_DRIVER_EXTENSION

Metadatacopy
struct _DRIVER_EXTENSION {
    struct _DRIVER_OBJECT* DriverObject;/* 0x0  4 */
    long (*AddDevice)(struct _DRIVER_OBJECT*, struct _DEVICE_OBJECT**);/* 0x4  4 */
    unsigned long Count;/* 0x8  4 */
    struct _UNICODE_STRING ServiceKeyName;/* 0xc  8 */
};
/* source: NT 4.0 DDK (August 1996) MIPS LIBCNTPR.LIB CodeView type records; _EPROCESS/_ETHREAD offsets match KDEXTMIP.DLL (NT 4.0 Server CD) */