private static extern bool DeviceIoControl(
SafeFileHandle hDevice,
uint dwIoControlCode,
ref AtaIdentifyDeviceQuery lpInBuffer,
uint nInBufferSize,
ref AtaIdentifyDeviceQuery lpOutBuffer,
uint nOutBufferSize,
out uint lpBytesReturned,
IntPtr lpOverlapped);
/// <summary>
/// Check if the drive has a nominal media rotation rate.
/// </summary>
/// <param name="physicalDriveName">A valid physicalDriveName.</param>
/// <returns><c> true </c> if the drive has a media rotation rate otherwise, <c> false </c></returns>
/// <remarks>Administrative privilege is required!</remarks>
/// <exception cref="DetectionFailedException"></exception>
private static bool HasDriveNominalMediaRotationRate(string physicalDriveName)
{
var hDrive = CreateFileW(
physicalDriveName,
GenericRead | GenericWrite, // Administrative privilege is required
FileShareRead | FileShareWrite,
IntPtr.Zero,
OpenExisting,
FileAttributeNormal,
IntPtr.Zero);
if (hDrive == null || hDrive.IsInvalid)
{
throw new DetectionFailedException(string.Format("Could not detect NominalMediaRotationRate of {0}",
physicalDriveName));
}
var ioctlAtaPassThrough = CTL_CODE(
IoctlScsiBase, 0x040b, MethodBuffered,
FileReadAccess | FileWriteAccess); // From ntddscsi.h
var idQuery = new AtaIdentifyDeviceQuery {data = new ushort[256]};
idQuery.header.Length = (ushort) Marshal.SizeOf(idQuery.header);
idQuery.header.AtaFlags = (ushort) AtaFlagsDataIn;
idQuery.header.DataTransferLength =
(uint) (idQuery.data.Length*2); // Size of "data" in bytes
idQuery.header.TimeOutValue = 3; // Sec
idQuery.header.DataBufferOffset = Marshal.OffsetOf(
typeof (AtaIdentifyDeviceQuery), "data");
idQuery.header.PreviousTaskFile = new byte[8];
idQuery.header.CurrentTaskFile = new byte[8];
idQuery.header.CurrentTaskFile[6] = 0xec; // ATA IDENTIFY DEVICE
uint retvalSize;
var result = DeviceIoControl(
hDrive,
ioctlAtaPassThrough,
ref idQuery,
(uint) Marshal.SizeOf(idQuery),
ref idQuery,
(uint) Marshal.SizeOf(idQuery),
out retvalSize,
IntPtr.Zero);
hDrive.Close();
if (result == false)
{
throw new DetectionFailedException(string.Format("Could not detect NominalMediaRotationRate of {0}",
physicalDriveName));
}
// Word index of nominal media rotation rate
// (1 means non-rotate device)
const int kNominalMediaRotRateWordIndex = 217;
if (idQuery.data[kNominalMediaRotRateWordIndex] == 1)
{
return false;
}
return true;
}
private static extern bool DeviceIoControl(
SafeFileHandle hDevice,
uint dwIoControlCode,
ref AtaIdentifyDeviceQuery lpInBuffer,
uint nInBufferSize,
ref AtaIdentifyDeviceQuery lpOutBuffer,
uint nOutBufferSize,
out uint lpBytesReturned,
IntPtr lpOverlapped);
/// <summary>
/// Check if the drive has a nominal media rotation rate.
/// </summary>
/// <param name="physicalDriveName">A valid physicalDriveName.</param>
/// <returns><c> true </c> if the drive has a media rotation rate otherwise, <c> false </c></returns>
/// <remarks>Administrative privilege is required!</remarks>
/// <exception cref="DetectionFailedException"></exception>
private static bool HasDriveNominalMediaRotationRate(string physicalDriveName)
{
var hDrive = CreateFileW(
physicalDriveName,
GenericRead | GenericWrite, // Administrative privilege is required
FileShareRead | FileShareWrite,
IntPtr.Zero,
OpenExisting,
FileAttributeNormal,
IntPtr.Zero);
if (hDrive == null || hDrive.IsInvalid)
{
throw new DetectionFailedException(string.Format("Could not detect NominalMediaRotationRate of {0}",
physicalDriveName));
}
var ioctlAtaPassThrough = CTL_CODE(
IoctlScsiBase, 0x040b, MethodBuffered,
FileReadAccess | FileWriteAccess); // From ntddscsi.h
var idQuery = new AtaIdentifyDeviceQuery {
data = new ushort[256]
};
idQuery.header.Length = (ushort)Marshal.SizeOf(idQuery.header);
idQuery.header.AtaFlags = (ushort)AtaFlagsDataIn;
idQuery.header.DataTransferLength =
(uint)(idQuery.data.Length * 2); // Size of "data" in bytes
idQuery.header.TimeOutValue = 3; // Sec
idQuery.header.DataBufferOffset = Marshal.OffsetOf(
typeof(AtaIdentifyDeviceQuery), "data");
idQuery.header.PreviousTaskFile = new byte[8];
idQuery.header.CurrentTaskFile = new byte[8];
idQuery.header.CurrentTaskFile[6] = 0xec; // ATA IDENTIFY DEVICE
uint retvalSize;
var result = DeviceIoControl(
hDrive,
ioctlAtaPassThrough,
ref idQuery,
(uint)Marshal.SizeOf(idQuery),
ref idQuery,
(uint)Marshal.SizeOf(idQuery),
out retvalSize,
IntPtr.Zero);
hDrive.Close();
if (result == false)
{
throw new DetectionFailedException(string.Format("Could not detect NominalMediaRotationRate of {0}",
physicalDriveName));
}
// Word index of nominal media rotation rate
// (1 means non-rotate device)
const int kNominalMediaRotRateWordIndex = 217;
if (idQuery.data[kNominalMediaRotRateWordIndex] == 1)
{
return(false);
}
return(true);
}