private static uint GetDiskExtents(char cDrive)
{
if (new DriveInfo(cDrive.ToString((IFormatProvider)CultureInfo.InvariantCulture)).DriveType != DriveType.Fixed)
{
Logger.Info(string.Format("The drive {0} is not fixed drive.", (object)cDrive));
}
string lpFileName = "\\\\.\\" + cDrive.ToString((IFormatProvider)CultureInfo.InvariantCulture) + ":";
SafeFileHandle fileW = SSDCheck.CreateFileW(lpFileName, 0U, 3U, IntPtr.Zero, 3U, 128U, IntPtr.Zero);
if (fileW == null || fileW.IsInvalid)
{
string errorMessage = SSDCheck.GetErrorMessage(Marshal.GetLastWin32Error());
Logger.Error("CreateFile failed for " + lpFileName + ". " + errorMessage);
throw new Exception("check the error message above");
}
uint dwIoControlCode = SSDCheck.CTL_CODE(86U, 0U, 0U, 0U);
SSDCheck.VOLUME_DISK_EXTENTS lpOutBuffer = new SSDCheck.VOLUME_DISK_EXTENTS();
int num = SSDCheck.DeviceIoControl(fileW, dwIoControlCode, IntPtr.Zero, 0U, ref lpOutBuffer, (uint)Marshal.SizeOf((object)lpOutBuffer), out uint _, IntPtr.Zero) ? 1 : 0;
fileW?.Close();
if (num == 0 || lpOutBuffer.Extents.Length != 1)
{
Logger.Error("DeviceIoControl failed to query disk extension. " + SSDCheck.GetErrorMessage(Marshal.GetLastWin32Error()));
throw new Exception("check the error message above");
}
uint diskNumber = lpOutBuffer.Extents[0].DiskNumber;
Logger.Info(string.Format("The physical drive number is: {0}", (object)diskNumber));
return(diskNumber);
}
private static extern bool DeviceIoControl(
SafeFileHandle hDevice,
uint dwIoControlCode,
IntPtr lpInBuffer,
uint nInBufferSize,
ref SSDCheck.VOLUME_DISK_EXTENTS lpOutBuffer,
uint nOutBufferSize,
out uint lpBytesReturned,
IntPtr lpOverlapped);