Merge remote-tracking branch 'remotes/vivier2/tags/trivial-branch-for-5.2-pull-reques...
[qemu.git] / include / qapi / opts-visitor.h
1 /*
2 * Options Visitor
3 *
4 * Copyright Red Hat, Inc. 2012
5 *
6 * Author: Laszlo Ersek <lersek@redhat.com>
7 *
8 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
9 * See the COPYING.LIB file in the top-level directory.
10 *
11 */
12
13 #ifndef OPTS_VISITOR_H
14 #define OPTS_VISITOR_H
15
16 #include "qapi/visitor.h"
17
18 /* Inclusive upper bound on the size of any flattened range. This is a safety
19 * (= anti-annoyance) measure; wrong ranges should not cause long startup
20 * delays nor exhaust virtual memory.
21 */
22 #define OPTS_VISITOR_RANGE_MAX 65536
23
24 typedef struct OptsVisitor OptsVisitor;
25
26 /* Contrarily to qemu-option.c::parse_option_number(), OptsVisitor's "int"
27 * parser relies on strtoll() instead of strtoull(). Consequences:
28 * - string representations of negative numbers yield negative values,
29 * - values below INT64_MIN or LLONG_MIN are rejected,
30 * - values above INT64_MAX or LLONG_MAX are rejected.
31 *
32 * The Opts input visitor does not implement support for visiting QAPI
33 * alternates, numbers (other than integers), null, or arbitrary
34 * QTypes. It also requires a non-null list argument to
35 * visit_start_list().
36 */
37 Visitor *opts_visitor_new(const QemuOpts *opts);
38
39 #endif