}
        }
        return null;
    }

    private ExcludeSpec tryGroupSetUnion(GroupSetExclude left, ExcludeSpec right) {
        Set<String> leftGroups = left.getGroups();
        if (right instanceof ModuleIdExclude) {
            ModuleIdExclude mie = (ModuleIdExclude) right;
            if (leftGroups.contains(mie.getModuleId().getGroup())) {
                return left;

		tokenErrorf(secret, "not marked %s=true.", bootstrapapi.BootstrapTokenUsageAuthentication)
		return nil, false, nil
	}

	groups, err := bootstrapsecretutil.GetGroups(secret)
	if err != nil {
		tokenErrorf(secret, "has invalid value for key %s: %v.", bootstrapapi.BootstrapTokenExtraGroupsKey, err)
		return nil, false, nil
	}

	return &authenticator.Response{

//sys	bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
//sys	connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
//sysnb	getgroups(n int, list *_Gid_t) (nn int, err error)
//sys	getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
//sys	setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)

	case flowcontrol.SubjectKindGroup:
		if subject.Group == nil {
			return false
		}
		seek := subject.Group.Name
		if seek == "*" {
			return true
		}
		for _, userGroup := range user.GetGroups() {
			if userGroup == seek {
				return true
			}
		}
		return false
	case flowcontrol.SubjectKindServiceAccount:
		if subject.ServiceAccount == nil {
			return false
		}

		u, hasUser := request.UserFrom(ctx)
		if requestInfo.APIGroup == "" && requestInfo.Resource == "namespaces" &&
			requestInfo.Verb == "create" && hasUser &&
			u.GetName() == user.APIServerUser && contains(u.GetGroups(), user.SystemPrivilegedGroup) {
			handler.ServeHTTP(w, req)
			return
		}
		// Allow writes to the lease API in kube-system. The storage version API depends on the

//sys	bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
//sys	connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
//sys	fstatat(fd int, path string, stat *Stat_t, flags int) (err error) = SYS_NEWFSTATAT
//sysnb	getgroups(n int, list *_Gid_t) (nn int, err error)
//sys	getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
//sys	setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)

		return true
	}

	return len(apiAuds.Intersect(responseAudiences)) > 0
}

func isAnonymousUser(u user.Info) bool {
	if u.GetName() == user.Anonymous {
		return true
	}
	for _, group := range u.GetGroups() {
		if group == user.AllUnauthenticated {
			return true
		}
	}
	return false

		if user == nil || !hasString(r.Users, user.GetName()) {
			return false
		}
	}
	if len(r.UserGroups) > 0 {
		if user == nil {
			return false
		}
		matched := false
		for _, group := range user.GetGroups() {
			if hasString(r.UserGroups, group) {
				matched = true
				break
			}
		}
		if !matched {
			return false
		}
	}
	if len(r.Verbs) > 0 {
		if !hasString(r.Verbs, attrs.GetVerb()) {

//sys	bind(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
//sys	connect(s int, addr unsafe.Pointer, addrlen _Socklen) (err error)
//sysnb	getgroups(n int, list *_Gid_t) (nn int, err error)
//sys	getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *_Socklen) (err error)
//sys	setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) (err error)

				// that they should always get an answer.  It's a super-admin or a loopback connection.
				if currUser, ok := apirequest.UserFrom(ctx); ok {
					for _, group := range currUser.GetGroups() {
						if group == user.SystemPrivilegedGroup {
							handler.ServeHTTP(w, r)
							return
						}
					}
				}
				// We need to split this data between buckets used for throttling.