Something

  /* Unix */  if ((ACCESS ("/usr/sbin/update-rc.d", X_OK) != 0))    {      if ((ACCESS ("/sbin/rc-update") != 0))        {          GNUNET_GE_LOG_STRERROR_FILE (ectx,                                       GNUNET_GE_ERROR | GNUNET_GE_USER |                                       GNUNET_GE_ADMIN | GNUNET_GE_IMMEDIATE,                                       "access", "/usr/sbin/update-rc.d");          return GNUNET_SYSERR;        }    }