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

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Date:	Mon, 08 Mar 2010 13:19:28 +0000
From:	David Howells <dhowells@...hat.com>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	dhowells@...hat.com, Andrew Morton <akpm@...ux-foundation.org>,
	Andi Kleen <andi@...stfloor.org>,
	Neil Horman <nhorman@...driver.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH,RESEND -mm 1/2] umh && creds: convert call_usermodehelper_keys() to use subprocess_info->init()

Oleg Nesterov <oleg@...hat.com> wrote:

> (on top of kmod-replace-call_usermodehelper_pipe-with-use-of-umh-init-function-and-resolve-limit.patch)
> 
> 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.
> 
> Signed-off-by: Oleg Nesterov <oleg@...hat.com>
> Acked-by: Neil Horman <nhorman@...driver.com>

Acked-by: David Howells <dhowells@...hat.com>
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