linux-kernel - Re: [PATCH 2/2] exec: replace call_usermodehelper_pipe with use of umh init function and resolve limit

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Date:	Mon, 15 Mar 2010 18:39:13 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	Neil Horman <nhorman@...driver.com>
Cc:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	andi@...stfloor.org
Subject: Re: [PATCH 2/2] exec: replace call_usermodehelper_pipe with use of
	umh init function and resolve limit

On 03/15, Neil Horman wrote:
>
> The first patch in this series introduced an init function to the
> call_usermodehelper api so that processes could be customized by caller.
> This patch takes advantage of that fact, by customizing the helper in
> do_coredump to create the pipe and set its core limit to one (for our
> recusrsion check).  This lets us clean up the previous uglyness in the
> usermodehelper internals and factor call_usermodehelper out entirely.
> While I'm at it, we can also modify the helper setup to look for a core
> limit value of 1 rather than zero for our recursion check
>
> Signed-off-by: Neil Horman <nhorman@...driver.com>
> CC: Oleg Nesterov <oleg@...hat.com>
> CC: Andi Kleen <andi@...stfloor.org>

Reviewed-by: Oleg Nesterov <oleg@...hat.com>

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