SNDCTL_DSP_GETOSPACE 692 fs/compat_ioctl.c COMPATIBLE_IOCTL(SNDCTL_DSP_GETOSPACE) SNDCTL_DSP_GETOSPACE 680 include/uapi/linux/soundcard.h #define SOUND_PCM_GETOSPACE SNDCTL_DSP_GETOSPACE SNDCTL_DSP_GETOSPACE 2658 sound/core/oss/pcm_oss.c case SNDCTL_DSP_GETOSPACE: SNDCTL_DSP_GETOSPACE 1126 sound/oss/dmasound/dmasound_core.c case SNDCTL_DSP_GETOSPACE: