Function ListDirectories

lib/container/common/helpers.go:304–331

Lists all directories under "path" and outputs the results as children of "parent".

(dirpath string, parent string, recursive bool, output map[string]struct{})

// Lists all directories under "path" and outputs the results as children of "parent".
func ListDirectories(dirpath string, parent string, recursive bool, output map[string]struct{}) error {
	dirents, err := os.ReadDir(dirpath)
	if err != nil {
		// Ignore if this hierarchy does not exist.
		if errors.Is(err, fs.ErrNotExist) {
			return nil
		}
		return err
	}
	for _, dirent := range dirents {
		// We only grab directories.
		if !dirent.IsDir() {
			continue
		}
		dirname := dirent.Name()

		name := path.Join(parent, dirname)
		output[name] = struct{}{}

		// List subcontainers if asked to.
		if recursive {
			if err := ListDirectories(path.Join(dirpath, dirname), name, true, output); err != nil {
				return err
			}
		}
	}
	return nil
}

func MakeCgroupPaths(mountPoints map[string]string, name string) map[string]string {
	cgroupPaths := make(map[string]string, len(mountPoints))