hw/arm/virt: parameter passing cleanups
[qemu.git] / qapi / qmp-registry.c
1 /*
2 * Core Definitions for QAPI/QMP Dispatch
3 *
4 * Copyright IBM, Corp. 2011
5 *
6 * Authors:
7 * Anthony Liguori <aliguori@us.ibm.com>
8 * Michael Roth <mdroth@us.ibm.com>
9 *
10 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
11 * See the COPYING.LIB file in the top-level directory.
12 *
13 */
14
15 #include "qemu/osdep.h"
16 #include "qapi/qmp/dispatch.h"
17
18 static QTAILQ_HEAD(QmpCommandList, QmpCommand) qmp_commands =
19 QTAILQ_HEAD_INITIALIZER(qmp_commands);
20
21 void qmp_register_command(const char *name, QmpCommandFunc *fn,
22 QmpCommandOptions options)
23 {
24 QmpCommand *cmd = g_malloc0(sizeof(*cmd));
25
26 cmd->name = name;
27 cmd->fn = fn;
28 cmd->enabled = true;
29 cmd->options = options;
30 QTAILQ_INSERT_TAIL(&qmp_commands, cmd, node);
31 }
32
33 void qmp_unregister_command(const char *name)
34 {
35 QmpCommand *cmd = qmp_find_command(name);
36
37 QTAILQ_REMOVE(&qmp_commands, cmd, node);
38 g_free(cmd);
39 }
40
41 QmpCommand *qmp_find_command(const char *name)
42 {
43 QmpCommand *cmd;
44
45 QTAILQ_FOREACH(cmd, &qmp_commands, node) {
46 if (strcmp(cmd->name, name) == 0) {
47 return cmd;
48 }
49 }
50 return NULL;
51 }
52
53 static void qmp_toggle_command(const char *name, bool enabled)
54 {
55 QmpCommand *cmd;
56
57 QTAILQ_FOREACH(cmd, &qmp_commands, node) {
58 if (strcmp(cmd->name, name) == 0) {
59 cmd->enabled = enabled;
60 return;
61 }
62 }
63 }
64
65 void qmp_disable_command(const char *name)
66 {
67 qmp_toggle_command(name, false);
68 }
69
70 void qmp_enable_command(const char *name)
71 {
72 qmp_toggle_command(name, true);
73 }
74
75 bool qmp_command_is_enabled(const QmpCommand *cmd)
76 {
77 return cmd->enabled;
78 }
79
80 const char *qmp_command_name(const QmpCommand *cmd)
81 {
82 return cmd->name;
83 }
84
85 bool qmp_has_success_response(const QmpCommand *cmd)
86 {
87 return !(cmd->options & QCO_NO_SUCCESS_RESP);
88 }
89
90 void qmp_for_each_command(qmp_cmd_callback_fn fn, void *opaque)
91 {
92 QmpCommand *cmd;
93
94 QTAILQ_FOREACH(cmd, &qmp_commands, node) {
95 fn(cmd, opaque);
96 }
97 }