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🐛Add support for the Microsoft Resilient File System (aka ReFS), fixes #13
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160
DiscImageChef.Filesystems/ReFS.cs
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160
DiscImageChef.Filesystems/ReFS.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 : ReFS.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : Resilient File System plugin
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Identifies the Resilient File System and shows information.
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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.Linq;
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using System.Runtime.InteropServices;
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using System.Text;
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using DiscImageChef.CommonTypes;
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using DiscImageChef.Console;
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using DiscImageChef.DiscImages;
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using Schemas;
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namespace DiscImageChef.Filesystems
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{
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public class ReFS : IFilesystem
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{
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const uint FSRS = 0x53525346;
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readonly byte[] refsSignature = {0x52, 0x65, 0x46, 0x53, 0x00, 0x00, 0x00, 0x00};
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public string Name => "Resilient File System plugin";
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public Guid Id => new Guid("37766C4E-EBF5-4113-A712-B758B756ABD6");
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public FileSystemType XmlFsType { get; private set; }
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public Encoding Encoding { get; private set; }
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public bool Identify(IMediaImage imagePlugin, Partition partition)
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{
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RefsVolumeHeader refsVhdr = new RefsVolumeHeader();
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uint sbSize = (uint)(Marshal.SizeOf(refsVhdr) / imagePlugin.Info.SectorSize);
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if(Marshal.SizeOf(refsVhdr) % imagePlugin.Info.SectorSize != 0) sbSize++;
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if(partition.Start + sbSize >= partition.End) return false;
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byte[] sector = imagePlugin.ReadSectors(partition.Start, sbSize);
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if(sector.Length < Marshal.SizeOf(refsVhdr)) return false;
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IntPtr sbPtr = Marshal.AllocHGlobal(Marshal.SizeOf(refsVhdr));
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Marshal.Copy(sector, 0, sbPtr, Marshal.SizeOf(refsVhdr));
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refsVhdr = (RefsVolumeHeader)Marshal.PtrToStructure(sbPtr, typeof(RefsVolumeHeader));
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Marshal.FreeHGlobal(sbPtr);
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return refsVhdr.identifier == FSRS && ArrayHelpers.ArrayIsNullOrEmpty(refsVhdr.mustBeZero) &&
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refsVhdr.signature.SequenceEqual(refsSignature);
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}
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public void GetInformation(IMediaImage imagePlugin, Partition partition, out string information,
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Encoding encoding)
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{
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Encoding = Encoding.UTF8;
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information = "";
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RefsVolumeHeader refsVhdr = new RefsVolumeHeader();
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uint sbSize = (uint)(Marshal.SizeOf(refsVhdr) / imagePlugin.Info.SectorSize);
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if(Marshal.SizeOf(refsVhdr) % imagePlugin.Info.SectorSize != 0) sbSize++;
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if(partition.Start + sbSize >= partition.End) return;
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byte[] sector = imagePlugin.ReadSectors(partition.Start, sbSize);
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if(sector.Length < Marshal.SizeOf(refsVhdr)) return;
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IntPtr sbPtr = Marshal.AllocHGlobal(Marshal.SizeOf(refsVhdr));
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Marshal.Copy(sector, 0, sbPtr, Marshal.SizeOf(refsVhdr));
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refsVhdr = (RefsVolumeHeader)Marshal.PtrToStructure(sbPtr, typeof(RefsVolumeHeader));
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Marshal.FreeHGlobal(sbPtr);
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DicConsole.DebugWriteLine("ReFS plugin", "VolumeHeader.jump empty? = {0}",
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ArrayHelpers.ArrayIsNullOrEmpty(refsVhdr.jump));
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DicConsole.DebugWriteLine("ReFS plugin", "VolumeHeader.signature = {0}",
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StringHandlers.CToString(refsVhdr.signature));
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DicConsole.DebugWriteLine("ReFS plugin", "VolumeHeader.mustBeZero empty? = {0}",
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ArrayHelpers.ArrayIsNullOrEmpty(refsVhdr.mustBeZero));
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DicConsole.DebugWriteLine("ReFS plugin", "VolumeHeader.identifier = {0}",
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StringHandlers.CToString(BitConverter.GetBytes(refsVhdr.identifier)));
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DicConsole.DebugWriteLine("ReFS plugin", "VolumeHeader.length = {0}", refsVhdr.length);
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DicConsole.DebugWriteLine("ReFS plugin", "VolumeHeader.checksum = 0x{0:X4}", refsVhdr.checksum);
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DicConsole.DebugWriteLine("ReFS plugin", "VolumeHeader.sectors = {0}", refsVhdr.sectors);
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DicConsole.DebugWriteLine("ReFS plugin", "VolumeHeader.bytesPerSector = {0}", refsVhdr.bytesPerSector);
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DicConsole.DebugWriteLine("ReFS plugin", "VolumeHeader.sectorsPerCluster = {0}",
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refsVhdr.sectorsPerCluster);
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DicConsole.DebugWriteLine("ReFS plugin", "VolumeHeader.unknown1 zero? = {0}", refsVhdr.unknown1 == 0);
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DicConsole.DebugWriteLine("ReFS plugin", "VolumeHeader.unknown2 zero? = {0}", refsVhdr.unknown2 == 0);
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DicConsole.DebugWriteLine("ReFS plugin", "VolumeHeader.unknown3 zero? = {0}", refsVhdr.unknown3 == 0);
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DicConsole.DebugWriteLine("ReFS plugin", "VolumeHeader.unknown4 zero? = {0}", refsVhdr.unknown4 == 0);
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DicConsole.DebugWriteLine("ReFS plugin", "VolumeHeader.unknown5 empty? = {0}",
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ArrayHelpers.ArrayIsNullOrEmpty(refsVhdr.unknown5));
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if(refsVhdr.identifier != FSRS || !ArrayHelpers.ArrayIsNullOrEmpty(refsVhdr.mustBeZero) ||
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!refsVhdr.signature.SequenceEqual(refsSignature)) return;
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StringBuilder sb = new StringBuilder();
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sb.AppendLine("Microsoft Resilient File System");
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sb.AppendFormat("Volume uses {0} bytes per sector", refsVhdr.bytesPerSector).AppendLine();
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sb.AppendFormat("Volume uses {0} sectors per cluster ({1} bytes)", refsVhdr.sectorsPerCluster,
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refsVhdr.sectorsPerCluster * refsVhdr.bytesPerSector).AppendLine();
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sb.AppendFormat("Volume has {0} sectors ({1} bytes)", refsVhdr.sectors,
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refsVhdr.sectors * refsVhdr.bytesPerSector).AppendLine();
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information = sb.ToString();
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XmlFsType = new FileSystemType
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{
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Type = "Resilient File System",
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ClusterSize = (int)(refsVhdr.bytesPerSector * refsVhdr.sectorsPerCluster),
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Clusters = (long)(refsVhdr.sectors / refsVhdr.sectorsPerCluster)
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};
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}
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[StructLayout(LayoutKind.Sequential, Pack = 1)]
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struct RefsVolumeHeader
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{
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)]
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public byte[] jump;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
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public byte[] signature;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 5)]
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public byte[] mustBeZero;
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public uint identifier;
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public ushort length;
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public ushort checksum;
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public ulong sectors;
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public uint bytesPerSector;
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public uint sectorsPerCluster;
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public uint unknown1;
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public uint unknown2;
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public ulong unknown3;
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public ulong unknown4;
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 15872)]
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public byte[] unknown5;
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}
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}
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}
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