linux-kernel - Re: [PATCH 7/10] security/selinux/ss: Use kstrdup

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Message-ID: <1273867768.2826.30.camel@localhost>
Date:	Fri, 14 May 2010 16:09:28 -0400
From:	Eric Paris <eparis@...hat.com>
To:	Julia Lawall <julia@...u.dk>
Cc:	Stephen Smalley <sds@...ho.nsa.gov>,
	James Morris <jmorris@...ei.org>,
	Eric Paris <eparis@...isplace.org>,
	linux-security-module@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 7/10] security/selinux/ss: Use kstrdup

On Fri, 2010-05-14 at 21:30 +0200, Julia Lawall wrote:
> From: Julia Lawall <julia@...u.dk>
> 
> Use kstrdup when the goal of an allocation is copy a string into the
> allocated region.
> 
> The semantic patch that makes this change is as follows:
> (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @@
> expression from,to;
> expression flag,E1,E2;
> statement S;
> @@
> 
> -  to = kmalloc(strlen(from) + 1,flag);
> +  to = kstrdup(from, flag);
>    ... when != \(from = E1 \| to = E1 \)
>    if (to==NULL || ...) S
>    ... when != \(from = E2 \| to = E2 \)
> -  strcpy(to, from);
> // </smpl>
> 
> Signed-off-by: Julia Lawall <julia@...u.dk>

Acked-by: Eric Paris <eparis@...hat.com>


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