discover: implement default booting
[petitboot] / discover / device-handler.c
index 9b2ef3df4d94209c92166dadf1f07ca7d295ec81..f1632f0fe10989a5b48668920fc58473e7a46108 100644 (file)
@@ -30,6 +30,10 @@ struct device_handler {
        struct discover_device  **devices;
        unsigned int            n_devices;
 
+       struct waitset          *waitset;
+       struct waiter           *timeout_waiter;
+
+       struct discover_boot_option *default_boot_option;
        struct list             unresolved_boot_options;
 };
 
@@ -176,6 +180,7 @@ void device_handler_destroy(struct device_handler *handler)
  * to keep struct device_handler opaque. */
 struct device_handler *device_handler_init(
                struct discover_server *server __attribute__((unused)),
+               struct waitset *waitset __attribute__((unused)),
                int dry_run __attribute__((unused)))
 {
        struct device_handler *handler;
@@ -274,7 +279,7 @@ static int umount_device(struct discover_device *dev)
 }
 
 struct device_handler *device_handler_init(struct discover_server *server,
-               int dry_run)
+               struct waitset *waitset, int dry_run)
 {
        struct device_handler *handler;
 
@@ -282,7 +287,9 @@ struct device_handler *device_handler_init(struct discover_server *server,
        handler->devices = NULL;
        handler->n_devices = 0;
        handler->server = server;
+       handler->waitset = waitset;
        handler->dry_run = dry_run;
+       handler->default_boot_option = NULL;
        list_init(&handler->unresolved_boot_options);
 
        /* set up our mount point base */
@@ -373,6 +380,37 @@ static void device_handler_remove(struct device_handler *handler,
        talloc_free(device);
 }
 
+static void boot_status(void *arg, struct boot_status *status)
+{
+       struct device_handler *handler = arg;
+
+       discover_server_notify_boot_status(handler->server, status);
+}
+
+static int default_timeout(void *arg)
+{
+       struct device_handler *handler = arg;
+
+       if (!handler->default_boot_option)
+               return 0;
+
+       boot(handler, handler->default_boot_option, NULL,
+                       handler->dry_run, boot_status, handler);
+       return 0;
+}
+
+static void set_default(struct device_handler *handler,
+               struct discover_boot_option *opt)
+{
+       if (handler->default_boot_option)
+               return;
+
+       handler->default_boot_option = opt;
+       handler->timeout_waiter = waiter_register_timeout(handler->waitset,
+                                       DEFAULT_BOOT_TIMEOUT_SEC * 1000,
+                                       default_timeout, handler);
+}
+
 static bool resource_is_resolved(struct resource *res)
 {
        return !res || res->resolved;
@@ -412,7 +450,8 @@ static bool boot_option_resolve(struct discover_boot_option *opt,
                resource_resolve(opt->icon, "icon", opt, handler);
 }
 
-static void boot_option_finalise(struct discover_boot_option *opt)
+static void boot_option_finalise(struct device_handler *handler,
+               struct discover_boot_option *opt)
 {
        assert(boot_option_is_resolved(opt));
 
@@ -430,6 +469,9 @@ static void boot_option_finalise(struct discover_boot_option *opt)
                opt->option->icon_file = opt->icon->url->full;
 
        opt->option->device_id = opt->device->device->id;
+
+       if (opt->option->is_default)
+               set_default(handler, opt);
 }
 
 static void process_boot_option_queue(struct device_handler *handler)
@@ -450,7 +492,7 @@ static void process_boot_option_queue(struct device_handler *handler)
                list_remove(&opt->list);
                list_add_tail(&opt->device->boot_options, &opt->list);
                talloc_steal(opt->device, opt);
-               boot_option_finalise(opt);
+               boot_option_finalise(handler, opt);
                discover_server_notify_boot_option_add(handler->server,
                                                        opt->option);
        }
@@ -502,7 +544,7 @@ static void context_commit(struct device_handler *handler,
                                        opt->option->id);
                        list_add_tail(&dev->boot_options, &opt->list);
                        talloc_steal(dev, opt);
-                       boot_option_finalise(opt);
+                       boot_option_finalise(handler, opt);
                        discover_server_notify_boot_option_add(handler->server,
                                                                opt->option);
                } else {
@@ -704,13 +746,6 @@ int device_handler_event(struct device_handler *handler,
        return handlers[event->type][event->action](handler, event);
 }
 
-static void boot_status(void *arg, struct boot_status *status)
-{
-       struct device_handler *handler = arg;
-
-       discover_server_notify_boot_status(handler->server, status);
-}
-
 static struct discover_boot_option *find_boot_option_by_id(
                struct device_handler *handler, const char *id)
 {