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Refactor image classes and split them to smaller files.
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DiscImageChef.DiscImages/VHD/Structs.cs
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200
DiscImageChef.DiscImages/VHD/Structs.cs
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// /***************************************************************************
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// The Disc Image Chef
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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 : Disk image plugins.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Contains structures for Connectix and Microsoft Virtual PC disk images.
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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 © 2011-2018 Natalia Portillo
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// ****************************************************************************/
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using System;
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using System.Runtime.InteropServices;
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namespace DiscImageChef.DiscImages
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{
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public partial class Vhd
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{
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struct HardDiskFooter
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{
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/// <summary>
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/// Offset 0x00, File magic number, <see cref="Vhd.IMAGE_COOKIE" />
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/// </summary>
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public ulong Cookie;
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/// <summary>
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/// Offset 0x08, Specific feature support
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/// </summary>
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public uint Features;
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/// <summary>
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/// Offset 0x0C, File format version
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/// </summary>
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public uint Version;
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/// <summary>
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/// Offset 0x10, Offset from beginning of file to next structure
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/// </summary>
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public ulong Offset;
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/// <summary>
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/// Offset 0x18, Creation date seconds since 2000/01/01 00:00:00 UTC
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/// </summary>
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public uint Timestamp;
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/// <summary>
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/// Offset 0x1C, Application that created this disk image
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/// </summary>
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public uint CreatorApplication;
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/// <summary>
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/// Offset 0x20, Version of the application that created this disk image
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/// </summary>
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public uint CreatorVersion;
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/// <summary>
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/// Offset 0x24, Host operating system of the application that created this disk image
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/// </summary>
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public uint CreatorHostOs;
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/// <summary>
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/// Offset 0x28, Original hard disk size, in bytes
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/// </summary>
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public ulong OriginalSize;
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/// <summary>
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/// Offset 0x30, Current hard disk size, in bytes
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/// </summary>
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public ulong CurrentSize;
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/// <summary>
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/// Offset 0x38, CHS geometry
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/// Cylinder mask = 0xFFFF0000
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/// Heads mask = 0x0000FF00
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/// Sectors mask = 0x000000FF
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/// </summary>
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public uint DiskGeometry;
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/// <summary>
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/// Offset 0x3C, Disk image type
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/// </summary>
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public uint DiskType;
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/// <summary>
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/// Offset 0x40, Checksum for this structure
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/// </summary>
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public uint Checksum;
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/// <summary>
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/// Offset 0x44, UUID, used to associate parent with differencing disk images
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/// </summary>
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public Guid UniqueId;
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/// <summary>
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/// Offset 0x54, If set, system is saved, so compaction and expansion cannot be performed
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/// </summary>
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public byte SavedState;
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/// <summary>
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/// Offset 0x55, 427 bytes reserved, should contain zeros.
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/// </summary>
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public byte[] Reserved;
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}
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struct ParentLocatorEntry
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{
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/// <summary>
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/// Offset 0x00, Describes the platform specific type this entry belongs to
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/// </summary>
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public uint PlatformCode;
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/// <summary>
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/// Offset 0x04, Describes the number of 512 bytes sectors used by this entry
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/// </summary>
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public uint PlatformDataSpace;
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/// <summary>
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/// Offset 0x08, Describes this entry's size in bytes
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/// </summary>
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public uint PlatformDataLength;
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/// <summary>
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/// Offset 0x0c, Reserved
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/// </summary>
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public uint Reserved;
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/// <summary>
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/// Offset 0x10, Offset on disk image this entry resides on
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/// </summary>
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public ulong PlatformDataOffset;
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}
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struct DynamicDiskHeader
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{
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/// <summary>
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/// Offset 0x00, Header magic, <see cref="Vhd.DYNAMIC_COOKIE" />
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/// </summary>
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public ulong Cookie;
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/// <summary>
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/// Offset 0x08, Offset to next structure on disk image.
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/// Currently unused, 0xFFFFFFFF
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/// </summary>
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public ulong DataOffset;
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/// <summary>
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/// Offset 0x10, Offset of the Block Allocation Table (BAT)
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/// </summary>
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public ulong TableOffset;
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/// <summary>
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/// Offset 0x18, Version of this header
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/// </summary>
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public uint HeaderVersion;
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/// <summary>
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/// Offset 0x1C, Maximum entries present in the BAT
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/// </summary>
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public uint MaxTableEntries;
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/// <summary>
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/// Offset 0x20, Size of a block in bytes
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/// Should always be a power of two of 512
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/// </summary>
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public uint BlockSize;
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/// <summary>
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/// Offset 0x24, Checksum of this header
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/// </summary>
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public uint Checksum;
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/// <summary>
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/// Offset 0x28, UUID of parent disk image for differencing type
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/// </summary>
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public Guid ParentId;
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/// <summary>
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/// Offset 0x38, Timestamp of parent disk image
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/// </summary>
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public uint ParentTimestamp;
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/// <summary>
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/// Offset 0x3C, Reserved
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/// </summary>
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public uint Reserved;
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/// <summary>
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/// Offset 0x40, 512 bytes UTF-16 of parent disk image filename
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/// </summary>
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public string ParentName;
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/// <summary>
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/// Offset 0x240, Parent disk image locator entry, <see cref="ParentLocatorEntry" />
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/// </summary>
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public ParentLocatorEntry[] LocatorEntries;
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/// <summary>
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/// Offset 0x300, 256 reserved bytes
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/// </summary>
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public byte[] Reserved2;
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct BatSector
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{
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 128)]
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public uint[] blockPointer;
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}
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}
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}
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