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 }