Fix #1709

swaybar/i3bar.c

@@ -203,6 +203,9 @@ void i3bar_block_send_click(struct status_line *status,
 	json_object_object_add(event_json, "button", json_object_new_int(button));
 	json_object_object_add(event_json, "x", json_object_new_int(x));
 	json_object_object_add(event_json, "y", json_object_new_int(y));
-	dprintf(status->write_fd, "%s\n", json_object_to_json_string(event_json));
+	if (dprintf(status->write_fd, "%s\n",
+				json_object_to_json_string(event_json)) < 0) {
+		status_error(status, "[failed to write click event]");
+	}
 	json_object_put(event_json);
 }

swaybar/status_line.c

@@ -59,7 +59,11 @@ bool status_handle_readable(struct status_line *status) {
 					wlr_log(L_DEBUG, "Enabled click events.");
 					status->i3bar_state.click_events = true;
 					const char *events_array = "[\n";
-					write(status->write_fd, events_array, strlen(events_array));
+					ssize_t len = strlen(events_array);
+					if (write(status->write_fd, events_array, len) != len) {
+						status_error(status,
+								"[failed to write to status command]");
+					}
 				}
 				json_object_put(proto);
 			}