Metadatacopystruct _IO_IRP_EXT_TRACK_OFFSET_HEADER { unsigned short Validation;/* 0x0 2 */ unsigned short Flags;/* 0x2 2 */ void (*TrackedOffsetCallback)(struct _IO_IRP_EXT_TRACK_OFFSET_HEADER*, struct _IO_IRP_EXT_TRACK_OFFSET_HEADER*, __int64);/* 0x4 4 */};