EFI_STATUS FileOpen(IN EFI_FILE *This, OUT EFI_FILE **NewHandle, IN CHAR16 *FileName, IN UINT64 OpenMode, IN UINT64 Attributes)
EFI_STATUS FileSetPosition(IN EFI_FILE *File, IN UINT64 Position)
EFI_STATUS FileClose(IN EFI_FILE *This)
EFI_STATUS FileSetInfo(IN EFI_FILE *This, IN EFI_GUID *InformationType, IN UINTN BufferSize, IN VOID *Buffer)
EFI_STATUS FileDelete(IN EFI_FILE *This)
EFI_STATUS FileRead(IN EFI_FILE *This, IN OUT UINTN *BufferSize, OUT VOID *Buffer)
EFI_STATUS FileGetPosition(IN EFI_FILE *File, OUT UINT64 *Position)
EFI_STATUS FileGetInfo(IN EFI_FILE *This, IN EFI_GUID *InformationType, IN OUT UINTN *BufferSize, OUT VOID *Buffer)
EFI_STATUS FileWrite(IN EFI_FILE *This, IN OUT UINTN *BufferSize, IN VOID *Buffer)