bodyDoneCh := make(chan struct{})
	doneCh := make(chan error)
	ctx := r.Context()
	go func() {
		canWrite := true
		write := func(b []byte) {
			if canWrite {
				n, err := w.Write(b)
				if err != nil || n != len(b) {
					canWrite = false
				}
			}
		}
		// Wait for body to be read.
		select {
		case <-ctx.Done():
		case <-bodyDoneCh:

            return true;
        }
        return exists(); // try opening and catch sharing violation?
    }


    @Override
    public boolean canWrite () throws SmbException {
        if ( getType() == TYPE_NAMED_PIPE ) { // try opening the pipe for writing?
            return true;
        }
        return exists() && ( this.attributes & ATTR_READONLY ) == 0;

 * will be read-only.
 *
 * @return  <code>true</code> if the resource exists is not marked
 *          read-only
 */

    public boolean canWrite() throws SmbException {
        if( getType() == TYPE_NAMED_PIPE ) { // try opening the pipe for writing?
            return true;
        }
        return exists() && ( attributes & ATTR_READONLY ) == 0;
    }