/// <summary>Проверка на существование свойства перед запросом</summary>
/// <param name="propertyId">Идентификатор свойства перед запросом</param>
/// <returns>Такое свойство существует</returns>
private Boolean IsPropertyExists(StorageAPI.STORAGE_PROPERTY_QUERY.STORAGE_PROPERTY_ID propertyId)
{
StorageAPI.STORAGE_PROPERTY_QUERY query = new StorageAPI.STORAGE_PROPERTY_QUERY();
query.QueryType = StorageAPI.STORAGE_PROPERTY_QUERY.STORAGE_QUERY_TYPE.PropertyExistsQuery;
query.PropertyId = propertyId;
return(this.Info.IoControl(Constant.IOCTL_STORAGE.QUERY_PROPERTY, query));
}
static extern bool DeviceIoControl(
SafeFileHandle hDevice,
DWORD dwIoControlCode,
ref StorageAPI.STORAGE_PROPERTY_QUERY lpInBuffer,
DWORD nInBufferSize,
out StorageAPI.STORAGE_DEVICE_ID_DESCRIPTOR lpOutBuffer,
int nOutBufferSize,
ref DWORD lpBytesReturned,
LPOVERLAPPED lpOverlapped
);
private T IoControl <T>() where T : struct
{
StorageAPI.STORAGE_PROPERTY_QUERY inParams = new StorageAPI.STORAGE_PROPERTY_QUERY();
inParams.QueryType = StorageAPI.STORAGE_PROPERTY_QUERY.STORAGE_QUERY_TYPE.PropertyStandardQuery;
inParams.PropertyId = Properties.GetPropertyId(typeof(T));
T outParams;
if (this.IsPropertyExists(inParams.PropertyId) && //Перед запросом проверяю поддержку этого свойства устройством
this.Info.IoControl <T>(Constant.IOCTL_STORAGE.QUERY_PROPERTY, inParams, out outParams))
{
return(outParams);
}
else
{
return(default(T));
}
}
// deviceId is the physical disk number, e.g. from Get-PhysicalDisk.
// Throws: System.ComponentModel.Win32Exception
public static string Get_GcePdName(string deviceId)
{
string physicalDrive = PHYSICALDRIVE + deviceId;
var hDevice = CreateFile(physicalDrive,
((uint)WinAPI.FILE_ACCESS_FLAGS.GENERIC_READ |
(uint)WinAPI.FILE_ACCESS_FLAGS.GENERIC_WRITE),
(uint)WinAPI.FILE_SHARE.READ,
IntPtr.Zero,
(uint)WinAPI.CreateDisposition.OPEN_EXISTING,
0,
IntPtr.Zero
);
if (hDevice.IsInvalid)
{
var e = new Win32Exception(Marshal.GetLastWin32Error(),
String.Format("CreateFile({0}) failed. Is the drive number valid?",
physicalDrive));
WriteDebugLine(String.Format("Error: {0}", e.ToString()));
WriteDebugLine("Please use a valid physical drive number (e.g. " +
"(Get-PhysicalDisk).DeviceId)");
throw e;
}
// https://stackoverflow.com/a/17354960/1230197
var query = new StorageAPI.STORAGE_PROPERTY_QUERY
{
PropertyId = StorageAPI.STORAGE_PROPERTY_QUERY.STORAGE_PROPERTY_ID.StorageDeviceIdProperty, // page 83
QueryType = StorageAPI.STORAGE_PROPERTY_QUERY.STORAGE_QUERY_TYPE.PropertyStandardQuery
};
var qsize = (uint)Marshal.SizeOf(query);
// https://stackoverflow.com/a/2069456/1230197
var result = default(StorageAPI.STORAGE_DEVICE_ID_DESCRIPTOR);
var rsize = Marshal.SizeOf(result);
uint written = 0;
bool ok = DeviceIoControl(hDevice, IOCTL_STORAGE_QUERY_PROPERTY,
ref query, qsize, out result, rsize, ref written,
IntPtr.Zero);
if (!ok)
{
var e = new Win32Exception(Marshal.GetLastWin32Error(),
String.Format("DeviceIoControl({0}) failed", physicalDrive));
WriteDebugLine(String.Format("Error: {0}", e.ToString()));
hDevice.Close();
throw e;
}
uint numIdentifiers = result.NumberOfIdentifiers;
WriteDebugLine(String.Format("numIdentifiers: {0}", numIdentifiers));
int identifierBufferStart = 0;
for (int i = 0; i < numIdentifiers; ++i)
{
// Example:
// https://docs.microsoft.com/en-us/dotnet/api/system.runtime.interopservices.marshal.copy?view=netframework-4.7.2#System_Runtime_InteropServices_Marshal_Copy_System_Byte___System_Int32_System_IntPtr_System_Int32_.
// We don't know exactly how large this identifier is until we marshal
// the struct below. "BUFFER_SIZE" is used by
// STORAGE_DEVICE_ID_DESCRIPTOR for the combined size of all the
// identifiers so it's an upper bound on the size of this one.
IntPtr storageIdentifierBuffer =
Marshal.AllocHGlobal(StorageAPI.BUFFER_SIZE);
int identifiersBufferLeft =
StorageAPI.BUFFER_SIZE - identifierBufferStart;
WriteDebugLine(
String.Format("getting storageIdentifier {0} from memory [{1}, {2})",
i, identifierBufferStart,
identifierBufferStart + identifiersBufferLeft));
Marshal.Copy(result.Identifiers, identifierBufferStart,
storageIdentifierBuffer, identifiersBufferLeft);
var storageIdentifier =
Marshal.PtrToStructure <StorageAPI.STORAGE_IDENTIFIER>(
storageIdentifierBuffer);
WriteDebugLine(String.Format("storageIdentifier type: {0} ({1})",
storageIdentifier.Type, (int)storageIdentifier.Type));
WriteDebugLine(String.Format("storageIdentifier association: {0} ({1})",
storageIdentifier.Association, (int)storageIdentifier.Association));
WriteDebugLine(String.Format("storageIdentifier size: {0}",
(int)storageIdentifier.IdentifierSize));
if (storageIdentifier.Type == StorageAPI.STORAGE_IDENTIFIER.STORAGE_IDENTIFIER_TYPE.StorageIdTypeVendorId &&
storageIdentifier.Association == StorageAPI.STORAGE_IDENTIFIER.STORAGE_ASSOCIATION_TYPE.StorageIdAssocDevice)
{
IntPtr identifierData =
Marshal.AllocHGlobal(storageIdentifier.IdentifierSize + 1);
Marshal.Copy(storageIdentifier.Identifier, 0,
identifierData, storageIdentifier.IdentifierSize);
// Make sure to close the file handle before returning, or subsequent
// CreateFile calls for this disk or others may fail.
hDevice.Close();
string fullName = System.Text.Encoding.ASCII.GetString(
storageIdentifier.Identifier, 0, storageIdentifier.IdentifierSize);
// TODO(pjh): make this more robust? Works well enough on two Windows
// Server 2016 VMs at least.
if (!fullName.StartsWith(GOOGLEPREFIX))
{
Console.WriteLine("WARNING: unexpectedly got back disk name {0} " +
"that doesn't contain Google prefix {1}", fullName, GOOGLEPREFIX);
return(fullName);
}
return(fullName.Substring(GOOGLEPREFIX.Length));
}
// To get the start of the next identifier we need to advance
// by the length of the STORAGE_IDENTIFIER struct as well as
// the size of its variable-length data array. We subtract
// the size of the "byte[] Identifiers" member because it's
// included in the size of the data array.
//
// TODO(pjh): figure out how to make this more robust.
// Marshal.SizeOf(storageIdentifier) returns bonkers
// values when we set the SizeConst MarshalAs attribute (which
// we need to do in order to copy from the byte[] above). I
// couldn't figure out how to correctly calculate this value
// using Marshal.SizeOf, but it's 20 bytes - this value is
// fixed (for this platform at least) by the definition of
// STORAGE_IDENTIFIER in winioctl.h.
int advanceBy = 20 - sizeof(byte) + storageIdentifier.IdentifierSize;
WriteDebugLine(
String.Format("advanceBy = {0} - {1} + {2} = {3}",
20, sizeof(byte), storageIdentifier.IdentifierSize, advanceBy));
identifierBufferStart += advanceBy;
WriteDebugLine(String.Format("will read next identifier starting at {0}",
identifierBufferStart));
WriteDebugLine("");
Marshal.FreeHGlobal(storageIdentifierBuffer);
}
hDevice.Close();
return(null);
}
