int lm_get_lease_handles(struct lm *lm, struct lease_handle ***lease_handles);
int lm_lease_grant(struct lm *lm, struct lease_handle *lease_handle);
int lm_get_lease_handles(struct lm *lm, struct lease_handle ***lease_handles);
int lm_lease_grant(struct lm *lm, struct lease_handle *lease_handle);