_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 */
    struct _IO_CLIENT_EXTENSION* ClientDriverExtension;/* 0x14  4 */
};
/* source: Windows 2000 RC2 DDK Alpha libcntpr.lib CodeView type records; build 2128 per the DDK's ntverp.h */