_SECURITY_QUALITY_OF_SERVICE

headersMetadatacopy
struct _SECURITY_QUALITY_OF_SERVICE {
    unsigned long Length;/* 0x0  4 */
    enum _SECURITY_IMPERSONATION_LEVEL ImpersonationLevel;/* 0x4  4 */
    unsigned char ContextTrackingMode;/* 0x8  1 */
    unsigned char EffectiveOnly;/* 0x9  1 */
};
/* computed from WINNT.H, NT 4.0 SDK */