rsyncd can't open log file, but there are no avc messages

[Paul Howarth]

On Tue, 08 Jul 2008 16:36:13 -0400
Johnny Tan <linuxweb at gmail.com> wrote:

> Paul Howarth wrote:
> > On Mon, 07 Jul 2008 13:01:55 -0400
> > Johnny Tan <linuxweb at gmail.com> wrote:
> > 
> >> Johnny Tan wrote:
> >>> I'm stumped.
> >>>
> >>> I run a Java app called Solr, which does search indexing. My solr
> >>> server creates the index, then I have a bunch of solr clients that
> >>> rsync that index over.
> >>>
> >>> The rsync itself is fine, that works. The problem is it won't
> >>> write to the appropriate logfile, which is:
> >>> /opt/solr/logs/rsyncd.log
> >>>
> >>> /opt/solr/logs is a symlink to /var/log/store.
> >> A little bit more information that might help solve this...
> >>
> >> If I remove the symlink, and /opt/solr/bin/rsyncd-start runs 
> >> (which basically starts rsyncd), then rsyncd can write to 
> >> /opt/solr/logs/rsyncd.log with no problems.
> >>
> >> If I put the symlink back in (to /var/log/store), then it 
> >> fails (again, with no AVC messages).
> >>
> >> The only difference I can see between /opt/solr/logs (as a 
> >> directory) and /var/log/store is the default contexts, for 
> >> /opt/solr/logs, it's root:object_r:usr_t, for /var/log/store 
> >> it's root:object_r:var_log_t
> >>
> >> When I put the symlink back, I tried changing the context of 
> >> /var/log/store to root:object_r:usr_t to match 
> >> /opt/solr/logs, but that doesn't seem to make a difference.
> >>
> >> Max, a list member, suggested offline that it might have to 
> >> do with type_transition, which does seem to make sense.
> >>
> >> I tried both:
> >> type_transition rsync_t var_log_t : file rsync_log_t;
> >> and
> >> type_transition rsync_t var_log_t : file usr_t;
> >>
> >> But neither worked (I have all the appropriate allows for 
> >> those contexts).
> >>
> >>
> >> Am I going down the right path here (type_transition)? Or 
> >> does anyone else have a suggestion in terms of how the 
> >> symlink can be used?
> > 
> > 
> > Can you try this policy module:
> > 
> > ::::::::::::::
> > solr.fc
> > ::::::::::::::
> > /var/log/store(/.*)? gen_context(system_u:object_r:rsync_log_t,s0)
> 
> ==
> 
> # semanage fcontext -a -t rsync_log_t "/var/log/store(/.*)?"
> libsepol.context_from_record: type rsync_log_t is not defined
> libsepol.context_from_record: could not create context structure
> libsemanage.validate_handler: invalid context 
> system_u:object_r:rsync_log_t:s0 specified for 
> /var/log/store(/.*)? [all files]
> libsemanage.dbase_llist_iterate: could not iterate over records
> /usr/sbin/semanage: Could not add file context for 
> /var/log/store(/.*)?
> 
> ==
> 
> It seems rsync_log_t is not defined. Can I somehow do this 
> without having rsync_log_t?
> 
> It works fine when I don't use a symlink, so I assume 
> rsync_log_t is not necessary for this to work.
> 
> But I need the symlink because I need the files to be stored 
> in /var/log/store, as opposed to /opt/solr/logs.

I thought from earlier messages you were on RHEL 5? I've tested this
module with CentOS 5.2 and it loads just fine.

Which policy version are you using?

Paul.