libc {

  GLIBC_2.2.5 {

    arch_prctl; __arch_prctl;

    ioperm; iopl;

    modify_ldt;

  }

}

librt {

  GLIBC_2.3.3 {

    # Changed timer_t.

    timer_create; timer_delete; timer_getoverrun; timer_gettime;

    timer_settime;

  }

}