Function test_buf_select_short

test/read-write.c:448–493

}

static int test_buf_select_short(const char *filename, int nonvec)
{
	struct io_uring_sqe *sqe;
	struct io_uring_cqe *cqe;
	struct io_uring ring;
	int ret, i, exp_len;

	if (no_buf_select)
		return 0;

	ret = io_uring_queue_init(64, &ring, 0);
	if (ret) {
		fprintf(stderr, "ring create failed: %d\n", ret);
		return 1;
	}

	exp_len = 0;
	for (i = 0; i < 2 * BUFFERS; i++) {
		sqe = io_uring_get_sqe(&ring);
		io_uring_prep_provide_buffers(sqe, vecs[i].iov_base,
						vecs[i].iov_len / 2, 1, 1, i);
		if (!exp_len)
			exp_len = vecs[i].iov_len / 2;
	}

	ret = io_uring_submit(&ring);
	if (ret != BUFFERS * 2) {
		fprintf(stderr, "submit: %d\n", ret);
		return -1;
	}

	for (i = 0; i < BUFFERS * 2; i++) {
		ret = io_uring_wait_cqe(&ring, &cqe);
		if (cqe->res < 0) {
			fprintf(stderr, "cqe->res=%d\n", cqe->res);
			return 1;
		}
		io_uring_cqe_seen(&ring, cqe);
	}

	ret = __test_io(filename, &ring, 0, 0, 0, 0, nonvec, 1, 1, exp_len,
			false);

	io_uring_queue_exit(&ring);
	return ret;
}

static int provide_buffers_iovec(struct io_uring *ring, int bgid)
{