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Date:      Tue, 30 Aug 2005 17:32:52 +0400 (MSD)
From:      Michael Bushkov <bushman@rsu.ru>
To:        Dan Nelson <dnelson@allantgroup.com>
Cc:        Jacques Vidrine <nectar@freebsd.org>, freebsd-hackers@freebsd.org, Doug Barton <dougb@freebsd.org>, Brooks Davis <brooks@freebsd.org>, freebsd-current@freebsd.org
Subject:   Re: [PATCH] caching daemon release and nsswitch patches
Message-ID:  <20050830172127.E5409@stinger.cc.rsu.ru>
In-Reply-To: <20050829163025.GA25664@dan.emsphone.com>
References:  <20050827170633.Y5409@stinger.cc.rsu.ru> <43123F3B.8070002@FreeBSD.org> <20050829115740.N5409@stinger.cc.rsu.ru> <20050829163025.GA25664@dan.emsphone.com>

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On Mon, 29 Aug 2005, Dan Nelson wrote:

We can't ensure that, I guess. In the upcoming version (before the 1st of 
September), the cache would be per-user. This would solve all the security 
problems. In a little while, I'll implement the ability for cached to act 
as nscd. So you'll be able to choose the behaviour.

> In the last episode (Aug 29), Michael Bushkov said:
>> There is some information in my project's description here:
>> http://wikitest.freebsd.org/moin.cgi/NsswitchAndCachingTechnicalDetails
>
> One question that comes to mind:
>
> It looks like the end-user application is still responsible for
> performing nss lookups.  How do you ensure that one user can't poison
> the cache and cause problems for other users?  Could cached do all nss
> operations itself (making it more like nscd in other OSes)?
>
> --
> 	Dan Nelson
> 	dnelson@allantgroup.com
>

With best regards,
Michael Bushkov
Rostov State University



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