private static extern bool DeviceIoControl(
SafeFileHandle hDevice,
uint dwIoControlCode,
IntPtr lpInBuffer,
uint nInBufferSize,
ref VolumeDiskExtents lpOutBuffer,
uint nOutBufferSize,
out uint lpBytesReturned,
IntPtr lpOverlapped);
/// <summary>
/// Gets the device ID by drive letter.
/// </summary>
/// <param name="driveLetter">A valid drive letter.</param>
/// <returns>The device ID.</returns>
/// <exception cref="DetectionFailedException"></exception>
/// <exception cref="ArgumentNullException"></exception>
/// <exception cref="ArgumentException"></exception>
private static int GetDiskId(char driveLetter)
{
var di = new DriveInfo(driveLetter.ToString());
if (di.DriveType != DriveType.Fixed)
{
throw new DetectionFailedException(string.Format("This drive is not fixed drive: {0}", driveLetter));
}
var sDrive = "\\\\.\\" + driveLetter + ":";
var hDrive = CreateFileW(
sDrive,
0, // No access to drive
FileShareRead | FileShareWrite,
IntPtr.Zero,
OpenExisting,
FileAttributeNormal,
IntPtr.Zero);
if (hDrive == null || hDrive.IsInvalid)
{
throw new DetectionFailedException(string.Format("Could not detect Disk Id of {0}",
driveLetter));
}
var ioctlVolumeGetVolumeDiskExtents = CTL_CODE(
IoctlVolumeBase, 0,
MethodBuffered, FileAnyAccess); // From winioctl.h
var queryDiskExtents =
new VolumeDiskExtents();
uint returnedQueryDiskExtentsSize;
var queryDiskExtentsResult = DeviceIoControl(
hDrive,
ioctlVolumeGetVolumeDiskExtents,
IntPtr.Zero,
0,
ref queryDiskExtents,
(uint)Marshal.SizeOf(queryDiskExtents),
out returnedQueryDiskExtentsSize,
IntPtr.Zero);
hDrive.Close();
if (queryDiskExtentsResult == false ||
queryDiskExtents.Extents.Length != 1)
{
throw new DetectionFailedException(string.Format("Could not detect Disk Id of {0}",
driveLetter));
}
return((int)queryDiskExtents.Extents[0].DiskNumber);
}
private static int GetDiskNumber(string drive)
{
var diskNumber = -1;
var deviceName = GetDeviceName(drive);
if (deviceName != null)
{
using (var vde = new VolumeDiskExtents())
{
if (vde.Load(deviceName))
{
var diskExtents = vde.GetDiskExtents();
if (diskExtents.Count == 1)
{
diskNumber = diskExtents[0].DiskNumber;
}
}
}
}
return(diskNumber);
}
/// <summary>
/// Gets the device ID by drive letter.
/// </summary>
/// <param name="driveLetter">A valid drive letter.</param>
/// <returns>The device ID.</returns>
/// <exception cref="DetectionFailedException"></exception>
/// <exception cref="ArgumentNullException"></exception>
/// <exception cref="ArgumentException"></exception>
private static int GetDiskId(char driveLetter)
{
var di = new DriveInfo(driveLetter.ToString());
if (di.DriveType != DriveType.Fixed)
{
throw new DetectionFailedException(string.Format("This drive is not fixed drive: {0}", driveLetter));
}
var sDrive = "\\\\.\\" + driveLetter + ":";
var hDrive = CreateFileW(
sDrive,
0, // No access to drive
FileShareRead | FileShareWrite,
IntPtr.Zero,
OpenExisting,
FileAttributeNormal,
IntPtr.Zero);
if (hDrive == null || hDrive.IsInvalid)
{
throw new DetectionFailedException(string.Format("Could not detect Disk Id of {0}",
driveLetter));
}
var ioctlVolumeGetVolumeDiskExtents = CTL_CODE(
IoctlVolumeBase, 0,
MethodBuffered, FileAnyAccess); // From winioctl.h
var queryDiskExtents =
new VolumeDiskExtents();
uint returnedQueryDiskExtentsSize;
var queryDiskExtentsResult = DeviceIoControl(
hDrive,
ioctlVolumeGetVolumeDiskExtents,
IntPtr.Zero,
0,
ref queryDiskExtents,
(uint) Marshal.SizeOf(queryDiskExtents),
out returnedQueryDiskExtentsSize,
IntPtr.Zero);
hDrive.Close();
if (queryDiskExtentsResult == false ||
queryDiskExtents.Extents.Length != 1)
{
throw new DetectionFailedException(string.Format("Could not detect Disk Id of {0}",
driveLetter));
}
return (int) queryDiskExtents.Extents[0].DiskNumber;
}
private static extern bool DeviceIoControl(
SafeFileHandle hDevice,
uint dwIoControlCode,
IntPtr lpInBuffer,
uint nInBufferSize,
ref VolumeDiskExtents lpOutBuffer,
uint nOutBufferSize,
out uint lpBytesReturned,
IntPtr lpOverlapped);
