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 void 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
  30 const QmpCommand *qmp_find_command(const QmpCommandList *cmds, const char *name)
  31 {
  32     QmpCommand *cmd;
  33
  34     QTAILQ_FOREACH(cmd, cmds, node) {
  35         if (strcmp(cmd->name, name) == 0) {
  36             return cmd;
  37         }
  38     }
  39     return NULL;
  40 }
  41
  42 static void qmp_toggle_command(QmpCommandList *cmds, const char *name,
  43                                bool enabled)
  44 {
  45     QmpCommand *cmd;
  46
  47     QTAILQ_FOREACH(cmd, cmds, node) {
  48         if (strcmp(cmd->name, name) == 0) {
  49             cmd->enabled = enabled;
  50             return;
  51         }
  52     }
  53 }
  54
  55 void qmp_disable_command(QmpCommandList *cmds, const char *name)
  56 {
  57     qmp_toggle_command(cmds, name, false);
  58 }
  59
  60 void qmp_enable_command(QmpCommandList *cmds, const char *name)
  61 {
  62     qmp_toggle_command(cmds, name, true);
  63 }
  64
  65 bool qmp_command_is_enabled(const QmpCommand *cmd)
  66 {
  67     return cmd->enabled;
  68 }
  69
  70 const char *qmp_command_name(const QmpCommand *cmd)
  71 {
  72     return cmd->name;
  73 }
  74
  75 bool qmp_has_success_response(const QmpCommand *cmd)
  76 {
  77     return !(cmd->options & QCO_NO_SUCCESS_RESP);
  78 }
  79
  80 void qmp_for_each_command(const QmpCommandList *cmds, qmp_cmd_callback_fn fn,
  81                           void *opaque)
  82 {
  83     const QmpCommand *cmd;
  84
  85     QTAILQ_FOREACH(cmd, cmds, node) {
  86         fn(cmd, opaque);
  87     }
  88 }