Re: Fedora UBAC feature

[Dominick Grift]

On 09/16/2010 06:41 PM, Roberto Sassu wrote:
>  I have successfully rebuilt the policy with UBAC turned on. 
>  Now, I'm writing a policy to define some new types for user's files and i need to
> setup 
>  file contexts for every user in the platform.
>  I see that the file file_contexts.homedirs uses a template in order to determine what 
> rules must be 
>  added each time a new user is created.
>  Does it is possible to add new rules in this template from a custom policy module or 
>  i need to recompile the entire policy with my modifications?
>  Thanks. 
Try it, but i think you may have to recompile the entire policy with
your modifications.

echo "policy_module(test,1.0) type bla_home_t;
userdom_user_home_content(bla_home_t)" > test.te;
echo "HOME_DIR/\.bla_test.txt --
gen_context(system_u:object_r:bla_home_t,s0" > test.fc;
make -f /usr/share/selinux/devel/Makefile test.pp
sudo semodule -i test.pp
matchpathcon ~/.bla_test.txt

>  
>  On Wednesday 15 September 2010 11:57:31 Dominick Grift wrote:
> > On 09/15/2010 11:23 AM, Roberto Sassu wrote:
> >> On Wednesday 15 September 2010 10:50:44 Roberto Sassu wrote:
> >>> Hi all
> >>>
> >>> i want to use UBAC feature in order to isolate an user from each other. 
> >>> I created two users user1_u and user2_u mapped respectively to user1 and
> user2, and 
> >>> i assigned them the role user_r.
> >>> Then i created two directories 'a' and 'b' labeled
> respectively user1_u:object_r:user_home_t:s0 
> >>> and user2_u:object_r:user_home_t:s0. What i'm expecting is that user1 can
> access 'a' and not 'b', 
> >>> viceversa for user2, but user1 is allowed to access both directories.
> >>>
> >>> --
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> >>
> >> Oh, sorry. I have not seen the UBAC variable is overwritten in the Fedora rpm
> spec file.
> >
> > Yes Fedora disabled it. It can be enabled by modifying the spec file and
> > rebuilding the rpm.
> >
> > I have it enabled and it works pretty good with some exceptions.
> >
> >> --
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> >
> >
> >