if (!of && (access(arg_output_path, R_OK|W_OK|X_OK) == 0)) {
t = time(NULL);
strftime(datestr, sizeof(datestr), "%Y%m%d-%H%M", localtime(&t));
snprintf(output_file, PATH_MAX, "%s/bootchart-%s.svg", arg_output_path, datestr);
if (!of && (access(arg_output_path, R_OK|W_OK|X_OK) == 0)) {
t = time(NULL);
strftime(datestr, sizeof(datestr), "%Y%m%d-%H%M", localtime(&t));
snprintf(output_file, PATH_MAX, "%s/bootchart-%s.svg", arg_output_path, datestr);