private File CreateFixedSystemFile(long mftIndex, long firstCluster, ulong numClusters, bool wipe)
{
BiosParameterBlock bpb = _context.BiosParameterBlock;
if (wipe)
{
byte[] wipeBuffer = new byte[bpb.BytesPerCluster];
_context.RawStream.Position = firstCluster * bpb.BytesPerCluster;
for (ulong i = 0; i < numClusters; ++i)
{
_context.RawStream.Write(wipeBuffer, 0, wipeBuffer.Length);
}
}
FileRecord fileRec = _context.Mft.AllocateRecord((uint)mftIndex, FileRecordFlags.None);
fileRec.Flags = FileRecordFlags.InUse;
fileRec.SequenceNumber = (ushort)mftIndex;
File file = new File(_context, fileRec);
StandardInformation.InitializeNewFile(file, FileAttributeFlags.Hidden | FileAttributeFlags.System);
file.CreateStream(AttributeType.Data, null, firstCluster, numClusters, (uint)bpb.BytesPerCluster);
file.UpdateRecordInMft();
if (_context.ClusterBitmap != null)
{
_context.ClusterBitmap.MarkAllocated(firstCluster, (long)numClusters);
}
return(file);
}
public static File CreateNew(INtfsContext context, FileRecordFlags flags, FileAttributeFlags dirFlags)
{
File newFile = context.AllocateFile(flags);
FileAttributeFlags fileFlags =
FileAttributeFlags.Archive
| FileRecord.ConvertFlags(flags)
| (dirFlags & FileAttributeFlags.Compressed);
AttributeFlags dataAttrFlags = AttributeFlags.None;
if ((dirFlags & FileAttributeFlags.Compressed) != 0)
{
dataAttrFlags |= AttributeFlags.Compressed;
}
StandardInformation.InitializeNewFile(newFile, fileFlags);
if (context.ObjectIds != null)
{
Guid newId = CreateNewGuid(context);
NtfsStream stream = newFile.CreateStream(AttributeType.ObjectId, null);
ObjectId objId = new ObjectId();
objId.Id = newId;
stream.SetContent(objId);
context.ObjectIds.Add(newId, newFile.MftReference, newId, Guid.Empty, Guid.Empty);
}
newFile.CreateAttribute(AttributeType.Data, dataAttrFlags);
newFile.UpdateRecordInMft();
return(newFile);
}
internal static new Directory CreateNew(INtfsContext context, FileAttributeFlags parentDirFlags)
{
Directory dir = (Directory)context.AllocateFile(FileRecordFlags.IsDirectory);
StandardInformation.InitializeNewFile(
dir,
FileAttributeFlags.Archive | (parentDirFlags & FileAttributeFlags.Compressed));
// Create the index root attribute by instantiating a new index
dir.CreateIndex("$I30", AttributeType.FileName, AttributeCollationRule.Filename);
dir.UpdateRecordInMft();
return(dir);
}
private File CreateSystemFile(long mftIndex, FileRecordFlags flags)
{
FileRecord fileRec = _context.Mft.AllocateRecord((uint)mftIndex, flags);
fileRec.SequenceNumber = (ushort)mftIndex;
File file = new File(_context, fileRec);
StandardInformation.InitializeNewFile(file, FileAttributeFlags.Hidden | FileAttributeFlags.System | FileRecord.ConvertFlags(flags));
file.CreateStream(AttributeType.Data, null);
file.UpdateRecordInMft();
return(file);
}
private Directory CreateSystemDirectory(long mftIndex)
{
FileRecord fileRec = _context.Mft.AllocateRecord((uint)mftIndex, FileRecordFlags.None);
fileRec.Flags = FileRecordFlags.InUse | FileRecordFlags.IsDirectory;
fileRec.SequenceNumber = (ushort)mftIndex;
Directory dir = new Directory(_context, fileRec);
StandardInformation.InitializeNewFile(dir, FileAttributeFlags.Hidden | FileAttributeFlags.System);
dir.CreateIndex("$I30", AttributeType.FileName, AttributeCollationRule.Filename);
dir.UpdateRecordInMft();
return(dir);
}
public File InitializeNew(INtfsContext context, long firstBitmapCluster, ulong numBitmapClusters, long firstRecordsCluster, ulong numRecordsClusters)
{
BiosParameterBlock bpb = context.BiosParameterBlock;
FileRecord fileRec = new FileRecord(bpb.BytesPerSector, bpb.MftRecordSize, (uint)MftIndex);
fileRec.Flags = FileRecordFlags.InUse;
fileRec.SequenceNumber = 1;
_recordCache[MftIndex] = fileRec;
_self = new File(context, fileRec);
StandardInformation.InitializeNewFile(_self, FileAttributeFlags.Hidden | FileAttributeFlags.System);
NtfsStream recordsStream = _self.CreateStream(AttributeType.Data, null, firstRecordsCluster, numRecordsClusters, (uint)bpb.BytesPerCluster);
_recordStream = recordsStream.Open(FileAccess.ReadWrite);
Wipe(_recordStream);
NtfsStream bitmapStream = _self.CreateStream(AttributeType.Bitmap, null, firstBitmapCluster, numBitmapClusters, (uint)bpb.BytesPerCluster);
using (Stream s = bitmapStream.Open(FileAccess.ReadWrite))
{
Wipe(s);
s.SetLength(8);
_bitmap = new Bitmap(s, long.MaxValue);
}
_recordLength = context.BiosParameterBlock.MftRecordSize;
_bytesPerSector = context.BiosParameterBlock.BytesPerSector;
_bitmap.MarkPresentRange(0, 1);
// Write the MFT's own record to itself
byte[] buffer = new byte[_recordLength];
fileRec.ToBytes(buffer, 0);
_recordStream.Position = 0;
_recordStream.Write(buffer, 0, _recordLength);
_recordStream.Flush();
return(_self);
}
