On 09/16/2013 08:07 AM, Dominick Grift wrote:
> On Mon, 2013-09-16 at 07:57 -0400, Stephen Smalley wrote:
>> On 09/16/2013 03:35 AM, Dominick Grift wrote:
>>> On Sun, 2013-09-15 at 12:54 -0400, Joshua Brindle wrote:
>>>> Dominick Grift wrote:
>>>>> I was explaining the concept of (type) attributes using the domain type
>>>>> attribute as an example on IRC, and a sharp person embarrassed me by
>>>>> noting that the following rule returns nothing where he would have
>>>>> expected something:
>>>>>
>>>>> sesearch -A -d -s domain -c process -p fork
>>>>>
>>>>> Why does this not return anything? Is is because the target is "self"?
>>>>
>>>> "self" is resolved by the compiler, it isn't present in the kernel binary.
>>>>
>>>> You specified -d "do not search for type's attributes" and then gave an
>>>> attribute as the source. I'm not sure what the intended behavior was but
>>>> excluding the -d gave me back a large set of rules.
>>>
>>> The result i expected would have been the exact (direct) rule as
>>> specified in the policy:
>>>
>>> allow domain self : process fork;
>>>
>>> So not the large list that one gets without the -d option because that
>>> is not the direct rule
>>
>> direct means "granted to an individual type, not via attribute". So it
>> omits any rules written in terms of attributes.
>>
>
> Thanks, alright this is probably last attempt to understand this but really that is not my experience:
>
> Take for example this comparison:
>
> # sesearch -A -d -t file_type | head -n 3
> Found 383 semantic av rules:
> allow prelude_lml_t file_type : filesystem getattr ;
> allow files_unconfined_type file_type : filesystem { mount remount
> unmount getattr relabelfrom relabelto transition associate quotamod
> quotaget } ;
>
> # sesearch -A -t file_type | head -n 3
> Found 40415 semantic av rules:
> allow mscan_var_run_t mscan_var_run_t : filesystem associate ;
> allow xguest_usertype tetex_data_t : lnk_file { read getattr } ;
>
> The former does not "expand" the target type attribute whereas the
> latter expands the type attribute
Interesting, I guess that's a bug to report to the setools folks.
So does it only behave differently on self rules or does it behave
differently on source vs target?
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