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 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);
}
}
