asysctlbyname
__weak_alias(asysctlbyname,_asysctlbyname)
void *asysctlbyname(const char *, size_t *);
data = asysctlbyname("kern.pool", &len);
data = asysctlbyname("kern.pool", &len);
paths = asysctlbyname(HW_FIRMWARE_PATH, &len);
name = asysctlbyname(path, &len);
fpuname = asysctlbyname(path, &len);
name = asysctlbyname(path, &len);