@ stdcall FltRegisterFilter(ptr ptr ptr)
 @ stdcall FltUnregisterFilter(ptr)
 @ stdcall FltCloseCommunicationPort(ptr)
 @ stdcall FltStartFiltering(ptr)
 @ stdcall FltCreateCommunicationPort(ptr ptr ptr ptr ptr ptr ptr long)
 @ stdcall FltBuildDefaultSecurityDescriptor(ptr long)
 @ stdcall FltFreeSecurityDescriptor(ptr)
 @ stdcall FltGetDiskDeviceObject(ptr ptr)
 @ stdcall FltGetVolumeProperties(ptr ptr long ptr)
 @ stdcall FltObjectDereference(ptr)
 @ stdcall FltSendMessage(ptr ptr ptr long ptr ptr ptr)
 @ stdcall FltEnumerateVolumes(ptr ptr long ptr)