GETNCNT
X(GETNCNT) X(GETPID) X(GETVAL) X(GETALL) X(GETZCNT) X(SETVAL) X(SETALL)
cmd = GETNCNT;
case GETNCNT:
case GETNCNT:
case GETNCNT:
case GETNCNT:
ATF_REQUIRE_EQ(0, semctl(semid, 0, GETNCNT));
ATF_REQUIRE_EQ(-1, semctl(-1, 0, GETNCNT));
i = semctl(sender_semid, 0, GETNCNT);