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 "qapi/qmp-core.h"
  16
  17 static QTAILQ_HEAD(QmpCommandList, QmpCommand) qmp_commands =
  18     QTAILQ_HEAD_INITIALIZER(qmp_commands);
  19
  20 void qmp_register_command(const char *name, QmpCommandFunc *fn,
  21                           QmpCommandOptions options)
  22 {
  23     QmpCommand *cmd = g_malloc0(sizeof(*cmd));
  24
  25     cmd->name = name;
  26     cmd->type = QCT_NORMAL;
  27     cmd->fn = fn;
  28     cmd->enabled = true;
  29     cmd->options = options;
  30     QTAILQ_INSERT_TAIL(&qmp_commands, cmd, node);
  31 }
  32
  33 QmpCommand *qmp_find_command(const char *name)
  34 {
  35     QmpCommand *cmd;
  36
  37     QTAILQ_FOREACH(cmd, &qmp_commands, node) {
  38         if (strcmp(cmd->name, name) == 0) {
  39             return cmd;
  40         }
  41     }
  42     return NULL;
  43 }
  44
  45 static void qmp_toggle_command(const char *name, bool enabled)
  46 {
  47     QmpCommand *cmd;
  48
  49     QTAILQ_FOREACH(cmd, &qmp_commands, node) {
  50         if (strcmp(cmd->name, name) == 0) {
  51             cmd->enabled = enabled;
  52             return;
  53         }
  54     }
  55 }
  56
  57 void qmp_disable_command(const char *name)
  58 {
  59     qmp_toggle_command(name, false);
  60 }
  61
  62 void qmp_enable_command(const char *name)
  63 {
  64     qmp_toggle_command(name, true);
  65 }
  66
  67 bool qmp_command_is_enabled(const char *name)
  68 {
  69     QmpCommand *cmd;
  70
  71     QTAILQ_FOREACH(cmd, &qmp_commands, node) {
  72         if (strcmp(cmd->name, name) == 0) {
  73             return cmd->enabled;
  74         }
  75     }
  76
  77     return false;
  78 }
  79
  80 char **qmp_get_command_list(void)
  81 {
  82     QmpCommand *cmd;
  83     int count = 1;
  84     char **list_head, **list;
  85
  86     QTAILQ_FOREACH(cmd, &qmp_commands, node) {
  87         count++;
  88     }
  89
  90     list_head = list = g_malloc0(count * sizeof(char *));
  91
  92     QTAILQ_FOREACH(cmd, &qmp_commands, node) {
  93         *list = strdup(cmd->name);
  94         list++;
  95     }
  96
  97     return list_head;
  98 }