ucred_getzoneid
if (door_ucred(&cred) != 0 || (zoneid = ucred_getzoneid(cred)) == -1) {
zoneid = ucred_getzoneid(uc);
zoneid_t uzid = ucred_getzoneid(cred);
(ucred_getzoneid(uc)) != myzone) {
(int)ucred_getzoneid(uc));
if (ucred_getzoneid(uc) != GLOBAL_ZONEID ||
zoneid = ucred_getzoneid(ucred);
extern zoneid_t ucred_getzoneid(const ucred_t *);
return (ucred_getzoneid(uc) == myzone ? 0 : -1);
} else if (ucred_getzoneid(cr) != handle->rh_zoneid) {