From mboxrd@z Thu Jan  1 00:00:00 1970
From: Philippe Gerum <rpm@xenomai.org>
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Date: Mon, 28 May 2007 15:51:27 +0200
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Sender: Philippe Gerum <philippe.gerum@domain.hid>
Subject: Re: [Xenomai-help] =?iso-8859-1?q?Xenomai_with_=B5Clibc?=
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To: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Cc: xenomai@xenomai.org

On Mon, 2007-05-28 at 15:38 +0200, Gilles Chanteperdrix wrote:
> Fillod Stephane wrote:
> > You may also need this patch:
> > 
> > --- skins/native/task.c 20 Mar 2007 08:16:41 -0000      1.1.1.1
> > +++ skins/native/task.c 28 Mar 2007 13:53:03 -0000      1.2
> > @@ -135,7 +135,12 @@
> >         pthread_attr_setstacksize(&thattr, stksize);
> >         if (!(mode & T_JOINABLE))
> >                 pthread_attr_setdetachstate(&thattr, PTHREAD_CREATE_DETACHED);
> > -       if (prio > 0) {
> > +       /* There's a limitation in libpthread
> > +        * that returns EPERM upon SCHED_FIFO
> > +        * for non priviledged users.
> > +        * So workaround this for now. FIXME (in uClibc/pthread).
> > +        */
> > +       if (prio > 0 && geteuid() == 0) {
> >                 pthread_attr_setschedpolicy(&thattr, SCHED_FIFO);
> >                 param.sched_priority = sched_get_priority_max(SCHED_FIFO);
> >         }
> 
> I do not think it is a good idea, I prefer rt_task_create to fail loudly
> because it needs root priviledge, rather than silently creating a non
> real-time thread.
> 

Agreed.

-- 
Philippe.