public virtual FileRecord CreateFile(MftSegmentReference parentDirectory, string fileName, bool isDirectory)
{
// Worst case scenrario: the MFT might be full and the parent directory index requires multiple splits
if (NumberOfFreeClusters < 24)
{
throw new DiskFullException();
}
FileRecord parentDirectoryRecord = GetFileRecord(parentDirectory);
IndexData parentDirectoryIndex = new IndexData(this, parentDirectoryRecord, AttributeType.FileName);
if (parentDirectoryIndex.ContainsFileName(fileName))
{
throw new AlreadyExistsException();
}
List <FileNameRecord> fileNameRecords = IndexHelper.GenerateFileNameRecords(parentDirectory, fileName, isDirectory, m_generateDosNames, parentDirectoryIndex);
FileRecord fileRecord = m_mft.CreateFile(fileNameRecords);
// Update parent directory index
foreach (FileNameRecord fileNameRecord in fileNameRecords)
{
parentDirectoryIndex.AddEntry(fileRecord.BaseSegmentReference, fileNameRecord.GetBytes());
}
return(fileRecord);
}
public IndexData(NTFSVolume volume, FileRecord fileRecord, AttributeType indexedAttributeType)
{
m_volume = volume;
m_fileRecord = fileRecord;
m_indexedAttributeType = indexedAttributeType;
m_indexName = IndexHelper.GetIndexName(indexedAttributeType);
m_rootRecord = (IndexRootRecord)m_fileRecord.GetAttributeRecord(AttributeType.IndexRoot, m_indexName);
// I have observed the NTFS v5.1 driver keeping the IndexAllocation and associated Bitmap attributes after deleting files from the directory even though m_rootRecord.IsParentNode is set to false.
m_indexAllocationRecord = (IndexAllocationRecord)m_fileRecord.GetAttributeRecord(AttributeType.IndexAllocation, m_indexName);
m_bitmapRecord = m_fileRecord.GetAttributeRecord(AttributeType.Bitmap, m_indexName);
if (m_indexAllocationRecord != null && m_bitmapRecord != null)
{
m_indexAllocationData = new NonResidentAttributeData(m_volume, m_fileRecord, m_indexAllocationRecord);
long numberOfUsableBits = (long)(m_indexAllocationRecord.DataLength / m_rootRecord.BytesPerIndexRecord);
m_bitmapData = new BitmapData(m_volume, m_fileRecord, m_bitmapRecord, numberOfUsableBits);
}
else if (m_rootRecord.IsParentNode && m_indexAllocationRecord == null)
{
throw new InvalidDataException("Missing Index Allocation Record");
}
else if (m_rootRecord.IsParentNode && m_bitmapRecord == null)
{
throw new InvalidDataException("Missing Index Bitmap Record");
}
}
public virtual FileRecord CreateFile(MftSegmentReference parentDirectory, string fileName, bool isDirectory)
{
// Worst case scenrario: the MFT might be full and the parent directory index requires multiple splits
if (NumberOfFreeClusters < 24)
{
throw new DiskFullException();
}
FileRecord parentDirectoryRecord = GetFileRecord(parentDirectory);
m_mftLock.AcquireWriterLock(Timeout.Infinite);
IndexData parentDirectoryIndex = new IndexData(this, parentDirectoryRecord, AttributeType.FileName);
if (parentDirectoryIndex.ContainsFileName(fileName))
{
m_mftLock.ReleaseWriterLock();
throw new AlreadyExistsException();
}
List <FileNameRecord> fileNameRecords = IndexHelper.GenerateFileNameRecords(parentDirectory, fileName, isDirectory, m_generateDosNames, parentDirectoryIndex);
uint transactionID = m_logClient.AllocateTransactionID();
FileRecord fileRecord = m_mft.CreateFile(fileNameRecords, transactionID);
// Update parent directory index
foreach (FileNameRecord fileNameRecord in fileNameRecords)
{
parentDirectoryIndex.AddEntry(fileRecord.BaseSegmentReference, fileNameRecord.GetBytes());
}
m_logClient.WriteForgetTransactionRecord(transactionID);
m_logClient.WriteRestartRecord(this.MajorVersion, true);
m_mftLock.ReleaseWriterLock();
return(fileRecord);
}
public virtual void MoveFile(FileRecord fileRecord, MftSegmentReference newParentDirectory, string newFileName)
{
// Worst case scenrario: the new parent directory index requires multiple splits
if (NumberOfFreeClusters < 4)
{
throw new DiskFullException();
}
FileRecord oldParentDirectoryRecord = GetFileRecord(fileRecord.ParentDirectoryReference);
IndexData oldParentDirectoryIndex = new IndexData(this, oldParentDirectoryRecord, AttributeType.FileName);
IndexData newParentDirectoryIndex;
if (fileRecord.ParentDirectoryReference == newParentDirectory)
{
newParentDirectoryIndex = oldParentDirectoryIndex;
}
else
{
FileRecord newParentDirectoryRecord = GetFileRecord(newParentDirectory);
newParentDirectoryIndex = new IndexData(this, newParentDirectoryRecord, AttributeType.FileName);
if (newParentDirectoryIndex.ContainsFileName(newFileName))
{
throw new AlreadyExistsException();
}
}
List <FileNameRecord> fileNameRecords = fileRecord.FileNameRecords;
foreach (FileNameRecord fileNameRecord in fileNameRecords)
{
oldParentDirectoryIndex.RemoveEntry(fileNameRecord.GetBytes());
}
DateTime creationTime = fileRecord.FileNameRecord.CreationTime;
DateTime modificationTime = fileRecord.FileNameRecord.ModificationTime;
DateTime mftModificationTime = fileRecord.FileNameRecord.MftModificationTime;
DateTime lastAccessTime = fileRecord.FileNameRecord.LastAccessTime;
ulong allocatedLength = fileRecord.FileNameRecord.AllocatedLength;
ulong fileSize = fileRecord.FileNameRecord.FileSize;
FileAttributes fileAttributes = fileRecord.FileNameRecord.FileAttributes;
ushort packedEASize = fileRecord.FileNameRecord.PackedEASize;
fileNameRecords = IndexHelper.GenerateFileNameRecords(newParentDirectory, newFileName, fileRecord.IsDirectory, m_generateDosNames, newParentDirectoryIndex, creationTime, modificationTime, mftModificationTime, lastAccessTime, allocatedLength, fileSize, fileAttributes, packedEASize);
fileRecord.RemoveAttributeRecords(AttributeType.FileName, String.Empty);
foreach (FileNameRecord fileNameRecord in fileNameRecords)
{
FileNameAttributeRecord fileNameAttribute = (FileNameAttributeRecord)fileRecord.CreateAttributeRecord(AttributeType.FileName, String.Empty);
fileNameAttribute.IsIndexed = true;
fileNameAttribute.Record = fileNameRecord;
}
UpdateFileRecord(fileRecord);
foreach (FileNameRecord fileNameRecord in fileNameRecords)
{
newParentDirectoryIndex.AddEntry(fileRecord.BaseSegmentReference, fileNameRecord.GetBytes());
}
}
public FileRecord CreateFile(List <FileNameRecord> fileNameRecords, uint transactionID)
{
if (fileNameRecords.Count == 0)
{
throw new ArgumentException();
}
bool isDirectory = fileNameRecords[0].IsDirectory;
MftSegmentReference segmentReference = AllocateFileRecordSegment(transactionID);
FileRecordSegment fileRecordSegment = new FileRecordSegment(segmentReference.SegmentNumber, segmentReference.SequenceNumber);
// UpdateFileRecord() expects the base segment to be present on disk
byte[] redoData = fileRecordSegment.GetBytes(m_volume.BytesPerFileRecordSegment, m_volume.MinorVersion, false);
ulong streamOffset = (ulong)(fileRecordSegment.SegmentNumber * m_volume.BytesPerFileRecordSegment);
m_volume.LogClient.WriteLogRecord(m_mftRecord.BaseSegmentReference, m_mftRecord.DataRecord, streamOffset, NTFSLogOperation.InitializeFileRecordSegment, redoData, NTFSLogOperation.DeallocateFileRecordSegment, new byte[0], transactionID);
UpdateFileRecordSegment(fileRecordSegment);
fileRecordSegment.ReferenceCount = (ushort)fileNameRecords.Count; // Each FileNameRecord is about to be indexed
fileRecordSegment.IsInUse = true;
fileRecordSegment.IsDirectory = isDirectory;
FileRecord fileRecord = new FileRecord(fileRecordSegment);
StandardInformationRecord standardInformation = (StandardInformationRecord)fileRecord.CreateAttributeRecord(AttributeType.StandardInformation, String.Empty);
standardInformation.CreationTime = fileNameRecords[0].CreationTime;
standardInformation.ModificationTime = fileNameRecords[0].ModificationTime;
standardInformation.MftModificationTime = fileNameRecords[0].MftModificationTime;
standardInformation.LastAccessTime = fileNameRecords[0].LastAccessTime;
standardInformation.FileAttributes = 0;
foreach (FileNameRecord fileNameRecord in fileNameRecords)
{
FileNameAttributeRecord fileNameAttribute = (FileNameAttributeRecord)fileRecord.CreateAttributeRecord(AttributeType.FileName, String.Empty);
fileNameAttribute.IsIndexed = true;
fileNameAttribute.Record = fileNameRecord;
}
if (isDirectory)
{
string indexName = IndexHelper.GetIndexName(AttributeType.FileName);
IndexRootRecord indexRoot = (IndexRootRecord)fileRecord.CreateAttributeRecord(AttributeType.IndexRoot, indexName);
IndexHelper.InitializeIndexRoot(indexRoot, AttributeType.FileName, m_volume.BytesPerIndexRecord, m_volume.BytesPerCluster);
}
else
{
fileRecord.CreateAttributeRecord(AttributeType.Data, String.Empty);
}
UpdateFileRecord(fileRecord, transactionID);
return(fileRecord);
}
public FileRecord CreateFile(List <FileNameRecord> fileNameRecords)
{
if (fileNameRecords.Count == 0)
{
throw new ArgumentException();
}
bool isDirectory = fileNameRecords[0].IsDirectory;
MftSegmentReference segmentReference = AllocateFileRecordSegment();
FileRecordSegment fileRecordSegment = new FileRecordSegment(segmentReference.SegmentNumber, segmentReference.SequenceNumber);
fileRecordSegment.ReferenceCount = (ushort)fileNameRecords.Count; // Each FileNameRecord is about to be indexed
fileRecordSegment.IsInUse = true;
fileRecordSegment.IsDirectory = isDirectory;
FileRecord fileRecord = new FileRecord(fileRecordSegment);
StandardInformationRecord standardInformation = (StandardInformationRecord)fileRecord.CreateAttributeRecord(AttributeType.StandardInformation, String.Empty);
standardInformation.CreationTime = fileNameRecords[0].CreationTime;
standardInformation.ModificationTime = fileNameRecords[0].ModificationTime;
standardInformation.MftModificationTime = fileNameRecords[0].MftModificationTime;
standardInformation.LastAccessTime = fileNameRecords[0].LastAccessTime;
standardInformation.FileAttributes = 0;
foreach (FileNameRecord fileNameRecord in fileNameRecords)
{
FileNameAttributeRecord fileNameAttribute = (FileNameAttributeRecord)fileRecord.CreateAttributeRecord(AttributeType.FileName, String.Empty);
fileNameAttribute.IsIndexed = true;
fileNameAttribute.Record = fileNameRecord;
}
if (isDirectory)
{
string indexName = IndexHelper.GetIndexName(AttributeType.FileName);
IndexRootRecord indexRoot = (IndexRootRecord)fileRecord.CreateAttributeRecord(AttributeType.IndexRoot, indexName);
IndexHelper.InitializeIndexRoot(indexRoot, AttributeType.FileName, m_volume.BytesPerIndexRecord, m_volume.BytesPerCluster);
}
else
{
fileRecord.CreateAttributeRecord(AttributeType.Data, String.Empty);
}
UpdateFileRecord(fileRecord);
return(fileRecord);
}
public virtual FileRecord CreateFile(MftSegmentReference parentDirectory, string fileName, bool isDirectory)
{
if (fileName.Length > FileNameRecord.MaxFileNameLength)
{
throw new InvalidNameException();
}
// Worst case scenrario: the MFT might be full and the parent directory index requires multiple splits.
// We assume IndexData.ExtendGranularity is bigger than or equal to the number of splits.
if (NumberOfFreeClusters < m_mft.NumberOfClustersRequiredToExtend + NumberOfClustersRequiredToExtendIndex)
{
throw new DiskFullException();
}
lock (m_mftLock)
{
FileRecord parentDirectoryRecord = GetFileRecord(parentDirectory);
IndexData parentDirectoryIndex = new IndexData(this, parentDirectoryRecord, AttributeType.FileName);
if (parentDirectoryIndex.ContainsFileName(fileName))
{
throw new AlreadyExistsException();
}
List <FileNameRecord> fileNameRecords = IndexHelper.GenerateFileNameRecords(parentDirectory, fileName, isDirectory, GenerateDosNames, parentDirectoryIndex);
uint transactionID = m_logClient.AllocateTransactionID();
FileRecord fileRecord = m_mft.CreateFile(fileNameRecords, transactionID);
// Update parent directory index
foreach (FileNameRecord fileNameRecord in fileNameRecords)
{
parentDirectoryIndex.AddEntry(fileRecord.BaseSegmentReference, fileNameRecord.GetBytes());
}
m_logClient.WriteForgetTransactionRecord(transactionID);
m_logClient.WriteRestartRecord(true);
return(fileRecord);
}
}
public static NTFSVolume Format(Volume volume, byte majorNTFSVersion, byte minorNTFSVersion, int bytesPerCluster, string volumeLabel)
{
if (volumeLabel.Length > VolumeNameRecord.MaxVolumeNameLength)
{
throw new InvalidNameException();
}
if (bytesPerCluster % volume.BytesPerSector > 0)
{
throw new ArgumentException("bytesPerCluster must be a multiple of volume.BytesPerSector");
}
if (majorNTFSVersion != 3 || (minorNTFSVersion != 0 && minorNTFSVersion != 1))
{
throw new NotSupportedException();
}
long volumeClusterCount = (volume.Size - NTFSBootRecord.Length) / bytesPerCluster;
// We wish to make WriteVolumeBitmap() as simple as possible so we use a multiple of ExtendGranularity to avoid having to set bits at the end of the bitmap
volumeClusterCount = (long)Math.Floor((double)volumeClusterCount / (VolumeBitmap.ExtendGranularity * 8)) * (VolumeBitmap.ExtendGranularity * 8);
int sectorsPerCluster = bytesPerCluster / volume.BytesPerSector;
int bytesPerFileRecordSegment = 1024; // Supported values are 1024 or 4096 (when formatted with /L)
int bytesPerIndexRecord = 4096; // Legal values are 1024, 2048 or 4096. NTFS v5.1 driver will always use 4096.
int bootSegmentFileSize = 8192;
int bootSegmentAllocatedLength = (int)Math.Ceiling((double)bootSegmentFileSize / bytesPerCluster) * bytesPerCluster;
FileNameRecord bootFileNameRecord = new FileNameRecord(MasterFileTable.RootDirSegmentReference, "$Boot", false, DateTime.Now);
bootFileNameRecord.AllocatedLength = (ulong)bootSegmentAllocatedLength;
bootFileNameRecord.FileSize = (ulong)bootSegmentFileSize;
bootFileNameRecord.FileAttributes = FileAttributes.Hidden | FileAttributes.System;
FileRecordSegment bootSegment = CreateBaseRecordSegment(MasterFileTable.BootSegmentNumber, (ushort)MasterFileTable.BootSegmentNumber, bootFileNameRecord);
bootSegment.ReferenceCount = 1;
NonResidentAttributeRecord bootDataRecord = (NonResidentAttributeRecord)bootSegment.CreateAttributeRecord(AttributeType.Data, String.Empty, false);
bootDataRecord.AllocatedLength = (ulong)bootSegmentAllocatedLength;
bootDataRecord.FileSize = (ulong)bootSegmentFileSize;
bootDataRecord.ValidDataLength = (ulong)bootSegmentFileSize;
int bootDataClusterCount = (int)Math.Ceiling((double)8192 / bytesPerCluster);
long bootDataStartLCN = 0;
bootDataRecord.DataRunSequence.Add(new DataRun(bootDataClusterCount, bootDataStartLCN));
bootDataRecord.HighestVCN = bootDataClusterCount - 1;
long volumeBitmapFileSize = (long)Math.Ceiling((double)volumeClusterCount / (VolumeBitmap.ExtendGranularity * 8)) * VolumeBitmap.ExtendGranularity;
long numberOfVolumeBitmapClusters = (long)Math.Ceiling((double)volumeBitmapFileSize / bytesPerCluster);
long volumeBitmapAllocatedLength = numberOfVolumeBitmapClusters * bytesPerCluster;
FileNameRecord volumeBitmapFileNameRecord = new FileNameRecord(MasterFileTable.RootDirSegmentReference, "$Bitmap", false, DateTime.Now);
volumeBitmapFileNameRecord.AllocatedLength = (ulong)volumeBitmapAllocatedLength;
volumeBitmapFileNameRecord.FileSize = (ulong)volumeBitmapFileSize;
volumeBitmapFileNameRecord.FileAttributes = FileAttributes.Hidden | FileAttributes.System;
FileRecordSegment volumeBitmapSegment = CreateBaseRecordSegment(MasterFileTable.BitmapSegmentNumber, (ushort)MasterFileTable.BitmapSegmentNumber, volumeBitmapFileNameRecord);
volumeBitmapSegment.ReferenceCount = 1;
NonResidentAttributeRecord volumeBitmapDataRecord = (NonResidentAttributeRecord)volumeBitmapSegment.CreateAttributeRecord(AttributeType.Data, String.Empty, false);
long volumeBitmapStartLCN = bootDataClusterCount;
volumeBitmapDataRecord.AllocatedLength = (ulong)volumeBitmapAllocatedLength;
volumeBitmapDataRecord.FileSize = (ulong)volumeBitmapFileSize;
volumeBitmapDataRecord.ValidDataLength = (ulong)volumeBitmapFileSize;
volumeBitmapDataRecord.DataRunSequence.Add(new DataRun(numberOfVolumeBitmapClusters, volumeBitmapStartLCN));
volumeBitmapDataRecord.HighestVCN = numberOfVolumeBitmapClusters - 1;
int numberOfMftRecords = 64;
int mftDataLength = numberOfMftRecords * bytesPerFileRecordSegment;
FileNameRecord mftFileNameRecord = new FileNameRecord(MasterFileTable.RootDirSegmentReference, "$MFT", false, DateTime.Now);
mftFileNameRecord.AllocatedLength = (ulong)mftDataLength;
mftFileNameRecord.FileSize = (ulong)mftDataLength;
mftFileNameRecord.FileAttributes = FileAttributes.Hidden | FileAttributes.System;
FileRecordSegment mftSegment = CreateBaseRecordSegment(MasterFileTable.MasterFileTableSegmentNumber, 1, mftFileNameRecord);
mftSegment.ReferenceCount = 1;
NonResidentAttributeRecord mftDataRecord = (NonResidentAttributeRecord)mftSegment.CreateAttributeRecord(AttributeType.Data, String.Empty, false);
mftDataRecord.AllocatedLength = (ulong)mftDataLength;
mftDataRecord.FileSize = (ulong)mftDataLength;
mftDataRecord.ValidDataLength = (ulong)mftDataLength;
int mftDataClusterCount = (int)Math.Ceiling((double)mftDataLength / bytesPerCluster);
long mftDataStartLCN = volumeBitmapStartLCN + numberOfVolumeBitmapClusters;
mftDataRecord.DataRunSequence.Add(new DataRun(mftDataClusterCount, mftDataStartLCN));
mftDataRecord.HighestVCN = mftDataClusterCount - 1;
NonResidentAttributeRecord mftBitmapRecord = (NonResidentAttributeRecord)mftSegment.CreateAttributeRecord(AttributeType.Bitmap, String.Empty, false);
int mftBitmapLength = (int)Math.Ceiling((double)numberOfMftRecords / (BitmapData.ExtendGranularity * 8)) * BitmapData.ExtendGranularity;
int mftBitmapClusterCount = (int)Math.Ceiling((double)mftBitmapLength / bytesPerCluster);
mftBitmapRecord.AllocatedLength = (ulong)(mftBitmapClusterCount * bytesPerCluster);
mftBitmapRecord.FileSize = (ulong)mftBitmapLength;
mftBitmapRecord.ValidDataLength = (ulong)mftBitmapLength;
long mftBitmapStartLCN = mftDataStartLCN + mftDataClusterCount;
mftBitmapRecord.DataRunSequence.Add(new DataRun(mftBitmapClusterCount, mftBitmapStartLCN));
mftBitmapRecord.HighestVCN = 0;
int bytesPerLogPage = 4096;
int logFileDataLength = 512 * bytesPerLogPage;
FileNameRecord logFileNameRecord = new FileNameRecord(MasterFileTable.RootDirSegmentReference, "$LogFile", false, DateTime.Now);
logFileNameRecord.AllocatedLength = (ulong)logFileDataLength;
logFileNameRecord.FileSize = (ulong)logFileDataLength;
logFileNameRecord.FileAttributes = FileAttributes.Hidden | FileAttributes.System;
FileRecordSegment logFileSegment = CreateBaseRecordSegment(MasterFileTable.LogFileSegmentNumber, (ushort)MasterFileTable.LogFileSegmentNumber, logFileNameRecord);
logFileSegment.ReferenceCount = 1;
NonResidentAttributeRecord logFileDataRecord = (NonResidentAttributeRecord)logFileSegment.CreateAttributeRecord(AttributeType.Data, String.Empty, false);
logFileDataRecord.AllocatedLength = (ulong)logFileDataLength;
logFileDataRecord.FileSize = (ulong)logFileDataLength;
logFileDataRecord.ValidDataLength = (ulong)logFileDataLength;
int logFileClusterCount = (int)Math.Ceiling((double)logFileDataLength / bytesPerCluster);
long logFileStartLCN = mftBitmapStartLCN + mftBitmapClusterCount;
logFileDataRecord.DataRunSequence.Add(new DataRun(logFileClusterCount, logFileStartLCN));
logFileDataRecord.HighestVCN = logFileClusterCount - 1;
FileNameRecord volumeFileNameRecord = new FileNameRecord(MasterFileTable.RootDirSegmentReference, "$Volume", false, DateTime.Now);
volumeFileNameRecord.FileAttributes = FileAttributes.Hidden | FileAttributes.System;
FileRecordSegment volumeSegment = CreateBaseRecordSegment(MasterFileTable.VolumeSegmentNumber, (ushort)MasterFileTable.VolumeSegmentNumber, volumeFileNameRecord);
volumeSegment.ReferenceCount = 1;
VolumeNameRecord volumeName = (VolumeNameRecord)volumeSegment.CreateAttributeRecord(AttributeType.VolumeName, String.Empty);
volumeName.VolumeName = volumeLabel;
VolumeInformationRecord volumeInformation = (VolumeInformationRecord)volumeSegment.CreateAttributeRecord(AttributeType.VolumeInformation, String.Empty);
volumeInformation.MajorVersion = majorNTFSVersion;
volumeInformation.MinorVersion = minorNTFSVersion;
volumeSegment.CreateAttributeRecord(AttributeType.Data, String.Empty);
long logFileDataStartSector = logFileStartLCN * sectorsPerCluster;
WriteLogFile(volume, logFileDataStartSector, logFileDataLength, bytesPerLogPage);
long attributeDefinitionStartLCN = logFileStartLCN + logFileClusterCount;
long attributeDefinitionStartSector = attributeDefinitionStartLCN * sectorsPerCluster;
int attributeDefinitionLength = WriteAttributeDefinition(volume, attributeDefinitionStartSector, bytesPerCluster);
int attributeDefinitionClusterCount = (int)Math.Ceiling((double)attributeDefinitionLength / bytesPerCluster);
int attributeDefinitionAllocatedLength = attributeDefinitionClusterCount * bytesPerCluster;
FileNameRecord attributeDefinitionFileNameRecord = new FileNameRecord(MasterFileTable.RootDirSegmentReference, "$AttrDef", false, DateTime.Now);
attributeDefinitionFileNameRecord.AllocatedLength = (ulong)attributeDefinitionAllocatedLength;
attributeDefinitionFileNameRecord.FileSize = (ulong)attributeDefinitionLength;
attributeDefinitionFileNameRecord.FileAttributes = FileAttributes.Hidden | FileAttributes.System;
FileRecordSegment attributeDefinitionSegment = CreateBaseRecordSegment(MasterFileTable.AttrDefSegmentNumber, (ushort)MasterFileTable.AttrDefSegmentNumber, attributeDefinitionFileNameRecord);
attributeDefinitionSegment.ReferenceCount = 1;
NonResidentAttributeRecord attributeDefinitionDataRecord = (NonResidentAttributeRecord)attributeDefinitionSegment.CreateAttributeRecord(AttributeType.Data, String.Empty, false);
attributeDefinitionDataRecord.AllocatedLength = (ulong)attributeDefinitionAllocatedLength;
attributeDefinitionDataRecord.FileSize = (ulong)attributeDefinitionLength;
attributeDefinitionDataRecord.ValidDataLength = (ulong)attributeDefinitionLength;
attributeDefinitionDataRecord.DataRunSequence.Add(new DataRun(attributeDefinitionClusterCount, attributeDefinitionStartLCN));
attributeDefinitionDataRecord.HighestVCN = attributeDefinitionClusterCount - 1;
FileNameRecord badClustersFileNameRecord = new FileNameRecord(MasterFileTable.RootDirSegmentReference, "$BadClus", false, DateTime.Now);
badClustersFileNameRecord.FileAttributes = FileAttributes.Hidden | FileAttributes.System;
FileRecordSegment badClustersSegment = CreateBaseRecordSegment(MasterFileTable.BadClusSegmentNumber, (ushort)MasterFileTable.BadClusSegmentNumber, badClustersFileNameRecord);
badClustersSegment.ReferenceCount = 1;
badClustersSegment.CreateAttributeRecord(AttributeType.Data, String.Empty);
NonResidentAttributeRecord badClustersData = (NonResidentAttributeRecord)badClustersSegment.CreateAttributeRecord(AttributeType.Data, "$Bad", false);
DataRun volumeDataRun = new DataRun();
volumeDataRun.RunLength = volumeClusterCount;
volumeDataRun.IsSparse = true;
badClustersData.DataRunSequence.Add(volumeDataRun);
badClustersData.HighestVCN = volumeClusterCount - 1;
badClustersData.AllocatedLength = (ulong)(volumeClusterCount * bytesPerCluster);
badClustersData.FileSize = 0;
badClustersData.ValidDataLength = 0;
FileNameRecord secureFileNameRecord = new FileNameRecord(MasterFileTable.RootDirSegmentReference, "$Secure", false, DateTime.Now);
secureFileNameRecord.FileAttributes = FileAttributes.Hidden | FileAttributes.System;
FileRecordSegment secureSegment = CreateBaseRecordSegment(MasterFileTable.SecureSegmentNumber, (ushort)MasterFileTable.SecureSegmentNumber, secureFileNameRecord);
secureSegment.IsSpecialIndex = true;
secureSegment.ReferenceCount = 1;
secureSegment.CreateAttributeRecord(AttributeType.Data, "$SDS");
IndexRootRecord sdh = (IndexRootRecord)secureSegment.CreateAttributeRecord(AttributeType.IndexRoot, "$SDH");
IndexHelper.InitializeIndexRoot(sdh, AttributeType.None, CollationRule.SecurityHash, bytesPerIndexRecord, bytesPerCluster);
IndexRootRecord sii = (IndexRootRecord)secureSegment.CreateAttributeRecord(AttributeType.IndexRoot, "$SII");
IndexHelper.InitializeIndexRoot(sii, AttributeType.None, CollationRule.UnsignedLong, bytesPerIndexRecord, bytesPerCluster);
int upcaseDataClusterCount = (int)Math.Ceiling((double)UpcaseFileLength / bytesPerCluster);
FileNameRecord upcaseFileNameRecord = new FileNameRecord(MasterFileTable.RootDirSegmentReference, "$UpCase", false, DateTime.Now);
upcaseFileNameRecord.AllocatedLength = UpcaseFileLength;
upcaseFileNameRecord.FileSize = UpcaseFileLength;
upcaseFileNameRecord.FileAttributes = FileAttributes.Hidden | FileAttributes.System;
FileRecordSegment upcaseSegment = CreateBaseRecordSegment(MasterFileTable.UpCaseSegmentNumber, (ushort)MasterFileTable.UpCaseSegmentNumber, upcaseFileNameRecord);
upcaseSegment.ReferenceCount = 1;
NonResidentAttributeRecord upcaseFileDataRecord = (NonResidentAttributeRecord)upcaseSegment.CreateAttributeRecord(AttributeType.Data, String.Empty, false);
upcaseFileDataRecord.AllocatedLength = UpcaseFileLength;
upcaseFileDataRecord.FileSize = UpcaseFileLength;
upcaseFileDataRecord.ValidDataLength = UpcaseFileLength;
long upcaseDataStartLCN = attributeDefinitionStartLCN + attributeDefinitionClusterCount;
upcaseFileDataRecord.DataRunSequence.Add(new DataRun(upcaseDataClusterCount, upcaseDataStartLCN));
upcaseFileDataRecord.HighestVCN = upcaseDataClusterCount - 1;
FileNameRecord extendFileNameRecord = new FileNameRecord(MasterFileTable.RootDirSegmentReference, "$Extend", true, DateTime.Now);
extendFileNameRecord.FileAttributes = FileAttributes.System | FileAttributes.Hidden | FileAttributes.FileNameIndexPresent;
FileRecordSegment extendSegment = CreateBaseRecordSegment(MasterFileTable.ExtendSegmentNumber, (ushort)MasterFileTable.ExtendSegmentNumber, extendFileNameRecord);
extendSegment.IsDirectory = true;
extendSegment.ReferenceCount = 1;
IndexRootRecord extendIndexRoot = (IndexRootRecord)extendSegment.CreateAttributeRecord(AttributeType.IndexRoot, IndexHelper.GetIndexName(AttributeType.FileName));
IndexHelper.InitializeIndexRoot(extendIndexRoot, AttributeType.FileName, CollationRule.Filename, bytesPerIndexRecord, bytesPerCluster);
FileNameRecord mftMirrorFileNameRecord = new FileNameRecord(MasterFileTable.RootDirSegmentReference, "$MFTMirr", false, DateTime.Now);
int mftMirrorDataLength = 4 * bytesPerFileRecordSegment;
int mftMirrorDataClusterCount = (int)Math.Ceiling((double)mftMirrorDataLength / bytesPerCluster);
int mftMirrorAllocatedLength = mftMirrorDataClusterCount * bytesPerCluster;
mftMirrorFileNameRecord.AllocatedLength = (ulong)mftMirrorAllocatedLength;
mftMirrorFileNameRecord.FileSize = (ulong)mftMirrorDataLength;
mftMirrorFileNameRecord.FileAttributes = FileAttributes.Hidden | FileAttributes.System;
FileRecordSegment mftMirrorSegment = CreateBaseRecordSegment(MasterFileTable.MftMirrorSegmentNumber, (ushort)MasterFileTable.MftMirrorSegmentNumber, mftMirrorFileNameRecord);
mftMirrorSegment.ReferenceCount = 1;
NonResidentAttributeRecord mftMirrorDataRecord = (NonResidentAttributeRecord)mftMirrorSegment.CreateAttributeRecord(AttributeType.Data, String.Empty, false);
mftMirrorDataRecord.AllocatedLength = (ulong)mftMirrorAllocatedLength;
mftMirrorDataRecord.FileSize = (ulong)mftMirrorDataLength;
mftMirrorDataRecord.ValidDataLength = (ulong)mftMirrorDataLength;
long mftMirrorDataStartLCN = upcaseDataStartLCN + upcaseDataClusterCount;
mftMirrorDataRecord.DataRunSequence.Add(new DataRun(mftMirrorDataClusterCount, mftMirrorDataStartLCN));
mftMirrorDataRecord.HighestVCN = mftMirrorDataClusterCount - 1;
FileNameRecord rootDirFileNameRecord = new FileNameRecord(MasterFileTable.RootDirSegmentReference, ".", true, DateTime.Now);
rootDirFileNameRecord.FileAttributes = FileAttributes.System | FileAttributes.Hidden | FileAttributes.FileNameIndexPresent;
FileRecordSegment rootDirSegment = CreateBaseRecordSegment(MasterFileTable.RootDirSegmentNumber, (ushort)MasterFileTable.RootDirSegmentNumber, rootDirFileNameRecord);
rootDirSegment.IsDirectory = true;
rootDirSegment.ReferenceCount = 1;
IndexRecord rootDirIndexRecord = new IndexRecord();
rootDirIndexRecord.RecordVBN = 0;
// Note that we add the index entries according to collation rules
rootDirIndexRecord.IndexEntries.Add(new IndexEntry(attributeDefinitionSegment.SegmentReference, attributeDefinitionFileNameRecord.GetBytes()));
rootDirIndexRecord.IndexEntries.Add(new IndexEntry(badClustersSegment.SegmentReference, badClustersFileNameRecord.GetBytes()));
rootDirIndexRecord.IndexEntries.Add(new IndexEntry(volumeBitmapSegment.SegmentReference, volumeBitmapFileNameRecord.GetBytes()));
rootDirIndexRecord.IndexEntries.Add(new IndexEntry(bootSegment.SegmentReference, bootFileNameRecord.GetBytes()));
rootDirIndexRecord.IndexEntries.Add(new IndexEntry(extendSegment.SegmentReference, extendFileNameRecord.GetBytes()));
rootDirIndexRecord.IndexEntries.Add(new IndexEntry(logFileSegment.SegmentReference, logFileNameRecord.GetBytes()));
rootDirIndexRecord.IndexEntries.Add(new IndexEntry(mftSegment.SegmentReference, mftFileNameRecord.GetBytes()));
rootDirIndexRecord.IndexEntries.Add(new IndexEntry(mftMirrorSegment.SegmentReference, mftMirrorFileNameRecord.GetBytes()));
rootDirIndexRecord.IndexEntries.Add(new IndexEntry(secureSegment.SegmentReference, secureFileNameRecord.GetBytes()));
rootDirIndexRecord.IndexEntries.Add(new IndexEntry(upcaseSegment.SegmentReference, upcaseFileNameRecord.GetBytes()));
rootDirIndexRecord.IndexEntries.Add(new IndexEntry(volumeSegment.SegmentReference, volumeFileNameRecord.GetBytes()));
rootDirIndexRecord.IndexEntries.Add(new IndexEntry(rootDirSegment.SegmentReference, rootDirFileNameRecord.GetBytes()));
long rootDirIndexRecordStartLCN = mftMirrorDataStartLCN + mftMirrorDataClusterCount;
int rootDirIndexRecordClusterCount = (int)Math.Ceiling((double)bytesPerIndexRecord / bytesPerCluster);
int rootDirIndexRecordAllocatedLength = rootDirIndexRecordClusterCount * bytesPerCluster;
string rootDirIndexName = IndexHelper.GetIndexName(AttributeType.FileName);
IndexRootRecord rootDirIndexRoot = (IndexRootRecord)rootDirSegment.CreateAttributeRecord(AttributeType.IndexRoot, rootDirIndexName);
IndexHelper.InitializeIndexRoot(rootDirIndexRoot, AttributeType.FileName, CollationRule.Filename, bytesPerIndexRecord, bytesPerCluster);
rootDirIndexRoot.IsParentNode = true;
IndexEntry rootEntry = new IndexEntry();
rootEntry.ParentNodeForm = true;
rootEntry.SubnodeVBN = 0;
rootDirIndexRoot.IndexEntries.Add(rootEntry);
IndexAllocationRecord rootDirIndexAllocation = (IndexAllocationRecord)rootDirSegment.CreateAttributeRecord(AttributeType.IndexAllocation, rootDirIndexName, false);
rootDirIndexAllocation.AllocatedLength = (uint)rootDirIndexRecordAllocatedLength;
rootDirIndexAllocation.FileSize = (uint)bytesPerIndexRecord;
rootDirIndexAllocation.ValidDataLength = (uint)bytesPerIndexRecord;
rootDirIndexAllocation.DataRunSequence.Add(new DataRun(rootDirIndexRecordClusterCount, rootDirIndexRecordStartLCN));
rootDirIndexAllocation.HighestVCN = rootDirIndexRecordClusterCount - 1;
ResidentAttributeRecord rootDirBitmap = (ResidentAttributeRecord)rootDirSegment.CreateAttributeRecord(AttributeType.Bitmap, rootDirIndexName);
rootDirBitmap.Data = new byte[BitmapData.ExtendGranularity];
BitmapData.SetBit(rootDirBitmap.Data, 0);
long numberOfClustersInUse = rootDirIndexRecordStartLCN + rootDirIndexRecordClusterCount;
long volumeBitmapStartSector = volumeBitmapStartLCN * sectorsPerCluster;
WriteVolumeBitmap(volume, volumeBitmapStartSector, volumeClusterCount, numberOfClustersInUse);
long mftBitmapStartSector = mftBitmapStartLCN * sectorsPerCluster;
WriteMftBitmap(volume, mftBitmapStartSector, numberOfMftRecords, mftBitmapLength);
// Write MFT data
byte[] mftData = new byte[mftDataLength];
long mftDataStartSector = mftDataStartLCN * sectorsPerCluster;
WriteFileRecordSegment(mftData, mftSegment, bytesPerFileRecordSegment, minorNTFSVersion);
WriteFileRecordSegment(mftData, mftMirrorSegment, bytesPerFileRecordSegment, minorNTFSVersion);
WriteFileRecordSegment(mftData, logFileSegment, bytesPerFileRecordSegment, minorNTFSVersion);
WriteFileRecordSegment(mftData, volumeSegment, bytesPerFileRecordSegment, minorNTFSVersion);
WriteFileRecordSegment(mftData, attributeDefinitionSegment, bytesPerFileRecordSegment, minorNTFSVersion);
WriteFileRecordSegment(mftData, rootDirSegment, bytesPerFileRecordSegment, minorNTFSVersion);
WriteFileRecordSegment(mftData, volumeBitmapSegment, bytesPerFileRecordSegment, minorNTFSVersion);
WriteFileRecordSegment(mftData, bootSegment, bytesPerFileRecordSegment, minorNTFSVersion);
WriteFileRecordSegment(mftData, badClustersSegment, bytesPerFileRecordSegment, minorNTFSVersion);
WriteFileRecordSegment(mftData, secureSegment, bytesPerFileRecordSegment, minorNTFSVersion);
WriteFileRecordSegment(mftData, upcaseSegment, bytesPerFileRecordSegment, minorNTFSVersion);
WriteFileRecordSegment(mftData, extendSegment, bytesPerFileRecordSegment, minorNTFSVersion);
for (long segmentNumber = MasterFileTable.ExtendSegmentNumber + 1; segmentNumber < MasterFileTable.FirstReservedSegmentNumber; segmentNumber++)
{
FileRecordSegment systemSegment = CreateSystemReservedSegment(segmentNumber);
WriteFileRecordSegment(mftData, systemSegment, bytesPerFileRecordSegment, minorNTFSVersion);
}
volume.WriteSectors(mftDataStartSector, mftData);
long upcaseDataStartSector = upcaseDataStartLCN * sectorsPerCluster;
WriteUpCaseFile(volume, upcaseDataStartSector);
long rootDirIndexRecordStartSector = rootDirIndexRecordStartLCN * sectorsPerCluster;
WriteIndexRecord(volume, rootDirIndexRecordStartSector, rootDirIndexRecord, bytesPerIndexRecord);
// Write MFT mirror data
byte[] mftMirrorData = new byte[mftMirrorDataLength];
long mftMirrorDataStartSector = mftMirrorDataStartLCN * sectorsPerCluster;
WriteFileRecordSegment(mftMirrorData, mftSegment, bytesPerFileRecordSegment, minorNTFSVersion);
WriteFileRecordSegment(mftMirrorData, mftMirrorSegment, bytesPerFileRecordSegment, minorNTFSVersion);
WriteFileRecordSegment(mftMirrorData, logFileSegment, bytesPerFileRecordSegment, minorNTFSVersion);
WriteFileRecordSegment(mftMirrorData, volumeSegment, bytesPerFileRecordSegment, minorNTFSVersion);
volume.WriteSectors(mftMirrorDataStartSector, mftMirrorData);
NTFSBootRecord bootRecord = CreateNTFSBootRecord(volumeClusterCount, sectorsPerCluster, volume.BytesPerSector, bytesPerFileRecordSegment, bytesPerIndexRecord, mftDataStartLCN, mftMirrorDataStartLCN);
volume.WriteSectors(0, bootRecord.GetBytes());
volume.WriteSectors(volume.TotalSectors - 1, bootRecord.GetBytes());
return(new NTFSVolume(volume));
}
public virtual void MoveFile(FileRecord fileRecord, MftSegmentReference newParentDirectory, string newFileName)
{
// Worst case scenrario: the new parent directory index requires multiple splits.
// We assume IndexData.ExtendGranularity is bigger than or equal to the number of splits.
if (NumberOfFreeClusters < NumberOfClustersRequiredToExtendIndex)
{
throw new DiskFullException();
}
lock (m_mftLock)
{
FileRecord oldParentDirectoryRecord = GetFileRecord(fileRecord.ParentDirectoryReference);
IndexData oldParentDirectoryIndex = new IndexData(this, oldParentDirectoryRecord, AttributeType.FileName);
IndexData newParentDirectoryIndex;
if (fileRecord.ParentDirectoryReference == newParentDirectory)
{
newParentDirectoryIndex = oldParentDirectoryIndex;
}
else
{
FileRecord newParentDirectoryRecord = GetFileRecord(newParentDirectory);
newParentDirectoryIndex = new IndexData(this, newParentDirectoryRecord, AttributeType.FileName);
}
if (newParentDirectoryIndex.ContainsFileName(newFileName))
{
throw new AlreadyExistsException();
}
List <FileNameRecord> fileNameRecords = fileRecord.FileNameRecords;
uint transactionID = m_logClient.AllocateTransactionID();
foreach (FileNameRecord fileNameRecord in fileNameRecords)
{
oldParentDirectoryIndex.RemoveEntry(fileNameRecord.GetBytes());
}
// Windows will not update the dates and FileAttributes in $File_Name as often as their counterparts in $STANDARD_INFORMATION.
DateTime creationTime = fileRecord.StandardInformation.CreationTime;
DateTime modificationTime = fileRecord.StandardInformation.ModificationTime;
DateTime mftModificationTime = fileRecord.StandardInformation.MftModificationTime;
DateTime lastAccessTime = fileRecord.StandardInformation.LastAccessTime;
ulong allocatedLength = fileRecord.FileNameRecord.AllocatedLength;
FileAttributes fileAttributes = fileRecord.StandardInformation.FileAttributes;
ushort packedEASize = fileRecord.FileNameRecord.PackedEASize;
// Windows NTFS v5.1 driver does not usually update the value of the FileSize field belonging to the FileNameRecords that are stored in the FileRecord.
// The driver does update the value during a rename, which is inconsistent file creation and is likely to be incidental rather than intentional.
// We will set the value to 0 to be consistent with file creation.
fileNameRecords = IndexHelper.GenerateFileNameRecords(newParentDirectory, newFileName, fileRecord.IsDirectory, GenerateDosNames, newParentDirectoryIndex, creationTime, modificationTime, mftModificationTime, lastAccessTime, allocatedLength, 0, fileAttributes, packedEASize);
fileRecord.RemoveAttributeRecords(AttributeType.FileName, String.Empty);
foreach (FileNameRecord fileNameRecord in fileNameRecords)
{
FileNameAttributeRecord fileNameAttribute = (FileNameAttributeRecord)fileRecord.CreateAttributeRecord(AttributeType.FileName, String.Empty);
fileNameAttribute.IsIndexed = true;
fileNameAttribute.Record = fileNameRecord;
}
UpdateFileRecord(fileRecord, transactionID);
foreach (FileNameRecord fileNameRecord in fileNameRecords)
{
if (!fileRecord.IsDirectory)
{
fileNameRecord.FileSize = fileRecord.DataRecord.DataLength;
}
newParentDirectoryIndex.AddEntry(fileRecord.BaseSegmentReference, fileNameRecord.GetBytes());
}
m_logClient.WriteForgetTransactionRecord(transactionID);
m_logClient.WriteRestartRecord(true);
}
}
