Function test_single_link_timeout_ception

test/link-timeout.c:167–231

* Test linked timeout with timeout (timeoutception) */

 * Test linked timeout with timeout (timeoutception)
 */
static int test_single_link_timeout_ception(struct io_uring *ring)
{
	struct __kernel_timespec ts1, ts2;
	struct io_uring_cqe *cqe;
	struct io_uring_sqe *sqe;
	int ret, i;

	sqe = io_uring_get_sqe(ring);
	if (!sqe) {
		printf("get sqe failed\n");
		goto err;
	}

	ts1.tv_sec = 1;
	ts1.tv_nsec = 0;
	io_uring_prep_timeout(sqe, &ts1, -1U, 0);
	sqe->flags |= IOSQE_IO_LINK;
	sqe->user_data = 1;

	sqe = io_uring_get_sqe(ring);
	if (!sqe) {
		printf("get sqe failed\n");
		goto err;
	}

	ts2.tv_sec = 2;
	ts2.tv_nsec = 0;
	io_uring_prep_link_timeout(sqe, &ts2, 0);
	sqe->user_data = 2;

	ret = io_uring_submit(ring);
	if (ret != 2) {
		printf("sqe submit failed: %d\n", ret);
		goto err;
	}

	for (i = 0; i < 2; i++) {
		ret = io_uring_wait_cqe(ring, &cqe);
		if (ret < 0) {
			printf("wait completion %d\n", ret);
			goto err;
		}
		switch (cqe->user_data) {
		case 1:
			/* newer kernels allow timeout links */
			if (cqe->res != -EINVAL && cqe->res != -ETIME) {
				fprintf(stderr, "Timeout got %d, wanted "
					"-EINVAL or -ETIME\n", cqe->res);
				goto err;
			}
			break;
		case 2:
			if (cqe->res != -ECANCELED) {
				fprintf(stderr, "Link timeout got %d, wanted -ECANCELED\n", cqe->res);
				goto err;
			}
			break;
		}