define FSCTL_FUGUE_BITS_FAT_H 1

#include <stdint.h>
#include <stddef.h>

/* struct fugue_fat_vbr : Volume Boot Record (hardcoded for Fugue) */
struct fugue_fat_vbr
{
    // common boot structure
    uint8_t BS_jmpBoot[3];
    uint8_t BS_OEMName[8];

    // BIOS parameter Block
    uint16_t BPB_BytsPerSec;
    uint8_t  BPB_SecPerClus;
    uint16_t BPB_RsvdSecCnt;
    uint8_t  BPB_NumFATs;
    uint16_t BPB_RootEntCnt;
    uint16_t BPB_TotSec16;
    uint8_t  BPB_Media;
    uint16_t BPB_FATSz16;
    uint16_t BPB_SecPerTrk;
    uint16_t BPB_NumHeads;
    uint32_t BPB_HiddSec;
    uint32_t BPB_TotSec32;

    // Extended BIOS Parameter Block
    uint8_t  BS_DrvNum;
    uint8_t  BS_Reserved1;
    uint8_t  BS_BootSig;
    uint8_t  BS_VolID[4];
    uint8_t  BS_VolLab[11];
    uint8_t  BS_FilSysType[8];
    uint8_t  _unused[448];

    // Signature
    uint8_t Signature_word[2];
} __attribute__((packed));

/* FUGUE_DIR_ATTR_* : Attribute information */
#define FUGUE_DIR_ATTR_RDONLY   0x01
#define FUGUE_DIR_ATTR_HIDDEN   0x02
#define FUGUE_DIR_ATTR_SYSTEM   0x04
#define FUGUE_DIR_ATTR_VOLUME   0x08
#define FUGUE_DIR_ATTR_DIR      0x10
#define FUGUE_DIR_ATTR_ARCHIVE  0x20
#define FUGUE_DIR_ATTR_DEVICE   0x40
#define FUGUE_DIR_ATTR_LFN      0x0f

/* fugue_fat_dir : directory strcuture information */
struct fugue_fat_dir
{
    uint8_t  DIR_Name[8];
    uint8_t  DIR_Exts[3];
    uint8_t  DIR_Attr;
    uint8_t  _unknown0[1+1+2+2+2];
    uint16_t DIR_FstClusHI;
    uint8_t  _unknown1[2+2];
    uint16_t DIR_FstClusLO;
    uint32_t DIR_FileSize;
} __attribute__((packed));

/* fugue_fat_dir_name : Fugue directory name strcuture */
struct fugue_fat_dir_name
{
    struct {
        uint8_t         :2;
        uint8_t last    :1;
        uint8_t         :1;
        uint8_t id      :4;
    } DIR_Secquence;
    uint16_t DIR_Char0;
    uint16_t DIR_Char1;
    uint16_t DIR_Char2;
    uint16_t DIR_Char3;
    uint16_t DIR_Char4;
    uint8_t  DIR_Attr;      // must be 0x0f
    uint8_t  DIR_Type;      // must be 0x00
    uint8_t  checksum;
    uint16_t DIR_Char5;
    uint16_t DIR_Char6;
    uint16_t DIR_Char7;
    uint16_t DIR_Char8;
    uint16_t DIR_Char9;
    uint16_t DIR_Char10;
    uint16_t DIR_FstClus;   // must be 0x0000
    uint16_t DIR_Char11;
    uint16_t DIR_Char12;
} __attribute__((packed));



#endif /* FSCTL_FUGUE_BITS_FAT_H */