[refpolicy] fcontexts for XDG_RUNTIME_DIR /run/user

[cpebenito@tresys.com (Christopher J. PeBenito)]

On 4/13/2016 12:18 PM, Miroslav Grepl wrote:
> On 04/12/2016 07:57 PM, Christopher J. PeBenito wrote:
>> On 4/12/2016 1:02 PM, Jason Zaman wrote:
>>> On Tue, Apr 12, 2016 at 10:43:33AM -0400, Christopher J. PeBenito wrote:
>>>> On 4/11/2016 1:11 PM, Jason Zaman wrote:
>>>>> Hi all,
>>>>>
>>>>> I submitted patches to add USERID and USERNAME to genhomedircon[1] and
>>>>> am now trying to fix refpol to work with it.
>>>>>
>>>>> What labels do we want for things in /run/user?
>>>>> Currently refpol has the following which seems pretty weird:
>>>>> /var/run/user(/.*)? gen_context(system_u:object_r:var_auth_t,s0)
>>>>> It was originally added from fedora but fedora has since dropped that.
>>>>>
>>>>> fedora now has:
>>>>> /var/run/user(/.*)? gen_context(system_u:object_r:user_tmp_t,s0)
>>>>>
>>>>> The problem with that fcontext is that users have write perms towards
>>>>> user_tmp_t so they would be able to do other things in /run/user/
>>>>> instead of only within /run/user/%{USERID}/.
>>>>>
>>>>> I think we should have some kind of _root_t and _home_t like how things
>>>>> are for /home and /home/USERNAME
>>>>
>>>> This makes sense.
>>>
>>> so this?
>>> /var/run/user system_u:object_r:xdg_runtime_root_t:s0
>>> /var/run/user/1000 staff_u:object_r:xdg_runtime_home_t:s0
>>>
>>> Once the patches get merged in to the userspace tools I will start
>>> preparing patches for this.
>>>
>> [...]
>>>> Which group (if any) specified how /run/user/UID should be used? XDG?
>>>
>>> https://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
>>>
>>> I think systemd started it, but ConsoleKit2 supports it too and it is
>>> officially a freedesktop/XDG spec.
>>
>> I think it makes more sense for these not to be XDG-named types, since
>> XDG isn't the only one that uses it.  Perhaps something like
>> user_runtime_root_t and user_runtime_t, or maybe user_runtime_t and
>> user_tmp_t (I'm open to other suggestions).
>>
> 
> Ok, this is again https://github.com/systemd/systemd/issues/257.

I don't see how this is related.  This isn't about systemd's behavior,
but simply choosing what are the correct .fc entries for this directory
structure.

-- 
Chris PeBenito
Tresys Technology, LLC
www.tresys.com | oss.tresys.com