[systemd-devel] users and per user limits (tmpfs)

Michał Zegan webczat_200 at poczta.onet.pl
Tue Apr 28 03:03:11 PDT 2015


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(sorry, I haven't sent a reply to the list)
What about namespacing and mounting tmpfs per user? You can specify a
filesystem size when mounting tmpfs can't you?

W dniu 2015-04-28 o 11:48, Michał Piotrowski pisze:
> Hi,
> 
> 2015-04-28 11:39 GMT+02:00 Lennart Poettering <mzerqung at 0pointer.de
> <mailto:mzerqung at 0pointer.de>>:
> 
> On Tue, 28.04.15 00:55, Michał Zegan (webczat_200 at poczta.onet.pl 
> <mailto:webczat_200 at poczta.onet.pl>) wrote:
> 
>> Hello.
>> 
>> I have discovered how to add resource limits for the user, like 
>> how much memory the user can use, or how much cpu time. Here is 
>> the problem: /tmp seems a way for the user to circumvent this 
>> restriction. Is there a way to protect it too?
> 
> Nope. There have been discussions for adding quota to tmpfs, but 
> this lead nowhere.
> 
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=693253
> 
> 
> 
> You can disable tmpfs-on-/tmp, and run it on xfs or ext4 instead 
> and use classic per-user quota though.
> 
> Lennart
> 
> -- Lennart Poettering, Red Hat 
> _______________________________________________ systemd-devel 
> mailing list systemd-devel at lists.freedesktop.org 
> <mailto:systemd-devel at lists.freedesktop.org> 
> http://lists.freedesktop.org/mailman/listinfo/systemd-devel
> 
> 
> 
> 
> -- Best regards, Michal
> 
> http://eventhorizon.pl/
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