_Must_inspect_result_ _In_opt_ PFLT_INSTANCE _Out_ PHANDLE FileHandle
_Must_inspect_result_ _Out_ PLARGE_INTEGER FileSize
PULONG MinorVersion OPTIONAL
HANDLE FileOpen(IN PCSTR FileName, OUT PULONG FileSize OPTIONAL)
VOID FileClose(IN HANDLE FileHandle)
BOOLEAN FileLoadByHandle(IN HANDLE FileHandle, IN PVOID Location, IN ULONG FileSize, OUT PULONG BytesRead)
_Must_inspect_result_ _In_ WDFIOTARGET _In_opt_ WDFREQUEST _In_opt_ PWDF_MEMORY_DESCRIPTOR _In_opt_ PLONGLONG _In_opt_ PWDF_REQUEST_SEND_OPTIONS _Out_opt_ PULONG_PTR BytesRead