def ReconcileShadow(self, store_type):
    """Verify that entries that claim to use shadow files have a shadow entry.

    If the entries of the non-shadowed file indicate that a shadow file is used,
    check that there is actually an entry for that file in shadow.

    Args:
      store_type: The type of password store that should be used (e.g.
        /etc/shadow or /etc/gshadow)
    """
    for k, v in iteritems(self.entry):
      if v.pw_entry.store == store_type:
        shadow_entry = self.shadow.get(k)
        if shadow_entry is not None:
          v.pw_entry = shadow_entry
        else:
          v.pw_entry.store = "UNKNOWN"