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