セマフォセット

int		getsemcmwlabel(					int semid, bclabel_t *cmwlabel);
 int		semgetl(					key_t key, int nsems, int semflg, bslabel_t *senslabel);
 int		semopl(					int semid, struct sembuf *sops, size_t nsops,
 							bilable_t *inflabel);