TYPE_GID
{ID_GID, TYPE_GID}
if (type == TYPE_GID)
type == TYPE_GID && (gid_t)ll != ll) {
case TYPE_GID:
} else if (type_to == TYPE_GID) {
} else if (type_from == TYPE_GID) {
else if (type_to == TYPE_GID)
if ((type_to == TYPE_UID || type_to == TYPE_GID ||