xref: /openbmc/qemu/include/qapi/opts-visitor.h (revision ddbb0d09)
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 #include "qemu/option.h"
18 
19 /* Inclusive upper bound on the size of any flattened range. This is a safety
20  * (= anti-annoyance) measure; wrong ranges should not cause long startup
21  * delays nor exhaust virtual memory.
22  */
23 #define OPTS_VISITOR_RANGE_MAX 65536
24 
25 typedef struct OptsVisitor OptsVisitor;
26 
27 /* Contrarily to qemu-option.c::parse_option_number(), OptsVisitor's "int"
28  * parser relies on strtoll() instead of strtoull(). Consequences:
29  * - string representations of negative numbers yield negative values,
30  * - values below INT64_MIN or LLONG_MIN are rejected,
31  * - values above INT64_MAX or LLONG_MAX are rejected.
32  */
33 OptsVisitor *opts_visitor_new(const QemuOpts *opts);
34 void opts_visitor_cleanup(OptsVisitor *nv);
35 Visitor *opts_get_visitor(OptsVisitor *nv);
36 
37 #endif
38