shm_find_prison
rpr = shm_find_prison(req->td->td_ucred);
rpr = shm_find_prison(td->td_ucred);
rpr = shm_find_prison(td->td_ucred);
static struct prison *shm_find_prison(struct ucred *);
if (shm_find_prison(td->td_ucred) == NULL)
rpr = shm_find_prison(td->td_ucred);
rpr = shm_find_prison(td->td_ucred);
if (shm_find_prison(td->td_ucred) == NULL)