childok(lttng_poll_create(&cpoll_events, 1, 0) == 0, "Create valid poll set succeeds");
childok(lttng_poll_mod(NULL, infd[0], LPOLLIN) == -1, "lttng_poll_mod with invalid input returns an error");
childok(lttng_poll_mod(&cpoll_events, infd[0], LPOLLIN) == -1, "lttng_poll_mod with invalid input returns an error");
childok(lttng_poll_create(&cpoll_events, 1, 0) == 0, "Create valid poll set succeeds");
childok(lttng_poll_mod(NULL, infd[0], LPOLLIN) == -1, "lttng_poll_mod with invalid input returns an error");
childok(lttng_poll_mod(&cpoll_events, infd[0], LPOLLIN) == -1, "lttng_poll_mod with invalid input returns an error");