linux-kernel - Re: [PATCH v2 -mm 1/2] umh && creds: convert call_usermodehelper_keys() to use subprocess

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Message-ID: <20100226202822.GC31078@hmsreliant.think-freely.org>
Date:	Fri, 26 Feb 2010 15:28:22 -0500
From:	Neil Horman <nhorman@...driver.com>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	David Howells <dhowells@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 -mm 1/2] umh && creds: convert
 call_usermodehelper_keys() to use subprocess_info->init()

On Fri, Feb 26, 2010 at 09:03:57PM +0100, Oleg Nesterov wrote:
> call_usermodehelper_keys() uses call_usermodehelper_setkeys() to change
> subprocess_info->cred in advance. Now that we have info->init() we can
> change this code to set tgcred->session_keyring in context of execing
> kernel thread.
> 
> Note: since currently call_usermodehelper_keys() is never called with
> UMH_NO_WAIT, call_usermodehelper_keys()->key_get() and umh_keys_cleanup()
> are not really needed, we could rely on install_session_keyring_to_cred()
> which does key_get() on success.
> 
> Compile tested.
> 
> Signed-off-by: Oleg Nesterov <oleg@...hat.com>
Acked-by: Neil Horman <nhorman@...driver.com>

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