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SND_PCM_LIB_IOCTL(9) Sound Devices SND_PCM_LIB_IOCTL(9)

NAME

snd_pcm_lib_ioctl - a generic PCM ioctl callback

SYNOPSIS

int snd_pcm_lib_ioctl(struct snd_pcm_substream * substream, unsigned int cmd, void * arg);

ARGUMENTS

substream
the pcm substream instance
cmd
ioctl command
arg
ioctl argument

DESCRIPTION

Processes the generic ioctl commands for PCM. Can be passed as the ioctl callback for PCM ops.
Returns zero if successful, or a negative error code on failure.

COPYRIGHT

March 2016 Kernel Hackers Manual 3.2.