[alsa-devel] Third time: Unlink PCM resource ?

Takashi Iwai tiwai at suse.de
Mon May 25 20:34:34 CEST 2009

At Mon, 25 May 2009 20:27:14 +0200,
Werner Van Belle wrote:
> Takashi Iwai wrote:
> > You can control it via fcntl().  See fcntl(2) man page.
> >   
> I looked at that but I didn't find any place in alsalib (or libalsa
> whatever the order of those two words), where I can obtain the file
> handle. They are all of type pcm_something_t. I found a file handle
> quite deep in this library but there seems no way to actually obtain
> that handle.

OK, I see the problem now, too.  In practice, you can get a file
descriptor from poll descriptor, but this doesn't cover all underlying
fds.  A new API function or an additional SND_PCM_* flag for
snd_pcm_open() would be needed, indeed.

In the latter case, it must be easy -- just pass O_CLOEXEC flag to
open() call...


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