code: func ResetInterruptSignalHandler() {
  	_, err := C.resetInterruptSignalHandler()
  	if err != nil {
  		log.Warnf("Failed to reset interrupt signal handler: %v.", err)
  	}
  }
docs: // ResetInterruptSignal will reset the handler for SIGINT back to the default
  // handler. We need to do this because when sysvinit launches Teleport on some
  // operating systems (like CentOS 6.8) it configures Teleport to ignore SIGINT
  // signals. See the following for more details:
  //
  // http://garethrees.org/2015/08/07/ping/
  // https://github.com/openssh/openssh-portable/commit/4e0f5e1ec9b6318ef251180dbca50eaa01f74536