input = new ByteInput(file)
    }

    def cleanup() {
        file.close()
    }

    def "can reuse to read from multiple locations in file"() {
        given:
        file.seek(0)
        file.writeInt(123)
        file.writeInt(321)
        file.writeInt(456)

        expect:
        def stream = input.start(0)
        stream.readInt() == 123
        stream.readInt() == 321

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build linux && gccgo && 386

package unix

import (
	"syscall"
	"unsafe"
)

func seek(fd int, offset int64, whence int) (int64, syscall.Errno) {
	var newoffset int64
	offsetLow := uint32(offset & 0xffffffff)
	offsetHigh := uint32((offset >> 32) & 0xffffffff)

    private final RandomAccessFile file;

    public RandomAccessFileInputStream(RandomAccessFile file) {
        this.file = file;
    }

    @Override
    public long skip(long n) throws IOException {
        file.seek(file.getFilePointer() + n);
        return n;
    }

    @Override
    public int read(byte[] bytes) throws IOException {
        return file.read(bytes);
    }

    @Override

	MOVSL
	MOVSL
	INT	$64
	MOVL	AX, r1+28(FP)
	MOVL	AX, r2+32(FP)
	MOVL	AX, err+36(FP)
	RET

#define SYS_SEEK 39	/* from zsysnum_plan9.go */

//func seek(placeholder uintptr, fd int, offset int64, whence int) (newoffset int64, err string)
TEXT ·seek(SB),NOSPLIT,$24-36
	NO_LOCAL_POINTERS
	LEAL	newoffset+20(FP), AX
	MOVL	AX, placeholder+0(FP)

	// copy args down
	LEAL	placeholder+0(FP), SI

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

			}
		}
	}

	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

		d.idx += int64(w)
		n += w
	}
	if d.idx >= d.length {
		extraBytes := d.idx - d.length
		n -= int(extraBytes)
		if n < 0 {
			n = 0
		}
		err = io.EOF
	}
	return
}

func (d *DummyDataGen) Seek(offset int64, whence int) (int64, error) {
	switch whence {
	case io.SeekStart:
		if offset < 0 {
			return 0, errors.New("Invalid offset")
		}
		d.idx = offset
	case io.SeekCurrent:
		if d.idx+offset < 0 {

type Section struct {
	SectionHeader

	// Embed ReaderAt for ReadAt method.
	// Do not embed SectionReader directly
	// to avoid having Read and Seek.
	// If a client wants Read and Seek it must use
	// Open() to avoid fighting over the seek offset
	// with other clients.
	io.ReaderAt
	sr *io.SectionReader
}

// Data reads and returns the contents of the Plan 9 a.out section.

	return
}

// Underlying system call writes to newoffset via pointer.
// Implemented in assembly to avoid allocation.
func seek(placeholder uintptr, fd int, offset int64, whence int) (newoffset int64, err string)

func Seek(fd int, offset int64, whence int) (newoffset int64, err error) {
	newoffset, e := seek(0, fd, offset, whence)

	if newoffset == -1 {
		err = syscall.ErrorString(e)
	}
	return
}