Re: semanage help

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On Thu, 2008-10-23 at 13:41 -0500, LC Bruzenak wrote:
> On Thu, 2008-10-23 at 14:00 -0400, Stephen Smalley wrote:
> > On Thu, 2008-10-23 at 13:29 -0400, Daniel J Walsh wrote:
> > > LC Bruzenak wrote:
> > > > On Thu, 2008-10-23 at 13:10 -0400, Daniel J Walsh wrote:
> > > > ...
> > > >> On Rawhide it seems to work
> > > >>
> > > >> # /usr/sbin/semanage fcontext -a -t prelude_spool_t -r s0:c0.c1023
> > > >> '/var/spool/prelude(/.*)?'
> > > >> # restorecon -R -v /var/spool/prelude/
> > > >> restorecon reset /var/spool/prelude context
> > > >> system_u:object_r:prelude_spool_t:s0->system_u:object_r:prelude_spool_t:s0:c0.c1023
> > > >>
> > > >>
> > > >> So I will patch policycoreutils.
> > > >>
> > > > 
> > > > Thanks Dan!
> > > > 
> > > > LCB.
> > > > 
> > > Of course this is totally not intuitive to the user.
> > > 
> > > He really wants to modify and existing fcontext so he needs to add a new
> > > conflicting one.
> > > 
> > > This command should really be fixed to check if an exising global or
> > > local exist,
> > > 
> > > if a local exists it should modify if a global exists it should add.
> > 
> > I think semanage port handles that situation correctly.  __modify uses
> > the _exists interface to check existence (whether in policy or local),
> > and uses the modify_local interface to update (which internally will
> > fall back to an add if not already locally defined).
> > 
> 
> It didn't seem to work this way with the patch - I could only add it
> (then modify):

I was saying that it works that way for semanage port already (not
fcontext), so Dan can use that as an example of how to make it work for
fcontext.

> 
> [root@v1 ~]# /usr/sbin/semanage fcontext -m -t prelude_spool_t -r s0:c0.c1023 '/var/spool/prelude(/.*)?'
> /usr/sbin/semanage: File context for /var/spool/prelude(/.*)? is not defined
> 
> [root@v1 ~]# rpm -qv policycoreutils
> policycoreutils-2.0.57-5.fc10.i386
> 
> [root@v1 ~]# /usr/sbin/semanage fcontext -a -t prelude_spool_t -r s0:c0.c1023 '/var/spool/prelude(/.*)?'
> [root@v1 ~]# /usr/sbin/semanage fcontext -m -r s0:c0.c1022 '/var/spool/prelude(/.*)?'
> 
> - and so far restorecon works as expected.
> 
> So to me it seems like the man page needs updating if this behavior is
> desired (only local fcontext changes allowed). Seems fine to me; only
> thing is the last one in the list wins I guess, vice only last-occurring
> duplicates displayed.:
> 
> [root@v1 ~]# /usr/sbin/semanage fcontext -l | grep prelude
> ...
> /var/spool/prelude(/.*)?                           all files          system_u:object_r:prelude_spool_t:s0 
> ...
> /var/spool/prelude(/.*)?                           all files          system_u:object_r:prelude_spool_t:s0:c0.c1022 
> 
> Main thing for me is that it works so I can resume testing.
> Thanks again!
> 
> LCB.
> 
-- 
Stephen Smalley
National Security Agency


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