Re: [Xenomai] [Xenomai-git] Philippe Gerum: copperplate: add configuration tunable for registry moint point

[Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>]

On Wed, Jan 07, 2015 at 07:14:56PM +0100, Jan Kiszka wrote:
> On 2015-01-03 23:25, Gilles Chanteperdrix wrote:
> >>>
> >>> Alternatively (to the last item), the sysregd could be made suid
> >>> root, create the session directory if it does not exist with root
> >>> permissions but with the target user as owner, then drop root
> >>> privileges and continue as a normal user.
> >>
> >> Should work, but unless I stumbled over fundamental issues why sysregd
> >> is not working as normal user right now, I don't see a technical need
> >> for this big hammer for user-managed sessions.
> > 
> > The enormous advantage of using the big hammer (in fact, only if we
> > put the three changes into it), is that it avoids explaining things
> > to the users, and avoids as well questions on the mailing list.
> > Given the number of questions we have had about /dev/rtheap and
> > /dev/rtpipe, this would be a win.
> 
> We actually need the big suid-hammer: only root has the permission to
> clean up the mounts of other users. Obsoletes my fusermount -u patch.

Why does root need to clean up the mounts of other users if each
user cleans up its mounts ?

-- 
					    Gilles.