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 void 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
  38 QmpCommand *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
  50 static 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
  63 void qmp_disable_command(QmpCommandList *cmds, const char *name)
  64 {
  65     qmp_toggle_command(cmds, name, false);
  66 }
  67
  68 void qmp_enable_command(QmpCommandList *cmds, const char *name)
  69 {
  70     qmp_toggle_command(cmds, name, true);
  71 }
  72
  73 bool qmp_command_is_enabled(const QmpCommand *cmd)
  74 {
  75     return cmd->enabled;
  76 }
  77
  78 const char *qmp_command_name(const QmpCommand *cmd)
  79 {
  80     return cmd->name;
  81 }
  82
  83 bool qmp_has_success_response(const QmpCommand *cmd)
  84 {
  85     return !(cmd->options & QCO_NO_SUCCESS_RESP);
  86 }
  87
  88 void 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 }