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 <glib.h>
  16 #include <string.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->type = QCT_NORMAL;
  29     cmd->fn = fn;
  30     cmd->enabled = true;
  31     cmd->options = options;
  32     QTAILQ_INSERT_TAIL(&qmp_commands, cmd, node);
  33 }
  34
  35 QmpCommand *qmp_find_command(const char *name)
  36 {
  37     QmpCommand *cmd;
  38
  39     QTAILQ_FOREACH(cmd, &qmp_commands, node) {
  40         if (strcmp(cmd->name, name) == 0) {
  41             return cmd;
  42         }
  43     }
  44     return NULL;
  45 }
  46
  47 static void qmp_toggle_command(const char *name, bool enabled)
  48 {
  49     QmpCommand *cmd;
  50
  51     QTAILQ_FOREACH(cmd, &qmp_commands, node) {
  52         if (strcmp(cmd->name, name) == 0) {
  53             cmd->enabled = enabled;
  54             return;
  55         }
  56     }
  57 }
  58
  59 void qmp_disable_command(const char *name)
  60 {
  61     qmp_toggle_command(name, false);
  62 }
  63
  64 void qmp_enable_command(const char *name)
  65 {
  66     qmp_toggle_command(name, true);
  67 }
  68
  69 bool qmp_command_is_enabled(const QmpCommand *cmd)
  70 {
  71     return cmd->enabled;
  72 }
  73
  74 const char *qmp_command_name(const QmpCommand *cmd)
  75 {
  76     return cmd->name;
  77 }
  78
  79 bool qmp_has_success_response(const QmpCommand *cmd)
  80 {
  81     return !(cmd->options & QCO_NO_SUCCESS_RESP);
  82 }
  83
  84 void qmp_for_each_command(qmp_cmd_callback_fn fn, void *opaque)
  85 {
  86     QmpCommand *cmd;
  87
  88     QTAILQ_FOREACH(cmd, &qmp_commands, node) {
  89         fn(cmd, opaque);
  90     }
  91 }