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Date:      Thu, 7 Jul 2016 08:41:32 +0000
From:      Grzegorz Junka <list1@gjunka.com>
To:        freebsd-jail@freebsd.org
Subject:   Re: Effective rule sets in a jail?
Message-ID:  <2c9d10fd-35ba-5470-026d-a1483e47fcf2@gjunka.com>
In-Reply-To: <577E0A78.1040600@quip.cz>
References:  <2aeb6798-11ee-27c0-610a-d745aa322f97@gjunka.com> <CANJ8om5R-BT=heC%2BgiMTXFH8YQXhuPQZjQ_S-P1bQ1XBGS16uQ@mail.gmail.com> <577E0A78.1040600@quip.cz>

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On 07/07/2016 07:53, Miroslav Lachman wrote:
> Ultima wrote on 07/07/2016 06:04:
>> Not so. The top variable, devfs_ruleset = 4 is being set as the 
>> default for
>> all jails. The devfs_ruleset = 5 inside the brackets is changing the
>> default value.
>>
>> How to check what ruleset is mounted? That is a great question. I'm not
>> sure of an easy way to check other than verifying the /dev directory 
>> inside
>> the jail.
>
> There is no way to set more than one devfs rule to jail AFAIK.
> You can see the rule number in output of jls -s or jls -n.
>
> Miroslav Lachman
>

I was referring to this clause in the man document:

Descendant jails inherit the parent jail's devfs ruleset enforcement.

I thought that the outside rule is combined with the inside rule in the 
jail definition. But thanks for the hint about jls -s, it does shows the 
(single) active rule set (however without referring to the specific 
rules defined in devfs.rules or a combination of it).

Grzegorz



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