linux-user: Use safe_syscall for execve syscall
[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 <glib.h>
17 #include "qapi/qmp/dispatch.h"
18
19 static QTAILQ_HEAD(QmpCommandList, QmpCommand) qmp_commands =
20 QTAILQ_HEAD_INITIALIZER(qmp_commands);
21
22 void qmp_register_command(const char *name, QmpCommandFunc *fn,
23 QmpCommandOptions options)
24 {
25 QmpCommand *cmd = g_malloc0(sizeof(*cmd));
26
27 cmd->name = name;
28 cmd->fn = fn;
29 cmd->enabled = true;
30 cmd->options = options;
31 QTAILQ_INSERT_TAIL(&qmp_commands, cmd, node);
32 }
33
34 QmpCommand *qmp_find_command(const char *name)
35 {
36 QmpCommand *cmd;
37
38 QTAILQ_FOREACH(cmd, &qmp_commands, node) {
39 if (strcmp(cmd->name, name) == 0) {
40 return cmd;
41 }
42 }
43 return NULL;
44 }
45
46 static void qmp_toggle_command(const char *name, bool enabled)
47 {
48 QmpCommand *cmd;
49
50 QTAILQ_FOREACH(cmd, &qmp_commands, node) {
51 if (strcmp(cmd->name, name) == 0) {
52 cmd->enabled = enabled;
53 return;
54 }
55 }
56 }
57
58 void qmp_disable_command(const char *name)
59 {
60 qmp_toggle_command(name, false);
61 }
62
63 void qmp_enable_command(const char *name)
64 {
65 qmp_toggle_command(name, true);
66 }
67
68 bool qmp_command_is_enabled(const QmpCommand *cmd)
69 {
70 return cmd->enabled;
71 }
72
73 const char *qmp_command_name(const QmpCommand *cmd)
74 {
75 return cmd->name;
76 }
77
78 bool qmp_has_success_response(const QmpCommand *cmd)
79 {
80 return !(cmd->options & QCO_NO_SUCCESS_RESP);
81 }
82
83 void qmp_for_each_command(qmp_cmd_callback_fn fn, void *opaque)
84 {
85 QmpCommand *cmd;
86
87 QTAILQ_FOREACH(cmd, &qmp_commands, node) {
88 fn(cmd, opaque);
89 }
90 }