t.Fatal(err)
	}

	hdr, err := FileInfoHeader(fileinfo, "")
	if err != nil {
		t.Fatalf("os.Stat:1 %v", err)
	}

	// some sample data
	chineseFilename := "文件名"
	chineseGroupname := "組"
	chineseUsername := "用戶名"

	hdr.Name = chineseFilename
	hdr.Gname = chineseGroupname
	hdr.Uname = chineseUsername

	contents := strings.Repeat(" ", int(hdr.Size))

	var buf bytes.Buffer

	hdr := r.opts.HeaderSize // remaining header bytes
	var tokens int           // number of tokens to request

	if hdr > 0 { // available tokens go towards header first
		if hdr < b { // all of header can be accommodated
			r.opts.HeaderSize = 0
			need = int(math.Min(float64(b-hdr), float64(need))) // use remaining tokens towards payload
			tokens = need + hdr

	modTime := hdr.ModTime
	if modTime.IsZero() {
		modTime = time.Unix(0, 0)
	}

	v7 := tw.blk.toV7()
	v7.typeFlag()[0] = hdr.Typeflag
	fmtStr(v7.name(), hdr.Name)
	fmtStr(v7.linkName(), hdr.Linkname)
	fmtNum(v7.mode(), hdr.Mode)
	fmtNum(v7.uid(), int64(hdr.Uid))
	fmtNum(v7.gid(), int64(hdr.Gid))
	fmtNum(v7.size(), hdr.Size)
	fmtNum(v7.modTime(), modTime.Unix())

	ustar := tw.blk.toUSTAR()

				}
				chksums = append(chksums, fmt.Sprintf("%x", h.Sum(nil)))
			}

			for i, hdr := range hdrs {
				if i >= len(v.headers) {
					t.Fatalf("entry %d: unexpected header:\ngot %+v", i, *hdr)
				}
				if !reflect.DeepEqual(*hdr, *v.headers[i]) {
					t.Fatalf("entry %d: incorrect header:\ngot  %+v\nwant %+v", i, *hdr, *v.headers[i])
				}
			}
			if len(hdrs) != len(v.headers) {

		metadata = make(map[string]string)
	}

	wantCRC, err := hash.GetContentChecksum(hdr)
	if err != nil {
		return opts, fmt.Errorf("invalid/unknown checksum sent: %v", err)
	}
	etag := strings.TrimSpace(hdr.Get(xhttp.MinIOSourceETag))

	if crypto.S3KMS.IsRequested(hdr) {
		keyID, context, err := crypto.S3KMS.ParseHTTP(hdr)
		if err != nil {
			return ObjectOptions{}, err
		}

for compatibility reasons.
Packages or programs may define additional settings for internal debugging purposes;
for example,
see the [runtime documentation](/pkg/runtime#hdr-Environment_Variables)
and the [go command documentation](/cmd/go#hdr-Build_and_test_caching).

### Go 1.24

Go 1.24 changed the global [`math/rand.Seed`](/pkg/math/rand/#Seed) to be a
no-op. This behavior is controlled by the `randseednop` setting.

	var b bytes.Buffer
	tw := NewWriter(&b)
	hdr := &Header{
		Name:       "file.txt",
		Uid:        1 << 21, // Too big for 8 octal digits
		Size:       int64(len(data)),
		ModTime:    time.Now().Round(time.Second),
		PAXRecords: map[string]string{"uid": "2097152"},
		Format:     FormatPAX,
		Typeflag:   TypeReg,
	}
	if err := tw.WriteHeader(hdr); err != nil {
		t.Fatalf("tw.WriteHeader: %v", err)
	}

			}
			if int64(cap(dst)) < hdr.Length+1 {
				dst = make([]byte, 0, hdr.Length+hdr.Length>>3)
			}
			if !hdr.Fin {
				hdr.Length = -1
			}
			return readAllInto(dst[:0], &wsReader, hdr.Length)
		}
	}

	// Keep reusing the same buffer.
	var msg []byte
	for atomic.LoadUint32((*uint32)(&c.state)) == StateConnected {
		if cap(msg) > readBufferSize*4 {
			// Don't keep too much memory around.

						if v == latestCount && latest.header.sortsBefore(k) {
							// Tiebreak, use sort.
							continue
						}
						for _, a := range tops {
							hdr := a.header
							if !strict {
								hdr.Signature = [4]byte{}
							}
							if hdr == k {
								latest = a
							}
						}
						latestCount = v
					}
					break
				}
			}
			if latestCount >= quorum {

}

func extractMetadata(ctx context.Context, mimesHeader ...textproto.MIMEHeader) (metadata map[string]string, err error) {
	metadata = make(map[string]string)

	for _, hdr := range mimesHeader {
		// Extract all query values.
		err = extractMetadataFromMime(ctx, hdr, metadata)
		if err != nil {
			return nil, err
		}
	}

	// Set content-type to default value if it is not set.