ALSA_0.9 {
  global:
    snd_*;

    _snd_*_open;
    _snd_*_dlsym_*;
    _snd_*_poll_descriptor;
    _snd_pcm_hook_*;

    __snd_pcm_hw_params_*;
    __snd_pcm_sw_params_*;
    __snd_*_dlsym_*;

  local:
    *;
};