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397 lines
15 KiB
C#
397 lines
15 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : Structs.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : High Performance Optical File System plugin.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2025 Natalia Portillo
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// ****************************************************************************/
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using System.Diagnostics.CodeAnalysis;
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using System.Runtime.InteropServices;
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using Aaru.CommonTypes.Attributes;
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namespace Aaru.Filesystems;
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[SuppressMessage("ReSharper", "UnusedType.Local")]
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public sealed partial class HPOFS
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{
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#region Nested type: BiosParameterBlock
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/// <summary>BIOS Parameter Block, at sector 0, little-endian</summary>
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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readonly struct BiosParameterBlock
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{
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/// <summary>0x000, Jump to boot code</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)]
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public readonly byte[] jump;
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/// <summary>0x003, OEM Name, 8 bytes, space-padded</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
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public readonly byte[] oem_name;
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/// <summary>0x00B, Bytes per sector</summary>
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public readonly ushort bps;
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/// <summary>0x00D, Sectors per cluster</summary>
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public readonly byte spc;
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/// <summary>0x00E, Reserved sectors between BPB and... does it have sense in HPFS?</summary>
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public readonly ushort rsectors;
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/// <summary>0x010, Number of FATs... seriously?</summary>
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public readonly byte fats_no;
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/// <summary>0x011, Number of entries on root directory... ok</summary>
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public readonly ushort root_ent;
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/// <summary>0x013, Sectors in volume... doubt it</summary>
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public readonly ushort sectors;
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/// <summary>0x015, Media descriptor</summary>
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public readonly byte media;
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/// <summary>0x016, Sectors per FAT... again</summary>
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public readonly ushort spfat;
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/// <summary>0x018, Sectors per track... you're kidding</summary>
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public readonly ushort sptrk;
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/// <summary>0x01A, Heads... stop!</summary>
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public readonly ushort heads;
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/// <summary>0x01C, Hidden sectors before BPB</summary>
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public readonly uint hsectors;
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/// <summary>0x024, Sectors in volume if > 65535...</summary>
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public readonly uint big_sectors;
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/// <summary>0x028, Drive number</summary>
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public readonly byte drive_no;
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/// <summary>0x029, Volume flags?</summary>
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public readonly byte nt_flags;
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/// <summary>0x02A, EPB signature, 0x29</summary>
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public readonly byte signature;
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/// <summary>0x02B, Volume serial number</summary>
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public readonly uint serial_no;
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/// <summary>0x02F, Volume label, 11 bytes, space-padded</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 11)]
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public readonly byte[] volume_label;
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/// <summary>0x03A, Filesystem type, 8 bytes, space-padded ("HPOFS ")</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
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public readonly byte[] fs_type;
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/// <summary>Boot code.</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 442)]
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public readonly byte[] boot_code;
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/// <summary>0x1F8, Unknown</summary>
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public readonly uint unknown;
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/// <summary>0x1FC, Unknown</summary>
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public readonly ushort unknown2;
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/// <summary>0x1FE, 0xAA55</summary>
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public readonly ushort signature2;
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}
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#endregion
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#region Nested type: Dci
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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readonly struct Dci
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{
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/// <summary>"DATA"</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
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public readonly byte[] blockId;
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/// <summary>Unknown</summary>
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public readonly uint unknown;
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/// <summary>Unknown</summary>
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public readonly uint unknown2;
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/// <summary>Unknown</summary>
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public readonly uint unknown3;
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/// <summary>Unknown</summary>
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public readonly uint unknown4;
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/// <summary>Unknown</summary>
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public readonly uint unknown5;
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/// <summary>Unknown</summary>
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public readonly ushort unknown6;
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/// <summary>Unknown</summary>
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public readonly ushort unknown7;
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/// <summary>Unknown</summary>
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public readonly uint unknown8;
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/// <summary>Unknown</summary>
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public readonly uint unknown9;
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/// <summary>Entries, size unknown</summary>
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public readonly DciEntry[] entries;
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}
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#endregion
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#region Nested type: DciEntry
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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readonly struct DciEntry
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{
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/// <summary>Key length</summary>
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public readonly ushort key_len;
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/// <summary>Record length</summary>
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public readonly ushort record_len;
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/// <summary>dci key</summary>
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public readonly DciKey key;
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/// <summary>Padding? Size is key_len - size of DciKey</summary>
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public readonly byte[] padding;
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/// <summary>Direct</summary>
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public readonly Direct dir;
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/// <summary>Padding? Size is record_len - size of Direct</summary>
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public readonly byte[] unknown;
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}
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#endregion
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#region Nested type: DciKey
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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readonly struct DciKey
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{
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/// <summary>Unknown</summary>
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public readonly byte unknown;
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/// <summary>Name size + 2</summary>
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public readonly byte size;
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/// <summary>Unknown</summary>
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public readonly byte unknown2;
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/// <summary>Unknown</summary>
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public readonly byte unknown3;
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/// <summary>Unknown</summary>
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public readonly byte unknown4;
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/// <summary>Unknown</summary>
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public readonly byte unknown5;
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/// <summary>Name, length = size - 2</summary>
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public readonly byte[] name;
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}
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#endregion
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#region Nested type: Direct
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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readonly struct Direct
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{
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/// <summary>Unknown</summary>
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public readonly uint unknown;
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/// <summary>Unknown</summary>
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public readonly uint unknown2;
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/// <summary>Unknown</summary>
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public readonly uint unknown3;
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/// <summary>Mask 0x6000</summary>
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public readonly ushort subfiles_no;
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/// <summary>Unknown</summary>
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public readonly ushort unknown4;
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/// <summary>Unknown</summary>
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public readonly uint unknown5;
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/// <summary>Unknown</summary>
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public readonly uint unknown6;
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/// <summary>Unknown</summary>
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public readonly uint unknown7;
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/// <summary>Some date</summary>
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public readonly ushort date1;
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/// <summary>Some time</summary>
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public readonly ushort time1;
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/// <summary>Some date</summary>
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public readonly ushort date2;
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/// <summary>Some time</summary>
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public readonly ushort time2;
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/// <summary>Unknown</summary>
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public readonly uint unknown8;
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/// <summary>Unknown</summary>
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public readonly uint unknown9;
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/// <summary>Unknown</summary>
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public readonly uint unknown10;
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/// <summary>Unknown</summary>
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public readonly uint unknown11;
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/// <summary>Unknown</summary>
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public readonly uint unknown12;
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/// <summary>Unknown</summary>
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public readonly uint unknown13;
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/// <summary>Unknown</summary>
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public readonly uint unknown14;
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/// <summary>Subfiles, length unknown</summary>
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public readonly SubFile[] subfiles;
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}
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#endregion
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#region Nested type: Extent
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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readonly struct Extent
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{
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/// <summary>Extent length in sectors</summary>
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public readonly ushort length;
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/// <summary>Unknown</summary>
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public readonly short unknown;
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/// <summary>Extent starting sector</summary>
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public readonly int start;
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}
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#endregion
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#region Nested type: MasterRecord
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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readonly struct MasterRecord
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{
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/// <summary>"MAST"</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)]
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public readonly byte[] blockId;
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/// <summary>Unknown</summary>
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public readonly uint unknown;
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/// <summary>Unknown</summary>
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public readonly ushort unknown2;
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/// <summary>Unknown</summary>
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public readonly ushort unknown3;
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/// <summary>Unknown</summary>
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public readonly uint unknown4;
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/// <summary>Unknown</summary>
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public readonly ushort unknown5;
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/// <summary>Unknown</summary>
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public readonly ushort unknown6;
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/// <summary>Unknown</summary>
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public readonly ushort unknown7;
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/// <summary>Unknown</summary>
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public readonly ushort unknown8;
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/// <summary>Unknown</summary>
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public readonly uint unknown9;
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}
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#endregion
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#region Nested type: MediaInformationBlock
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/// <summary>Media Information Block, at sector 13, big-endian</summary>
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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[SwapEndian]
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partial struct MediaInformationBlock
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{
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/// <summary>Block identifier "MEDINFO "</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
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public byte[] blockId;
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/// <summary>Volume label</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
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public byte[] volumeLabel;
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/// <summary>Volume comment</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 160)]
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public byte[] comment;
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/// <summary>Volume serial number</summary>
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public uint serial;
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/// <summary>Volume creation date, DOS format</summary>
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public ushort creationDate;
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/// <summary>Volume creation time, DOS format</summary>
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public ushort creationTime;
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/// <summary>Codepage type: 1 ASCII, 2 EBCDIC</summary>
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public ushort codepageType;
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/// <summary>Codepage</summary>
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public ushort codepage;
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/// <summary>RPS level</summary>
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public uint rps;
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/// <summary>Coincides with bytes per sector, and bytes per cluster, need more media</summary>
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public ushort bps;
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/// <summary>Coincides with bytes per sector, and bytes per cluster, need more media</summary>
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public ushort bpc;
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/// <summary>Unknown, empty</summary>
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public uint unknown2;
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/// <summary>Sectors (or clusters)</summary>
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public uint sectors;
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/// <summary>Unknown, coincides with bps but changing it makes nothing</summary>
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public uint unknown3;
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/// <summary>Empty?</summary>
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public ulong unknown4;
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/// <summary>Format major version</summary>
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public ushort major;
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/// <summary>Format minor version</summary>
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public ushort minor;
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/// <summary>Empty?</summary>
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public uint unknown5;
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/// <summary>Unknown, non-empty</summary>
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public uint unknown6;
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/// <summary>Empty</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 260)]
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public byte[] filler;
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}
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#endregion
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#region Nested type: SubFile
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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readonly struct SubFile
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{
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 2)]
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public readonly Extent[] extents;
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/// <summary>Unknown</summary>
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public readonly uint unknown;
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/// <summary>Unknown</summary>
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public readonly uint unknown2;
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/// <summary>Logical size in bytes</summary>
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public readonly uint logical_size;
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/// <summary>Unknown</summary>
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public readonly uint unknown3;
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/// <summary>Physical size in bytes</summary>
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public readonly uint physical_size;
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/// <summary>Unknown</summary>
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public readonly uint unknown4;
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/// <summary>Physical size in bytes</summary>
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public readonly uint physical_size2;
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/// <summary>Unknown</summary>
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public readonly uint unknown5;
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/// <summary>Unknown</summary>
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public readonly uint unknown6;
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}
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#endregion
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#region Nested type: VolumeInformationBlock
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/// <summary>Volume Information Block, at sector 14, big-endian</summary>
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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[SwapEndian]
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partial struct VolumeInformationBlock
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{
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/// <summary>Block identifier "VOLINFO "</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
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public byte[] blockId;
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/// <summary>Unknown</summary>
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public uint unknown;
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/// <summary>Unknown</summary>
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public uint unknown2;
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/// <summary>Some kind of counter</summary>
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public uint dir_intent_cnt;
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/// <summary>Some kind of counter, another</summary>
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public uint dir_update_cnt;
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/// <summary>Unknown</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 22)]
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public byte[] unknown3;
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/// <summary>Unknown, space-padded string</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
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public byte[] unknown4;
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/// <summary>Owner, space-padded string</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 32)]
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public byte[] owner;
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/// <summary>Unknown, space-padded string</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)]
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public byte[] unknown5;
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/// <summary>Unknown, empty?</summary>
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public uint unknown6;
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/// <summary>Maximum percent full</summary>
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public ushort percentFull;
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/// <summary>Unknown, empty?</summary>
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public ushort unknown7;
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/// <summary>Empty</summary>
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 384)]
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public byte[] filler;
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}
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#endregion
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} |