// object should be returned by ObjectLayer.Walk method
type WalkVersionsSortOrder uint8

const (
	// WalkVersionsSortAsc - Sort in ascending order of ModTime
	WalkVersionsSortAsc WalkVersionsSortOrder = iota
	// WalkVersionsSortDesc - Sort in descending order of ModTime
	WalkVersionsSortDesc
)

// ObjectOptions represents object options for ObjectLayer object operations
type ObjectOptions struct {

Each header contains a mspg array (tuple) encoded object:

xlHeaderVersion version == 1:

```
//msgp:tuple xlMetaV2VersionHeader
type xlMetaV2VersionHeader struct {
 VersionID [16]byte  // Version UUID, raw.
 ModTime   int64     // Unix nanoseconds.
 Signature [4]byte   // Signature of metadata.
 Type      uint8     // Type if the version
 Flags     uint8
}
```

The following flags are defined:

```
const (

			}
		case "Name":
			z.Name, bts, err = msgp.ReadStringBytes(bts)
			if err != nil {
				err = msgp.WrapError(err, "Name")
				return
			}
		case "ModTime":
			z.ModTime, bts, err = msgp.ReadTimeBytes(bts)
			if err != nil {
				err = msgp.WrapError(err, "ModTime")
				return
			}
		case "VersionID":
			z.VersionID, bts, err = msgp.ReadStringBytes(bts)
			if err != nil {
				err = msgp.WrapError(err, "VersionID")

		IsLatest:         true,
		Deleted:          false,
		TransitionStatus: "",
		DataDir:          "bffea160-ca7f-465f-98bc-9b4f1c3ba1ef",
		XLV1:             false,
		ModTime:          time.Now(),
		Size:             0,
		Mode:             0,
		Metadata:         nil,
		Parts:            nil,
		Erasure: ErasureInfo{
			Algorithm:    ReedSolomon.String(),
			DataBlocks:   4,

	}
	if !ft.Modified.IsZero() && !equalTimeAndZone(f.Modified, ft.Modified) {
		t.Errorf("%s: Modified=%s, want %s", f.Name, f.Modified, ft.Modified)
	}
	if !ft.ModTime.IsZero() && !equalTimeAndZone(f.ModTime(), ft.ModTime) {
		t.Errorf("%s: ModTime=%s, want %s", f.Name, f.ModTime(), ft.ModTime)
	}

	testFileMode(t, f, ft.Mode)

	size := uint64(f.UncompressedSize)
	if size == uint32max {
		size = f.UncompressedSize64

// versionsSorter sorts FileInfo slices by version.
//
//msgp:ignore versionsSorter
type versionsSorter []FileInfo

func (v versionsSorter) reverse() {
	sort.Slice(v, func(i, j int) bool {
		return v[i].ModTime.Before(v[j].ModTime)
	})
}

func (set *erasureObjects) listObjectsToDecommission(ctx context.Context, bi decomBucketInfo, fn func(entry metaCacheEntry)) error {
	disks, _ := set.getOnlineDisksWithHealing(false)

	tmp := struct {
		VersionID string
		ModTime   time.Time
		Signature string
		Type      uint8
		Flags     uint8
		EcM, EcN  uint8 // Note that these will be 0/0 for non-v2 objects and older xl.meta
	}{
		VersionID: hex.EncodeToString(z.VersionID[:]),
		ModTime:   time.Unix(0, z.ModTime),
		Signature: hex.EncodeToString(z.Signature[:]),
		Type:      z.Type,

				if version.Deleted {
					_, err := z.DeleteObject(ctx,
						bucket,
						version.Name,
						ObjectOptions{
							Versioned:         true,
							VersionID:         versionID,
							MTime:             version.ModTime,
							DeleteReplication: version.ReplicationState,
							SrcPoolIdx:        poolIdx,
							DataMovement:      true,
							DeleteMarker:      true, // make sure we create a delete marker

func (oi ObjectInfo) ToLifecycleOpts() lifecycle.ObjectOpts {
	return lifecycle.ObjectOpts{
		Name:               oi.Name,
		UserTags:           oi.UserTags,
		VersionID:          oi.VersionID,
		ModTime:            oi.ModTime,
		Size:               oi.Size,
		IsLatest:           oi.IsLatest,
		NumVersions:        oi.NumVersions,
		DeleteMarker:       oi.DeleteMarker,
		SuccessorModTime:   oi.SuccessorModTime,

		if si.Mode == 0 {
			// Not, set it to default.
			si.Mode = 0o600
		}
		if si.ModTime.IsZero() {
			// Set time to now.
			si.ModTime = time.Now()
		}
		header, zerr := zip.FileInfoHeader(dummyFileInfo{
			name:    filename,
			size:    si.Size,
			mode:    os.FileMode(si.Mode),
			modTime: si.ModTime,
			isDir:   si.Dir,
			sys:     nil,
		})
		if zerr != nil {