_IOP_IRP_EXTENSION

//0x28 bytes (sizeof) struct _IOP_IRP_EXTENSION { union { USHORT ExtensionFlags; //0x0 struct { USHORT Allocated:1; //0x0 USHORT PropagateId:1; //0x0 USHORT SpareBits:14; //0x0 }; }; USHORT TypesAllocated; //0x2 UCHAR GenericExtension[4]; //0x4 VOID* VerifierContext; //0x8 struct _GUID ActivityId; //0xc union { union _LARGE_INTEGER Timestamp; //0x1c ULONG ZeroingOffset; //0x1c struct { struct _IO_IRP_EXT_TRACK_OFFSET_HEADER* FsTrackOffsetBlob; //0x1c LONGLONG FsTrackedOffset; //0x20 }; }; };