return err
	}
	if err := cdr.readArgs(); err != nil {
		return err
	}
	// Seek past any padding to bring us up to a 4-byte boundary.
	if of, err := cdr.mr.Seek(0, io.SeekCurrent); err != nil {
		return err
	} else {
		rem := of % 4
		if rem != 0 {
			pad := 4 - rem
			if _, err := cdr.mr.Seek(pad, io.SeekCurrent); err != nil {
				return err
			}
		}
	}
	return nil
}

		// io.Seeker, but calling Seek always returns an error and performs
		// no action. Thus, we try an innocent seek to the current position
		// to see if Seek is really supported.
		pos1, err := sr.Seek(0, io.SeekCurrent)
		if pos1 >= 0 && err == nil {
			// Seek seems supported, so perform the real Seek.
			pos2, err := sr.Seek(n-1, io.SeekCurrent)
			if pos2 < 0 || err != nil {
				return err

		size, err := content.Seek(0, io.SeekEnd)
		if err != nil {
			return 0, errSeeker
		}
		_, err = content.Seek(0, io.SeekStart)
		if err != nil {
			return 0, errSeeker
		}
		return size, nil
	}
	serveContent(w, req, name, modtime, sizeFunc, content)
}

// errSeeker is returned by ServeContent's sizeFunc when the content
// doesn't seek properly. The underlying Seeker's error text isn't

	// of the transfer was reported correctly, and that the destination
	// file contains exactly the bytes we expect it to contain.
	dstoff, err := dst.Seek(0, io.SeekCurrent)
	if err != nil {
		t.Fatal(err)
	}
	srcoff, err := src.Seek(0, io.SeekCurrent)
	if err != nil {
		t.Fatal(err)
	}
	if dstoff != srcoff {
		t.Errorf("offsets differ: dstoff = %d, srcoff = %d", dstoff, srcoff)
	}

	b      *bio.Reader
	err    error
	offset int64
	limit  int64
	tmp    [256]byte
}

func (r *objReader) init(f *os.File) {
	r.a = &Archive{f, nil}
	r.offset, _ = f.Seek(0, io.SeekCurrent)
	r.limit, _ = f.Seek(0, io.SeekEnd)
	f.Seek(r.offset, io.SeekStart)
	r.b = bio.NewReader(f)
}

// error records that an error occurred.
// It returns only the first error, so that an error

	if err != nil {
		return nil, err
	}
	f.Symbols, err = removeAuxSymbols(f.COFFSymbols, f.StringTable)
	if err != nil {
		return nil, err
	}

	// Seek past file header.
	_, err = sr.Seek(base+int64(binary.Size(f.FileHeader)), io.SeekStart)
	if err != nil {
		return nil, err
	}

	// Read optional header.

	return &ObjectReadSeekCloser{
		segmentReader: segmentReader,
		size:          actualSize,
		offset:        0,
		reader:        nil,
	}
}

// Seek call to implement io.Seeker
func (rsc *ObjectReadSeekCloser) Seek(offset int64, whence int) (int64, error) {
	// fmt.Printf("actual: %v offset: %v (%v) whence: %v\n", rsc.size, offset, rsc.offset, whence)
	switch whence {
	case io.SeekStart:

			}
		}
	}

	if e != nil {
		return nil, &PathError{Op: "open", Path: name, Err: e}
	}

	if append {
		if _, e = syscall.Seek(fd, 0, io.SeekEnd); e != nil {
			return nil, &PathError{Op: "seek", Path: name, Err: e}
		}
	}

	return NewFile(uintptr(fd), name), nil
}

func openDirNolog(name string) (*File, error) {
	return openFileNolog(name, O_RDONLY, 0)
}

	O_TRUNC  int = syscall.O_TRUNC  // truncate regular writable file when opened.
)

// Seek whence values.
//
// Deprecated: Use io.SeekStart, io.SeekCurrent, and io.SeekEnd.
const (
	SEEK_SET int = 0 // seek relative to the origin of the file
	SEEK_CUR int = 1 // seek relative to the current offset
	SEEK_END int = 2 // seek relative to the end
)

// LinkError records an error during a link or symlink or rename

func (r *Reader) ByteOrder() binary.ByteOrder {
	return r.b.order
}

// Seek positions the [Reader] at offset off in the encoded entry stream.
// Offset 0 can be used to denote the first entry.
func (r *Reader) Seek(off Offset) {
	d := r.d
	r.err = nil
	r.lastChildren = false
	if off == 0 {
		if len(d.unit) == 0 {
			return
		}
		u := &d.unit[0]
		r.unit = 0