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