#!/bin/bash
vdirs=${1:-$VOLUME_DIRS}
if [[ $vdirs ]]; then
  echo changing ownership of directories $vdirs
  vgroup=host
  [[ ! $USER = "root" && $USER ]]; vgroup=$USER 
  vmap=${HOST_MAP:-host:$vgroup} 
  echo to $vmap
  declare usesudo
  [[ ! $USER = "root" ]] && usesudo=sudo 
  $usesudo chown -R $vmap $vdirs
fi