qapi-schema: use generated marshaller for 'qmp_capabilities'

qapi'fy the 'qmp_capabilities' command, makes the command visible in
query-qmp-schema.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20160912091913.15831-3-marcandre.lureau@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

monitor.c

@@ -617,7 +617,7 @@ static void monitor_qapi_event_init(void)
     qmp_event_set_func_emit(monitor_qapi_event_queue);
 }
 
-static void qmp_capabilities(QDict *params, QObject **ret_data, Error **errp)
+void qmp_qmp_capabilities(Error **errp)
 {
     cur_mon->qmp.in_command_mode = true;
 }
@@ -3656,7 +3656,7 @@ static int monitor_can_read(void *opaque)
 static bool invalid_qmp_mode(const Monitor *mon, const mon_cmd_t *cmd,
                              Error **errp)
 {
-    bool is_cap = cmd->mhandler.cmd_new == qmp_capabilities;
+    bool is_cap = cmd->mhandler.cmd_new == qmp_marshal_qmp_capabilities;
 
     if (is_cap && mon->qmp.in_command_mode) {
         error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND,

qapi-schema.json

@@ -20,6 +20,27 @@
 # QAPI introspection
 { 'include': 'qapi/introspect.json' }
 
+##
+# @qmp_capabilities:
+#
+# Enable QMP capabilities.
+#
+# Arguments: None.
+#
+# Example:
+#
+# -> { "execute": "qmp_capabilities" }
+# <- { "return": {} }
+#
+# Notes: This command is valid exactly when first connecting: it must be
+# issued before any other command will be accepted, and will fail once the
+# monitor is accepting other commands. (see qemu docs/qmp-spec.txt)
+#
+# Since: 0.13
+#
+##
+{ 'command': 'qmp_capabilities' }
+
 ##
 # @LostTickPolicy:
 #

qmp-commands.hx

@@ -2219,7 +2219,7 @@ EQMP
         .args_type  = "",
         .params     = "",
         .help       = "enable QMP capabilities",
-        .mhandler.cmd_new = qmp_capabilities,
+        .mhandler.cmd_new = qmp_marshal_qmp_capabilities,
     },
 
 SQMP