// what package os and others expect.
	EACCES       = NewError("access permission denied")
	EAFNOSUPPORT = NewError("address family not supported by protocol")
	ESPIPE       = NewError("illegal seek")
)

// Notes
const (
	SIGABRT = Note("abort")
	SIGALRM = Note("alarm")
	SIGHUP  = Note("hangup")
	SIGINT  = Note("interrupt")
	SIGKILL = Note("kill")
	SIGTERM = Note("interrupt")

// 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)

	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

    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

		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 {

	defer f.Close()
	fi, err := f.Stat()
	if err != nil {
		return nil, false, err
	}
	size := fi.Size()
	if size == 0 {
		return nil, false, nil
	}
	if size < max {
		max = size
	}
	offset, err := f.Seek(-max, io.SeekEnd)
	if err != nil {
		return nil, false, err
	}
	data, err := io.ReadAll(f)
	return data, offset > 0, err

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
}

	INVOKE_SYSCALL
	MOVL	AX, r1+16(FP)
	MOVL	DX, r2+20(FP)
	RET

TEXT ·socketcall(SB),NOSPLIT,$0-36
	JMP	syscall·socketcall(SB)

TEXT ·rawsocketcall(SB),NOSPLIT,$0-36
	JMP	syscall·rawsocketcall(SB)

TEXT ·seek(SB),NOSPLIT,$0-28

    assert await file.read() == b"data"
    assert file.size == 4
    await file.write(b" and more data!")
    assert await file.read() == b""
    assert file.size == 19
    await file.seek(0)
    assert await file.read() == b"data and more data!"