internal Native.STORAGE_DEVICE_NUMBER GetDeviceNumber(string devicePath)
{
IntPtr hFile = Native.CreateFile(devicePath.TrimEnd('\\'), 0, 0, IntPtr.Zero, Native.OPEN_EXISTING, 0, IntPtr.Zero);
if (hFile.ToInt32() == Native.INVALID_HANDLE_VALUE)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
int bytesReturned;
Native.STORAGE_DEVICE_NUMBER storageDeviceNumber = new Native.STORAGE_DEVICE_NUMBER();
int size = Marshal.SizeOf(storageDeviceNumber);
IntPtr buffer = Marshal.AllocHGlobal(size);
try
{
if (!Native.DeviceIoControl(hFile, Native.IOCTL_STORAGE_GET_DEVICE_NUMBER, IntPtr.Zero, 0, buffer, size, out bytesReturned, IntPtr.Zero))
{
// do nothing here on purpose
}
}
finally
{
Native.CloseHandle(hFile);
}
if (bytesReturned > 0)
{
storageDeviceNumber = (Native.STORAGE_DEVICE_NUMBER)Marshal.PtrToStructure(buffer, typeof(Native.STORAGE_DEVICE_NUMBER));
}
Marshal.FreeHGlobal(buffer);
return(storageDeviceNumber);
}
private int GetDiskNumber()
{
// Find disks
SafeFileHandle hFile = Native.CreateFile(Path, 0, Native.FILE_SHARE_READ | Native.FILE_SHARE_WRITE, IntPtr.Zero, Native.OPEN_EXISTING, 0, IntPtr.Zero);
if (hFile.IsInvalid)
{
Exception ex = Marshal.GetExceptionForHR(Marshal.GetHRForLastWin32Error());
Logger.Log(LogLevel.Error, ex);
throw ex;
}
using (hFile)
{
Native.STORAGE_DEVICE_NUMBER diskNumber = GetDiskNumber(hFile);
return(diskNumber.DeviceNumber);
}
}
