LXR qemu/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
  18void qmp_register_command(QmpCommandList *cmds, const char *name,
  19                          QmpCommandFunc *fn, QmpCommandOptions options)
  20{
  21    QmpCommand *cmd = g_malloc0(sizeof(*cmd));
  22
  23    cmd->name = name;
  24    cmd->fn = fn;
  25    cmd->enabled = true;
  26    cmd->options = options;
  27    QTAILQ_INSERT_TAIL(cmds, cmd, node);
  28}
  29
  30void qmp_unregister_command(QmpCommandList *cmds, const char *name)
  31{
  32    QmpCommand *cmd = qmp_find_command(cmds, name);
  33
  34    QTAILQ_REMOVE(cmds, cmd, node);
  35    g_free(cmd);
  36}
  37
  38QmpCommand *qmp_find_command(QmpCommandList *cmds, const char *name)
  39{
  40    QmpCommand *cmd;
  41
  42    QTAILQ_FOREACH(cmd, cmds, node) {
  43        if (strcmp(cmd->name, name) == 0) {
  44            return cmd;
  45        }
  46    }
  47    return NULL;
  48}
  49
  50static void qmp_toggle_command(QmpCommandList *cmds, const char *name,
  51                               bool enabled)
  52{
  53    QmpCommand *cmd;
  54
  55    QTAILQ_FOREACH(cmd, cmds, node) {
  56        if (strcmp(cmd->name, name) == 0) {
  57            cmd->enabled = enabled;
  58            return;
  59        }
  60    }
  61}
  62
  63void qmp_disable_command(QmpCommandList *cmds, const char *name)
  64{
  65    qmp_toggle_command(cmds, name, false);
  66}
  67
  68void qmp_enable_command(QmpCommandList *cmds, const char *name)
  69{
  70    qmp_toggle_command(cmds, name, true);
  71}
  72
  73bool qmp_command_is_enabled(const QmpCommand *cmd)
  74{
  75    return cmd->enabled;
  76}
  77
  78const char *qmp_command_name(const QmpCommand *cmd)
  79{
  80    return cmd->name;
  81}
  82
  83bool qmp_has_success_response(const QmpCommand *cmd)
  84{
  85    return !(cmd->options & QCO_NO_SUCCESS_RESP);
  86}
  87
  88void qmp_for_each_command(QmpCommandList *cmds, qmp_cmd_callback_fn fn,
  89                          void *opaque)
  90{
  91    QmpCommand *cmd;
  92
  93    QTAILQ_FOREACH(cmd, cmds, node) {
  94        fn(cmd, opaque);
  95    }
  96}
  97