Re: Is this a bug in sesearch, or ...?

[Dominick Grift <dominick.grift@gmail.com>]

On Mon, 2013-09-16 at 14:07 +0200, 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
> 

Scratch the above. it now starts to sink in slowly here ( must be monday
)

So in that case would be nice if we have the functionality to query type
attribute av rules without them being expanded.

> 
> 
> 
> 
> 
> 



--
This message was distributed to subscribers of the selinux mailing list.
If you no longer wish to subscribe, send mail to majordomo@tycho.nsa.gov with
the words "unsubscribe selinux" without quotes as the message.