+ if (is_daemonized()) {
+ /* According to documentation and historically, -nographic redirects
+ * serial port, parallel port and monitor to stdio, which does not work
+ * with -daemonize. We can redirect these to null instead, but since
+ * -nographic is legacy, let's just error out.
+ * We disallow -nographic only if all other ports are not redirected
+ * explicitly, to not break existing legacy setups which uses
+ * -nographic _and_ redirects all ports explicitly - this is valid
+ * usage, -nographic is just a no-op in this case.
+ */
+ if (display_type == DT_NOGRAPHIC
+ && (default_parallel || default_serial
+ || default_monitor || default_virtcon)) {
+ fprintf(stderr, "-nographic can not be used with -daemonize\n");
+ exit(1);
+ }
+#ifdef CONFIG_CURSES
+ if (display_type == DT_CURSES) {
+ fprintf(stderr, "curses display can not be used with -daemonize\n");
+ exit(1);
+ }
+#endif
+ }
+