mirror of
https://github.com/ReneLergner/WPinternals.git
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Rene Lergner
2441 lines
100 KiB
C#
2441 lines
100 KiB
C#
//
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// Copyright (c) 2008-2011, Kenneth Bell
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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namespace DiscUtils.Ntfs
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{
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.IO;
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using System.Security.AccessControl;
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using System.Text.RegularExpressions;
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/// <summary>
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/// Class for accessing NTFS file systems.
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/// </summary>
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public sealed class NtfsFileSystem : DiscFileSystem, IClusterBasedFileSystem, IWindowsFileSystem, IDiagnosticTraceable
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{
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private const FileAttributes NonSettableFileAttributes = FileAttributes.Directory | FileAttributes.Offline | FileAttributes.ReparsePoint;
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private NtfsContext _context;
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private VolumeInformation _volumeInfo;
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// Top-level file system structures
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// Working state
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private ObjectCache<long, File> _fileCache;
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/// <summary>
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/// Initializes a new instance of the NtfsFileSystem class.
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/// </summary>
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/// <param name="stream">The stream containing the NTFS file system.</param>
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public NtfsFileSystem(Stream stream)
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: base(new NtfsOptions())
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{
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_context = new NtfsContext();
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_context.RawStream = stream;
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_context.Options = NtfsOptions;
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_context.GetFileByIndex = GetFile;
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_context.GetFileByRef = GetFile;
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_context.GetDirectoryByRef = GetDirectory;
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_context.GetDirectoryByIndex = GetDirectory;
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_context.AllocateFile = AllocateFile;
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_context.ForgetFile = ForgetFile;
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_context.ReadOnly = !stream.CanWrite;
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_fileCache = new ObjectCache<long, File>();
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stream.Position = 0;
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byte[] bytes = Utilities.ReadFully(stream, 512);
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_context.BiosParameterBlock = BiosParameterBlock.FromBytes(bytes, 0);
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if (!IsValidBPB(_context.BiosParameterBlock, stream.Length))
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{
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throw new InvalidFileSystemException("BIOS Parameter Block is invalid for an NTFS file system");
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}
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if (NtfsOptions.ReadCacheEnabled)
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{
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BlockCacheSettings cacheSettings = new BlockCacheSettings();
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cacheSettings.BlockSize = _context.BiosParameterBlock.BytesPerCluster;
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_context.RawStream = new BlockCacheStream(SparseStream.FromStream(stream, Ownership.None), Ownership.None, cacheSettings);
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}
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// Bootstrap the Master File Table
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_context.Mft = new MasterFileTable(_context);
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File mftFile = new File(_context, _context.Mft.GetBootstrapRecord());
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_fileCache[MasterFileTable.MftIndex] = mftFile;
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_context.Mft.Initialize(mftFile);
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// Get volume information (includes version number)
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File volumeInfoFile = GetFile(MasterFileTable.VolumeIndex);
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_volumeInfo = volumeInfoFile.GetStream(AttributeType.VolumeInformation, null).GetContent<VolumeInformation>();
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// Initialize access to the other well-known metadata files
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_context.ClusterBitmap = new ClusterBitmap(GetFile(MasterFileTable.BitmapIndex));
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_context.AttributeDefinitions = new AttributeDefinitions(GetFile(MasterFileTable.AttrDefIndex));
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_context.UpperCase = new UpperCase(GetFile(MasterFileTable.UpCaseIndex));
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if (_volumeInfo.Version >= VolumeInformation.VersionW2k)
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{
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_context.SecurityDescriptors = new SecurityDescriptors(GetFile(MasterFileTable.SecureIndex));
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_context.ObjectIds = new ObjectIds(GetFile(GetDirectoryEntry(@"$Extend\$ObjId").Reference));
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_context.ReparsePoints = new ReparsePoints(GetFile(GetDirectoryEntry(@"$Extend\$Reparse").Reference));
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_context.Quotas = new Quotas(GetFile(GetDirectoryEntry(@"$Extend\$Quota").Reference));
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}
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#if false
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byte[] buffer = new byte[1024];
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for (int i = 0; i < buffer.Length; ++i)
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{
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buffer[i] = 0xFF;
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}
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using (Stream s = OpenFile("$LogFile", FileMode.Open, FileAccess.ReadWrite))
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{
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while (s.Position != s.Length)
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{
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s.Write(buffer, 0, (int)Math.Min(buffer.Length, s.Length - s.Position));
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}
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}
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#endif
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}
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private delegate void StandardInformationModifier(StandardInformation si);
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/// <summary>
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/// Gets the options that control how the file system is interpreted.
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/// </summary>
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public NtfsOptions NtfsOptions
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{
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get { return (NtfsOptions)Options; }
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}
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/// <summary>
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/// Gets the friendly name for the file system.
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/// </summary>
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public override string FriendlyName
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{
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get { return "Microsoft NTFS"; }
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}
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/// <summary>
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/// Indicates if the file system supports write operations.
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/// </summary>
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public override bool CanWrite
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{
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// For now, we don't...
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get { return !_context.ReadOnly; }
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}
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/// <summary>
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/// Gets the size of each cluster (in bytes).
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/// </summary>
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public long ClusterSize
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{
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get { return _context.BiosParameterBlock.BytesPerCluster; }
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}
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/// <summary>
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/// Gets the total number of clusters managed by the file system.
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/// </summary>
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public long TotalClusters
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{
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get { return Utilities.Ceil(_context.BiosParameterBlock.TotalSectors64, _context.BiosParameterBlock.SectorsPerCluster); }
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}
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/// <summary>
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/// Gets the volume label.
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/// </summary>
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public override string VolumeLabel
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{
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get
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{
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File volumeFile = GetFile(MasterFileTable.VolumeIndex);
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NtfsStream volNameStream = volumeFile.GetStream(AttributeType.VolumeName, null);
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return volNameStream.GetContent<VolumeName>().Name;
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}
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}
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private bool CreateShortNames
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{
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get
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{
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return _context.Options.ShortNameCreation == ShortFileNameOption.Enabled
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|| (_context.Options.ShortNameCreation == ShortFileNameOption.UseVolumeFlag
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&& (_volumeInfo.Flags & VolumeInformationFlags.DisableShortNameCreation) == 0);
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}
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}
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/// <summary>
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/// Initializes a new NTFS file system.
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/// </summary>
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/// <param name="stream">The stream to write the new file system to.</param>
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/// <param name="label">The label for the new file system.</param>
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/// <param name="diskGeometry">The disk geometry of the disk containing the new file system.</param>
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/// <param name="firstSector">The first sector of the new file system on the disk.</param>
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/// <param name="sectorCount">The number of sectors allocated to the new file system on the disk.</param>
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/// <returns>The newly-initialized file system.</returns>
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public static NtfsFileSystem Format(
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Stream stream,
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string label,
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Geometry diskGeometry,
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long firstSector,
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long sectorCount)
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{
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NtfsFormatter formatter = new NtfsFormatter();
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formatter.Label = label;
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formatter.DiskGeometry = diskGeometry;
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formatter.FirstSector = firstSector;
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formatter.SectorCount = sectorCount;
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return formatter.Format(stream);
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}
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/// <summary>
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/// Initializes a new NTFS file system.
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/// </summary>
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/// <param name="stream">The stream to write the new file system to.</param>
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/// <param name="label">The label for the new file system.</param>
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/// <param name="diskGeometry">The disk geometry of the disk containing the new file system.</param>
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/// <param name="firstSector">The first sector of the new file system on the disk.</param>
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/// <param name="sectorCount">The number of sectors allocated to the new file system on the disk.</param>
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/// <param name="bootCode">The Operating System's boot code.</param>
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/// <returns>The newly-initialized file system.</returns>
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public static NtfsFileSystem Format(
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Stream stream,
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string label,
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Geometry diskGeometry,
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long firstSector,
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long sectorCount,
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byte[] bootCode)
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{
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NtfsFormatter formatter = new NtfsFormatter();
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formatter.Label = label;
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formatter.DiskGeometry = diskGeometry;
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formatter.FirstSector = firstSector;
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formatter.SectorCount = sectorCount;
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formatter.BootCode = bootCode;
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return formatter.Format(stream);
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}
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/// <summary>
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/// Initializes a new NTFS file system.
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/// </summary>
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/// <param name="stream">The stream to write the new file system to.</param>
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/// <param name="label">The label for the new file system.</param>
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/// <param name="diskGeometry">The disk geometry of the disk containing the new file system.</param>
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/// <param name="firstSector">The first sector of the new file system on the disk.</param>
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/// <param name="sectorCount">The number of sectors allocated to the new file system on the disk.</param>
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/// <param name="options">The formatting options.</param>
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/// <returns>The newly-initialized file system.</returns>
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public static NtfsFileSystem Format(
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Stream stream,
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string label,
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Geometry diskGeometry,
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long firstSector,
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long sectorCount,
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NtfsFormatOptions options)
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{
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NtfsFormatter formatter = new NtfsFormatter();
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formatter.Label = label;
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formatter.DiskGeometry = diskGeometry;
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formatter.FirstSector = firstSector;
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formatter.SectorCount = sectorCount;
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formatter.BootCode = options.BootCode;
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formatter.ComputerAccount = options.ComputerAccount;
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return formatter.Format(stream);
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}
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/// <summary>
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/// Initializes a new NTFS file system.
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/// </summary>
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/// <param name="volume">The volume to format.</param>
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/// <param name="label">The label for the new file system.</param>
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/// <returns>The newly-initialized file system.</returns>
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public static NtfsFileSystem Format(
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VolumeInfo volume,
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string label)
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{
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NtfsFormatter formatter = new NtfsFormatter();
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formatter.Label = label;
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formatter.DiskGeometry = volume.BiosGeometry ?? Geometry.Null;
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formatter.FirstSector = volume.PhysicalStartSector;
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formatter.SectorCount = volume.Length / Sizes.Sector;
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return formatter.Format(volume.Open());
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}
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/// <summary>
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/// Initializes a new NTFS file system.
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/// </summary>
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/// <param name="volume">The volume to format.</param>
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/// <param name="label">The label for the new file system.</param>
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/// <param name="bootCode">The Operating System's boot code.</param>
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/// <returns>The newly-initialized file system.</returns>
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public static NtfsFileSystem Format(
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VolumeInfo volume,
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string label,
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byte[] bootCode)
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{
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NtfsFormatter formatter = new NtfsFormatter();
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formatter.Label = label;
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formatter.DiskGeometry = volume.BiosGeometry ?? Geometry.Null;
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formatter.FirstSector = volume.PhysicalStartSector;
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formatter.SectorCount = volume.Length / Sizes.Sector;
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formatter.BootCode = bootCode;
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return formatter.Format(volume.Open());
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}
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/// <summary>
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/// Initializes a new NTFS file system.
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/// </summary>
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/// <param name="volume">The volume to format.</param>
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/// <param name="label">The label for the new file system.</param>
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/// <param name="options">The formatting options.</param>
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/// <returns>The newly-initialized file system.</returns>
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public static NtfsFileSystem Format(
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VolumeInfo volume,
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string label,
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NtfsFormatOptions options)
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{
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NtfsFormatter formatter = new NtfsFormatter();
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formatter.Label = label;
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formatter.DiskGeometry = volume.BiosGeometry ?? Geometry.Null;
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formatter.FirstSector = volume.PhysicalStartSector;
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formatter.SectorCount = volume.Length / Sizes.Sector;
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formatter.BootCode = options.BootCode;
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formatter.ComputerAccount = options.ComputerAccount;
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return formatter.Format(volume.Open());
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}
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/// <summary>
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/// Detects if a stream contains an NTFS file system.
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/// </summary>
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/// <param name="stream">The stream to inspect.</param>
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/// <returns><c>true</c> if NTFS is detected, else <c>false</c>.</returns>
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public static bool Detect(Stream stream)
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{
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if (stream.Length < 512)
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{
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return false;
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}
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stream.Position = 0;
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byte[] bytes = Utilities.ReadFully(stream, 512);
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BiosParameterBlock bpb = BiosParameterBlock.FromBytes(bytes, 0);
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return IsValidBPB(bpb, stream.Length);
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}
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/// <summary>
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/// Gets the Master File Table for this file system.
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/// </summary>
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/// <remarks>
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/// Use the returned object to explore the internals of the file system - most people will
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/// never need to use this.
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/// </remarks>
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/// <returns>The Master File Table.</returns>
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public Internals.MasterFileTable GetMasterFileTable()
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{
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return new Internals.MasterFileTable(_context, _context.Mft);
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}
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/// <summary>
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/// Copies an existing file to a new file, allowing overwriting of an existing file.
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/// </summary>
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/// <param name="sourceFile">The source file.</param>
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/// <param name="destinationFile">The destination file.</param>
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/// <param name="overwrite">Whether to permit over-writing of an existing file.</param>
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public override void CopyFile(string sourceFile, string destinationFile, bool overwrite)
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{
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using (new NtfsTransaction())
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{
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DirectoryEntry sourceParentDirEntry = GetDirectoryEntry(Utilities.GetDirectoryFromPath(sourceFile));
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if (sourceParentDirEntry == null || !sourceParentDirEntry.IsDirectory)
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{
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throw new FileNotFoundException("No such file", sourceFile);
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}
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Directory sourceParentDir = GetDirectory(sourceParentDirEntry.Reference);
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DirectoryEntry sourceEntry = sourceParentDir.GetEntryByName(Utilities.GetFileFromPath(sourceFile));
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if (sourceEntry == null || sourceEntry.IsDirectory)
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{
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throw new FileNotFoundException("No such file", sourceFile);
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}
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File origFile = GetFile(sourceEntry.Reference);
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DirectoryEntry destParentDirEntry = GetDirectoryEntry(Utilities.GetDirectoryFromPath(destinationFile));
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if (destParentDirEntry == null || !destParentDirEntry.IsDirectory)
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{
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throw new FileNotFoundException("Destination directory not found", destinationFile);
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}
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Directory destParentDir = GetDirectory(destParentDirEntry.Reference);
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DirectoryEntry destDirEntry = destParentDir.GetEntryByName(Utilities.GetFileFromPath(destinationFile));
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if (destDirEntry != null && !destDirEntry.IsDirectory)
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{
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if (overwrite)
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{
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if (destDirEntry.Reference.MftIndex == sourceEntry.Reference.MftIndex)
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{
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throw new IOException("Destination file already exists and is the source file");
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}
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File oldFile = GetFile(destDirEntry.Reference);
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destParentDir.RemoveEntry(destDirEntry);
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if (oldFile.HardLinkCount == 0)
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{
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oldFile.Delete();
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}
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}
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else
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{
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throw new IOException("Destination file already exists");
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}
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}
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File newFile = File.CreateNew(_context, destParentDir.StandardInformation.FileAttributes);
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foreach (var origStream in origFile.AllStreams)
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{
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NtfsStream newStream = newFile.GetStream(origStream.AttributeType, origStream.Name);
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switch (origStream.AttributeType)
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{
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case AttributeType.Data:
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if (newStream == null)
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{
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newStream = newFile.CreateStream(origStream.AttributeType, origStream.Name);
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}
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using (SparseStream s = origStream.Open(FileAccess.Read))
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using (SparseStream d = newStream.Open(FileAccess.Write))
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{
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byte[] buffer = new byte[64 * Sizes.OneKiB];
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int numRead;
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do
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{
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numRead = s.Read(buffer, 0, buffer.Length);
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d.Write(buffer, 0, numRead);
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}
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while (numRead != 0);
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}
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break;
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case AttributeType.StandardInformation:
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StandardInformation newSi = origStream.GetContent<StandardInformation>();
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newStream.SetContent<StandardInformation>(newSi);
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break;
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}
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}
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AddFileToDirectory(newFile, destParentDir, Utilities.GetFileFromPath(destinationFile), null);
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destParentDirEntry.UpdateFrom(destParentDir);
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}
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}
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/// <summary>
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/// Creates a directory.
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/// </summary>
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/// <param name="path">The path of the new directory.</param>
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public override void CreateDirectory(string path)
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{
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CreateDirectory(path, null);
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}
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/// <summary>
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/// Creates a directory.
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/// </summary>
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/// <param name="path">The path of the new directory.</param>
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/// <param name="options">Options controlling attributes of the new Director, or <c>null</c> for defaults.</param>
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public void CreateDirectory(string path, NewFileOptions options)
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{
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using (new NtfsTransaction())
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{
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string[] pathElements = path.Split(new char[] { '\\' }, StringSplitOptions.RemoveEmptyEntries);
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Directory focusDir = GetDirectory(MasterFileTable.RootDirIndex);
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DirectoryEntry focusDirEntry = focusDir.DirectoryEntry;
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for (int i = 0; i < pathElements.Length; ++i)
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{
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DirectoryEntry childDirEntry = focusDir.GetEntryByName(pathElements[i]);
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if (childDirEntry == null)
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{
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FileAttributeFlags newDirAttrs = focusDir.StandardInformation.FileAttributes;
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if (options != null && options.Compressed.HasValue)
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{
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if (options.Compressed.Value)
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{
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newDirAttrs |= FileAttributeFlags.Compressed;
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}
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else
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{
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newDirAttrs &= ~FileAttributeFlags.Compressed;
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}
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}
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Directory childDir = Directory.CreateNew(_context, newDirAttrs);
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try
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{
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childDirEntry = AddFileToDirectory(childDir, focusDir, pathElements[i], options);
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|
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RawSecurityDescriptor parentSd = DoGetSecurity(focusDir);
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RawSecurityDescriptor newSd;
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if (options != null && options.SecurityDescriptor != null)
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{
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newSd = options.SecurityDescriptor;
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}
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else
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|
{
|
|
newSd = SecurityDescriptor.CalcNewObjectDescriptor(parentSd, false);
|
|
}
|
|
|
|
DoSetSecurity(childDir, newSd);
|
|
childDirEntry.UpdateFrom(childDir);
|
|
|
|
// Update the directory entry by which we found the directory we've just modified
|
|
focusDirEntry.UpdateFrom(focusDir);
|
|
|
|
focusDir = childDir;
|
|
}
|
|
finally
|
|
{
|
|
if (childDir.HardLinkCount == 0)
|
|
{
|
|
childDir.Delete();
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
focusDir = GetDirectory(childDirEntry.Reference);
|
|
}
|
|
|
|
focusDirEntry = childDirEntry;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Deletes a directory.
|
|
/// </summary>
|
|
/// <param name="path">The path of the directory to delete.</param>
|
|
public override void DeleteDirectory(string path)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
if (string.IsNullOrEmpty(path))
|
|
{
|
|
throw new IOException("Unable to delete root directory");
|
|
}
|
|
|
|
string parent = Utilities.GetDirectoryFromPath(path);
|
|
|
|
DirectoryEntry parentDirEntry = GetDirectoryEntry(parent);
|
|
if (parentDirEntry == null || !parentDirEntry.IsDirectory)
|
|
{
|
|
throw new DirectoryNotFoundException("No such directory: " + path);
|
|
}
|
|
|
|
Directory parentDir = GetDirectory(parentDirEntry.Reference);
|
|
|
|
DirectoryEntry dirEntry = parentDir.GetEntryByName(Utilities.GetFileFromPath(path));
|
|
if (dirEntry == null || !dirEntry.IsDirectory)
|
|
{
|
|
throw new DirectoryNotFoundException("No such directory: " + path);
|
|
}
|
|
|
|
Directory dir = GetDirectory(dirEntry.Reference);
|
|
|
|
if (!dir.IsEmpty)
|
|
{
|
|
throw new IOException("Unable to delete non-empty directory");
|
|
}
|
|
|
|
if ((dirEntry.Details.FileAttributes & FileAttributes.ReparsePoint) != 0)
|
|
{
|
|
RemoveReparsePoint(dir);
|
|
}
|
|
|
|
RemoveFileFromDirectory(parentDir, dir, Utilities.GetFileFromPath(path));
|
|
|
|
if (dir.HardLinkCount == 0)
|
|
{
|
|
dir.Delete();
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Deletes a file.
|
|
/// </summary>
|
|
/// <param name="path">The path of the file to delete.</param>
|
|
public override void DeleteFile(string path)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
string attributeName;
|
|
AttributeType attributeType;
|
|
string dirEntryPath = ParsePath(path, out attributeName, out attributeType);
|
|
|
|
string parentDirPath = Utilities.GetDirectoryFromPath(dirEntryPath);
|
|
|
|
DirectoryEntry parentDirEntry = GetDirectoryEntry(parentDirPath);
|
|
if (parentDirEntry == null || !parentDirEntry.IsDirectory)
|
|
{
|
|
throw new FileNotFoundException("No such file", path);
|
|
}
|
|
|
|
Directory parentDir = GetDirectory(parentDirEntry.Reference);
|
|
|
|
DirectoryEntry dirEntry = parentDir.GetEntryByName(Utilities.GetFileFromPath(dirEntryPath));
|
|
if (dirEntry == null || dirEntry.IsDirectory)
|
|
{
|
|
throw new FileNotFoundException("No such file", path);
|
|
}
|
|
|
|
File file = GetFile(dirEntry.Reference);
|
|
|
|
if (string.IsNullOrEmpty(attributeName) && attributeType == AttributeType.Data)
|
|
{
|
|
if ((dirEntry.Details.FileAttributes & FileAttributes.ReparsePoint) != 0)
|
|
{
|
|
RemoveReparsePoint(file);
|
|
}
|
|
|
|
RemoveFileFromDirectory(parentDir, file, Utilities.GetFileFromPath(path));
|
|
|
|
if (file.HardLinkCount == 0)
|
|
{
|
|
file.Delete();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
NtfsStream attrStream = file.GetStream(attributeType, attributeName);
|
|
if (attrStream == null)
|
|
{
|
|
throw new FileNotFoundException("No such attribute: " + attributeName, path);
|
|
}
|
|
else
|
|
{
|
|
file.RemoveStream(attrStream);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Indicates if a directory exists.
|
|
/// </summary>
|
|
/// <param name="path">The path to test.</param>
|
|
/// <returns>true if the directory exists.</returns>
|
|
public override bool DirectoryExists(string path)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
// Special case - root directory
|
|
if (String.IsNullOrEmpty(path))
|
|
{
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
DirectoryEntry dirEntry = GetDirectoryEntry(path);
|
|
return dirEntry != null && (dirEntry.Details.FileAttributes & FileAttributes.Directory) != 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Indicates if a file exists.
|
|
/// </summary>
|
|
/// <param name="path">The path to test.</param>
|
|
/// <returns>true if the file exists.</returns>
|
|
public override bool FileExists(string path)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
DirectoryEntry dirEntry = GetDirectoryEntry(path);
|
|
return dirEntry != null && (dirEntry.Details.FileAttributes & FileAttributes.Directory) == 0;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the names of subdirectories in a specified directory matching a specified
|
|
/// search pattern, using a value to determine whether to search subdirectories.
|
|
/// </summary>
|
|
/// <param name="path">The path to search.</param>
|
|
/// <param name="searchPattern">The search string to match against.</param>
|
|
/// <param name="searchOption">Indicates whether to search subdirectories.</param>
|
|
/// <returns>Array of directories matching the search pattern.</returns>
|
|
public override string[] GetDirectories(string path, string searchPattern, SearchOption searchOption)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
Regex re = Utilities.ConvertWildcardsToRegEx(searchPattern);
|
|
|
|
List<string> dirs = new List<string>();
|
|
DoSearch(dirs, path, re, searchOption == SearchOption.AllDirectories, true, false);
|
|
return dirs.ToArray();
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the names of files in a specified directory matching a specified
|
|
/// search pattern, using a value to determine whether to search subdirectories.
|
|
/// </summary>
|
|
/// <param name="path">The path to search.</param>
|
|
/// <param name="searchPattern">The search string to match against.</param>
|
|
/// <param name="searchOption">Indicates whether to search subdirectories.</param>
|
|
/// <returns>Array of files matching the search pattern.</returns>
|
|
public override string[] GetFiles(string path, string searchPattern, SearchOption searchOption)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
Regex re = Utilities.ConvertWildcardsToRegEx(searchPattern);
|
|
|
|
List<string> results = new List<string>();
|
|
DoSearch(results, path, re, searchOption == SearchOption.AllDirectories, false, true);
|
|
return results.ToArray();
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the names of all files and subdirectories in a specified directory.
|
|
/// </summary>
|
|
/// <param name="path">The path to search.</param>
|
|
/// <returns>Array of files and subdirectories.</returns>
|
|
public override string[] GetFileSystemEntries(string path)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
DirectoryEntry parentDirEntry = GetDirectoryEntry(path);
|
|
if (parentDirEntry == null)
|
|
{
|
|
throw new DirectoryNotFoundException(string.Format(CultureInfo.InvariantCulture, "The directory '{0}' does not exist", path));
|
|
}
|
|
|
|
Directory parentDir = GetDirectory(parentDirEntry.Reference);
|
|
|
|
return Utilities.Map<DirectoryEntry, string>(parentDir.GetAllEntries(true), (m) => Utilities.CombinePaths(path, m.Details.FileName));
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the names of files and subdirectories in a specified directory matching a specified
|
|
/// search pattern.
|
|
/// </summary>
|
|
/// <param name="path">The path to search.</param>
|
|
/// <param name="searchPattern">The search string to match against.</param>
|
|
/// <returns>Array of files and subdirectories matching the search pattern.</returns>
|
|
public override string[] GetFileSystemEntries(string path, string searchPattern)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
// TODO: Be smarter, use the B*Tree for better performance when the start of the pattern is known
|
|
// characters
|
|
Regex re = Utilities.ConvertWildcardsToRegEx(searchPattern);
|
|
|
|
DirectoryEntry parentDirEntry = GetDirectoryEntry(path);
|
|
if (parentDirEntry == null)
|
|
{
|
|
throw new DirectoryNotFoundException(string.Format(CultureInfo.InvariantCulture, "The directory '{0}' does not exist", path));
|
|
}
|
|
|
|
Directory parentDir = GetDirectory(parentDirEntry.Reference);
|
|
|
|
List<string> result = new List<string>();
|
|
foreach (DirectoryEntry dirEntry in parentDir.GetAllEntries(true))
|
|
{
|
|
if (re.IsMatch(dirEntry.Details.FileName))
|
|
{
|
|
result.Add(Utilities.CombinePaths(path, dirEntry.Details.FileName));
|
|
}
|
|
}
|
|
|
|
return result.ToArray();
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Moves a directory.
|
|
/// </summary>
|
|
/// <param name="sourceDirectoryName">The directory to move.</param>
|
|
/// <param name="destinationDirectoryName">The target directory name.</param>
|
|
public override void MoveDirectory(string sourceDirectoryName, string destinationDirectoryName)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
DirectoryEntry sourceParentDirEntry = GetDirectoryEntry(Utilities.GetDirectoryFromPath(sourceDirectoryName));
|
|
if (sourceParentDirEntry == null || !sourceParentDirEntry.IsDirectory)
|
|
{
|
|
throw new DirectoryNotFoundException("No such directory: " + sourceDirectoryName);
|
|
}
|
|
|
|
Directory sourceParentDir = GetDirectory(sourceParentDirEntry.Reference);
|
|
|
|
DirectoryEntry sourceEntry = sourceParentDir.GetEntryByName(Utilities.GetFileFromPath(sourceDirectoryName));
|
|
if (sourceEntry == null || !sourceEntry.IsDirectory)
|
|
{
|
|
throw new DirectoryNotFoundException("No such directory: " + sourceDirectoryName);
|
|
}
|
|
|
|
File file = GetFile(sourceEntry.Reference);
|
|
|
|
DirectoryEntry destParentDirEntry = GetDirectoryEntry(Utilities.GetDirectoryFromPath(destinationDirectoryName));
|
|
if (destParentDirEntry == null || !destParentDirEntry.IsDirectory)
|
|
{
|
|
throw new DirectoryNotFoundException("Destination directory not found: " + destinationDirectoryName);
|
|
}
|
|
|
|
Directory destParentDir = GetDirectory(destParentDirEntry.Reference);
|
|
|
|
DirectoryEntry destDirEntry = destParentDir.GetEntryByName(Utilities.GetFileFromPath(destinationDirectoryName));
|
|
if (destDirEntry != null)
|
|
{
|
|
throw new IOException("Destination directory already exists");
|
|
}
|
|
|
|
RemoveFileFromDirectory(sourceParentDir, file, sourceEntry.Details.FileName);
|
|
AddFileToDirectory(file, destParentDir, Utilities.GetFileFromPath(destinationDirectoryName), null);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Moves a file, allowing an existing file to be overwritten.
|
|
/// </summary>
|
|
/// <param name="sourceName">The file to move.</param>
|
|
/// <param name="destinationName">The target file name.</param>
|
|
/// <param name="overwrite">Whether to permit a destination file to be overwritten.</param>
|
|
public override void MoveFile(string sourceName, string destinationName, bool overwrite)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
DirectoryEntry sourceParentDirEntry = GetDirectoryEntry(Utilities.GetDirectoryFromPath(sourceName));
|
|
if (sourceParentDirEntry == null || !sourceParentDirEntry.IsDirectory)
|
|
{
|
|
throw new FileNotFoundException("No such file", sourceName);
|
|
}
|
|
|
|
Directory sourceParentDir = GetDirectory(sourceParentDirEntry.Reference);
|
|
|
|
DirectoryEntry sourceEntry = sourceParentDir.GetEntryByName(Utilities.GetFileFromPath(sourceName));
|
|
if (sourceEntry == null || sourceEntry.IsDirectory)
|
|
{
|
|
throw new FileNotFoundException("No such file", sourceName);
|
|
}
|
|
|
|
File file = GetFile(sourceEntry.Reference);
|
|
|
|
DirectoryEntry destParentDirEntry = GetDirectoryEntry(Utilities.GetDirectoryFromPath(destinationName));
|
|
if (destParentDirEntry == null || !destParentDirEntry.IsDirectory)
|
|
{
|
|
throw new FileNotFoundException("Destination directory not found", destinationName);
|
|
}
|
|
|
|
Directory destParentDir = GetDirectory(destParentDirEntry.Reference);
|
|
|
|
DirectoryEntry destDirEntry = destParentDir.GetEntryByName(Utilities.GetFileFromPath(destinationName));
|
|
if (destDirEntry != null && !destDirEntry.IsDirectory)
|
|
{
|
|
if (overwrite)
|
|
{
|
|
if (destDirEntry.Reference.MftIndex == sourceEntry.Reference.MftIndex)
|
|
{
|
|
throw new IOException("Destination file already exists and is the source file");
|
|
}
|
|
|
|
File oldFile = GetFile(destDirEntry.Reference);
|
|
destParentDir.RemoveEntry(destDirEntry);
|
|
if (oldFile.HardLinkCount == 0)
|
|
{
|
|
oldFile.Delete();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
throw new IOException("Destination file already exists");
|
|
}
|
|
}
|
|
|
|
RemoveFileFromDirectory(sourceParentDir, file, sourceEntry.Details.FileName);
|
|
AddFileToDirectory(file, destParentDir, Utilities.GetFileFromPath(destinationName), null);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Opens the specified file.
|
|
/// </summary>
|
|
/// <param name="path">The full path of the file to open.</param>
|
|
/// <param name="mode">The file mode for the created stream.</param>
|
|
/// <param name="access">The access permissions for the returned stream.</param>
|
|
/// <returns>The new stream.</returns>
|
|
public override SparseStream OpenFile(string path, FileMode mode, FileAccess access)
|
|
{
|
|
return OpenFile(path, mode, access, null);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Opens the specified file.
|
|
/// </summary>
|
|
/// <param name="path">The full path of the file to open.</param>
|
|
/// <param name="mode">The file mode for the created stream.</param>
|
|
/// <param name="access">The access permissions for the returned stream.</param>
|
|
/// <param name="options">Options controlling attributes of a new file, or <c>null</c> for defaults (ignored if file exists).</param>
|
|
/// <returns>The new stream.</returns>
|
|
public SparseStream OpenFile(string path, FileMode mode, FileAccess access, NewFileOptions options)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
string attributeName;
|
|
AttributeType attributeType;
|
|
string dirEntryPath = ParsePath(path, out attributeName, out attributeType);
|
|
|
|
DirectoryEntry entry = GetDirectoryEntry(dirEntryPath);
|
|
if (entry == null)
|
|
{
|
|
if (mode == FileMode.Open)
|
|
{
|
|
throw new FileNotFoundException("No such file", path);
|
|
}
|
|
else
|
|
{
|
|
entry = CreateNewFile(dirEntryPath, options);
|
|
}
|
|
}
|
|
else if (mode == FileMode.CreateNew)
|
|
{
|
|
throw new IOException("File already exists");
|
|
}
|
|
|
|
if ((entry.Details.FileAttributes & FileAttributes.Directory) != 0 && attributeType == AttributeType.Data)
|
|
{
|
|
throw new IOException("Attempt to open directory as a file");
|
|
}
|
|
else
|
|
{
|
|
File file = GetFile(entry.Reference);
|
|
NtfsStream ntfsStream = file.GetStream(attributeType, attributeName);
|
|
|
|
if (ntfsStream == null)
|
|
{
|
|
if (mode == FileMode.Create || mode == FileMode.OpenOrCreate)
|
|
{
|
|
ntfsStream = file.CreateStream(attributeType, attributeName);
|
|
}
|
|
else
|
|
{
|
|
throw new FileNotFoundException("No such attribute on file", path);
|
|
}
|
|
}
|
|
|
|
SparseStream stream = new NtfsFileStream(this, entry, attributeType, attributeName, access);
|
|
|
|
if (mode == FileMode.Create || mode == FileMode.Truncate)
|
|
{
|
|
stream.SetLength(0);
|
|
}
|
|
|
|
return stream;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Opens an existing file stream.
|
|
/// </summary>
|
|
/// <param name="file">The file containing the stream.</param>
|
|
/// <param name="type">The type of the stream.</param>
|
|
/// <param name="name">The name of the stream.</param>
|
|
/// <param name="access">The desired access to the stream.</param>
|
|
/// <returns>A stream that can be used to access the file stream.</returns>
|
|
[Obsolete(@"Use OpenFile with filename:attributename:$attributetype syntax (e.g. \FILE.TXT:STREAM:$DATA)", false)]
|
|
public SparseStream OpenRawStream(string file, AttributeType type, string name, FileAccess access)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
DirectoryEntry entry = GetDirectoryEntry(file);
|
|
if (entry == null)
|
|
{
|
|
throw new FileNotFoundException("No such file", file);
|
|
}
|
|
|
|
File fileObj = GetFile(entry.Reference);
|
|
return fileObj.OpenStream(type, name, access);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the attributes of a file or directory.
|
|
/// </summary>
|
|
/// <param name="path">The file or directory to inspect.</param>
|
|
/// <returns>The attributes of the file or directory.</returns>
|
|
public override FileAttributes GetAttributes(string path)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
DirectoryEntry dirEntry = GetDirectoryEntry(path);
|
|
if (dirEntry == null)
|
|
{
|
|
throw new FileNotFoundException("File not found", path);
|
|
}
|
|
else
|
|
{
|
|
return dirEntry.Details.FileAttributes;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sets the attributes of a file or directory.
|
|
/// </summary>
|
|
/// <param name="path">The file or directory to change.</param>
|
|
/// <param name="newValue">The new attributes of the file or directory.</param>
|
|
public override void SetAttributes(string path, FileAttributes newValue)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
DirectoryEntry dirEntry = GetDirectoryEntry(path);
|
|
if (dirEntry == null)
|
|
{
|
|
throw new FileNotFoundException("File not found", path);
|
|
}
|
|
|
|
FileAttributes oldValue = dirEntry.Details.FileAttributes;
|
|
FileAttributes changedAttribs = oldValue ^ newValue;
|
|
|
|
if (changedAttribs == 0)
|
|
{
|
|
// Abort - nothing changed
|
|
return;
|
|
}
|
|
|
|
if ((changedAttribs & NonSettableFileAttributes) != 0)
|
|
{
|
|
throw new ArgumentException("Attempt to change attributes that are read-only", "newValue");
|
|
}
|
|
|
|
File file = GetFile(dirEntry.Reference);
|
|
|
|
if ((changedAttribs & FileAttributes.SparseFile) != 0)
|
|
{
|
|
if (dirEntry.IsDirectory)
|
|
{
|
|
throw new ArgumentException("Attempt to change sparse attribute on a directory", "newValue");
|
|
}
|
|
|
|
if ((newValue & FileAttributes.SparseFile) == 0)
|
|
{
|
|
throw new ArgumentException("Attempt to remove sparse attribute from file", "newValue");
|
|
}
|
|
else
|
|
{
|
|
NtfsAttribute ntfsAttr = file.GetAttribute(AttributeType.Data, null);
|
|
if ((ntfsAttr.Flags & AttributeFlags.Compressed) != 0)
|
|
{
|
|
throw new ArgumentException("Attempt to mark compressed file as sparse", "newValue");
|
|
}
|
|
|
|
ntfsAttr.Flags |= AttributeFlags.Sparse;
|
|
if (ntfsAttr.IsNonResident)
|
|
{
|
|
ntfsAttr.CompressedDataSize = ntfsAttr.PrimaryRecord.AllocatedLength;
|
|
ntfsAttr.CompressionUnitSize = 16;
|
|
((NonResidentAttributeBuffer)ntfsAttr.RawBuffer).AlignVirtualClusterCount();
|
|
}
|
|
}
|
|
}
|
|
|
|
if ((changedAttribs & FileAttributes.Compressed) != 0 && !dirEntry.IsDirectory)
|
|
{
|
|
if ((newValue & FileAttributes.Compressed) == 0)
|
|
{
|
|
throw new ArgumentException("Attempt to remove compressed attribute from file", "newValue");
|
|
}
|
|
else
|
|
{
|
|
NtfsAttribute ntfsAttr = file.GetAttribute(AttributeType.Data, null);
|
|
if ((ntfsAttr.Flags & AttributeFlags.Sparse) != 0)
|
|
{
|
|
throw new ArgumentException("Attempt to mark sparse file as compressed", "newValue");
|
|
}
|
|
|
|
ntfsAttr.Flags |= AttributeFlags.Compressed;
|
|
if (ntfsAttr.IsNonResident)
|
|
{
|
|
ntfsAttr.CompressedDataSize = ntfsAttr.PrimaryRecord.AllocatedLength;
|
|
ntfsAttr.CompressionUnitSize = 16;
|
|
((NonResidentAttributeBuffer)ntfsAttr.RawBuffer).AlignVirtualClusterCount();
|
|
}
|
|
}
|
|
}
|
|
|
|
UpdateStandardInformation(dirEntry, file, delegate(StandardInformation si) { si.FileAttributes = FileNameRecord.SetAttributes(newValue, si.FileAttributes); });
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the creation time (in UTC) of a file or directory.
|
|
/// </summary>
|
|
/// <param name="path">The path of the file or directory.</param>
|
|
/// <returns>The creation time.</returns>
|
|
public override DateTime GetCreationTimeUtc(string path)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
DirectoryEntry dirEntry = GetDirectoryEntry(path);
|
|
if (dirEntry == null)
|
|
{
|
|
throw new FileNotFoundException("File not found", path);
|
|
}
|
|
else
|
|
{
|
|
return dirEntry.Details.CreationTime;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sets the creation time (in UTC) of a file or directory.
|
|
/// </summary>
|
|
/// <param name="path">The path of the file or directory.</param>
|
|
/// <param name="newTime">The new time to set.</param>
|
|
public override void SetCreationTimeUtc(string path, DateTime newTime)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
UpdateStandardInformation(path, delegate(StandardInformation si) { si.CreationTime = newTime; });
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the last access time (in UTC) of a file or directory.
|
|
/// </summary>
|
|
/// <param name="path">The path of the file or directory.</param>
|
|
/// <returns>The last access time.</returns>
|
|
public override DateTime GetLastAccessTimeUtc(string path)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
DirectoryEntry dirEntry = GetDirectoryEntry(path);
|
|
if (dirEntry == null)
|
|
{
|
|
throw new FileNotFoundException("File not found", path);
|
|
}
|
|
else
|
|
{
|
|
return dirEntry.Details.LastAccessTime;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sets the last access time (in UTC) of a file or directory.
|
|
/// </summary>
|
|
/// <param name="path">The path of the file or directory.</param>
|
|
/// <param name="newTime">The new time to set.</param>
|
|
public override void SetLastAccessTimeUtc(string path, DateTime newTime)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
UpdateStandardInformation(path, delegate(StandardInformation si) { si.LastAccessTime = newTime; });
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the last modification time (in UTC) of a file or directory.
|
|
/// </summary>
|
|
/// <param name="path">The path of the file or directory.</param>
|
|
/// <returns>The last write time.</returns>
|
|
public override DateTime GetLastWriteTimeUtc(string path)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
DirectoryEntry dirEntry = GetDirectoryEntry(path);
|
|
if (dirEntry == null)
|
|
{
|
|
throw new FileNotFoundException("File not found", path);
|
|
}
|
|
else
|
|
{
|
|
return dirEntry.Details.ModificationTime;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sets the last modification time (in local time) of a file or directory.
|
|
/// </summary>
|
|
/// <param name="path">The path of the file or directory.</param>
|
|
/// <param name="newTime">The new time to set.</param>
|
|
public override void SetLastWriteTimeUtc(string path, DateTime newTime)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
UpdateStandardInformation(path, delegate(StandardInformation si) { si.ModificationTime = newTime; });
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the length of a file.
|
|
/// </summary>
|
|
/// <param name="path">The path to the file.</param>
|
|
/// <returns>The length in bytes.</returns>
|
|
public override long GetFileLength(string path)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
string attributeName;
|
|
AttributeType attributeType;
|
|
string dirEntryPath = ParsePath(path, out attributeName, out attributeType);
|
|
|
|
DirectoryEntry dirEntry = GetDirectoryEntry(dirEntryPath);
|
|
if (dirEntry == null)
|
|
{
|
|
throw new FileNotFoundException("File not found", path);
|
|
}
|
|
|
|
// Ordinary file length request, use info from directory entry for efficiency - if allowed
|
|
if (NtfsOptions.FileLengthFromDirectoryEntries && attributeName == null && attributeType == AttributeType.Data)
|
|
{
|
|
return (long)dirEntry.Details.RealSize;
|
|
}
|
|
|
|
// Alternate stream / attribute, pull info from attribute record
|
|
File file = GetFile(dirEntry.Reference);
|
|
var attr = file.GetAttribute(attributeType, attributeName);
|
|
if (attr == null)
|
|
{
|
|
throw new FileNotFoundException(string.Format(CultureInfo.InvariantCulture, "No such attribute '{0}({1})'", attributeName, attributeType));
|
|
}
|
|
|
|
return attr.Length;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Converts a cluster (index) into an absolute byte position in the underlying stream.
|
|
/// </summary>
|
|
/// <param name="cluster">The cluster to convert.</param>
|
|
/// <returns>The corresponding absolute byte position.</returns>
|
|
public long ClusterToOffset(long cluster)
|
|
{
|
|
return cluster * ClusterSize;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Converts an absolute byte position in the underlying stream to a cluster (index).
|
|
/// </summary>
|
|
/// <param name="offset">The byte position to convert.</param>
|
|
/// <returns>The cluster containing the specified byte.</returns>
|
|
public long OffsetToCluster(long offset)
|
|
{
|
|
return offset / ClusterSize;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Converts a file name to the list of clusters occupied by the file's data.
|
|
/// </summary>
|
|
/// <param name="path">The path to inspect.</param>
|
|
/// <returns>The clusters as a list of cluster ranges.</returns>
|
|
/// <remarks>Note that in some file systems, small files may not have dedicated
|
|
/// clusters. Only dedicated clusters will be returned.</remarks>
|
|
public Range<long, long>[] PathToClusters(string path)
|
|
{
|
|
string plainPath;
|
|
string attributeName;
|
|
SplitPath(path, out plainPath, out attributeName);
|
|
|
|
DirectoryEntry dirEntry = GetDirectoryEntry(plainPath);
|
|
if (dirEntry == null || dirEntry.IsDirectory)
|
|
{
|
|
throw new FileNotFoundException("No such file", path);
|
|
}
|
|
|
|
File file = GetFile(dirEntry.Reference);
|
|
|
|
NtfsStream stream = file.GetStream(AttributeType.Data, attributeName);
|
|
if (stream == null)
|
|
{
|
|
throw new FileNotFoundException(string.Format(CultureInfo.InvariantCulture, "File does not contain '{0}' data attribute", attributeName), path);
|
|
}
|
|
|
|
return stream.GetClusters();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Converts a file name to the extents containing its data.
|
|
/// </summary>
|
|
/// <param name="path">The path to inspect.</param>
|
|
/// <returns>The file extents, as absolute byte positions in the underlying stream.</returns>
|
|
/// <remarks>Use this method with caution - NTFS supports encrypted, sparse and compressed files
|
|
/// where bytes are not directly stored in extents. Small files may be entirely stored in the
|
|
/// Master File Table, where corruption protection algorithms mean that some bytes do not contain
|
|
/// the expected values. This method merely indicates where file data is stored,
|
|
/// not what's stored. To access the contents of a file, use OpenFile.</remarks>
|
|
public StreamExtent[] PathToExtents(string path)
|
|
{
|
|
string plainPath;
|
|
string attributeName;
|
|
SplitPath(path, out plainPath, out attributeName);
|
|
|
|
DirectoryEntry dirEntry = GetDirectoryEntry(plainPath);
|
|
if (dirEntry == null || dirEntry.IsDirectory)
|
|
{
|
|
throw new FileNotFoundException("No such file", path);
|
|
}
|
|
|
|
File file = GetFile(dirEntry.Reference);
|
|
|
|
NtfsStream stream = file.GetStream(AttributeType.Data, attributeName);
|
|
if (stream == null)
|
|
{
|
|
throw new FileNotFoundException(string.Format(CultureInfo.InvariantCulture, "File does not contain '{0}' data attribute", attributeName), path);
|
|
}
|
|
|
|
return stream.GetAbsoluteExtents();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets an object that can convert between clusters and files.
|
|
/// </summary>
|
|
/// <returns>The cluster map.</returns>
|
|
public ClusterMap BuildClusterMap()
|
|
{
|
|
return _context.Mft.GetClusterMap();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates an NTFS hard link to an existing file.
|
|
/// </summary>
|
|
/// <param name="sourceName">An existing name of the file.</param>
|
|
/// <param name="destinationName">The name of the new hard link to the file.</param>
|
|
public void CreateHardLink(string sourceName, string destinationName)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
DirectoryEntry sourceDirEntry = GetDirectoryEntry(sourceName);
|
|
if (sourceDirEntry == null)
|
|
{
|
|
throw new FileNotFoundException("Source file not found", sourceName);
|
|
}
|
|
|
|
string destinationDirName = Utilities.GetDirectoryFromPath(destinationName);
|
|
DirectoryEntry destinationDirSelfEntry = GetDirectoryEntry(destinationDirName);
|
|
if (destinationDirSelfEntry == null || (destinationDirSelfEntry.Details.FileAttributes & FileAttributes.Directory) == 0)
|
|
{
|
|
throw new FileNotFoundException("Destination directory not found", destinationDirName);
|
|
}
|
|
|
|
Directory destinationDir = GetDirectory(destinationDirSelfEntry.Reference);
|
|
if (destinationDir == null)
|
|
{
|
|
throw new FileNotFoundException("Destination directory not found", destinationDirName);
|
|
}
|
|
|
|
DirectoryEntry destinationDirEntry = GetDirectoryEntry(destinationDir, Utilities.GetFileFromPath(destinationName));
|
|
if (destinationDirEntry != null)
|
|
{
|
|
throw new IOException("A file with this name already exists: " + destinationName);
|
|
}
|
|
|
|
File file = GetFile(sourceDirEntry.Reference);
|
|
destinationDir.AddEntry(file, Utilities.GetFileFromPath(destinationName), FileNameNamespace.Posix);
|
|
destinationDirSelfEntry.UpdateFrom(destinationDir);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the number of hard links to a given file or directory.
|
|
/// </summary>
|
|
/// <param name="path">The path of the file or directory.</param>
|
|
/// <returns>The number of hard links.</returns>
|
|
/// <remarks>All files have at least one hard link.</remarks>
|
|
public int GetHardLinkCount(string path)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
DirectoryEntry dirEntry = GetDirectoryEntry(path);
|
|
if (dirEntry == null)
|
|
{
|
|
throw new FileNotFoundException("File not found", path);
|
|
}
|
|
|
|
File file = GetFile(dirEntry.Reference);
|
|
|
|
if (!_context.Options.HideDosFileNames)
|
|
{
|
|
return file.HardLinkCount;
|
|
}
|
|
else
|
|
{
|
|
int numHardLinks = 0;
|
|
|
|
foreach (var fnStream in file.GetStreams(AttributeType.FileName, null))
|
|
{
|
|
var fnr = fnStream.GetContent<FileNameRecord>();
|
|
if (fnr.FileNameNamespace != FileNameNamespace.Dos)
|
|
{
|
|
++numHardLinks;
|
|
}
|
|
}
|
|
|
|
return numHardLinks;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Indicates whether the file is known by other names.
|
|
/// </summary>
|
|
/// <param name="path">The file to inspect.</param>
|
|
/// <returns><c>true</c> if the file has other names, else <c>false</c>.</returns>
|
|
public bool HasHardLinks(string path)
|
|
{
|
|
return GetHardLinkCount(path) > 1;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the security descriptor associated with the file or directory.
|
|
/// </summary>
|
|
/// <param name="path">The file or directory to inspect.</param>
|
|
/// <returns>The security descriptor.</returns>
|
|
public RawSecurityDescriptor GetSecurity(string path)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
DirectoryEntry dirEntry = GetDirectoryEntry(path);
|
|
if (dirEntry == null)
|
|
{
|
|
throw new FileNotFoundException("File not found", path);
|
|
}
|
|
else
|
|
{
|
|
File file = GetFile(dirEntry.Reference);
|
|
return DoGetSecurity(file);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sets the security descriptor associated with the file or directory.
|
|
/// </summary>
|
|
/// <param name="path">The file or directory to change.</param>
|
|
/// <param name="securityDescriptor">The new security descriptor.</param>
|
|
public void SetSecurity(string path, RawSecurityDescriptor securityDescriptor)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
DirectoryEntry dirEntry = GetDirectoryEntry(path);
|
|
if (dirEntry == null)
|
|
{
|
|
throw new FileNotFoundException("File not found", path);
|
|
}
|
|
else
|
|
{
|
|
File file = GetFile(dirEntry.Reference);
|
|
DoSetSecurity(file, securityDescriptor);
|
|
|
|
// Update the directory entry used to open the file
|
|
dirEntry.UpdateFrom(file);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sets the reparse point data on a file or directory.
|
|
/// </summary>
|
|
/// <param name="path">The file to set the reparse point on.</param>
|
|
/// <param name="reparsePoint">The new reparse point.</param>
|
|
public void SetReparsePoint(string path, ReparsePoint reparsePoint)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
DirectoryEntry dirEntry = GetDirectoryEntry(path);
|
|
if (dirEntry == null)
|
|
{
|
|
throw new FileNotFoundException("File not found", path);
|
|
}
|
|
else
|
|
{
|
|
File file = GetFile(dirEntry.Reference);
|
|
|
|
NtfsStream stream = file.GetStream(AttributeType.ReparsePoint, null);
|
|
if (stream != null)
|
|
{
|
|
// If there's an existing reparse point, unhook it.
|
|
using (Stream contentStream = stream.Open(FileAccess.Read))
|
|
{
|
|
byte[] oldRpBuffer = Utilities.ReadFully(contentStream, (int)contentStream.Length);
|
|
ReparsePointRecord rp = new ReparsePointRecord();
|
|
rp.ReadFrom(oldRpBuffer, 0);
|
|
_context.ReparsePoints.Remove(rp.Tag, dirEntry.Reference);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
stream = file.CreateStream(AttributeType.ReparsePoint, null);
|
|
}
|
|
|
|
// Set the new content
|
|
ReparsePointRecord newRp = new ReparsePointRecord();
|
|
newRp.Tag = (uint)reparsePoint.Tag;
|
|
newRp.Content = reparsePoint.Content;
|
|
|
|
byte[] contentBuffer = new byte[newRp.Size];
|
|
newRp.WriteTo(contentBuffer, 0);
|
|
using (Stream contentStream = stream.Open(FileAccess.ReadWrite))
|
|
{
|
|
contentStream.Write(contentBuffer, 0, contentBuffer.Length);
|
|
contentStream.SetLength(contentBuffer.Length);
|
|
}
|
|
|
|
// Update the standard information attribute - so it reflects the actual file state
|
|
NtfsStream stdInfoStream = file.GetStream(AttributeType.StandardInformation, null);
|
|
StandardInformation si = stdInfoStream.GetContent<StandardInformation>();
|
|
si.FileAttributes = si.FileAttributes | FileAttributeFlags.ReparsePoint;
|
|
stdInfoStream.SetContent(si);
|
|
|
|
// Update the directory entry used to open the file, so it's accurate
|
|
dirEntry.Details.EASizeOrReparsePointTag = newRp.Tag;
|
|
dirEntry.UpdateFrom(file);
|
|
|
|
// Write attribute changes back to the Master File Table
|
|
file.UpdateRecordInMft();
|
|
|
|
// Add the reparse point to the index
|
|
_context.ReparsePoints.Add(newRp.Tag, dirEntry.Reference);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the reparse point data associated with a file or directory.
|
|
/// </summary>
|
|
/// <param name="path">The file to query.</param>
|
|
/// <returns>The reparse point information.</returns>
|
|
public ReparsePoint GetReparsePoint(string path)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
DirectoryEntry dirEntry = GetDirectoryEntry(path);
|
|
if (dirEntry == null)
|
|
{
|
|
throw new FileNotFoundException("File not found", path);
|
|
}
|
|
else
|
|
{
|
|
File file = GetFile(dirEntry.Reference);
|
|
|
|
NtfsStream stream = file.GetStream(AttributeType.ReparsePoint, null);
|
|
if (stream != null)
|
|
{
|
|
ReparsePointRecord rp = new ReparsePointRecord();
|
|
|
|
using (Stream contentStream = stream.Open(FileAccess.Read))
|
|
{
|
|
byte[] buffer = Utilities.ReadFully(contentStream, (int)contentStream.Length);
|
|
rp.ReadFrom(buffer, 0);
|
|
return new ReparsePoint((int)rp.Tag, rp.Content);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Removes a reparse point from a file or directory, without deleting the file or directory.
|
|
/// </summary>
|
|
/// <param name="path">The path to the file or directory to remove the reparse point from.</param>
|
|
public void RemoveReparsePoint(string path)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
DirectoryEntry dirEntry = GetDirectoryEntry(path);
|
|
if (dirEntry == null)
|
|
{
|
|
throw new FileNotFoundException("File not found", path);
|
|
}
|
|
else
|
|
{
|
|
File file = GetFile(dirEntry.Reference);
|
|
RemoveReparsePoint(file);
|
|
|
|
// Update the directory entry used to open the file, so it's accurate
|
|
dirEntry.UpdateFrom(file);
|
|
|
|
// Write attribute changes back to the Master File Table
|
|
file.UpdateRecordInMft();
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the short name for a given path.
|
|
/// </summary>
|
|
/// <param name="path">The path to convert.</param>
|
|
/// <returns>The short name.</returns>
|
|
/// <remarks>
|
|
/// This method only gets the short name for the final part of the path, to
|
|
/// convert a complete path, call this method repeatedly, once for each path
|
|
/// segment. If there is no short name for the given path,<c>null</c> is
|
|
/// returned.
|
|
/// </remarks>
|
|
public string GetShortName(string path)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
string parentPath = Utilities.GetDirectoryFromPath(path);
|
|
DirectoryEntry parentEntry = GetDirectoryEntry(parentPath);
|
|
if (parentEntry == null || (parentEntry.Details.FileAttributes & FileAttributes.Directory) == 0)
|
|
{
|
|
throw new DirectoryNotFoundException("Parent directory not found");
|
|
}
|
|
|
|
Directory dir = GetDirectory(parentEntry.Reference);
|
|
if (dir == null)
|
|
{
|
|
throw new DirectoryNotFoundException("Parent directory not found");
|
|
}
|
|
|
|
DirectoryEntry givenEntry = dir.GetEntryByName(Utilities.GetFileFromPath(path));
|
|
if (givenEntry == null)
|
|
{
|
|
throw new FileNotFoundException("Path not found", path);
|
|
}
|
|
|
|
if (givenEntry.Details.FileNameNamespace == FileNameNamespace.Dos)
|
|
{
|
|
return givenEntry.Details.FileName;
|
|
}
|
|
else if (givenEntry.Details.FileNameNamespace == FileNameNamespace.Win32)
|
|
{
|
|
File file = GetFile(givenEntry.Reference);
|
|
|
|
foreach (var stream in file.GetStreams(AttributeType.FileName, null))
|
|
{
|
|
FileNameRecord fnr = stream.GetContent<FileNameRecord>();
|
|
if (fnr.ParentDirectory.Equals(givenEntry.Details.ParentDirectory)
|
|
&& fnr.FileNameNamespace == FileNameNamespace.Dos)
|
|
{
|
|
return fnr.FileName;
|
|
}
|
|
}
|
|
}
|
|
|
|
return null;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sets the short name for a given file or directory.
|
|
/// </summary>
|
|
/// <param name="path">The full path to the file or directory to change.</param>
|
|
/// <param name="shortName">The shortName, which should not include a path.</param>
|
|
public void SetShortName(string path, string shortName)
|
|
{
|
|
if (!Utilities.Is8Dot3(shortName))
|
|
{
|
|
throw new ArgumentException("Short name is not a valid 8.3 file name", "shortName");
|
|
}
|
|
|
|
using (new NtfsTransaction())
|
|
{
|
|
string parentPath = Utilities.GetDirectoryFromPath(path);
|
|
DirectoryEntry parentEntry = GetDirectoryEntry(parentPath);
|
|
if (parentEntry == null || (parentEntry.Details.FileAttributes & FileAttributes.Directory) == 0)
|
|
{
|
|
throw new DirectoryNotFoundException("Parent directory not found");
|
|
}
|
|
|
|
Directory dir = GetDirectory(parentEntry.Reference);
|
|
if (dir == null)
|
|
{
|
|
throw new DirectoryNotFoundException("Parent directory not found");
|
|
}
|
|
|
|
DirectoryEntry givenEntry = dir.GetEntryByName(Utilities.GetFileFromPath(path));
|
|
if (givenEntry == null)
|
|
{
|
|
throw new FileNotFoundException("Path not found", path);
|
|
}
|
|
|
|
FileNameNamespace givenNamespace = givenEntry.Details.FileNameNamespace;
|
|
File file = GetFile(givenEntry.Reference);
|
|
|
|
if (givenNamespace == FileNameNamespace.Posix && file.HasWin32OrDosName)
|
|
{
|
|
throw new InvalidOperationException("Cannot set a short name on hard links");
|
|
}
|
|
|
|
// Convert Posix/Win32AndDos to just Win32
|
|
if (givenEntry.Details.FileNameNamespace != FileNameNamespace.Win32)
|
|
{
|
|
dir.RemoveEntry(givenEntry);
|
|
dir.AddEntry(file, givenEntry.Details.FileName, FileNameNamespace.Win32);
|
|
}
|
|
|
|
// Remove any existing Dos names, and set the new one
|
|
List<NtfsStream> nameStreams = new List<NtfsStream>(file.GetStreams(AttributeType.FileName, null));
|
|
foreach (var stream in nameStreams)
|
|
{
|
|
FileNameRecord fnr = stream.GetContent<FileNameRecord>();
|
|
if (fnr.ParentDirectory.Equals(givenEntry.Details.ParentDirectory)
|
|
&& fnr.FileNameNamespace == FileNameNamespace.Dos)
|
|
{
|
|
DirectoryEntry oldEntry = dir.GetEntryByName(fnr.FileName);
|
|
dir.RemoveEntry(oldEntry);
|
|
}
|
|
}
|
|
|
|
dir.AddEntry(file, shortName, FileNameNamespace.Dos);
|
|
|
|
parentEntry.UpdateFrom(dir);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the standard file information for a file.
|
|
/// </summary>
|
|
/// <param name="path">The full path to the file or directory to query.</param>
|
|
/// <returns>The standard file information.</returns>
|
|
public WindowsFileInformation GetFileStandardInformation(string path)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
DirectoryEntry dirEntry = GetDirectoryEntry(path);
|
|
if (dirEntry == null)
|
|
{
|
|
throw new FileNotFoundException("File not found", path);
|
|
}
|
|
|
|
File file = GetFile(dirEntry.Reference);
|
|
StandardInformation si = file.StandardInformation;
|
|
|
|
return new WindowsFileInformation
|
|
{
|
|
CreationTime = si.CreationTime,
|
|
LastAccessTime = si.LastAccessTime,
|
|
ChangeTime = si.MftChangedTime,
|
|
LastWriteTime = si.ModificationTime,
|
|
FileAttributes = StandardInformation.ConvertFlags(si.FileAttributes, file.IsDirectory)
|
|
};
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sets the standard file information for a file.
|
|
/// </summary>
|
|
/// <param name="path">The full path to the file or directory to query.</param>
|
|
/// <param name="info">The standard file information.</param>
|
|
public void SetFileStandardInformation(string path, WindowsFileInformation info)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
UpdateStandardInformation(
|
|
path,
|
|
delegate(StandardInformation si)
|
|
{
|
|
si.CreationTime = info.CreationTime;
|
|
si.LastAccessTime = info.LastAccessTime;
|
|
si.MftChangedTime = info.ChangeTime;
|
|
si.ModificationTime = info.LastWriteTime;
|
|
si.FileAttributes = StandardInformation.SetFileAttributes(info.FileAttributes, si.FileAttributes);
|
|
});
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the file id for a given path.
|
|
/// </summary>
|
|
/// <param name="path">The path to get the id of.</param>
|
|
/// <returns>The file id.</returns>
|
|
/// <remarks>
|
|
/// The returned file id includes the MFT index of the primary file record for the file.
|
|
/// The file id can be used to determine if two paths refer to the same actual file.
|
|
/// The MFT index is held in the lower 48 bits of the id.
|
|
/// </remarks>
|
|
public long GetFileId(string path)
|
|
{
|
|
using (new NtfsTransaction())
|
|
{
|
|
DirectoryEntry dirEntry = GetDirectoryEntry(path);
|
|
if (dirEntry == null)
|
|
{
|
|
throw new FileNotFoundException("File not found", path);
|
|
}
|
|
else
|
|
{
|
|
return (long)dirEntry.Reference.Value;
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the names of the alternate data streams for a file.
|
|
/// </summary>
|
|
/// <param name="path">The path to the file.</param>
|
|
/// <returns>
|
|
/// The list of alternate data streams (or empty, if none). To access the contents
|
|
/// of the alternate streams, use OpenFile(path + ":" + name, ...).
|
|
/// </returns>
|
|
public string[] GetAlternateDataStreams(string path)
|
|
{
|
|
DirectoryEntry dirEntry = GetDirectoryEntry(path);
|
|
if (dirEntry == null)
|
|
{
|
|
throw new FileNotFoundException("File not found", path);
|
|
}
|
|
|
|
File file = GetFile(dirEntry.Reference);
|
|
|
|
List<string> names = new List<string>();
|
|
foreach (var attr in file.AllStreams)
|
|
{
|
|
if (attr.AttributeType == AttributeType.Data && !string.IsNullOrEmpty(attr.Name))
|
|
{
|
|
names.Add(attr.Name);
|
|
}
|
|
}
|
|
|
|
return names.ToArray();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Reads the boot code of the file system into a byte array.
|
|
/// </summary>
|
|
/// <returns>The boot code, or <c>null</c> if not available.</returns>
|
|
public override byte[] ReadBootCode()
|
|
{
|
|
using (Stream s = OpenFile(@"\$Boot", FileMode.Open))
|
|
{
|
|
return Utilities.ReadFully(s, (int)s.Length);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Updates the BIOS Parameter Block (BPB) of the file system to reflect a new disk geometry.
|
|
/// </summary>
|
|
/// <param name="geometry">The disk's new BIOS geometry.</param>
|
|
/// <remarks>Having an accurate geometry in the BPB is essential for booting some Operating Systems (e.g. Windows XP).</remarks>
|
|
public void UpdateBiosGeometry(Geometry geometry)
|
|
{
|
|
_context.BiosParameterBlock.SectorsPerTrack = (ushort)geometry.SectorsPerTrack;
|
|
_context.BiosParameterBlock.NumHeads = (ushort)geometry.HeadsPerCylinder;
|
|
|
|
_context.RawStream.Position = 0;
|
|
byte[] bpbSector = Utilities.ReadFully(_context.RawStream, 512);
|
|
|
|
_context.BiosParameterBlock.ToBytes(bpbSector, 0);
|
|
|
|
_context.RawStream.Position = 0;
|
|
_context.RawStream.Write(bpbSector, 0, bpbSector.Length);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Writes a diagnostic dump of key NTFS structures.
|
|
/// </summary>
|
|
/// <param name="writer">The writer to receive the dump.</param>
|
|
/// <param name="linePrefix">The indent to apply to the start of each line of output.</param>
|
|
public void Dump(TextWriter writer, string linePrefix)
|
|
{
|
|
writer.WriteLine(linePrefix + "NTFS File System Dump");
|
|
writer.WriteLine(linePrefix + "=====================");
|
|
|
|
////_context.Mft.Dump(writer, linePrefix);
|
|
writer.WriteLine(linePrefix);
|
|
_context.BiosParameterBlock.Dump(writer, linePrefix);
|
|
|
|
if (_context.SecurityDescriptors != null)
|
|
{
|
|
writer.WriteLine(linePrefix);
|
|
_context.SecurityDescriptors.Dump(writer, linePrefix);
|
|
}
|
|
|
|
if (_context.ObjectIds != null)
|
|
{
|
|
writer.WriteLine(linePrefix);
|
|
_context.ObjectIds.Dump(writer, linePrefix);
|
|
}
|
|
|
|
if (_context.ReparsePoints != null)
|
|
{
|
|
writer.WriteLine(linePrefix);
|
|
_context.ReparsePoints.Dump(writer, linePrefix);
|
|
}
|
|
|
|
if (_context.Quotas != null)
|
|
{
|
|
writer.WriteLine(linePrefix);
|
|
_context.Quotas.Dump(writer, linePrefix);
|
|
}
|
|
|
|
writer.WriteLine(linePrefix);
|
|
GetDirectory(MasterFileTable.RootDirIndex).Dump(writer, linePrefix);
|
|
|
|
writer.WriteLine(linePrefix);
|
|
writer.WriteLine(linePrefix + "FULL FILE LISTING");
|
|
foreach (var record in _context.Mft.Records)
|
|
{
|
|
// Don't go through cache - these are short-lived, and this is (just!) diagnostics
|
|
File f = new File(_context, record);
|
|
f.Dump(writer, linePrefix);
|
|
|
|
foreach (var stream in f.AllStreams)
|
|
{
|
|
if (stream.AttributeType == AttributeType.IndexRoot)
|
|
{
|
|
try
|
|
{
|
|
writer.WriteLine(linePrefix + " INDEX (" + stream.Name + ")");
|
|
f.GetIndex(stream.Name).Dump(writer, linePrefix + " ");
|
|
}
|
|
catch (Exception e)
|
|
{
|
|
writer.WriteLine(linePrefix + "!Exception: " + e);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
writer.WriteLine(linePrefix);
|
|
writer.WriteLine(linePrefix + "DIRECTORY TREE");
|
|
writer.WriteLine(linePrefix + @"\ (5)");
|
|
DumpDirectory(GetDirectory(MasterFileTable.RootDirIndex), writer, linePrefix); // 5 = Root Dir
|
|
}
|
|
|
|
#region Internal File access methods (exposed via NtfsContext)
|
|
internal Directory GetDirectory(long index)
|
|
{
|
|
return (Directory)GetFile(index);
|
|
}
|
|
|
|
internal Directory GetDirectory(FileRecordReference fileReference)
|
|
{
|
|
return (Directory)GetFile(fileReference);
|
|
}
|
|
|
|
internal File GetFile(FileRecordReference fileReference)
|
|
{
|
|
FileRecord record = _context.Mft.GetRecord(fileReference);
|
|
if (record == null)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
// Don't create file objects for file record segments that are part of another
|
|
// logical file.
|
|
if (record.BaseFile.Value != 0)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
File file = _fileCache[fileReference.MftIndex];
|
|
|
|
if (file != null && file.MftReference.SequenceNumber != fileReference.SequenceNumber)
|
|
{
|
|
file = null;
|
|
}
|
|
|
|
if (file == null)
|
|
{
|
|
if ((record.Flags & FileRecordFlags.IsDirectory) != 0)
|
|
{
|
|
file = new Directory(_context, record);
|
|
}
|
|
else
|
|
{
|
|
file = new File(_context, record);
|
|
}
|
|
|
|
_fileCache[fileReference.MftIndex] = file;
|
|
}
|
|
|
|
return file;
|
|
}
|
|
|
|
internal File GetFile(long index)
|
|
{
|
|
FileRecord record = _context.Mft.GetRecord(index, false);
|
|
if (record == null)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
// Don't create file objects for file record segments that are part of another
|
|
// logical file.
|
|
if (record.BaseFile.Value != 0)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
File file = _fileCache[index];
|
|
|
|
if (file != null && file.MftReference.SequenceNumber != record.SequenceNumber)
|
|
{
|
|
file = null;
|
|
}
|
|
|
|
if (file == null)
|
|
{
|
|
if ((record.Flags & FileRecordFlags.IsDirectory) != 0)
|
|
{
|
|
file = new Directory(_context, record);
|
|
}
|
|
else
|
|
{
|
|
file = new File(_context, record);
|
|
}
|
|
|
|
_fileCache[index] = file;
|
|
}
|
|
|
|
return file;
|
|
}
|
|
|
|
internal File AllocateFile(FileRecordFlags flags)
|
|
{
|
|
File result = null;
|
|
if ((flags & FileRecordFlags.IsDirectory) != 0)
|
|
{
|
|
result = new Directory(_context, _context.Mft.AllocateRecord(flags, false));
|
|
}
|
|
else
|
|
{
|
|
result = new File(_context, _context.Mft.AllocateRecord(flags, false));
|
|
}
|
|
|
|
_fileCache[result.MftReference.MftIndex] = result;
|
|
return result;
|
|
}
|
|
|
|
internal void ForgetFile(File file)
|
|
{
|
|
_fileCache.Remove(file.IndexInMft);
|
|
}
|
|
|
|
#endregion
|
|
|
|
internal DirectoryEntry GetDirectoryEntry(string path)
|
|
{
|
|
return GetDirectoryEntry(GetDirectory(MasterFileTable.RootDirIndex), path);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Disposes of this instance.
|
|
/// </summary>
|
|
/// <param name="disposing">Whether called from Dispose or from a finalizer.</param>
|
|
protected override void Dispose(bool disposing)
|
|
{
|
|
if (disposing)
|
|
{
|
|
if (_context != null && _context.Mft != null)
|
|
{
|
|
_context.Mft.Dispose();
|
|
_context.Mft = null;
|
|
}
|
|
|
|
IDisposable disposableCompressor = _context.Options.Compressor as IDisposable;
|
|
if (disposableCompressor != null)
|
|
{
|
|
disposableCompressor.Dispose();
|
|
_context.Options.Compressor = null;
|
|
}
|
|
}
|
|
|
|
base.Dispose(disposing);
|
|
}
|
|
|
|
private static bool IsValidBPB(BiosParameterBlock bpb, long volumeSize)
|
|
{
|
|
if (bpb.SignatureByte != 0x80 || bpb.TotalSectors16 != 0 || bpb.TotalSectors32 != 0
|
|
|| bpb.TotalSectors64 == 0 || bpb.MftRecordSize == 0 || bpb.MftCluster == 0 || bpb.BytesPerSector == 0)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
long mftPos = bpb.MftCluster * bpb.SectorsPerCluster * bpb.BytesPerSector;
|
|
return mftPos < bpb.TotalSectors64 * bpb.BytesPerSector && mftPos < volumeSize;
|
|
}
|
|
|
|
private static void RemoveFileFromDirectory(Directory dir, File file, string name)
|
|
{
|
|
List<string> aliases = new List<string>();
|
|
|
|
DirectoryEntry dirEntry = dir.GetEntryByName(name);
|
|
if (dirEntry.Details.FileNameNamespace == FileNameNamespace.Dos
|
|
|| dirEntry.Details.FileNameNamespace == FileNameNamespace.Win32)
|
|
{
|
|
foreach (var fnStream in file.GetStreams(AttributeType.FileName, null))
|
|
{
|
|
var fnr = fnStream.GetContent<FileNameRecord>();
|
|
if ((fnr.FileNameNamespace == FileNameNamespace.Win32 || fnr.FileNameNamespace == FileNameNamespace.Dos)
|
|
&& fnr.ParentDirectory.Value == dir.MftReference.Value)
|
|
{
|
|
aliases.Add(fnr.FileName);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
aliases.Add(name);
|
|
}
|
|
|
|
foreach (var alias in aliases)
|
|
{
|
|
DirectoryEntry de = dir.GetEntryByName(alias);
|
|
dir.RemoveEntry(de);
|
|
}
|
|
}
|
|
|
|
private static void SplitPath(string path, out string plainPath, out string attributeName)
|
|
{
|
|
plainPath = path;
|
|
string fileName = Utilities.GetFileFromPath(path);
|
|
attributeName = null;
|
|
|
|
int streamSepPos = fileName.IndexOf(':');
|
|
if (streamSepPos >= 0)
|
|
{
|
|
attributeName = fileName.Substring(streamSepPos + 1);
|
|
plainPath = plainPath.Substring(0, path.Length - (fileName.Length - streamSepPos));
|
|
}
|
|
}
|
|
|
|
private static void UpdateStandardInformation(DirectoryEntry dirEntry, File file, StandardInformationModifier modifier)
|
|
{
|
|
// Update the standard information attribute - so it reflects the actual file state
|
|
NtfsStream stream = file.GetStream(AttributeType.StandardInformation, null);
|
|
StandardInformation si = stream.GetContent<StandardInformation>();
|
|
modifier(si);
|
|
stream.SetContent(si);
|
|
|
|
// Update the directory entry used to open the file, so it's accurate
|
|
dirEntry.UpdateFrom(file);
|
|
|
|
// Write attribute changes back to the Master File Table
|
|
file.UpdateRecordInMft();
|
|
}
|
|
|
|
private DirectoryEntry CreateNewFile(string path, NewFileOptions options)
|
|
{
|
|
DirectoryEntry result;
|
|
DirectoryEntry parentDirEntry = GetDirectoryEntry(Utilities.GetDirectoryFromPath(path));
|
|
Directory parentDir = GetDirectory(parentDirEntry.Reference);
|
|
|
|
FileAttributeFlags newFileAttrs = parentDir.StandardInformation.FileAttributes;
|
|
if (options != null && options.Compressed.HasValue)
|
|
{
|
|
if (options.Compressed.Value)
|
|
{
|
|
newFileAttrs |= FileAttributeFlags.Compressed;
|
|
}
|
|
else
|
|
{
|
|
newFileAttrs &= ~FileAttributeFlags.Compressed;
|
|
}
|
|
}
|
|
|
|
File file = File.CreateNew(_context, newFileAttrs);
|
|
try
|
|
{
|
|
result = AddFileToDirectory(file, parentDir, Utilities.GetFileFromPath(path), options);
|
|
|
|
RawSecurityDescriptor parentSd = DoGetSecurity(parentDir);
|
|
RawSecurityDescriptor newSd;
|
|
if (options != null && options.SecurityDescriptor != null)
|
|
{
|
|
newSd = options.SecurityDescriptor;
|
|
}
|
|
else
|
|
{
|
|
newSd = SecurityDescriptor.CalcNewObjectDescriptor(parentSd, false);
|
|
}
|
|
|
|
DoSetSecurity(file, newSd);
|
|
result.UpdateFrom(file);
|
|
|
|
parentDirEntry.UpdateFrom(parentDir);
|
|
}
|
|
finally
|
|
{
|
|
if (file.HardLinkCount == 0)
|
|
{
|
|
file.Delete();
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
private DirectoryEntry GetDirectoryEntry(Directory dir, string path)
|
|
{
|
|
string[] pathElements = path.Split(new char[] { '\\' }, StringSplitOptions.RemoveEmptyEntries);
|
|
return GetDirectoryEntry(dir, pathElements, 0);
|
|
}
|
|
|
|
private void DoSearch(List<string> results, string path, Regex regex, bool subFolders, bool dirs, bool files)
|
|
{
|
|
DirectoryEntry parentDirEntry = GetDirectoryEntry(path);
|
|
if (parentDirEntry == null)
|
|
{
|
|
throw new DirectoryNotFoundException(string.Format(CultureInfo.InvariantCulture, "The directory '{0}' was not found", path));
|
|
}
|
|
|
|
Directory parentDir = GetDirectory(parentDirEntry.Reference);
|
|
if (parentDir == null)
|
|
{
|
|
throw new DirectoryNotFoundException(string.Format(CultureInfo.InvariantCulture, "The directory '{0}' was not found", path));
|
|
}
|
|
|
|
foreach (DirectoryEntry de in parentDir.GetAllEntries(true))
|
|
{
|
|
bool isDir = (de.Details.FileAttributes & FileAttributes.Directory) != 0;
|
|
|
|
if ((isDir && dirs) || (!isDir && files))
|
|
{
|
|
if (regex.IsMatch(de.SearchName))
|
|
{
|
|
results.Add(Utilities.CombinePaths(path, de.Details.FileName));
|
|
}
|
|
}
|
|
|
|
if (subFolders && isDir)
|
|
{
|
|
DoSearch(results, Utilities.CombinePaths(path, de.Details.FileName), regex, subFolders, dirs, files);
|
|
}
|
|
}
|
|
}
|
|
|
|
private DirectoryEntry GetDirectoryEntry(Directory dir, string[] pathEntries, int pathOffset)
|
|
{
|
|
DirectoryEntry entry;
|
|
|
|
if (pathEntries.Length == 0)
|
|
{
|
|
return dir.DirectoryEntry;
|
|
}
|
|
else
|
|
{
|
|
entry = dir.GetEntryByName(pathEntries[pathOffset]);
|
|
if (entry != null)
|
|
{
|
|
if (pathOffset == pathEntries.Length - 1)
|
|
{
|
|
return entry;
|
|
}
|
|
else if ((entry.Details.FileAttributes & FileAttributes.Directory) != 0)
|
|
{
|
|
return GetDirectoryEntry(GetDirectory(entry.Reference), pathEntries, pathOffset + 1);
|
|
}
|
|
else
|
|
{
|
|
throw new IOException(string.Format(CultureInfo.InvariantCulture, "{0} is a file, not a directory", pathEntries[pathOffset]));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
return null;
|
|
}
|
|
}
|
|
}
|
|
|
|
private DirectoryEntry AddFileToDirectory(File file, Directory dir, string name, NewFileOptions options)
|
|
{
|
|
DirectoryEntry entry;
|
|
|
|
bool createShortNames;
|
|
if (options != null && options.CreateShortNames.HasValue)
|
|
{
|
|
createShortNames = options.CreateShortNames.Value;
|
|
}
|
|
else
|
|
{
|
|
createShortNames = CreateShortNames;
|
|
}
|
|
|
|
if (createShortNames)
|
|
{
|
|
if (Utilities.Is8Dot3(name.ToUpperInvariant()))
|
|
{
|
|
entry = dir.AddEntry(file, name, FileNameNamespace.Win32AndDos);
|
|
}
|
|
else
|
|
{
|
|
entry = dir.AddEntry(file, name, FileNameNamespace.Win32);
|
|
dir.AddEntry(file, dir.CreateShortName(name), FileNameNamespace.Dos);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
entry = dir.AddEntry(file, name, FileNameNamespace.Posix);
|
|
}
|
|
|
|
return entry;
|
|
}
|
|
|
|
private void RemoveReparsePoint(File file)
|
|
{
|
|
NtfsStream stream = file.GetStream(AttributeType.ReparsePoint, null);
|
|
if (stream != null)
|
|
{
|
|
ReparsePointRecord rp = new ReparsePointRecord();
|
|
|
|
using (Stream contentStream = stream.Open(FileAccess.Read))
|
|
{
|
|
byte[] buffer = Utilities.ReadFully(contentStream, (int)contentStream.Length);
|
|
rp.ReadFrom(buffer, 0);
|
|
}
|
|
|
|
file.RemoveStream(stream);
|
|
|
|
// Update the standard information attribute - so it reflects the actual file state
|
|
NtfsStream stdInfoStream = file.GetStream(AttributeType.StandardInformation, null);
|
|
StandardInformation si = stdInfoStream.GetContent<StandardInformation>();
|
|
si.FileAttributes = si.FileAttributes & ~FileAttributeFlags.ReparsePoint;
|
|
stdInfoStream.SetContent(si);
|
|
|
|
// Remove the reparse point from the index
|
|
_context.ReparsePoints.Remove(rp.Tag, file.MftReference);
|
|
}
|
|
}
|
|
|
|
private RawSecurityDescriptor DoGetSecurity(File file)
|
|
{
|
|
NtfsStream legacyStream = file.GetStream(AttributeType.SecurityDescriptor, null);
|
|
if (legacyStream != null)
|
|
{
|
|
return legacyStream.GetContent<SecurityDescriptor>().Descriptor;
|
|
}
|
|
|
|
StandardInformation si = file.StandardInformation;
|
|
return _context.SecurityDescriptors.GetDescriptorById(si.SecurityId);
|
|
}
|
|
|
|
private void DoSetSecurity(File file, RawSecurityDescriptor securityDescriptor)
|
|
{
|
|
NtfsStream legacyStream = file.GetStream(AttributeType.SecurityDescriptor, null);
|
|
if (legacyStream != null)
|
|
{
|
|
SecurityDescriptor sd = new SecurityDescriptor();
|
|
sd.Descriptor = securityDescriptor;
|
|
legacyStream.SetContent(sd);
|
|
}
|
|
else
|
|
{
|
|
uint id = _context.SecurityDescriptors.AddDescriptor(securityDescriptor);
|
|
|
|
// Update the standard information attribute - so it reflects the actual file state
|
|
NtfsStream stream = file.GetStream(AttributeType.StandardInformation, null);
|
|
StandardInformation si = stream.GetContent<StandardInformation>();
|
|
si.SecurityId = id;
|
|
stream.SetContent(si);
|
|
|
|
// Write attribute changes back to the Master File Table
|
|
file.UpdateRecordInMft();
|
|
}
|
|
}
|
|
|
|
private void DumpDirectory(Directory dir, TextWriter writer, string indent)
|
|
{
|
|
foreach (DirectoryEntry dirEntry in dir.GetAllEntries(true))
|
|
{
|
|
File file = GetFile(dirEntry.Reference);
|
|
Directory asDir = file as Directory;
|
|
writer.WriteLine(indent + "+-" + file.ToString() + " (" + file.IndexInMft + ")");
|
|
|
|
// Recurse - but avoid infinite recursion via the root dir...
|
|
if (asDir != null && file.IndexInMft != 5)
|
|
{
|
|
DumpDirectory(asDir, writer, indent + "| ");
|
|
}
|
|
}
|
|
}
|
|
|
|
private void UpdateStandardInformation(string path, StandardInformationModifier modifier)
|
|
{
|
|
DirectoryEntry dirEntry = GetDirectoryEntry(path);
|
|
if (dirEntry == null)
|
|
{
|
|
throw new FileNotFoundException("File not found", path);
|
|
}
|
|
else
|
|
{
|
|
File file = GetFile(dirEntry.Reference);
|
|
|
|
UpdateStandardInformation(dirEntry, file, modifier);
|
|
}
|
|
}
|
|
|
|
private string ParsePath(string path, out string attributeName, out AttributeType attributeType)
|
|
{
|
|
string fileName = Utilities.GetFileFromPath(path);
|
|
attributeName = null;
|
|
attributeType = AttributeType.Data;
|
|
|
|
string[] fileNameElements = fileName.Split(new char[] { ':' }, 3);
|
|
fileName = fileNameElements[0];
|
|
|
|
if (fileNameElements.Length > 1)
|
|
{
|
|
attributeName = fileNameElements[1];
|
|
if (string.IsNullOrEmpty(attributeName))
|
|
{
|
|
attributeName = null;
|
|
}
|
|
}
|
|
|
|
if (fileNameElements.Length > 2)
|
|
{
|
|
string typeName = fileNameElements[2];
|
|
AttributeDefinitionRecord typeDefn = _context.AttributeDefinitions.Lookup(typeName);
|
|
if (typeDefn == null)
|
|
{
|
|
throw new FileNotFoundException(string.Format(CultureInfo.InvariantCulture, "No such attribute type '{0}'", typeName), path);
|
|
}
|
|
|
|
attributeType = typeDefn.Type;
|
|
}
|
|
|
|
try
|
|
{
|
|
string dirName = Utilities.GetDirectoryFromPath(path);
|
|
return Utilities.CombinePaths(dirName, fileName);
|
|
}
|
|
catch (ArgumentException)
|
|
{
|
|
throw new IOException("Invalid path: " + path);
|
|
}
|
|
}
|
|
}
|
|
}
|