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 DirectoryEntry AddEntry(File file, string name, FileNameNamespace nameNamespace)
{
if (name.Length > 255)
{
throw new IOException("Invalid file name, more than 255 characters: " + name);
}
else if (name.IndexOfAny(new char[] { '\0', '/' }) != -1)
{
throw new IOException(@"Invalid file name, contains '\0' or '/': " + name);
}
FileNameRecord newNameRecord = file.GetFileNameRecord(null, true);
newNameRecord.FileNameNamespace = nameNamespace;
newNameRecord.FileName = name;
newNameRecord.ParentDirectory = MftReference;
NtfsStream nameStream = file.CreateStream(AttributeType.FileName, null);
nameStream.SetContent(newNameRecord);
file.HardLinkCount++;
file.UpdateRecordInMft();
Index[newNameRecord] = file.MftReference;
Modified();
UpdateRecordInMft();
return(new DirectoryEntry(this, file.MftReference, newNameRecord));
}
private static void SetSecurityAttribute(File file, string secDesc)
{
NtfsStream rootSecurityStream = file.CreateStream(AttributeType.SecurityDescriptor, null);
SecurityDescriptor sd = new SecurityDescriptor();
sd.Descriptor = new RawSecurityDescriptor(secDesc);
rootSecurityStream.SetContent(sd);
}
public void Delete()
{
if (_records[0].HardLinkCount != 0)
{
throw new InvalidOperationException("Attempt to delete in-use file: " + ToString());
}
_context.ForgetFile(this);
NtfsStream objIdStream = GetStream(AttributeType.ObjectId, null);
if (objIdStream != null)
{
ObjectId objId = objIdStream.GetContent <ObjectId>();
Context.ObjectIds.Remove(objId.Id);
}
// Truncate attributes, allowing for truncation silently removing the AttributeList attribute
// in some cases (large file with all attributes first extent in the first MFT record). This
// releases all allocated clusters in most cases.
List <NtfsAttribute> truncateAttrs = new List <NtfsAttribute>(_attributes.Count);
foreach (var attr in _attributes)
{
if (attr.Type != AttributeType.AttributeList)
{
truncateAttrs.Add(attr);
}
}
foreach (NtfsAttribute attr in truncateAttrs)
{
attr.GetDataBuffer().SetCapacity(0);
}
// If the attribute list record remains, free any possible clusters it owns. We've now freed
// all clusters.
NtfsAttribute attrList = GetAttribute(AttributeType.AttributeList, null);
if (attrList != null)
{
attrList.GetDataBuffer().SetCapacity(0);
}
// Now go through the MFT records, freeing them up
foreach (var mftRecord in _records)
{
_context.Mft.RemoveRecord(mftRecord.Reference);
}
_attributes.Clear();
_records.Clear();
}
public void Accessed()
{
DateTime now = DateTime.UtcNow;
NtfsStream siStream = GetStream(AttributeType.StandardInformation, null);
StandardInformation si = siStream.GetContent <StandardInformation>();
si.LastAccessTime = now;
siStream.SetContent(si);
MarkMftRecordDirty();
}
public static StandardInformation InitializeNewFile(File file, FileAttributeFlags flags)
{
DateTime now = DateTime.UtcNow;
NtfsStream siStream = file.CreateStream(AttributeType.StandardInformation, null);
StandardInformation si = new StandardInformation();
si.CreationTime = now;
si.ModificationTime = now;
si.MftChangedTime = now;
si.LastAccessTime = now;
si.FileAttributes = flags;
siStream.SetContent(si);
return(si);
}
public void Initialize(File file)
{
_self = file;
if (_recordStream != null)
{
_recordStream.Dispose();
}
NtfsStream bitmapStream = _self.GetStream(AttributeType.Bitmap, null);
_bitmap = new Bitmap(bitmapStream.Open(FileAccess.ReadWrite), long.MaxValue);
NtfsStream recordsStream = _self.GetStream(AttributeType.Data, null);
_recordStream = recordsStream.Open(FileAccess.ReadWrite);
}
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);
}
public NtfsFileSystem Format(Stream stream)
{
_context = new NtfsContext();
_context.Options = new NtfsOptions();
_context.RawStream = stream;
_context.AttributeDefinitions = new AttributeDefinitions();
string localAdminString = (ComputerAccount == null)
? "LA"
: new SecurityIdentifier(WellKnownSidType.AccountAdministratorSid, ComputerAccount).ToString();
using (new NtfsTransaction())
{
_clusterSize = 4096;
_mftRecordSize = 1024;
_indexBufferSize = 4096;
long totalClusters = ((SectorCount - 1) * Sizes.Sector) / _clusterSize;
// Allocate a minimum of 8KB for the boot loader, but allow for more
int numBootClusters = Utilities.Ceil(Math.Max((int)(8 * Sizes.OneKiB), BootCode == null ? 0 : BootCode.Length), _clusterSize);
// Place MFT mirror in the middle of the volume
_mftMirrorCluster = totalClusters / 2;
uint numMftMirrorClusters = 1;
// The bitmap is also near the middle
_bitmapCluster = _mftMirrorCluster + 13;
int numBitmapClusters = (int)Utilities.Ceil((totalClusters / 8), _clusterSize);
// The MFT bitmap goes 'near' the start - approx 10% in - but ensure we avoid the bootloader
long mftBitmapCluster = Math.Max(3 + (totalClusters / 10), numBootClusters);
int numMftBitmapClusters = 1;
// The MFT follows it's bitmap
_mftCluster = mftBitmapCluster + numMftBitmapClusters;
int numMftClusters = 8;
if (_mftCluster + numMftClusters > _mftMirrorCluster ||
_bitmapCluster + numBitmapClusters >= totalClusters)
{
throw new IOException("Unable to determine initial layout of NTFS metadata - disk may be too small");
}
CreateBiosParameterBlock(stream, numBootClusters * _clusterSize);
_context.Mft = new MasterFileTable(_context);
File mftFile = _context.Mft.InitializeNew(_context, mftBitmapCluster, (ulong)numMftBitmapClusters, (long)_mftCluster, (ulong)numMftClusters);
File bitmapFile = CreateFixedSystemFile(MasterFileTable.BitmapIndex, _bitmapCluster, (ulong)numBitmapClusters, true);
_context.ClusterBitmap = new ClusterBitmap(bitmapFile);
_context.ClusterBitmap.MarkAllocated(0, numBootClusters);
_context.ClusterBitmap.MarkAllocated(_bitmapCluster, numBitmapClusters);
_context.ClusterBitmap.MarkAllocated(mftBitmapCluster, numMftBitmapClusters);
_context.ClusterBitmap.MarkAllocated(_mftCluster, numMftClusters);
_context.ClusterBitmap.SetTotalClusters(totalClusters);
bitmapFile.UpdateRecordInMft();
File mftMirrorFile = CreateFixedSystemFile(MasterFileTable.MftMirrorIndex, _mftMirrorCluster, numMftMirrorClusters, true);
File logFile = CreateSystemFile(MasterFileTable.LogFileIndex);
using (Stream s = logFile.OpenStream(AttributeType.Data, null, FileAccess.ReadWrite))
{
s.SetLength(Math.Min(Math.Max(2 * Sizes.OneMiB, (totalClusters / 500) * (long)_clusterSize), 64 * Sizes.OneMiB));
byte[] buffer = new byte[1024 * 1024];
for (int i = 0; i < buffer.Length; ++i)
{
buffer[i] = 0xFF;
}
long totalWritten = 0;
while (totalWritten < s.Length)
{
int toWrite = (int)Math.Min(s.Length - totalWritten, buffer.Length);
s.Write(buffer, 0, toWrite);
totalWritten += toWrite;
}
}
File volumeFile = CreateSystemFile(MasterFileTable.VolumeIndex);
NtfsStream volNameStream = volumeFile.CreateStream(AttributeType.VolumeName, null);
volNameStream.SetContent(new VolumeName(Label ?? "New Volume"));
NtfsStream volInfoStream = volumeFile.CreateStream(AttributeType.VolumeInformation, null);
volInfoStream.SetContent(new VolumeInformation(3, 1, VolumeInformationFlags.None));
SetSecurityAttribute(volumeFile, "O:" + localAdminString + "G:BAD:(A;;0x12019f;;;SY)(A;;0x12019f;;;BA)");
volumeFile.UpdateRecordInMft();
_context.GetFileByIndex = delegate(long index) { return(new File(_context, _context.Mft.GetRecord(index, false))); };
_context.AllocateFile = delegate(FileRecordFlags frf) { return(new File(_context, _context.Mft.AllocateRecord(frf, false))); };
File attrDefFile = CreateSystemFile(MasterFileTable.AttrDefIndex);
_context.AttributeDefinitions.WriteTo(attrDefFile);
SetSecurityAttribute(attrDefFile, "O:" + localAdminString + "G:BAD:(A;;FR;;;SY)(A;;FR;;;BA)");
attrDefFile.UpdateRecordInMft();
File bootFile = CreateFixedSystemFile(MasterFileTable.BootIndex, 0, (uint)numBootClusters, false);
SetSecurityAttribute(bootFile, "O:" + localAdminString + "G:BAD:(A;;FR;;;SY)(A;;FR;;;BA)");
bootFile.UpdateRecordInMft();
File badClusFile = CreateSystemFile(MasterFileTable.BadClusIndex);
badClusFile.CreateStream(AttributeType.Data, "$Bad");
badClusFile.UpdateRecordInMft();
File secureFile = CreateSystemFile(MasterFileTable.SecureIndex, FileRecordFlags.HasViewIndex);
secureFile.RemoveStream(secureFile.GetStream(AttributeType.Data, null));
_context.SecurityDescriptors = SecurityDescriptors.Initialize(secureFile);
secureFile.UpdateRecordInMft();
File upcaseFile = CreateSystemFile(MasterFileTable.UpCaseIndex);
_context.UpperCase = UpperCase.Initialize(upcaseFile);
upcaseFile.UpdateRecordInMft();
File objIdFile = File.CreateNew(_context, FileRecordFlags.IsMetaFile | FileRecordFlags.HasViewIndex, FileAttributeFlags.None);
objIdFile.RemoveStream(objIdFile.GetStream(AttributeType.Data, null));
objIdFile.CreateIndex("$O", (AttributeType)0, AttributeCollationRule.MultipleUnsignedLongs);
objIdFile.UpdateRecordInMft();
File reparseFile = File.CreateNew(_context, FileRecordFlags.IsMetaFile | FileRecordFlags.HasViewIndex, FileAttributeFlags.None);
reparseFile.CreateIndex("$R", (AttributeType)0, AttributeCollationRule.MultipleUnsignedLongs);
reparseFile.UpdateRecordInMft();
File quotaFile = File.CreateNew(_context, FileRecordFlags.IsMetaFile | FileRecordFlags.HasViewIndex, FileAttributeFlags.None);
Quotas.Initialize(quotaFile);
Directory extendDir = CreateSystemDirectory(MasterFileTable.ExtendIndex);
extendDir.AddEntry(objIdFile, "$ObjId", FileNameNamespace.Win32AndDos);
extendDir.AddEntry(reparseFile, "$Reparse", FileNameNamespace.Win32AndDos);
extendDir.AddEntry(quotaFile, "$Quota", FileNameNamespace.Win32AndDos);
extendDir.UpdateRecordInMft();
Directory rootDir = CreateSystemDirectory(MasterFileTable.RootDirIndex);
rootDir.AddEntry(mftFile, "$MFT", FileNameNamespace.Win32AndDos);
rootDir.AddEntry(mftMirrorFile, "$MFTMirr", FileNameNamespace.Win32AndDos);
rootDir.AddEntry(logFile, "$LogFile", FileNameNamespace.Win32AndDos);
rootDir.AddEntry(volumeFile, "$Volume", FileNameNamespace.Win32AndDos);
rootDir.AddEntry(attrDefFile, "$AttrDef", FileNameNamespace.Win32AndDos);
rootDir.AddEntry(rootDir, ".", FileNameNamespace.Win32AndDos);
rootDir.AddEntry(bitmapFile, "$Bitmap", FileNameNamespace.Win32AndDos);
rootDir.AddEntry(bootFile, "$Boot", FileNameNamespace.Win32AndDos);
rootDir.AddEntry(badClusFile, "$BadClus", FileNameNamespace.Win32AndDos);
rootDir.AddEntry(secureFile, "$Secure", FileNameNamespace.Win32AndDos);
rootDir.AddEntry(upcaseFile, "$UpCase", FileNameNamespace.Win32AndDos);
rootDir.AddEntry(extendDir, "$Extend", FileNameNamespace.Win32AndDos);
SetSecurityAttribute(rootDir, "O:" + localAdminString + "G:BUD:(A;OICI;FA;;;BA)(A;OICI;FA;;;SY)(A;OICIIO;GA;;;CO)(A;OICI;0x1200a9;;;BU)(A;CI;LC;;;BU)(A;CIIO;DC;;;BU)(A;;0x1200a9;;;WD)");
rootDir.UpdateRecordInMft();
// A number of records are effectively 'reserved'
for (long i = MasterFileTable.ExtendIndex + 1; i <= 15; i++)
{
File f = CreateSystemFile(i);
SetSecurityAttribute(f, "O:S-1-5-21-1708537768-746137067-1060284298-1003G:BAD:(A;;0x12019f;;;SY)(A;;0x12019f;;;BA)");
f.UpdateRecordInMft();
}
}
// XP-style security permissions setup
NtfsFileSystem ntfs = new NtfsFileSystem(stream);
ntfs.SetSecurity(@"$MFT", new RawSecurityDescriptor("O:" + localAdminString + "G:BAD:(A;;FR;;;SY)(A;;FR;;;BA)"));
ntfs.SetSecurity(@"$MFTMirr", new RawSecurityDescriptor("O:" + localAdminString + "G:BAD:(A;;FR;;;SY)(A;;FR;;;BA)"));
ntfs.SetSecurity(@"$LogFile", new RawSecurityDescriptor("O:" + localAdminString + "G:BAD:(A;;FR;;;SY)(A;;FR;;;BA)"));
ntfs.SetSecurity(@"$Bitmap", new RawSecurityDescriptor("O:" + localAdminString + "G:BAD:(A;;FR;;;SY)(A;;FR;;;BA)"));
ntfs.SetSecurity(@"$BadClus", new RawSecurityDescriptor("O:" + localAdminString + "G:BAD:(A;;FR;;;SY)(A;;FR;;;BA)"));
ntfs.SetSecurity(@"$UpCase", new RawSecurityDescriptor("O:" + localAdminString + "G:BAD:(A;;FR;;;SY)(A;;FR;;;BA)"));
ntfs.SetSecurity(@"$Secure", new RawSecurityDescriptor("O:" + localAdminString + "G:BAD:(A;;0x12019f;;;SY)(A;;0x12019f;;;BA)"));
ntfs.SetSecurity(@"$Extend", new RawSecurityDescriptor("O:" + localAdminString + "G:BAD:(A;;0x12019f;;;SY)(A;;0x12019f;;;BA)"));
ntfs.SetSecurity(@"$Extend\$Quota", new RawSecurityDescriptor("O:" + localAdminString + "G:BAD:(A;;0x12019f;;;SY)(A;;0x12019f;;;BA)"));
ntfs.SetSecurity(@"$Extend\$ObjId", new RawSecurityDescriptor("O:" + localAdminString + "G:BAD:(A;;0x12019f;;;SY)(A;;0x12019f;;;BA)"));
ntfs.SetSecurity(@"$Extend\$Reparse", new RawSecurityDescriptor("O:" + localAdminString + "G:BAD:(A;;0x12019f;;;SY)(A;;0x12019f;;;BA)"));
ntfs.CreateDirectory("System Volume Information");
ntfs.SetAttributes("System Volume Information", FileAttributes.Hidden | FileAttributes.System | FileAttributes.Directory);
ntfs.SetSecurity("System Volume Information", new RawSecurityDescriptor("O:BAG:SYD:(A;OICI;FA;;;SY)"));
using (Stream s = ntfs.OpenFile(@"System Volume Information\MountPointManagerRemoteDatabase", FileMode.Create))
{
}
ntfs.SetAttributes(@"System Volume Information\MountPointManagerRemoteDatabase", FileAttributes.Hidden | FileAttributes.System | FileAttributes.Archive);
ntfs.SetSecurity(@"System Volume Information\MountPointManagerRemoteDatabase", new RawSecurityDescriptor("O:BAG:SYD:(A;;FA;;;SY)"));
return(ntfs);
}
public void RemoveStream(NtfsStream stream)
{
RemoveAttribute(stream.Attribute);
}
public void UpdateRecordInMft()
{
if (_dirty)
{
if (NtfsTransaction.Current != null)
{
NtfsStream stream = GetStream(AttributeType.StandardInformation, null);
StandardInformation si = stream.GetContent <StandardInformation>();
si.MftChangedTime = NtfsTransaction.Current.Timestamp;
stream.SetContent(si);
}
bool fixesApplied = true;
while (fixesApplied)
{
fixesApplied = false;
for (int i = 0; i < _records.Count; ++i)
{
var record = _records[i];
bool fixedAttribute = true;
while (record.Size > _mft.RecordSize && fixedAttribute)
{
fixedAttribute = false;
if (!fixedAttribute && !record.IsMftRecord)
{
foreach (var attr in record.Attributes)
{
if (!attr.IsNonResident && !_context.AttributeDefinitions.MustBeResident(attr.AttributeType))
{
MakeAttributeNonResident(new AttributeReference(record.Reference, attr.AttributeId), (int)attr.DataLength);
fixedAttribute = true;
break;
}
}
}
if (!fixedAttribute)
{
foreach (var attr in record.Attributes)
{
if (attr.AttributeType == AttributeType.IndexRoot &&
ShrinkIndexRoot(attr.Name))
{
fixedAttribute = true;
break;
}
}
}
if (!fixedAttribute)
{
if (record.Attributes.Count == 1)
{
fixedAttribute = SplitAttribute(record);
}
else
{
if (_records.Count == 1)
{
CreateAttributeList();
}
fixedAttribute = ExpelAttribute(record);
}
}
fixesApplied |= fixedAttribute;
}
}
}
_dirty = false;
foreach (var record in _records)
{
_mft.WriteRecord(record);
}
}
}