Function test_buf_select

test/read-write.c:602–644

}

static int test_buf_select(const char *filename, int nonvec)
{
	struct io_uring_probe *p;
	struct io_uring ring;
	int ret, i;

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

	p = io_uring_get_probe_ring(&ring);
	if (!p || !io_uring_opcode_supported(p, IORING_OP_PROVIDE_BUFFERS)) {
		no_buf_select = 1;
		fprintf(stdout, "Buffer select not supported, skipping\n");
		return 0;
	}
	io_uring_free_probe(p);

	/*
	 * Write out data with known pattern
	 */
	for (i = 0; i < BUFFERS; i++)
		memset(vecs[i].iov_base, i, vecs[i].iov_len);

	ret = __test_io(filename, &ring, 1, 0, 0, 0, 0, 0, 1, BS, false);
	if (ret) {
		fprintf(stderr, "failed writing data\n");
		return 1;
	}

	for (i = 0; i < BUFFERS; i++)
		memset(vecs[i].iov_base, 0x55, vecs[i].iov_len);

	ret = provide_buffers_iovec(&ring, 1);
	if (ret)
		return ret;

	ret = __test_io(filename, &ring, 0, 0, 0, 0, nonvec, 1, 1, BS, false);
	io_uring_queue_exit(&ring);
	return ret;
}

static int test_rem_buf(int batch, int sqe_flags)
{