Function test_stdout_io

test/stdout.c:153–199

}

static int test_stdout_io(struct io_uring *ring)
{
	struct io_uring_cqe *cqe;
	struct io_uring_sqe *sqe;
	struct iovec vecs;
	int ret;

	vecs.iov_base = "This is a pipe test\n";
	vecs.iov_len = strlen(vecs.iov_base);

	sqe = io_uring_get_sqe(ring);
	if (!sqe) {
		fprintf(stderr, "get sqe failed\n");
		goto err;
	}
	io_uring_prep_writev(sqe, STDOUT_FILENO, &vecs, 1, 0);

	ret = io_uring_submit(ring);
	if (ret < 0) {
		fprintf(stderr, "sqe submit failed: %d\n", ret);
		goto err;
	} else if (ret < 1) {
		fprintf(stderr, "Submitted only %d\n", ret);
		goto err;
	}

	ret = io_uring_wait_cqe(ring, &cqe);
	if (ret < 0) {
		fprintf(stderr, "wait completion %d\n", ret);
		goto err;
	}
	if (cqe->res < 0) {
		fprintf(stderr, "STDOUT write error: %s\n",
				strerror(-cqe->res));
		goto err;
	}
	if (cqe->res != vecs.iov_len) {
		fprintf(stderr, "Got %d write, wanted %d\n", cqe->res,
				(int)vecs.iov_len);
		goto err;
	}
	io_uring_cqe_seen(ring, cqe);

	return 0;
err:
	return 1;
}

int main(int argc, char *argv[])
{