rtprio + su - doesn't work

[Wojciech Puchar]

>
> I'm not sure what's wrong, but it works fine for me:
>
> # rtprio 31 su -m nobody -c 'id; /usr/sbin/rtprio'
> uid=65534(nobody) gid=65534(nobody) groups=65534(nobody)
> rtprio: realtime priority 31
> #
>
> This is on 7-stable (a few months old, though).

i have 7 stable too. no idea :)

maybe asterisk have something in it's code that drops that privilege.