Refactor image classes and split them to smaller files.

DiscImageChef.DiscImages/VHDX/Constants.cs

@@ -0,0 +1,90 @@
+// /***************************************************************************
+// The Disc Image Chef
+// ----------------------------------------------------------------------------
+//
+// Filename       : Constants.cs
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// Component      : Disk image plugins.
+//
+// --[ Description ] ----------------------------------------------------------
+//
+//     Contains constants for Microsoft Hyper-V disk images.
+//
+// --[ License ] --------------------------------------------------------------
+//
+//     This library is free software; you can redistribute it and/or modify
+//     it under the terms of the GNU Lesser General Public License as
+//     published by the Free Software Foundation; either version 2.1 of the
+//     License, or (at your option) any later version.
+//
+//     This library is distributed in the hope that it will be useful, but
+//     WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+//     Lesser General Public License for more details.
+//
+//     You should have received a copy of the GNU Lesser General Public
+//     License along with this library; if not, see <http://www.gnu.org/licenses/>.
+//
+// ----------------------------------------------------------------------------c
+// Copyright © 2011-2018 Natalia Portillo
+// ****************************************************************************/
+
+using System;
+
+namespace DiscImageChef.DiscImages
+{
+    public partial class Vhdx
+    {
+        const ulong VHDX_SIGNATURE    = 0x656C696678646876;
+        const uint  VHDX_HEADER_SIG   = 0x64616568;
+        const uint  VHDX_REGION_SIG   = 0x69676572;
+        const ulong VHDX_METADATA_SIG = 0x617461646174656D;
+
+        const string PARENT_LINKAGE_KEY      = "parent_linkage";
+        const string PARENT_LINKAGE2_KEY     = "parent_linkage2";
+        const string RELATIVE_PATH_KEY       = "relative_path";
+        const string VOLUME_PATH_KEY         = "volume_path";
+        const string ABSOLUTE_WIN32_PATH_KEY = "absolute_win32_path";
+
+        const uint REGION_FLAGS_REQUIRED = 0x01;
+
+        const uint METADATA_FLAGS_USER     = 0x01;
+        const uint METADATA_FLAGS_VIRTUAL  = 0x02;
+        const uint METADATA_FLAGS_REQUIRED = 0x04;
+
+        const uint FILE_FLAGS_LEAVE_ALLOCATED = 0x01;
+        const uint FILE_FLAGS_HAS_PARENT      = 0x02;
+
+        /// <summary>Block has never been stored on this image, check parent</summary>
+        const ulong PAYLOAD_BLOCK_NOT_PRESENT = 0x00;
+        /// <summary>Block was stored on this image and is removed, return whatever data you wish</summary>
+        const ulong PAYLOAD_BLOCK_UNDEFINED = 0x01;
+        /// <summary>Block is filled with zeroes</summary>
+        const ulong PAYLOAD_BLOCK_ZERO = 0x02;
+        /// <summary>All sectors in this block were UNMAPed/TRIMed, return zeroes</summary>
+        const ulong PAYLOAD_BLOCK_UNMAPPER = 0x03;
+        /// <summary>Block is present on this image</summary>
+        const ulong PAYLOAD_BLOCK_FULLY_PRESENT = 0x06;
+        /// <summary>Block is present on image but there may be sectors present on parent image</summary>
+        const ulong PAYLOAD_BLOCK_PARTIALLY_PRESENT = 0x07;
+
+        const ulong SECTOR_BITMAP_NOT_PRESENT = 0x00;
+        const ulong SECTOR_BITMAP_PRESENT     = 0x06;
+
+        const ulong BAT_FILE_OFFSET_MASK = 0xFFFFFFFFFFFC0000;
+        const ulong BAT_FLAGS_MASK       = 0x7;
+        const ulong BAT_RESERVED_MASK    = 0x3FFF8;
+
+        const    int  MAX_CACHE_SIZE         = 16777216;
+        readonly Guid batGuid                = new Guid("2DC27766-F623-4200-9D64-115E9BFD4A08");
+        readonly Guid fileParametersGuid     = new Guid("CAA16737-FA36-4D43-B3B6-33F0AA44E76B");
+        readonly Guid logicalSectorSizeGuid  = new Guid("8141BF1D-A96F-4709-BA47-F233A8FAAB5F");
+        readonly Guid metadataGuid           = new Guid("8B7CA206-4790-4B9A-B8FE-575F050F886E");
+        readonly Guid page83DataGuid         = new Guid("BECA12AB-B2E6-4523-93EF-C309E000C746");
+        readonly Guid parentLocatorGuid      = new Guid("A8D35F2D-B30B-454D-ABF7-D3D84834AB0C");
+        readonly Guid parentTypeVhdxGuid     = new Guid("B04AEFB7-D19E-4A81-B789-25B8E9445913");
+        readonly Guid physicalSectorSizeGuid = new Guid("CDA348C7-445D-4471-9CC9-E9885251C556");
+        readonly Guid virtualDiskSizeGuid    = new Guid("2FA54224-CD1B-4876-B211-5DBED83BF4B8");
+    }
+}