Re: Label Translation on Fedora 9

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On Mon, 2008-11-03 at 14:47 +0100, Andy Warner wrote:
> 
> 
> Stephen Smalley wrote: 
> > On Mon, 2008-11-03 at 12:49 +0100, Andy Warner wrote:
> >   
> > > I am running Fedora 9 with the MLS policy and see no evidence that the
> > > label translation is enabled. I am using the default setrans.conf and
> > > the "disable=1" flag is commented out.
> > > 
> > > Using the selinux_trans_to_raw (e.g., with a SystemHigh level)
> > > produces the exact same label string as passed in which will not pass
> > > validation (using s15:c0.c1023 will pass validation). 
> > > 
> > > Trying id-Z followed by newrole produces:
> > > id -Z
> > > warner_u:secadm_r:secadm_t:s0-s15:c0.c1023
> > > 
> > > newrole -l SystemLow-SystemHigh
> > > warner_u:secadm_r:secadm_t:SystemLow-SystemHigh is not a valid context
> > > 
> > > Is there something that must be done to activate label translation?
> > >     
> > 
> > Label translation is provided by a daemon, mcstrans.
> > 
> > yum install mcstrans
> > /sbin/chkconfig mcstrans on
> > /sbin/service mcstrans start
> >   
> 
> Thanks. I was not starting the mcstrans service. When I get a
> translation, it seems odd as follows.
> 
> without mcstrans:
> id -Z
> warner_u:secadm_r:secadm_t:s0-s15:c0.c1023
> 
> with mcstrans:
> id -Z
> warner_u:secadm_r:secadm_t:SystemLow:SystemLow-SystemHigh
> 
> Is it expected to have the high end of the range expressed as a range?
> The translation table has the following relevant entries:
> s0                             SystemLow
> s0-s15:c0.c1023      SystemLow-SystemHigh

No, that looks wrong to me as well.  cc'ing Dan Walsh of Red Hat, who
maintains mcstrans.

BTW, if you are looking for more complete MLS label translation support,
you might try the extended mcstrans posted by Joe Nall.

-- 
Stephen Smalley
National Security Agency


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