return &PodNetnsEntry{
		uid:     uid,
		netns:   netns,
		netnsfd: fd,
		inode:   inode,
	}, nil
}

func isProcess(entry fs.DirEntry) bool {
	// check if it is a directory
	if !entry.IsDir() {
		return false
	}

	// check if it is a number
	if strings.IndexFunc(entry.Name(), isNotNumber) != -1 {
		return false
	}
	return true
}

func GetFd(f fs.File) (uintptr, error) {

	return filepath.Walk(src, func(path string, info fs.FileInfo, err error) error {
		if err != nil {
			return err
		}

		outpath := filepath.Join(dest, strings.TrimPrefix(path, src))

		if info.IsDir() {
			os.MkdirAll(outpath, info.Mode())
			return nil
		}
		cpErr := file.AtomicCopy(path, filepath.Dir(outpath), filepath.Base(outpath))
		if cpErr != nil {
			return cpErr
		}

		return nil
	})