+
+struct discover_client* discover_client_init(struct waitset *waitset,
+ const struct discover_client_ops *ops, void *cb_arg)
+{
+ struct discover_client *client;
+ struct sockaddr_un addr;
+
+ client = talloc(NULL, struct discover_client);
+ if (!client)
+ return NULL;
+
+ memcpy(&client->ops, ops, sizeof(client->ops));
+ client->ops.cb_arg = cb_arg;
+
+ client->fd = socket(AF_UNIX, SOCK_STREAM, 0);
+ if (client->fd < 0) {
+ pb_log("%s: socket: %s\n", __func__, strerror(errno));
+ goto out_err;
+ }
+
+ talloc_set_destructor(client, discover_client_destructor);
+
+ client->n_devices = 0;
+ client->devices = NULL;
+
+ addr.sun_family = AF_UNIX;
+ strcpy(addr.sun_path, PB_SOCKET_PATH);
+
+ if (connect(client->fd, (struct sockaddr *)&addr, sizeof(addr))) {
+ pb_log("%s: connect: %s\n", __func__, strerror(errno));
+ goto out_err;
+ }
+
+ waiter_register_io(waitset, client->fd, WAIT_IN,
+ discover_client_process, client);
+
+ return client;
+
+out_err:
+ talloc_free(client);
+ return NULL;
+}
+
+/* accessors for discovered devices */
+int discover_client_device_count(struct discover_client *client)
+{
+ return client->n_devices;
+}
+
+struct device *discover_client_get_device(struct discover_client *client,
+ int index)
+{
+ if (index < 0 || index >= client->n_devices)
+ return NULL;
+
+ return client->devices[index];
+}
+
+static void create_boot_command(struct boot_command *command,
+ const struct device *device __attribute__((unused)),
+ const struct boot_option *boot_option,
+ const struct pb_boot_data *data)
+{
+ command->option_id = boot_option ? boot_option->id : NULL;
+ command->boot_image_file = data->image;
+ command->initrd_file = data->initrd;
+ command->dtb_file = data->dtb;
+ command->boot_args = data->args;
+}
+
+int discover_client_boot(struct discover_client *client,
+ const struct device *device,
+ const struct boot_option *boot_option,
+ const struct pb_boot_data *data)
+{
+ struct pb_protocol_message *message;
+ struct boot_command boot_command;
+ int len, rc;
+
+ create_boot_command(&boot_command, device, boot_option, data);
+
+ len = pb_protocol_boot_len(&boot_command);
+
+ message = pb_protocol_create_message(client,
+ PB_PROTOCOL_ACTION_BOOT, len);
+
+ if (!message)
+ return -1;
+
+ pb_protocol_serialise_boot_command(&boot_command,
+ message->payload, len);
+
+ rc = pb_protocol_write_message(client->fd, message);
+
+ return rc;
+}
+
+int discover_client_cancel_default(struct discover_client *client)
+{
+ struct pb_protocol_message *message;
+
+ message = pb_protocol_create_message(client,
+ PB_PROTOCOL_ACTION_CANCEL_DEFAULT, 0);
+
+ if (!message)
+ return -1;
+
+ return pb_protocol_write_message(client->fd, message);
+}
+
+int discover_client_send_reinit(struct discover_client *client)
+{
+ struct pb_protocol_message *message;
+
+ message = pb_protocol_create_message(client,
+ PB_PROTOCOL_ACTION_REINIT, 0);
+
+ if (!message)
+ return -1;
+
+ return pb_protocol_write_message(client->fd, message);
+}
+
+int discover_client_send_config(struct discover_client *client,
+ struct config *config)
+{
+ struct pb_protocol_message *message;
+ int len;
+
+ len = pb_protocol_config_len(config);
+
+ message = pb_protocol_create_message(client,
+ PB_PROTOCOL_ACTION_CONFIG, len);
+ if (!message)
+ return -1;
+
+ pb_protocol_serialise_config(config, message->payload, len);
+
+ return pb_protocol_write_message(client->fd, message);
+}
+
+int discover_client_send_url(struct discover_client *client,
+ char *url)
+{
+ struct pb_protocol_message *message;
+ int len;
+
+ len = pb_protocol_url_len(url);
+
+ message = pb_protocol_create_message(client,
+ PB_PROTOCOL_ACTION_ADD_URL, len);
+ if (!message)
+ return -1;
+
+ pb_protocol_serialise_url(url, message->payload, len);
+
+ return pb_protocol_write_message(client->fd, message);
+}