Re: XATTR_PAX migration

On 09/10/2013 10:40 AM, "Tóth Attila" wrote:
> 2013.Szeptember 10.(K) 16:00 időpontban Anthony G. Basile ezt írta:
>> On 09/10/2013 08:52 AM, "Tóth Attila" wrote:
>>> 2013.Szeptember 10.(K) 13:50 időpontban Anthony G. Basile ezt írta:
>>>> On 09/09/2013 06:06 PM, Alex Efros wrote:
>>>>> Hi!
>>>>>
>>>>> On Mon, Sep 09, 2013 at 05:26:57PM -0400, Anthony G. Basile wrote:
>>>>>> install is being wrapped by install.py.  As a result every instance
>>>>>> of
>>>>>> install mean invoking the python interpreter.  With lots and lots of
>>>>>> installs, this adds up to being very slow.
>>>>>
>>>>> Why not just add a patch for `install`? Even if you will just exec
>>>>> `paxctl-ng` at end of `install` it still will be much faster.
>>>>>
>>>>
>>>> We decided that changing the default behavior of install was not a good
>>>> idea.  See [1]
>>>>
>>>> There are places where we have to do pax markings before install. We
>>>> could do them twice, that was the other option.  When I wrote the
>>>> python
>>>> wrapper, I had no idea it was going to be this slow.
>>>>
>>>> Ref
>>>> [1] https://bugs.gentoo.org/show_bug.cgi?id=470660
>>>>
>>>> --
>>>> Anthony G. Basile, Ph. D.
>>>> Chair of Information Technology
>>>> D'Youville College
>>>> Buffalo, NY 14201
>>>> (716) 829-8197
>>>>
>>>
>>> Dear blueness: what is the future perspective?
>>>
>>
>> Well right now, I don't have a hard plan.  I'll need to speak with Zac
>> Medico how he might want to replace that wrapper.  It should be possible
>> to just drop in a compiled version of install with our patch that
>> preserves *just* user.pax.flags.
>
> Sounds great. I'll surely test it as soon as it appears in the hardened
> overlay or such.
>
> Thx: Dw.
>

Actually that's probably the way to start this.  I can put a version on 
install on the hardened overlay name it something like install-portage. 
  It will *not* install over install, but install somewhere in the 
portage path where we now have install.py.  Then we can test my patch 
against install.


-- 
Anthony G. Basile, Ph. D.
Chair of Information Technology
D'Youville College
Buffalo, NY 14201
(716) 829-8197