_SIOR
#define SNDCTL_SEQ_GETOUTCOUNT _SIOR ('Q', 4, int)
#define SNDCTL_SEQ_GETINCOUNT _SIOR ('Q', 5, int)
#define SNDCTL_SEQ_NRSYNTHS _SIOR ('Q',10, int)
#define SNDCTL_SEQ_NRMIDIS _SIOR ('Q',11, int)
#define SNDCTL_SEQ_GETTIME _SIOR ('Q',19, int)
#define SNDCTL_DSP_GETFMTS _SIOR ('P',11, int) /* Returns a mask */
#define SNDCTL_DSP_GETOSPACE _SIOR ('P',12, audio_buf_info)
#define SNDCTL_DSP_GETISPACE _SIOR ('P',13, audio_buf_info)
#define SNDCTL_DSP_GETCAPS _SIOR ('P',15, int)
#define SNDCTL_DSP_GETTRIGGER _SIOR ('P',16, int)
#define SNDCTL_DSP_GETIPTR _SIOR ('P',17, count_info)
#define SNDCTL_DSP_GETOPTR _SIOR ('P',18, count_info)
#define SNDCTL_DSP_MAPINBUF _SIOR ('P', 19, buffmem_desc)
#define SNDCTL_DSP_MAPOUTBUF _SIOR ('P', 20, buffmem_desc)
#define SNDCTL_DSP_GETODELAY _SIOR ('P', 23, int)
#define SNDCTL_DSP_GETSPDIF _SIOR ('P', 67, int)
#define SOUND_PCM_READ_RATE _SIOR ('P', 2, int)
#define SOUND_PCM_READ_CHANNELS _SIOR ('P', 6, int)
#define SOUND_PCM_READ_BITS _SIOR ('P', 5, int)
#define SOUND_PCM_READ_FILTER _SIOR ('P', 7, int)
#define SNDCTL_COPR_RCVMSG _SIOR ('C', 9, copr_msg)
#define MIXER_READ(dev) _SIOR('M', dev, int)
#define SOUND_MIXER_INFO _SIOR ('M', 101, mixer_info)
#define SOUND_OLD_MIXER_INFO _SIOR ('M', 101, _old_mixer_info)
#define OSS_GETVERSION _SIOR ('M', 118, int)
#define OSS_ALSAEMULVER _SIOR ('M', 249, int)
#define OSS_ALSAEMULVER _SIOR ('M', 249, int)