//sys	ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) = SYS_IOCTL

//sys	sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL

func IoctlGetPtmget(fd int, req uint) (*Ptmget, error) {
	var value Ptmget
	err := ioctlPtr(fd, req, unsafe.Pointer(&value))
	return &value, err
}

func Uname(uname *Utsname) error {
	mib := []_C_int{CTL_KERN, KERN_OSTYPE}