010templates/hpofs.bt

//------------------------------------------------
//--- 010 Editor v10.0.1 Binary Template
//
//      File: 
//   Authors: 
//   Version: 
//   Purpose: 
//  Category: 
// File Mask: 
//  ID Bytes: 
//   History: 
//------------------------------------------------

LittleEndian();

typedef struct 
{
    byte jump[3] <format=hex>;
    char oem_name[8];
    ushort bps;
    byte spc;
    ushort rsectors;
    byte fats_no;
    ushort root_ent;
    ushort sectors;
    byte media <format=hex>;
    ushort spfat;
    ushort sptrk;
    ushort heads;
    uint hsectors;
    uint big_sectors;
    byte drive_no <format=hex>;
    byte nt_flags;
    byte signature <format=hex>;
    uint serial_no <format=hex>;
    char volume_label[11];
    char fs_type[8];
    byte boot_code[442] <format=hex>;
    uint unknown;
    ushort unknown2;
    ushort signature2 <format=hex>;
} BiosParameterBlock <optimize=false>;

typedef struct
{
    char blockId[8];
    char volumeLabel[32];
    char comment[160];
    uint serial <format=hex>;
    DOSDATE creationDate;
    DOSTIME creationTime;
    ushort codepageType;
    ushort codepage;
    uint rps;
    ushort bps;
    ushort bpc;
    uint unknown2;
    uint sectors;
    uint unknown3;
    uint64 unknown4;
    ushort major;
    ushort minor;
    uint unknown5;
    uint unknown6;
    byte filler[260];
} MediaInformationBlock <optimize=false>;

typedef struct
{
    char blockId[8];
    uint unknown;
    uint unknown2;
    uint DIR_INTENT_CNT <format=hex>;
    uint DIR_UPDATE_CNT <format=hex>;
    byte unknown3[22];
    byte unknown4[32];
    char owner[32];
    byte unknown5[16];
    uint unknown6;
    ushort percentFull;
    ushort unknown7;
    byte filler[384];
} VolumeInformationBlock <optimize=false>;

typedef struct
{
    ushort length;
    short unknown;
    int start;
} Extent <optimize=false>;

typedef struct
{
    Extent extents[2];
    uint unknown;
    uint unknown2;
    uint logical_size;
    uint unknown3;
    uint physical_size;
    uint unknown4;
    uint physical_size2;
    uint unknown5;
    uint unknown6;
} subfile <optimize=false>;

typedef struct
{
    uint unknown;
    uint unknown2;
    uint unknown3;
    ushort : 1;
    ushort subfiles_no : 2;
    ushort : 13;
    ushort unknown4;
    uint unknown5;
    uint unknown6;
    uint unknown7;
    DOSDATE date1;
    DOSTIME time1;
    DOSDATE date2;
    DOSTIME time2;
    uint unknown8;
    uint unknown9;
    uint unknown10;
    uint unknown11;
    uint unknown12;
    uint unknown13;
    uint unknown14;
    subfile subfiles[subfiles_no];
} direct <optimize=false>;

typedef struct
{
    char blockId[4];
    uint unknown;
    ushort unknown2;
    ushort unknown3;
    uint unknown4;
    ushort unknown5;
    ushort unknown6;
    ushort unknown7;
    ushort unknown8;
    uint unknown9;
} master_record <optimize=false>;

typedef struct
{
    byte unknown;
    byte size;
    byte unknown2;
    byte unknown3;
    byte unknown4; 
    byte unknown5;
    char name[size - 2];
} dci_key <optimize=false>;

typedef struct
{
    ushort key_len;
    ushort record_len;
    dci_key key;
    byte padding[key_len - sizeof(key)];
    direct dir;
//    byte unknown[record_len - sizeof(direct)];
} dci_entry <optimize=false>;

typedef struct
{
    char blockId[4];
    uint unknown;
    uint unknown2;
    uint unknown3;
    uint unknown4;
    uint unknown5;
    ushort unknown6;
    ushort unknown7;
    uint unknown8;
    uint unknown9;
    dci_entry entries[9];
} dci <optimize=false>;

BiosParameterBlock BPB;

Assert(BPB.fs_type == "HPOFS", "Incorrect signature");

BigEndian();

FSeek(BPB.bps * 13);
MediaInformationBlock MIB;
Assert(MIB.blockId == "MEDINFO ", "Incorrect media information block ID");

FSeek(BPB.bps * 14);
VolumeInformationBlock VIB;
Assert(VIB.blockId == "VOLINFO ", "Incorrect volume information block ID");

FSeek(BPB.bps * 5);
direct bpb;
FSeek(BPB.bps * 6);
direct directory;
FSeek(BPB.bps * 7);
direct freefile;
FSeek(BPB.bps * 8);
direct unknown4;
FSeek(BPB.bps * 9);
direct unknown5;
FSeek(BPB.bps * 10);
direct unknown6;

FSeek(BPB.bps * directory.subfiles[0].extents[0].start);
master_record directory_master;
FSeek(BPB.bps * freefile.subfiles[0].extents[0].start);
master_record freefile_master;

FSeek(BPB.bps * (directory.subfiles[0].extents[0].start+8));
dci directory_dci;