On Sun, Nov 30, 2014 at 04:40:21PM +0000, Ivan Shmakov wrote:
> >>>>> Josselin Mouette <j...@debian.org> writes:
>  > * Other users only have access to audio devices through ACLs when
>  > physically logged on.
> 
>       Unless I be mistaken, ACLs are only applied at the time of
>       open(2).  What about the processes (if any) which opened an
>       audio device back when it was possible, but are still running at
>       the time the user logs out?

That is how Linux works, yes. revoke() syscalls have been occasionally
proposed for at least 15 years but as far as I know no implementation
has yet been accepted in the Linux kernel.

I don't know if logind can do or does anything beyond that.


Andreas


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