You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: file.go
    path of file: ./repos/marketstore/executor/wal
    
    the code of the file until where you have to start completion: package wal

import (
	"errors"
	"fmt"
	io2 "io"
	"os"

	"github.com/alpacahq/marketstore/v4/utils/io"
	"github.com/alpacahq/marketstore/v4/utils/log"
)

type FileStatusEnum int8

const (
	Invalid FileStatusEnum = iot
    
func Read(fp *os.File, buffer []byte) (result []byte, newOffset int64, err error) {
	offset, err := fp.Seek(0, io2.SeekCurrent)
	if err != nil {
		log.Error(io.GetCallerFileContext(0) + ": Unable to seek in WALFile")
		return nil, 0, fmt.Errorf("unable to seek in WALFile from curpos:%w", err)
	}

	n, err := fp.Read(buffer)
	if errors.Is(err, io2.EOF) {
		return result, newOffset, io2.EOF
	}
	if numToRead := len(buffer); n != numToRead {
		msg := fmt.Sprintf("Read: Expected: %d Got: %d", numToRead, n)
		err = ShortReadError(msg)
	} else if err != nil {
		log.Error(io.GetCallerFileContext(0) + ": Unable to read WALFile")
		err = fmt.Errorf("unable to read WALFile:%w", err)
	}

	return buffer, offset + int64(n), err
}