docs: def list_locks(root=None):
      '''
      List current package locks.
  
      root
          operate on a different root directory.
  
      Return a dict containing the locked package with attributes::
  
          {'<package>': {'case_sensitive': '<case_sensitive>',
                         'match_type': '<match_type>'
                         'type': '<type>'}}
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' pkg.list_locks
      '''
      locks = {}
      _locks = os.path.join(root, os.path.relpath(LOCKS, os.path.sep)) if root else LOCKS
      try:
          with salt.utils.files.fopen(_locks) as fhr:
              items = salt.utils.stringutils.to_unicode(fhr.read()).split('\n\n')
              for meta in [item.split('\n') for item in items]:
                  lock = {}
                  for element in [el for el in meta if el]:
                      if ':' in element:
                          lock.update(dict([tuple([i.strip() for i in element.split(':', 1)]), ]))
                  if lock.get('solvable_name'):
                      locks[lock.pop('solvable_name')] = lock
      except IOError:
          pass
      except Exception:
          log.warning('Detected a problem when accessing %s', _locks)
  
      return locks