TC_HARDWARE
if (sysctlbyname(TC_HARDWARE, cbuf, &cbufsiz, NULL, 0) != 0) {
(void)printf("%s = %s\n", TC_HARDWARE, cbuf);
CHECK_LIBC(ret = sysctlbyname(TC_HARDWARE, NULL, 0,
RL(sysctlbyname(TC_HARDWARE, NULL, 0, save, strlen(save)));