Function do_exit

scripts/config/nconf.c:654–695

return = 0 means we are successful. * -1 means go on doing what you were doing */

 * -1 means go on doing what you were doing
 */
static int do_exit(void)
{
	int res;
	if (!conf_get_changed()) {
		global_exit = 1;
		return 0;
	}
	res = btn_dialog(main_window,
			"Do you wish to save your new configuration?\n"
				"<ESC> to cancel and resume nconfig.",
			2,
			"   <save>   ",
			"<don't save>");
	if (res == KEY_EXIT) {
		global_exit = 0;
		return -1;
	}

	/* if we got here, the user really wants to exit */
	switch (res) {
	case 0:
		res = conf_write(filename);
		if (res)
			btn_dialog(
				main_window,
				"Error during writing of configuration.\n"
				  "Your configuration changes were NOT saved.",
				  1,
				  "<OK>");
		conf_write_autoconf(0);
		break;
	default:
		btn_dialog(
			main_window,
			"Your configuration changes were NOT saved.",
			1,
			"<OK>");
		break;
	}
	global_exit = 1;
	return 0;
}

struct search_data {
	struct list_head *head;