linux-kernel - Re: [RFC PATCH] kmod: add ability to swap root in usermode helper

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Message-ID: <519C5EF1.9040802@parallels.com>
Date:	Wed, 22 May 2013 10:00:17 +0400
From:	Stanislav Kinsbursky <skinsbursky@...allels.com>
To:	Oleg Nesterov <oleg@...hat.com>
CC:	"J. Bruce Fields" <bfields@...ldses.org>,
	<akpm@...ux-foundation.org>, <jlayton@...hat.com>,
	<lucas.demarchi@...fusion.mobi>, <rusty@...tcorp.com.au>,
	<linux-kernel@...r.kernel.org>, <viro@...iv.linux.org.uk>,
	<bharrosh@...asas.com>, <devel@...nvz.org>
Subject: Re: [RFC PATCH] kmod: add ability to swap root in usermode helper

21.05.2013 20:29, Oleg Nesterov пишет:
> On 05/21, J. Bruce Fields wrote:
>>
>> On Tue, May 21, 2013 at 05:28:36PM +0200, Oleg Nesterov wrote:
>>>
>>> OK, so do not do this. Export the new helper.
>>
>> You mean, export umh_set_fs_root() in the above?
>>
>> That might be OK.
>
> Yes, or even call_usermodehelper_root().
>
> I didn't argue with the new helper that, yes, has the additional
> argument. Although personally I think it would be better to not
> add it into kmod.c (until it has more users), but I am not sure
> there is a better place somewhere in nfs code. Whatever is more
> convenient for you.
>
> To me this looks like call_usermodehelper_keys().
>
> Oleg.
>

Thanks, Oleg. Sounds reasonable.

-- 
Best regards,
Stanislav Kinsbursky
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