code: def _is_master_running(self):
          '''
          Perform a lightweight check to see if the master daemon is running
  
          Note, this will return an invalid success if the master crashed or was
          not shut down cleanly.
          '''
          # Windows doesn't have IPC. Assume the master is running.
          # At worse, it will error 500.
          if salt.utils.platform.is_windows():
              return True
  
          if self.opts['transport'] == 'tcp':
              ipc_file = 'publish_pull.ipc'
          else:
              ipc_file = 'workers.ipc'
          return os.path.exists(os.path.join(
              self.opts['sock_dir'],
              ipc_file)f _is_master_running(self):
          '''
          Perform a lightweight check to see if the master daemon is running
  
          Note, this will return an invalid success if the master crashed or was
          not shut down cleanly.
          '''
          # Windows doesn't have IPC. Assume the master is running.
          # At worse, it will error 500.
          if salt.utils.platform.is_windows():
              return True
  
          if self.opts['transport'] == 'tcp':
              ipc_file = 'publish_pull.ipc'
          else:
              ipc_file = 'workers.ipc'
          return os.path.exists(os.path.join(
              self.opts['sock_dir'],
              ipc_file))
docs: Perform a lightweight check to see if the master daemon is running
  
          Note, this will return an invalid success if the master crashed or was
          not shut down cleanly.