if (this.smb2) {
                    final Smb2WriteRequest wr = new Smb2WriteRequest(th.getConfig(), fh.getFileId());
                    wr.setOffset(this.fp);
                    wr.setData(b, off, w);

                    final Smb2WriteResponse resp = th.send(wr, RequestParam.NO_RETRY);
                    final long cnt = resp.getCount();
                    this.fp += cnt;

	}
	if b.buf == nil {
		b.buf = make([]byte, defaultBufSize)
	}
	b.err = nil
	b.n = 0
	b.wr = w
}

// Flush writes any buffered data to the underlying [io.Writer].
func (b *Writer) Flush() error {
	if b.err != nil {
		return b.err
	}
	if b.n == 0 {
		return nil
	}
	n, err := b.wr.Write(b.buf[0:b.n])
	if n < b.n && err == nil {
		err = io.ErrShortWrite
	}
	if err != nil {

	owner := cred.AccessKey == globalActiveCred.AccessKey

	// Set prefix value for "s3:prefix" policy conditionals.
	r.Header.Set("prefix", "")

	// Set delimiter value for "s3:delimiter" policy conditionals.
	r.Header.Set("delimiter", SlashSeparator)

	isAllowedAccess := func(bucketName string) (rd, wr bool) {
		if globalIAMSys.IsAllowed(policy.Args{

			BucketName:      bucketName,
			ConditionValues: getConditionValues(r, "", cred),
			IsOwner:         owner,
			ObjectName:      "",
			Claims:          cred.Claims,
		}) {
			wr = true
		}

		return rd, wr
	}

	// If etcd, dns federation configured list buckets from etcd.
	var err error
	var buckets []BucketInfo
	if globalDNSConfig != nil && globalBucketFederation {