XE 获取硬盘序列号

function TdmCommonFun.GetIdeSerialNumber: AnsiString; stdcall;
const
  IDENTIFY_BUFFER_SIZE = 512;
type
  TIDERegs = packed record
    bFeaturesReg: Byte; // Used for specifying SMART "commands".
    bSectorCountReg: Byte; // IDE sector count register
    bSectorNumberReg: Byte; // IDE sector number register
    bCylLowReg: Byte; // IDE low order cylinder value
    bCylHighReg: Byte; // IDE high order cylinder value
    bDriveHeadReg: Byte; // IDE drive/head register
    bCommandReg: Byte; // Actual IDE command.
    bReserved: Byte; // reserved for future use. Must be zero.
  end;

  TSendCmdInParams = packed record
    // Buffer size in bytes
    cBufferSize: DWORD;
    // Structure with drive register values.
    irDriveRegs: TIDERegs;
    // Physical drive number to send command to (0,1,2,3).
    bDriveNumber: Byte;
    bReserved: array [0 .. 2] of Byte;
    dwReserved: array [0 .. 3] of DWORD;
    bBuffer: array [0 .. 0] of Byte; // Input buffer.
  end;

  TIdSector = packed record
    wGenConfig: word;
    wNumCyls: word;
    wReserved: word;
    wNumHeads: word;
    wBytesPerTrack: word;
    wBytesPerSector: word;
    wSectorsPerTrack: word;
    wVendorUnique: array [0 .. 2] of word;
    sSerialNumber: array [0 .. 19] of ansiCHAR;
    wBufferType: word;
    wBufferSize: word;
    wECCSize: word;
    sFirmwareRev: array [0 .. 7] of ansiCHAR;
    sModelNumber: array [0 .. 39] of ansiCHAR;
    wMoreVendorUnique: word;
    wDoubleWordIO: word;
    wCapabilities: word;
    wReserved1: word;
    wPIOTiming: word;
    wDMATiming: word;
    wBS: word;
    wNumCurrentCyls: word;
    wNumCurrentHeads: word;
    wNumCurrentSectorsPerTrack: word;
    ulCurrentSectorCapacity: DWORD;
    wMultSectorStuff: word;
    ulTotalAddressableSectors: DWORD;
    wSingleWordDMA: word;
    wMultiWordDMA: word;
    bReserved: array [0 .. 127] of Byte;
  end;

  PIdSector = ^TIdSector;

  TDriverStatus = packed record
    // 驱动器返回的错误代码，无错则返回0
    bDriverError: Byte;
    // IDE出错寄存器的内容，只有当bDriverError 为 SMART_IDE_ERROR 时有效
    bIDEStatus: Byte;
    bReserved: array [0 .. 1] of Byte;
    dwReserved: array [0 .. 1] of DWORD;
  end;

  TSendCmdOutParams = packed record
    // bBuffer的大小
    cBufferSize: DWORD;
    // 驱动器状态
    DriverStatus: TDriverStatus;
    // 用于保存从驱动器读出的数据的缓冲区，实际长度由cBufferSize决定
    bBuffer: array [0 .. 0] of Byte;
  end;
var
  hDevice: THandle;
  cbBytesReturned: DWORD;
  SCIP: TSendCmdInParams;
  aIdOutCmd: array [0 .. (SizeOf(TSendCmdOutParams) + IDENTIFY_BUFFER_SIZE - 1)
    - 1] of Byte;
  IdOutCmd: TSendCmdOutParams absolute aIdOutCmd;

  procedure ChangeByteOrder(var Data; Size: Integer);
  var
    ptr: PansiChar;
    i: Integer;
    c: ansiCHAR;
  begin
    ptr := @Data;

    for i := 0 to (Size shr 1) - 1 do
    begin
      c := ptr^;
      ptr^ := (ptr + 1)^;
      (ptr + 1)^ := c;
      Inc(ptr, 2);
    end;
  end;

begin
  Result := ''; // 如果出错则返回空串

  if SysUtils.Win32Platform = VER_PLATFORM_WIN32_NT then
  // Windows NT, Windows 2000
  begin
    // 提示! 改变名称可适用于其它驱动器，如第二个驱动器： '\\.\PhysicalDrive1\'
    hDevice := CreateFile('\\.\PhysicalDrive0', GENERIC_READ or GENERIC_WRITE,
      FILE_SHARE_READ or FILE_SHARE_WRITE, nil, OPEN_EXISTING, 0, 0);
  end
  else // Version Windows 95 OSR2, Windows 98
    hDevice := CreateFile('\\.\SMARTVSD', 0, 0, nil, CREATE_NEW, 0, 0);

  if hDevice = INVALID_HANDLE_VALUE then
    Exit;

  try
    FillChar(SCIP, SizeOf(TSendCmdInParams) - 1, #0);
    FillChar(aIdOutCmd, SizeOf(aIdOutCmd), #0);
    cbBytesReturned := 0;

    // Set up data structures for IDENTIFY command.
    with SCIP do
    begin
      cBufferSize := IDENTIFY_BUFFER_SIZE;

      // bDriveNumber := 0;
      with irDriveRegs do
      begin
        bSectorCountReg := 1;
        bSectorNumberReg := 1;

        // if Win32Platform=VER_PLATFORM_WIN32_NT then bDriveHeadReg := $A0
        // else bDriveHeadReg := $A0 or ((bDriveNum and 1) shl 4);
        bDriveHeadReg := $A0;
        bCommandReg := $EC;
      end;
    end;

    if not DeviceIoControl(hDevice, $0007C088, @SCIP, SizeOf(TSendCmdInParams) -
      1, @aIdOutCmd, SizeOf(aIdOutCmd), cbBytesReturned, nil) then
      Exit;
  finally
    CloseHandle(hDevice);
  end;

  with PIdSector(@IdOutCmd.bBuffer)^ do
  begin
    ChangeByteOrder(sSerialNumber, SizeOf(sSerialNumber));
    (PansiChar(@sSerialNumber) + SizeOf(sSerialNumber))^ := #0;

    Result := trim(StrPas(PansiChar(@sSerialNumber)));

  end;
end;