[selinux] Re: Conflict between local module and local fcontext

[Robin Lee Powell]

On Mon, Jul 27, 2015 at 08:29:29PM -0700, Robin Lee Powell wrote:
> On Mon, Jul 27, 2015 at 07:45:11PM -0400, Simon Sekidde wrote:
> > 
> > 
> > ----- Original Message -----
> > > From: "Robin Lee Powell" <rlpowell at digitalkingdom.org>
> > > To: selinux at lists.fedoraproject.org
> > > Sent: Monday, July 27, 2015 6:05:51 PM
> > > Subject: Conflict between local module and local fcontext
> > > 
> > > 
> > > So I have a custom module that includes:
> > > 
> > >   type lojban_logger_t;
> > >   type lojban_logger_exec_t;
> > >   
> > >   application_domain( lojban_logger_t, lojban_logger_exec_t)
> > >   init_daemon_domain(lojban_logger_t, lojban_logger_exec_t)
> > > 
> > > (not sure if those are redundant?) and:
> > > 
> > >   /srv/lojban/irclogs(/.*)?      system_u:object_r:lojban_logger_t:s0
> > > 
> > > I've made a variety of changes with "semodule fcontext", including:
> > > 
> > >   /srv/lojban    system_u:object_r:httpd_user_content_t:s0
> > >   /srv/lojban(/.*)?    system_u:object_r:httpd_user_content_t:s0
> > > 
> > > As a result, the changes in my module are ignored, and the files
> > > end up with httpd_user_content_t
> > > 
> > > So I tried:
> > > 
> > >   $ sudo semanage fcontext -a -t lojban_logger_t '/srv/lojban/irclogs(/.*)?'
> > >   ValueError: Type lojban_logger_t is invalid, must be a file or device type
> > > 
> > > Uhh.
> > > 
> > > I guess this means that the custom module's types can't be seen by
> > > semanage?
> > > 
> > > So, what's the correct solution here?
> > > 
> > 
> > 1) Define a new type that is usable for log files in the .te
> > 
> > type logjban_logger_log_t; 
> > logging_log_type(logjban_logger_log_t)
> > 
> > 2) Add this label to the path in the .fc
> > 
> > /srv/lojban/irclogs(/.*)?      system_u:object_r:logjban_logger_log_t:s0
> 
> Unless I'm missing something, this won't help at all; the semanage
> fcontext rule will win, and they'll end up with httpd_user_content_t
> per the rule for /srv/lojban(/.*)? , because semanage fcontext rules
> *always* win over module rules.

Ah, I see what you're saying; that way at least I'd *have* a file
type, that I could then add with semanage.  I'll try that, thanks.

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