I believe that we just need to add the following to the dirsrv policy:

prelink_exec(dirsrv_t);

We will test this to see if anything else is required.

Created attachment 528089 [details]
after loading new policy

I did the following on F-15:
1) create a file dirsrv-prelink.te with the following contents:
policy_module(dirsrv-prelink,1.0.0)

require {
    type dirsrv_t;
}

prelink_exec(dirsrv_t);

2) make -f /usr/share/selinux/devel/Makefile
3) semodule -i dirsrv-prelink.pp

After restarting dirsrv, I got the attached AVCs

Created attachment 528094 [details]
after running restorecon /usr/sbin/ns-slapd

Then I ran restorecon /usr/sbin/ns-slapd, and I got the attached AVC

(In reply to comment #2)
> Created attachment 528089 [details]
> after loading new policy
> 
> I did the following on F-15:
> 1) create a file dirsrv-prelink.te with the following contents:
> policy_module(dirsrv-prelink,1.0.0)
> 
> require {
>     type dirsrv_t;
> }
> 
> prelink_exec(dirsrv_t);
> 
> 2) make -f /usr/share/selinux/devel/Makefile
> 3) semodule -i dirsrv-prelink.pp
> 
> After restarting dirsrv, I got the attached AVCs

Perhaps we should use 'prelink_domtrans(dirsrv_t)' instead of 'prelink_exec(dirsrv_t)'.  This will make prelink run in it's own context instead of using the dirsrv_t context.  Could you try changing the policy module and testing with the prelink_domtrans macro?

(In reply to comment #4)
> (In reply to comment #2)
> > Created attachment 528089 [details]
> > after loading new policy
> > 
> > I did the following on F-15:
> > 1) create a file dirsrv-prelink.te with the following contents:
> > policy_module(dirsrv-prelink,1.0.0)
> > 
> > require {
> >     type dirsrv_t;
> > }
> > 
> > prelink_exec(dirsrv_t);
> > 
> > 2) make -f /usr/share/selinux/devel/Makefile
> > 3) semodule -i dirsrv-prelink.pp
> > 
> > After restarting dirsrv, I got the attached AVCs
> 
> Perhaps we should use 'prelink_domtrans(dirsrv_t)' instead of
> 'prelink_exec(dirsrv_t)'.  This will make prelink run in it's own context
> instead of using the dirsrv_t context.  Could you try changing the policy
> module and testing with the prelink_domtrans macro?

Yep, changing prelink_exec to prelink_domtrans in the above worked.  No messages, no AVCs, in Permissive and in Enforcing mode.

Well, this is not something what we want to allow by default.

Dan,
AFAIK we had the similar bug.

I would prefer not to transition to prelink and allow the relabel for the current domain.  prelink is a pretty powerfull domain, since it can read and write binaries.  If you could somehow fool prelink you could take a system over.  Allowing relabelto and relabelfrom types that you can read/write, I do not think is a problem.

Fixed in selinux-policy-3.9.16-44.fc15

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