misc keyboard fixes

types/wlr_keyboard.c

@@ -133,7 +133,11 @@ void wlr_keyboard_led_update(struct wlr_keyboard *kb, uint32_t leds) {
 void wlr_keyboard_set_keymap(struct wlr_keyboard *kb,
 		struct xkb_keymap *keymap) {
 	wlr_log(L_DEBUG, "Keymap set");
+	if (kb->keymap) {
+		xkb_keymap_unref(kb->keymap);
+	}
 	kb->keymap = keymap;
+	xkb_keymap_ref(keymap);
 	assert(kb->xkb_state = xkb_state_new(kb->keymap));
 
 	const char *led_names[WLR_LED_COUNT] = {
@@ -163,9 +167,18 @@ void wlr_keyboard_set_keymap(struct wlr_keyboard *kb,
 	char *keymap_str = xkb_keymap_get_as_string(kb->keymap,
 		XKB_KEYMAP_FORMAT_TEXT_V1);
 	kb->keymap_size = strlen(keymap_str) + 1;
+	if (kb->keymap_fd) {
+		close(kb->keymap_fd);
+	}
 	kb->keymap_fd = os_create_anonymous_file(kb->keymap_size);
+	if (kb->keymap_fd < 0) {
+		wlr_log(L_ERROR, "creating a keymap file for %lu bytes failed", kb->keymap_size);
+	}
 	void *ptr = mmap(NULL, kb->keymap_size,
 		PROT_READ | PROT_WRITE, MAP_SHARED, kb->keymap_fd, 0);
+	if (ptr == (void*)-1) {
+		wlr_log(L_ERROR, "failed to mmap() %lu bytes", kb->keymap_size);
+	}
 	strcpy(ptr, keymap_str);
 	free(keymap_str);
 

types/wlr_seat.c

@@ -710,9 +710,12 @@ static void handle_keyboard_keymap(struct wl_listener *listener, void *data) {
 	struct wlr_seat_keyboard_state *state =
 		wl_container_of(listener, state, keyboard_keymap);
 	struct wlr_seat_client *client;
+	struct wlr_keyboard *keyboard = data;
+	if (keyboard == state->keyboard) {
 		wl_list_for_each(client, &state->seat->clients, link) {
 			seat_client_send_keymap(client, state->keyboard);
 		}
+	}
 }
 
 static void handle_keyboard_repeat_info(struct wl_listener *listener,
@@ -736,7 +739,8 @@ void wlr_seat_set_keyboard(struct wlr_seat *seat,
 	// TODO call this on device key event before the event reaches the
 	// compositor and set a pending keyboard and then send the new keyboard
 	// state on the next keyboard notify event.
-	if (seat->keyboard_state.keyboard == device->keyboard) {
+	struct wlr_keyboard *keyboard = (device ? device->keyboard : NULL);
+	if (seat->keyboard_state.keyboard == keyboard) {
 		return;
 	}
 
@@ -747,7 +751,7 @@ void wlr_seat_set_keyboard(struct wlr_seat *seat,
 		seat->keyboard_state.keyboard = NULL;
 	}
 
-	if (device) {
+	if (keyboard) {
 		assert(device->type == WLR_INPUT_DEVICE_KEYBOARD);
 
 		wl_signal_add(&device->events.destroy,
@@ -767,8 +771,9 @@ void wlr_seat_set_keyboard(struct wlr_seat *seat,
 			seat_client_send_repeat_info(client, device->keyboard);
 		}
 
-		seat->keyboard_state.keyboard = device->keyboard;
 	}
+
+	seat->keyboard_state.keyboard = keyboard;
 }
 
 void wlr_seat_keyboard_start_grab(struct wlr_seat *wlr_seat,