discover: Handle and track plugin_options

[petitboot] / discover / device-handler.c

diff --git a/discover/device-handler.c b/discover/device-handler.c
index ec4a6f611ff289ee9d4bc61182401897c41ff1ba..3ef48ada77394e2252249b4495af81c8efe94291 100644 (file)
--- a/discover/device-handler.c
+++ b/discover/device-handler.c
@@ -84,6 +84,9 @@ struct device_handler {
 
        struct list             progress;
        unsigned int            n_progress;
+
+       struct plugin_option    **plugins;
+       unsigned int            n_plugins;
 };
 
 static int mount_device(struct discover_device *dev);
@@ -126,6 +129,28 @@ const struct discover_device *device_handler_get_device(
        return handler->devices[index];
 }
 
+/**
+ * device_handler_get_plugin_count - Get the count of current handler plugins.
+ */
+int device_handler_get_plugin_count(const struct device_handler *handler)
+{
+       return handler->n_plugins;
+}
+
+/**
+ * discover_handler_get_plugin - Get a handler plugin by index.
+ */
+const struct plugin_option *device_handler_get_plugin(
+       const struct device_handler *handler, unsigned int index)
+{
+       if (index >= handler->n_plugins) {
+               assert(0 && "bad index");
+               return NULL;
+       }
+
+       return handler->plugins[index];
+}
+
 struct network *device_handler_get_network(
                const struct device_handler *handler)
 {
@@ -385,6 +410,15 @@ void device_handler_reinit(struct device_handler *handler)
        handler->ramdisks = NULL;
        handler->n_ramdisks = 0;
 
+       /* drop any known plugins */
+       for (i = 0; i < handler->n_plugins; i++)
+               talloc_free(handler->plugins[i]);
+       talloc_free(handler->plugins);
+       handler->plugins = NULL;
+       handler->n_plugins = 0;
+
+       discover_server_notify_plugins_remove(handler->server);
+
        device_handler_reinit_sources(handler);
 }
 
@@ -1408,6 +1442,36 @@ void device_handler_discover_context_commit(struct device_handler *handler,
        }
 }
 
+void device_handler_add_plugin_option(struct device_handler *handler,
+               struct plugin_option *opt)
+{
+       struct plugin_option *tmp;
+       unsigned int i;
+
+       for (i = 0; i < handler->n_plugins; i++) {
+               tmp = handler->plugins[i];
+               /* If both id and version match, ignore */
+               if (strncmp(opt->id, tmp->id, strlen(opt->id)) == 0 &&
+                               strncmp(opt->version, tmp->version,
+                                       strlen(opt->version) == 0)) {
+                       pb_log("discover: Plugin '%s' already exists, ignoring\n",
+                                       opt->id);
+                       return;
+               }
+       }
+
+       handler->plugins = talloc_realloc(handler, handler->plugins,
+                       struct plugin_option *, handler->n_plugins + 1);
+       if (!handler->plugins) {
+               pb_log("Failed to allocate memory for new plugin\n");
+               handler->n_plugins = 0;
+               return;
+       }
+
+       handler->plugins[handler->n_plugins++] = opt;
+       discover_server_notify_plugin_option_add(handler->server, opt);
+}
+
 static void device_handler_update_lang(const char *lang)
 {
        const char *cur_lang;