public static STORAGE_DEVICE_DESCRIPTOR GetDeviceDescriptor(SafeFileHandle hDevice)
{
const int StorageDeviceProperty = 0;
const int PropertyStandardQuery = 0;
uint dummy;
STORAGE_PROPERTY_QUERY storagePropertyQuery = new STORAGE_PROPERTY_QUERY();
storagePropertyQuery.PropertyId = StorageDeviceProperty;
storagePropertyQuery.QueryType = PropertyStandardQuery;
IntPtr lpInBuffer = Marshal.AllocHGlobal(Marshal.SizeOf(storagePropertyQuery));
Marshal.StructureToPtr(storagePropertyQuery, lpInBuffer, false);
STORAGE_DESCRIPTOR_HEADER storageDescriptorHeader = new STORAGE_DESCRIPTOR_HEADER();
IntPtr lpOutBuffer = Marshal.AllocHGlobal(Marshal.SizeOf(storageDescriptorHeader));
Marshal.StructureToPtr(storageDescriptorHeader, lpOutBuffer, false);
bool success = DeviceIoControl(hDevice, IOCTL_STORAGE_QUERY_PROPERTY, lpInBuffer, (uint)Marshal.SizeOf(storagePropertyQuery),
lpOutBuffer, (uint)Marshal.SizeOf(storageDescriptorHeader), out dummy, IntPtr.Zero);
if (!success)
{
int errorCode = Marshal.GetLastWin32Error();
throw new IOException("Unable to retrieve device description header, Error: " + errorCode.ToString());
}
storageDescriptorHeader = (STORAGE_DESCRIPTOR_HEADER)Marshal.PtrToStructure(lpOutBuffer, typeof(STORAGE_DESCRIPTOR_HEADER));
Marshal.FreeHGlobal(lpOutBuffer);
if ((int)storageDescriptorHeader.Size < Marshal.SizeOf(typeof(STORAGE_DEVICE_DESCRIPTOR)))
{
// Observed when using Dataram RAMDisk v4.4.0 RC36
throw new InvalidDataException("Invalid STORAGE_DEVICE_DESCRIPTOR length");
}
lpOutBuffer = Marshal.AllocHGlobal((int)storageDescriptorHeader.Size);
success = DeviceIoControl(hDevice, IOCTL_STORAGE_QUERY_PROPERTY, lpInBuffer, (uint)Marshal.SizeOf(storagePropertyQuery),
lpOutBuffer, storageDescriptorHeader.Size, out dummy, IntPtr.Zero);
if (!success)
{
int errorCode = Marshal.GetLastWin32Error();
throw new IOException("Unable to retrieve device description, Error: " + errorCode.ToString());
}
STORAGE_DEVICE_DESCRIPTOR deviceDescriptor = (STORAGE_DEVICE_DESCRIPTOR)Marshal.PtrToStructure(lpOutBuffer, typeof(STORAGE_DEVICE_DESCRIPTOR));
int rawDevicePropertiesOffset = Marshal.SizeOf(deviceDescriptor);
int rawDevicePropertiesLength = (int)storageDescriptorHeader.Size - rawDevicePropertiesOffset;
deviceDescriptor.RawDeviceProperties = new byte[rawDevicePropertiesLength];
Marshal.Copy(new IntPtr(lpOutBuffer.ToInt64() + rawDevicePropertiesOffset), deviceDescriptor.RawDeviceProperties, 0, rawDevicePropertiesLength);
Marshal.FreeHGlobal(lpOutBuffer);
Marshal.FreeHGlobal(lpInBuffer);
return(deviceDescriptor);
}
/// <summary>
/// Returns the device serial number
/// </summary>
public static string GetDeviceSerialNumber(SafeFileHandle hDevice)
{
STORAGE_DEVICE_DESCRIPTOR deviceDescriptor = GetDeviceDescriptor(hDevice);
// SerialNumberOffset = 0xFFFFFFFF means the device have no serial number
if (deviceDescriptor.SerialNumberOffset > 0 && deviceDescriptor.SerialNumberOffset != 0xFFFFFFFF)
{
int offset = (int)deviceDescriptor.SerialNumberOffset - Marshal.SizeOf(deviceDescriptor);
string serialNumber = ByteReader.ReadNullTerminatedAnsiString(deviceDescriptor.RawDeviceProperties, offset);
return(DecodeDeviceSerialNumber(serialNumber.Trim()));
}
return(String.Empty);
}
/// <summary>
/// Returns the device product ID
/// </summary>
public static string GetDeviceDescription(SafeFileHandle hDevice)
{
STORAGE_DEVICE_DESCRIPTOR deviceDescriptor = GetDeviceDescriptor(hDevice);
string description = String.Empty;
if (deviceDescriptor.VendorIdOffset > 0)
{
int offset = (int)deviceDescriptor.VendorIdOffset - Marshal.SizeOf(deviceDescriptor);
string vendor = ByteReader.ReadNullTerminatedAnsiString(deviceDescriptor.RawDeviceProperties, offset);
while (vendor.EndsWith(" ")) // Remove multiple empty space
{
vendor = vendor.Remove(vendor.Length - 1);
}
description += vendor;
}
if (deviceDescriptor.ProductIdOffset > 0)
{
int offset = (int)deviceDescriptor.ProductIdOffset - Marshal.SizeOf(deviceDescriptor);
string product = ByteReader.ReadNullTerminatedAnsiString(deviceDescriptor.RawDeviceProperties, offset);
description += product.Trim();
}
return(description);
}
