Cgid uint32
	Mode uint32
	_    [0]uint8
	Seq  uint16
	_    uint16
	_    uint64
	_    uint64
}
type SysvShmDesc struct {
	Perm   SysvIpcPerm
	Segsz  uint64
	Atime  int64
	Dtime  int64
	Ctime  int64
	Cpid   int32
	Lpid   int32
	Nattch uint64
	_      uint64
	_      uint64

	Cgid uint32
	Mode uint32
	_    [0]uint8
	Seq  uint16
	_    uint16
	_    uint32
	_    uint32
}
type SysvShmDesc struct {
	Perm       SysvIpcPerm
	Segsz      uint32
	Atime      uint32
	Dtime      uint32
	Ctime      uint32
	Cpid       int32
	Lpid       int32
	Nattch     uint32
	Atime_high uint16
	Dtime_high uint16
	Ctime_high uint16
	_          uint16

// file, similar to the Unix utime() or utimes() functions.
// A zero time.Time value will leave the corresponding file time unchanged.
//
// The underlying filesystem may truncate or round the values to a
// less precise time unit.
// If there is an error, it will be of type *PathError.
func Chtimes(name string, atime time.Time, mtime time.Time) error {
	var d syscall.Dir

	d.Null()

	}
	dirFd, pathPtr, pathLen := preparePath(path)
	atime := TimespecToNsec(ts[0])
	mtime := TimespecToNsec(ts[1])
	if ts[0].Nsec == UTIME_OMIT || ts[1].Nsec == UTIME_OMIT {
		var st Stat_t
		if err := Stat(path, &st); err != nil {
			return err
		}
		if ts[0].Nsec == UTIME_OMIT {
			atime = int64(st.Atime)
		}
		if ts[1].Nsec == UTIME_OMIT {
			mtime = int64(st.Mtime)
		}
	}
	errno := path_filestat_set_times(

	return true
}

// A timeTimer is a runtime-allocated time.Timer or time.Ticker
// with the additional runtime state following it.
// The runtime state is inaccessible to package time.
type timeTimer struct {
	c    unsafe.Pointer // <-chan time.Time
	init bool
	timer
}

// newTimer allocates and returns a new time.Timer or time.Ticker (same layout)
// with the given parameters.
//

	var mtime time.Time
	if mtimeStr != "" {
		mtime, err = time.Parse(time.RFC3339Nano, mtimeStr)
		if err != nil {
			return opts, fmt.Errorf("Unable to parse %s, failed with %w", xhttp.MinIOSourceMTime, err)
		}
	}
	retaintimeStr := strings.TrimSpace(hdr.Get(xhttp.MinIOSourceObjectRetentionTimestamp))
	var retaintimestmp time.Time
	if retaintimeStr != "" {

			// atime and ctime fields (e.g., when they are valid octal strings),
			// then it is impossible to distinguish between a valid GNU file
			// and an invalid pre-Go1.8 file.
			//
			// See https://golang.org/issues/12594
			// See https://golang.org/issues/21005
			if p2.err != nil {
				hdr.AccessTime, hdr.ChangeTime = time.Time{}, time.Time{}
				ustar := tr.blk.toUSTAR()

	tw := tar.NewWriter(zw)

	// Find the mode and mtime to use for directory entries,
	// based on the mode and mtime of the first file we see.
	// We know that modes and mtimes are uniform across the archive.
	var dirMode fs.FileMode
	var mtime time.Time
	for _, f := range a.Files {
		dirMode = fs.ModeDir | f.Mode | (f.Mode&0444)>>2 // copy r bits down to x bits
		mtime = f.Time
		break
	}

		size = 8
	}

	// Transition times.
	txtimes := dataIO{d.read(n[NTime] * size), false}

	// Time zone indices for transition times.
	txzones := d.read(n[NTime])

	// Zone info structures
	zonedata := dataIO{d.read(n[NZone] * 6), false}

	// Time zone abbreviations.
	abbrev := d.read(n[NChar])

	// Leap-second time pairs
	d.read(n[NLeap] * (size + 4))

	//
	// To use AccessTime or ChangeTime, specify the Format as PAX or GNU.
	// To use sub-second resolution, specify the Format as PAX.
	ModTime    time.Time // Modification time
	AccessTime time.Time // Access time (requires either PAX or GNU support)
	ChangeTime time.Time // Change time (requires either PAX or GNU support)

	Devmajor int64 // Major device number (valid for TypeChar or TypeBlock)