if err != nil {
		return time.Time{}, err
	}
	var timeval syscall.Timeval
	if len(output) != int(unsafe.Sizeof(timeval)) {
		return time.Time{}, fmt.Errorf("unexpected output when calling syscall kern.bootime.  Expected len(output) to be %v, but got %v",
			int(unsafe.Sizeof(timeval)), len(output))
	}
	timeval = *(*syscall.Timeval)(unsafe.Pointer(&output[0]))
	sec, nsec := timeval.Unix()
	return time.Unix(sec, nsec).Truncate(time.Second), nil

//sysnb	Gettimeofday(tv *Timeval) (err error)

func setTimespec(sec, nsec int64) Timespec {
	return Timespec{Sec: sec, Nsec: nsec}
}

func setTimeval(sec, usec int64) Timeval {
	return Timeval{Sec: sec, Usec: usec}
}

func futimesat(dirfd int, path string, tv *[2]Timeval) (err error) {
	if tv == nil {
		return utimensat(dirfd, path, nil, 0)
	}

		return Timespec{}, ERANGE
	}
	return ts, nil
}

// TimevalToNsec returns the time stored in tv as nanoseconds.
func TimevalToNsec(tv Timeval) int64 { return tv.Nano() }

// NsecToTimeval converts a number of nanoseconds into a Timeval.
func NsecToTimeval(nsec int64) Timeval {
	nsec += 999 // round up to microsecond
	usec := nsec % 1e9 / 1e3
	sec := nsec / 1e9
	if usec < 0 {
		usec += 1e6
		sec--
	}

func setTimeval(sec, usec int64) Timeval {
	return Timeval{Sec: sec, Usec: usec}
}

func futimesat(dirfd int, path string, tv *[2]Timeval) (err error) {
	if tv == nil {
		return utimensat(dirfd, path, nil, 0)
	}

	ts := []Timespec{
		NsecToTimespec(TimevalToNsec(tv[0])),
		NsecToTimespec(TimevalToNsec(tv[1])),
	}
	return utimensat(dirfd, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
}

//sys	futimesat(dirfd int, path string, times *[2]Timeval) (err error)

func Gettimeofday(tv *Timeval) (err error) {
	errno := gettimeofday(tv)
	if errno != 0 {
		return errno
	}
	return nil
}

func Time(t *Time_t) (tt Time_t, err error) {
	var tv Timeval
	errno := gettimeofday(&tv)
	if errno != 0 {
		return 0, errno
	}
	if t != nil {

//go:nosplit
func (ts *timespec) setNsec(ns int64) {
	ts.tv_sec = ns / 1e9
	ts.tv_nsec = ns % 1e9
}

type timeval struct {
	tv_sec  int64
	tv_usec int64
}

func (tv *timeval) set_usec(x int32) {
	tv.tv_usec = int64(x)
}

type itimerval struct {
	it_interval timeval
	it_value    timeval
}

type keventt struct {
	ident  uint64
	filter int16
	flags  uint16
	fflags uint32

		nsec += 1e9
		sec--
	}
	return setTimespec(sec, nsec)
}

// TimevalToNsec returns the time stored in tv as nanoseconds.
func TimevalToNsec(tv Timeval) int64 { return tv.Nano() }

// NsecToTimeval converts a number of nanoseconds into a [Timeval].
func NsecToTimeval(nsec int64) Timeval {
	nsec += 999 // round up to microsecond
	usec := nsec % 1e9 / 1e3
	sec := nsec / 1e9
	if usec < 0 {
		usec += 1e6
		sec--
	}

//go:nosplit
func (ts *timespec) setNsec(ns int64) {
	ts.tv_sec = ns / 1e9
	ts.tv_nsec = ns % 1e9
}

type timeval struct {
	tv_sec  int64
	tv_usec int64
}

func (tv *timeval) set_usec(x int32) {
	tv.tv_usec = int64(x)
}

type itimerval struct {
	it_interval timeval
	it_value    timeval
}

type keventt struct {
	ident  uint64
	filter int16
	flags  uint16
	fflags uint32

//sysnb	Gettimeofday(tv *Timeval) (err error)

func setTimespec(sec, nsec int64) Timespec {
	return Timespec{Sec: sec, Nsec: nsec}
}

func setTimeval(sec, usec int64) Timeval {
	return Timeval{Sec: sec, Usec: usec}
}

func futimesat(dirfd int, path string, tv *[2]Timeval) (err error) {
	if tv == nil {
		return utimensat(dirfd, path, nil, 0)
	}

	ts.tv_sec = ns / 1e9
	ts.tv_nsec = ns % 1e9
}

type timeval struct {
	tv_sec  int64
	tv_usec int64
}

func (tv *timeval) set_usec(x int32) {
	tv.tv_usec = int64(x)
}

type itimerspec struct {
	it_interval timespec
	it_value    timespec
}

type itimerval struct {
	it_interval timeval
	it_value    timeval
}

type sigeventFields struct {
	value  uintptr