diff --git a/types/wlr_data_device_manager.c b/types/wlr_data_device_manager.c
index fb3bd901..d5a6cca9 100644
--- a/types/wlr_data_device_manager.c
+++ b/types/wlr_data_device_manager.c
@@ -7,15 +7,16 @@
 #include <wlr/types/wlr_data_source.h>
 #include <wlr/types/wlr_seat.h>
 
-static void resource_destroy(struct wl_client *client, struct wl_resource *resource) {
+static void resource_destroy(struct wl_client *client,
+		struct wl_resource *resource) {
 	wl_resource_destroy(resource);
 }
 
-static void wl_cb_data_device_start_drag(struct wl_client *client,
-		struct wl_resource *res, struct wl_resource *src_res,
+static void data_device_start_drag(struct wl_client *client,
+		struct wl_resource *res, struct wl_resource *source_resource,
 		struct wl_resource *origin_res, struct wl_resource *icon_res,
 		uint32_t serial) {
-	wlr_log(L_DEBUG, "implement data_device:start_drag");
+	wlr_log(L_DEBUG, "TODO: implement data_device:start_drag");
 
 	// Will probably look like this:
 	// struct wlr_seat_handle *handle = wl_resource_get_user_data(res);
@@ -29,68 +30,75 @@ static void wl_cb_data_device_start_drag(struct wl_client *client,
 	// 	origin, icon); // will set surface roles and emit signal for user
 }
 
-static void wl_cb_data_device_set_selection(struct wl_client *client,
-		struct wl_resource *res, struct wl_resource *src_res,
+static void data_device_set_selection(struct wl_client *client,
+		struct wl_resource *resource, struct wl_resource *source_resource,
 		uint32_t serial) {
 	// TODO: serial validation
-	struct wlr_seat_handle *handle = wl_resource_get_user_data(res);
+	struct wlr_seat_handle *handle = wl_resource_get_user_data(resource);
 	struct wlr_data_device *device = handle->wlr_seat->data_device;
-	struct wlr_data_source *src = wl_resource_get_user_data(src_res);
-	wlr_data_device_set_selection(device, src);
+	struct wlr_data_source *source = wl_resource_get_user_data(source_resource);
+	wlr_data_device_set_selection(device, source);
 }
 
 static struct wl_data_device_interface data_device_impl = {
-	.start_drag = wl_cb_data_device_start_drag,
-	.set_selection = wl_cb_data_device_set_selection,
+	.start_drag = data_device_start_drag,
+	.set_selection = data_device_set_selection,
 	.release = resource_destroy
 };
 
-static void data_device_selection_destroy(struct wl_listener *listener, void *data) {
-	struct wlr_data_device *device = wl_container_of(listener, device, selection_destroyed);
+static void data_device_selection_destroy(struct wl_listener *listener,
+		void *data) {
+	struct wlr_data_device *device =
+		wl_container_of(listener, device, selection_destroyed);
 	assert(data == device->selection);
 	device->selection = NULL; // make sure no cancel is sent
 	wlr_data_device_set_selection(device, NULL);
 }
 
-static struct wlr_data_device *seat_ensure_data_device(struct wlr_data_device_manager *manager,
-		struct wlr_seat *seat) {
+static struct wlr_data_device *seat_ensure_data_device(
+		struct wlr_data_device_manager *manager, struct wlr_seat *seat) {
 	if (seat->data_device) {
 		return seat->data_device;
 	}
 
-	if (!(seat->data_device = calloc(1, sizeof(*seat->data_device)))) {
+	seat->data_device = calloc(1, sizeof(*seat->data_device));
+	if (!seat->data_device) {
 		wlr_log(L_ERROR, "Failed to allocate wlr_data_device");
 		return NULL;
 	}
 
 	seat->data_device->seat = seat;
 	wl_signal_init(&seat->data_device->events.selection_change);
-	seat->data_device->selection_destroyed.notify = data_device_selection_destroy;
+	seat->data_device->selection_destroyed.notify =
+		data_device_selection_destroy;
 	return seat->data_device;
 }
 
-static void data_device_destroy(struct wl_resource *res) {
-	struct wlr_seat_handle *handle = wl_resource_get_user_data(res);
+static void data_device_destroy(struct wl_resource *resource) {
+	struct wlr_seat_handle *handle = wl_resource_get_user_data(resource);
 	handle->data_device = NULL;
 }
 
 static void data_device_manager_create_data_source(struct wl_client *client,
-		struct wl_resource *res, uint32_t id) {
-	uint32_t version = wl_resource_get_version(res);
+		struct wl_resource *resource, uint32_t id) {
+	uint32_t version = wl_resource_get_version(resource);
 	if (!wlr_wl_data_source_create(client, version, id)) {
 		wlr_log(L_ERROR, "Failed to create wlr_wl_data_source");
-		wl_resource_post_no_memory(res);
+		wl_resource_post_no_memory(resource);
 		return;
 	}
 }
 
 static void data_device_manager_get_data_device(struct wl_client *client,
-		struct wl_resource *res, uint32_t id, struct wl_resource *seat_res) {
-	struct wlr_data_device_manager *manager = wl_resource_get_user_data(res);
-	struct wlr_seat_handle *seat_handle = wl_resource_get_user_data(seat_res);
+		struct wl_resource *resource, uint32_t id,
+		struct wl_resource *seat_resource) {
+	struct wlr_data_device_manager *manager =
+		wl_resource_get_user_data(resource);
+	struct wlr_seat_handle *seat_handle =
+		wl_resource_get_user_data(seat_resource);
 	struct wlr_data_device *device;
 	if (!(device = seat_ensure_data_device(manager, seat_handle->wlr_seat))) {
-		wl_resource_post_no_memory(res);
+		wl_resource_post_no_memory(resource);
 		return;
 	}
 
@@ -101,10 +109,10 @@ static void data_device_manager_get_data_device(struct wl_client *client,
 	}
 
 	seat_handle->data_device = wl_resource_create(client,
-		&wl_data_device_interface, wl_resource_get_version(res), id);
+		&wl_data_device_interface, wl_resource_get_version(resource), id);
 	if (!seat_handle->data_device) {
 		wlr_log(L_ERROR, "Failed to create wl_data_device resource");
-		wl_resource_post_no_memory(res);
+		wl_resource_post_no_memory(resource);
 		return;
 	}
 
@@ -135,18 +143,21 @@ static void data_device_manager_bind(struct wl_client *client, void *data,
 		return;
 	}
 	wl_resource_set_implementation(resource, &data_device_manager_impl,
-			manager, NULL);
+		manager, NULL);
 }
 
-struct wlr_data_device_manager *wlr_data_device_manager_create(struct wl_display *dpy) {
+struct wlr_data_device_manager *wlr_data_device_manager_create(
+		struct wl_display *display) {
 	struct wlr_data_device_manager *manager = calloc(1, sizeof(*manager));
 	if (!manager) {
 		wlr_log(L_ERROR, "Failed to allocated wlr_data_device_manager");
 		return NULL;
 	}
 
-	manager->global = wl_global_create(dpy, &wl_data_device_manager_interface, 3,
-		manager, data_device_manager_bind);
+	manager->global =
+		wl_global_create(display, &wl_data_device_manager_interface, 3, manager,
+			data_device_manager_bind);
+
 	if (!manager->global) {
 		wlr_log(L_ERROR, "Failed to create global for wlr_data_device_manager");
 		free(manager);