John Johansen john.johansen at canonical.com
Wed Sep 9 18:47:25 UTC 2009

Kees Cook wrote:
> Hi,
> On Wed, Sep 09, 2009 at 02:13:24PM -0400, Etienne Goyer wrote:
>> Limits that you set in /etc/security/limits.conf are applied by the
>> pam_limits.so PAM module.  The PAM stack is configured in the various
>> files you can find under /etc/pam.d/.  Explaining how to configure PAM
>> would be a bit long, so I refer you to the Linux PAM System
>> Administrator Guide I linked to in my previous post for further details.
>> That being said, I am afraid my last post was misleading, because PAM do
>> not apply to daemons and services started by init AFAIK.  As such, I am
>> not sure how you would impose ulimit on daemon, but that is surely not
>> through /etc/security/limits.conf.  I will leave it to someone else to
>> suggest a proper approach for your use-case.
> While start-stop-daemon does not yet support[1] setting ulimits, you
> should be able to add a ulimit call to your service's init script
> directly.  Though that is a bit of a hack.  :)
> In the future, once services have migrated to using Upstart, you can
> set limits more easily.  (See "limit"[2])
Also if you want to confine the service you can set the ulimit using AppArmor.

In the profile you can add the line

  set rlimit nofile 3200,


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