On 03/11/2009 05:00 PM, Stephen Smalley wrote:
> On Wed, 2009-03-11 at 16:49 -0400, Daniel J Walsh wrote:
>> -----BEGIN PGP SIGNED MESSAGE-----
>> Hash: SHA1
>>
>> Joe Nall wrote:
>>> On Mar 11, 2009, at 2:35 PM, Daniel J Walsh wrote:
>>>
>>>> On 03/11/2009 12:15 PM, Joe Nall wrote:
>>>>> I need to add login mappings in python firstboot modules during system
>>>>> configuration. In my first module a simple:
>>>>>
>>>>> seobject.loginRecords().add(username, "siterep_u",
>>>>> "SystemLow-SystemHigh")
>>>>>
>>>>> works. In subsequent modules, I get an exception:
>>>>>
>>>>> libsemanage.enter_rw: this operation requires a transaction
>>>>> libsemanage.enter_rw: could not enter read-write section
>>>>> Traceback (most recent call last):
>>>>> File "./t", line 6, in<module>
>>>>> seobject.loginRecords().add("test3", "sysadm_u", "SystemLow-SystemHigh")
>>>>> File "/usr/lib64/python2.5/site-packages/seobject.py", line 442, in add
>>>>> raise error
>>>>> ValueError: Could not add login mapping for test3
>>>>>
>>>>> What is the right way to do this?
>>>>>
>>>>> joe
>>>>>
>>>>>
>>>>> --
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>>>>> with
>>>>> the words "unsubscribe selinux" without quotes as the message.
>>>> Probably an MLS issue.  firtstboot is running in a context that is not
>>>> allowed to lock/manage selinux.
>>> I'm installing in permissive and switching to enforcing after firstboot.
>>> You are correct that firstboot_t doesn't have the policy for all the
>>> stuff I'm trying to do yet.
>>>
>>>> You probably should exec semanage rather then calling seobject so you
>>>> could do a transition and not have to give a huge app like first boot
>>>> the ability to manage security policy.
>>> That is what is installing right now. I would still like an
>>> explanation/code snippet of correct usage for future use
>>>
>>> joe
>>>
>>>
>> This works on F10 Targeted policy
>>
>> # python -c "import seobject; seobject.loginRecords().add("pwalsh",
>> "staff_u", "s0")
>> # python -c 'import seobject; seobject.loginRecords().delete("pwalsh")'
>>
>> Could it be a translation problem?
>
> Try running multiple calls within the same python interpreter.
> I think seobject.py isn't using libsemanage correctly.  For example, in
> add(), you do:
>                         self.begin()
>                          self.__add(name, sename, serange)
>                          self.commit()
> but begin() only ever invokes semanage_begin_transaction() the very
> first time:
>         def begin(self):
>                 if self.transaction:
>                        return
>                 rc = semanage_begin_transaction(self.sh)
>
> So after the first commit(), you'll start failing.
>
I think this patch fixes the transaction patch in semanage.