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|
const
FSCTL_GET_NTFS_VOLUME_DATA = (
(FILE_DEVICE_FILE_SYSTEM shl 16) or (FILE_ANY_ACCESS shl 14) or
(25 shl 2) or METHOD_BUFFERED);
{$EXTERNALSYM FSCTL_GET_NTFS_VOLUME_DATA}
FSCTL_GET_NTFS_FILE_RECORD = (
(FILE_DEVICE_FILE_SYSTEM shl 16) or (FILE_ANY_ACCESS shl 14) or
(26 shl 2) or METHOD_BUFFERED);
{$EXTERNALSYM FSCTL_GET_NTFS_FILE_RECORD}
type
//
// Structures for FSCTL_GET_NTFS_VOLUME_DATA.
// The user must pass the basic buffer below. Ntfs
// will return as many fields as available in the extended
// buffer which follows immediately after the VOLUME_DATA_BUFFER.
//
PNTFS_VOLUME_DATA_BUFFER = ^NTFS_VOLUME_DATA_BUFFER;
{$EXTERNALSYM PNTFS_VOLUME_DATA_BUFFER}
NTFS_VOLUME_DATA_BUFFER = record
VolumeSerialNumber: LARGE_INTEGER;
NumberSectors: LARGE_INTEGER;
TotalClusters: LARGE_INTEGER;
FreeClusters: LARGE_INTEGER;
TotalReserved: LARGE_INTEGER;
BytesPerSector: DWORD;
BytesPerCluster: DWORD;
BytesPerFileRecordSegment: DWORD;
ClustersPerFileRecordSegment: DWORD;
MftValidDataLength: LARGE_INTEGER;
MftStartLcn: LARGE_INTEGER;
Mft2StartLcn: LARGE_INTEGER;
MftZoneStart: LARGE_INTEGER;
MftZoneEnd: LARGE_INTEGER;
end;
{$EXTERNALSYM NTFS_VOLUME_DATA_BUFFER}
TNtfsVolumeDataBuffer = NTFS_VOLUME_DATA_BUFFER;
PNtfsVolumeDataBuffer = PNTFS_VOLUME_DATA_BUFFER;
//
// Structures for FSCTL_GET_NTFS_FILE_RECORD
//
PNTFS_FILE_RECORD_INPUT_BUFFER = ^NTFS_FILE_RECORD_INPUT_BUFFER;
{$EXTERNALSYM PNTFS_FILE_RECORD_INPUT_BUFFER}
NTFS_FILE_RECORD_INPUT_BUFFER = record
FileReferenceNumber: LARGE_INTEGER;
end;
{$EXTERNALSYM NTFS_FILE_RECORD_INPUT_BUFFER}
TNtfsFileRecordInputBuffer = NTFS_FILE_RECORD_INPUT_BUFFER;
PNtfsFileRecordInputBuffer = PNTFS_FILE_RECORD_INPUT_BUFFER;
PNTFS_FILE_RECORD_OUTPUT_BUFFER = ^NTFS_FILE_RECORD_OUTPUT_BUFFER;
{$EXTERNALSYM PNTFS_FILE_RECORD_OUTPUT_BUFFER}
NTFS_FILE_RECORD_OUTPUT_BUFFER = record
FileReferenceNumber: LARGE_INTEGER;
FileRecordLength: DWORD;
FileRecordBuffer: array [0..0] of BYTE;
end;
{$EXTERNALSYM NTFS_FILE_RECORD_OUTPUT_BUFFER}
TNtfsFileRecordOutputBuffer = NTFS_FILE_RECORD_OUTPUT_BUFFER;
PNtfsFileRecordOutputBuffer = PNTFS_FILE_RECORD_OUTPUT_BUFFER;
//
// Structure for NTFS_RECORD_HEADER
//
USHORT = Word;
{$EXTERNALSYM USHORT}
USN = LONGLONG;
{$EXTERNALSYM USN}
_NTFS_RECORD_HEADER = record
//Type_: ULONG;
Type_ : array[1..4] of Char;
UsaOffset: USHORT;
UsaCount: USHORT;
Usn: USN;
end;
NTFS_RECORD_HEADER = _NTFS_RECORD_HEADER;
PNTFS_RECORD_HEADER = ^NTFS_RECORD_HEADER;
TNtfsRecordHeader = NTFS_RECORD_HEADER;
PNtfsRecordHeader = ^TNtfsRecordHeader;
//
// Structure for FILE_RECORD_HEADER
//
ULONGLONG = Int64;
{$EXTERNALSYM ULONGLONG}
_FILE_RECORD_HEADER = record
Ntfs: NTFS_RECORD_HEADER;
SequenceNumber: USHORT;
LinkCount: USHORT;
AttributesOffset: USHORT;
Flags: USHORT; // 0x0001 = InUse, 0x0002 = Directory
BytesInUse: ULONG;
BytesAllocated: ULONG;
BaseFileRecord: ULONGLONG;
NextAttributeNumber: USHORT;
end;
FILE_RECORD_HEADER = _FILE_RECORD_HEADER;
PFILE_RECORD_HEADER = ^FILE_RECORD_HEADER;
TFileRecordHeader = FILE_RECORD_HEADER;
PFileRecordHeader = ^TFileRecordHeader;
const
//Type d'attribut d'un FILE_RECORD_HEADER
AttributeStandardInformation = $10;
AttributeAttributeList = $20;
AttributeFileName = $30;
AttributeObjectId = $40;
AttributeSecurityDescriptor = $50;
AttributeVolumeName = $60;
AttributeVolumeInformation = $70;
AttributeData = $80;
AttributeIndexRoot = $90;
AttributeIndexAllocation = $A0;
AttributeBitmap = $B0;
AttributeReparsePoint = $C0;
AttributeEAInformation = $D0;
AttributeEA = $E0;
AttributePropertySet = $F0;
AttributeLoggedUtilityStream = $100;
//Attribut résident d'un FILE_RECORD_HEADER
type
ATTRIBUTE_TYPE = AttributeStandardInformation..AttributeLoggedUtilityStream;
PATTRIBUTE_TYPE = ^ATTRIBUTE_TYPE;
TAttributeType = ATTRIBUTE_TYPE;
_ATTRIBUTE = record
AttributeType: ATTRIBUTE_TYPE;
Length: ULONG;
Nonresident: ByteBool;
NameLength: UCHAR;
NameOffset: USHORT;
Flags: USHORT; // 0x0001 = Compressed
AttributeNumber: USHORT;
end;
ATTRIBUTE = _ATTRIBUTE;
PATTRIBUTE = ^ATTRIBUTE;
TAttribute = ATTRIBUTE;
procedure TForm1.btnMFTClick(Sender: TObject);
var
vHandleVolume : THandle;
vLastError : Cardinal;
vNtfsVolumeData : TNtfsVolumeDataBuffer;
vBytes : DWORD;
vLecteur : string;
vTotalFileCount : LONGLONG;
vi : LONGLONG;
vNtfsFileRecordInputBuffer : TNtfsFileRecordInputBuffer;
vNtfsFileRecordOutputBuffer : TNtfsFileRecordOutputBuffer;
vNtfsRecordHeader : TNtfsRecordHeader;
vFileRecordHeader : TFileRecordHeader;
vAttribut : TAttribute;
vNtfsFileRecordInputBufferPrecedent : TNtfsFileRecordInputBuffer;
vBuffer : PChar;
vBufLen : Cardinal;
vPos : Cardinal;
i : integer;
procedure printf(wTexte : string);
begin
Memo1.Lines.Add(wTexte);
end;
begin
//Initialisation
Memo1.Lines.Clear();
memo1.Lines.BeginUpdate();
vLecteur := 'd:';
i := 0;
//Handle sur le volume
vHandleVolume := CreateFile(
PAnsiChar('\\.\' + vLecteur),
GENERIC_READ,
FILE_SHARE_READ or FILE_SHARE_WRITE,
nil,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
0
);
//Vérification
if vHandleVolume = INVALID_HANDLE_VALUE then
begin
vLastError := GetLastError();
printf(Format('%s [%s] (CREATEFILE)', [SysErrorMessage(vLastError), IntToStr(vLastError)]));
Exit;
end;
if not DeviceIoControl(
vHandleVolume,
FSCTL_GET_NTFS_VOLUME_DATA,
nil,
0,
@vNtfsVolumeData,
SizeOf(vNtfsVolumeData),
vBytes,
nil
) then
begin
vLastError := GetLastError();
printf(Format('%s [%s] (GET_NTFS_VOLUME_DATA)', [SysErrorMessage(vLastError), IntToStr(vLastError)]));
CloseHandle(vHandleVolume);
Exit;
end;
printf('Volume : ' + vLecteur);
//printf('VolumeSerialNumber : ' + IntToStr(vNtfsVolumeData.VolumeSerialNumber.QuadPart));
printf('VolumeSerialNumber : ' + IntToHex(vNtfsVolumeData.VolumeSerialNumber.QuadPart, 16));
printf('NumberSectors : ' + IntToHex(vNtfsVolumeData.NumberSectors.QuadPart, 16));
printf('TotalClusters : ' + IntToHex(vNtfsVolumeData.TotalClusters.QuadPart, 16));
printf('FreeClusters : ' + IntToHex(vNtfsVolumeData.FreeClusters.QuadPart, 16));
printf('TotalReserved : ' + IntToHex(vNtfsVolumeData.TotalReserved.QuadPart, 16));
printf('BytesPerSector : ' + IntToStr(vNtfsVolumeData.BytesPerSector));
printf('BytesPerCluster : ' + IntToStr(vNtfsVolumeData.BytesPerCluster));
printf('BytesPerFileRecordSegment : ' + IntToStr(vNtfsVolumeData.BytesPerFileRecordSegment));
printf('ClustersPerFileRecordSegment : ' + IntToStr(vNtfsVolumeData.ClustersPerFileRecordSegment));
printf('MftValidDataLength : ' + IntToHex(vNtfsVolumeData.MftValidDataLength.QuadPart, 16));
printf('MftStartLcn : ' + IntToHex(vNtfsVolumeData.MftStartLcn.QuadPart, 16));
printf('Mft2StartLcn : ' + IntToHex(vNtfsVolumeData.Mft2StartLcn.QuadPart, 16));
printf('MftZoneStart : ' + IntToHex(vNtfsVolumeData.MftZoneStart.QuadPart, 16));
printf('MftZoneEnd : ' + IntToHex(vNtfsVolumeData.MftZoneEnd.QuadPart, 16));
//Nombre de fichiers
vTotalFileCount := vNtfsVolumeData.MftValidDataLength.QuadPart div vNtfsVolumeData.BytesPerFileRecordSegment;// vNum.QuadPart;
printf('TotalEntries : ' + IntToStr(vTotalFileCount));
//Lecture de la MFT
//-> On ne peut pas faire un for avec un Int64 d'où le repeat !
vI := 0;
vNtfsFileRecordInputBufferPrecedent.FileReferenceNumber.QuadPart := 0;
repeat
//InpuBuffer
//--> A pointer to the input buffer, an NTFS_FILE_RECORD_INPUT_BUFFER structure.
//--> The file identifier corresponding to the NTFS file system file record for which information is returned is included in this buffer
vNtfsFileRecordInputBuffer.FileReferenceNumber.QuadPart := vI;
//vNtfsFileRecordInputBuffer.FileReferenceNumber.HighPart := vI;
//vNtfsFileRecordInputBuffer.FileReferenceNumber.LowPart := 0;
//OutputBuffer
//--> To determine the correct size of the output buffer pointed to by lpOutBuffer, first
//--> call the FSCTL_GET_NTFS_VOLUME_DATA control code to get the size of one file record.
//--> This is the value of the BytesPerFileRecordSegment member of the returned NTFS_VOLUME_DATA_BUFFER structure.
//--> Then set the size of the output buffer to the following expression:
//--> sizeof (NTFS_FILE_RECORD_OUTPUT_BUFFER) + sizeof (one file record) - 1
vBufLen := SizeOf(NTFS_FILE_RECORD_OUTPUT_BUFFER) + vNtfsVolumeData.BytesPerFileRecordSegment - 1;
GetMem(vBuffer, vBufLen);
ZeroMemory(vBuffer, vBufLen);
//Appel DeviceIoControl...
if not DeviceIoControl(
vHandleVolume,
FSCTL_GET_NTFS_FILE_RECORD,
@vNtfsFileRecordInputBuffer,
SizeOf(vNtfsFileRecordInputBuffer),
@vBuffer[0],
vBufLen,//SizeOf(vBuffer),
vBytes,
nil
) then
begin
vLastError := GetLastError();
printf(Format('%s [%s] (GET_NTFS_FILE_RECORD)', [SysErrorMessage(vLastError), IntToStr(vLastError)]));
//CloseHandle(vHandleVolume); Fait en sortie de boucle !!!
Break;
end;
//Recopie du buffer vers vNtfsFileRecordOutputBuffer
CopyMemory(@vNtfsFileRecordOutputBuffer, @vBuffer[0], SizeOf(NTFS_FILE_RECORD_OUTPUT_BUFFER));
if vNtfsFileRecordOutputBuffer.FileReferenceNumber.QuadPart = vNtfsFileRecordInputBufferPrecedent.FileReferenceNumber.QuadPart then
begin
//Continue
end
else
begin
inc(i);
vNtfsFileRecordInputBufferPrecedent.FileReferenceNumber := vNtfsFileRecordOutputBuffer.FileReferenceNumber;
//Obtention de l'entrée MFT soit un record header
CopyMemory(@vNtfsRecordHeader, @vNtfsFileRecordOutputBuffer.FileRecordBuffer, SizeOf(NTFS_RECORD_HEADER));
//Si l'entrée correspond à un fichier, lire en tant que FILE_RECORD_HEADER
if vNtfsRecordHeader.Type_ = 'FILE' then
begin
//Obtention de l'entée MFT dans un FILE_RECORD_HEADER
ZeroMemory(@vFileRecordHeader, SizeOf(FILE_RECORD_HEADER));
CopyMemory(@vFileRecordHeader, @vNtfsFileRecordOutputBuffer.FileRecordBuffer, SizeOf(FILE_RECORD_HEADER));
//dump
printf('************************************************');
printf(inttostr(i));
printf('SequenceNumber : ' + IntToStr(vFileRecordHeader.SequenceNumber ));
printf('LinkCount : ' + IntToStr(vFileRecordHeader.LinkCount ));
printf('AttributesOffset : ' + IntToStr(vFileRecordHeader.AttributesOffset ));
printf('Flags : ' + IntToStr(vFileRecordHeader.Flags ));
printf('BytesInUse : ' + IntToStr(vFileRecordHeader.BytesInUse ));
printf('BytesAllocated : ' + IntToStr(vFileRecordHeader.BytesAllocated ));
printf('BaseFileRecord : ' + IntToStr(vFileRecordHeader.BaseFileRecord ));
printf('NextAttributeNumber : ' + IntToStr(vFileRecordHeader.NextAttributeNumber));
//Position du premier attribut
vPos := vFileRecordHeader.AttributesOffset;
//Lecture des attributs
//printf('************************************************');
if vFileRecordHeader.BytesInUse <> 0 then
begin
printf(IntToStr(vI) + '=>' + IntToSTr(vFileRecordHeader.BytesInUse));
end;
while vPos < vFileRecordHeader.AttributesOffset + vFileRecordHeader.BytesInUse do
begin
//Copie de l'attribut dans un record
CopyMemory(@vAttribut, @vNtfsFileRecordOutputBuffer.FileRecordBuffer[vPos], SizeOf(_ATTRIBUTE));
//Type de l'attribut
case vAttribut.AttributeType of
AttributeStandardInformation : printf('AttributeStandardInformation');
AttributeAttributeList : printf('AttributeAttributeList');
AttributeFileName : printf('AttributeFileName');
AttributeObjectId : printf('AttributeObjectId');
AttributeSecurityDescriptor : printf('AttributeSecurityDescriptor');
AttributeVolumeName : printf('AttributeVolumeName');
AttributeVolumeInformation : printf('AttributeVolumeInformation');
AttributeData : printf('AttributeData');
AttributeIndexRoot : printf('AttributeIndexRoot');
AttributeIndexAllocation : printf('AttributeIndexAllocation');
AttributeBitmap : printf('AttributeBitmap');
AttributeReparsePoint : printf('AttributeReparsePoint');
AttributeEAInformation : printf('AttributeEAInformation');
AttributeEA : printf('AttributeEA');
AttributePropertySet : printf('AttributePropertySet');
AttributeLoggedUtilityStream : printf('AttributeLoggedUtilityStream');
else printf('/!\ Attribut inconnu');
end;
//Prochain attribut
if vAttribut.Nonresident then
begin
printf('Non résident');
end
else
begin
printf('Résident');
end;
Break;
end;
end
else
begin
printf('Type :' + vNtfsRecordHeader.Type_);
end;
end;
FreeMem(vBuffer);
//Incrémentation
vI := vI + 1;
//if vI = 100 then vI := vTotalFileCount;
//vI := vTotalFileCount;
until vI = vTotalFileCount;
//Libération du handle sur le volume
CloseHandle(vHandleVolume);
printf(inttostr(i));
//Finalisation
memo1.Lines.EndUpdate();
ShowMessage('Terminé !');
end; |
Lecture de la MFT ("FAT") d'un volume NTFS
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