UIDNUMBER
attr = UIDNUMBER;
attrs[i++] = UIDNUMBER;
attrname = UIDNUMBER;
const char *pwd_attrs[] = {UID, UIDNUMBER, NULL, NULL};
const char *pwd_attrs[] = {UIDNUMBER, NULL, NULL};
(q->is_user) ? UIDNUMBER : GIDNUMBER);