__try
    {
        switch (DriverInformationClass)
        {
            // Basic information such as flags, driver base and driver size.
            case DriverBasicInformation:
            {
                if (DriverInformationLength == sizeof(DRIVER_BASIC_INFORMATION))
                {
                    PDRIVER_BASIC_INFORMATION basicInfo;

                    basicInfo = (PDRIVER_BASIC_INFORMATION)DriverInformation;
                    basicInfo->Flags = driverObject->Flags;
                    basicInfo->DriverStart = driverObject->DriverStart;
                    basicInfo->DriverSize = driverObject->DriverSize;
                }
                else
                {
                    status = STATUS_INFO_LENGTH_MISMATCH;
                }

                if (ReturnLength)
                    *ReturnLength = sizeof(DRIVER_BASIC_INFORMATION);
            }
            break;

            // The name of the driver - e.g. \Driver\Null.
            case DriverNameInformation:
            {
                if (DriverInformation)
                {
                    /* Check buffer length. */
                    if (sizeof(UNICODE_STRING) + driverObject->DriverName.Length <=
                        DriverInformationLength)
                    {
                        KphpCopyInfoUnicodeString(
                            DriverInformation,
                            &driverObject->DriverName
                            );
                    }
                    else
                    {
                        status = STATUS_BUFFER_TOO_SMALL;
                    }
                }

                if (ReturnLength)
                    *ReturnLength = sizeof(UNICODE_STRING) + driverObject->DriverName.Length;
            }
            break;

            // The name of the driver's service key - e.g. \REGISTRY\...
            case DriverServiceKeyNameInformation:
            {
                if (driverObject->DriverExtension)
                {
                    if (DriverInformation)
                    {
                        if (sizeof(UNICODE_STRING) +
                            driverObject->DriverExtension->ServiceKeyName.Length <=
                            DriverInformationLength)
                        {
                            KphpCopyInfoUnicodeString(
                                DriverInformation,
                                &driverObject->DriverExtension->ServiceKeyName
                                );
                        }
                        else
                        {
                            status = STATUS_BUFFER_TOO_SMALL;
                        }
                    }

                    if (ReturnLength)
                    {
                        *ReturnLength = sizeof(UNICODE_STRING) +
                            driverObject->DriverExtension->ServiceKeyName.Length;
                    }
                }
                else
                {
                    if (DriverInformation)
                    {
                        if (sizeof(UNICODE_STRING) <= DriverInformationLength)
                        {
                            // Zero the information buffer.
                            KphpCopyInfoUnicodeString(
                                DriverInformation,
                                NULL
                                );
                        }
                        else
                        {
                            status = STATUS_BUFFER_TOO_SMALL;
                        }
                    }

                    if (ReturnLength)
                        *ReturnLength = sizeof(UNICODE_STRING);
                }
            }
            break;

            default:
            {
                status = STATUS_INVALID_INFO_CLASS;
            }
        }
    }
    __except (EXCEPTION_EXECUTE_HANDLER)
    {
        status = GetExceptionCode();
    }