 
        // ntddk.h
typedef struct _IMAGE_INFO_EX {
  SIZE_T              Size;
  IMAGE_INFO          ImageInfo;
  struct _FILE_OBJECT *FileObject;
} IMAGE_INFO_EX, *PIMAGE_INFO_EX;
View the official Windows Driver Kit DDI referenceNo description available.
IMAGE_INFO_EX is the larger, extended version of the IMAGE_INFO load image information structure.
SizeSpecifies the size, in bytes, of the IMAGE_INFO_EX structure.
ImageInfoAn IMAGE_INFO structure that specifies load image information.
FileObjectPointer to the file object of the backing file for the image. The driver can take a reference to this object or use it for other operations.
If the ExtendedInfoPresent flag is set in the IMAGE_INFO structure, the load image information is part of IMAGE_INFO_EX. In this case, the load-image notify routine can use the CONTAINING_RECORD macro (in miniport.h) to obtain the base address of the IMAGE_INFO_EX structure.