}

	var n int
	if len(sep) > 0 {
		if len(sep) >= maxInt/(len(s)-1) {
			panic("bytes: Join output length overflow")
		}
		n += len(sep) * (len(s) - 1)
	}
	for _, v := range s {
		if len(v) > maxInt-n {
			panic("bytes: Join output length overflow")
		}
		n += len(v)
	}

	b := bytealg.MakeNoZero(n)[:n:n]
	bp := copy(b, s[0])
	for _, v := range s[1:] {

	return func(yield func([]byte) bool) {
		if len(sep) == 0 {
			for len(s) > 0 {
				_, size := utf8.DecodeRune(s)
				if !yield(s[:size:size]) {
					return
				}
				s = s[size:]
			}
			return
		}
		for {
			i := Index(s, sep)
			if i < 0 {
				break
			}
			frag := s[:i+sepSave]
			if !yield(frag[:len(frag):len(frag)]) {
				return
			}
			s = s[i+len(sep):]
		}
		yield(s[:len(s):len(s)])
	}

func (f *formatter) formatString(b []byte, s string) {
	if len(s) > len(b) {
		f.err = ErrFieldTooLong
	}
	copy(b, s)
	if len(s) < len(b) {
		b[len(s)] = 0
	}

	// Some buggy readers treat regular files with a trailing slash
	// in the V7 path field as a directory even though the full path
	// recorded elsewhere (e.g., via PAX record) contains no trailing slash.
	if len(s) > len(b) && b[len(b)-1] == '/' {

	partInfosInQuorum := make([]ObjectPartInfo, len(partMetaPaths))
	for pidx := range partMetaPaths {
		// partMetaQuorumMap uses
		//  - path/to/part.N as key to collate errors from failed drives.
		//  - part ETag to collate part metadata
		partMetaQuorumMap := make(map[string]int, len(partNumbers))
		var pinfos []*ObjectPartInfo
		for idx := range disks {
			if len(objectPartInfos[idx]) != len(partMetaPaths) {

		return nil, ErrNegativeCount
	}

	b.lastByte = -1
	b.lastRuneSize = -1

	for b.w-b.r < n && b.w-b.r < len(b.buf) && b.err == nil {
		b.fill() // b.w-b.r < len(b.buf) => buffer is not full
	}

	if n > len(b.buf) {
		return b.buf[b.r:b.w], ErrBufferFull
	}

	// 0 <= n <= len(b.buf)
	var err error
	if avail := b.w - b.r; avail < n {
		// not enough data in buffer
		n = avail

	metadataArray := make([]*xlMetaV2, len(rawFileInfos))
	metaFileInfos := make([]FileInfo, len(rawFileInfos))
	metadataShallowVersions := make([][]xlMetaV2ShallowVersion, len(rawFileInfos))
	var v2bufs [][]byte
	if !readData {
		v2bufs = make([][]byte, len(rawFileInfos))
	}

	// Read `xl.meta` in parallel across disks.
	for index := range rawFileInfos {

	if globalEndpoints.Legacy() {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
		return
	}

	z, ok := objectAPI.(*erasureServerPools)
	if !ok || len(z.serverPools) == 1 {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
		return
	}

	if z.IsDecommissionRunning() {

		return
	}

	userList := r.Form["users"]
	isAll := r.Form.Get("all") == "true"
	selfOnly := !isAll && len(userList) == 0
	cfgName := r.Form.Get("configName")
	allConfigs := r.Form.Get("allConfigs") == "true"
	if cfgName == "" && !allConfigs {
		cfgName = madmin.Default
	}

	if isAll && len(userList) > 0 {
		// This should be checked on client side, so return generic error

			if joinType == "" {
				joinType = clause.LeftJoin
			}

			if db, ok := jt.Subquery.(interface{ getInstance() *DB }); ok {
				stmt := db.getInstance().Statement
				if len(j.Selects) == 0 {
					j.Selects = stmt.Selects
				}
				if len(j.Omits) == 0 {
					j.Omits = stmt.Omits
				}
			}

	if err != nil {
		apiErr = toAPIError(ctx, err)
		argumentName = strings.ToLower(xhttp.AmzPartNumberMarker)
		valid = false
		return
	}

	opts.ObjectAttributes = parseObjectAttributes(r.Header)
	if len(opts.ObjectAttributes) < 1 {
		apiErr = errorCodes.ToAPIErr(ErrInvalidAttributeName)
		argumentName = strings.ToLower(xhttp.AmzObjectAttributes)
		valid = false
		return
	}