linux-kernel - Re: [PATCH 1/10] drivers/s390/char: Use kstrdup

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Date:	Mon, 17 May 2010 12:23:14 +0200
From:	Martin Schwidefsky <schwidefsky@...ibm.com>
To:	Julia Lawall <julia@...u.dk>
Cc:	Heiko Carstens <heiko.carstens@...ibm.com>, linux390@...ibm.com,
	linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 1/10] drivers/s390/char: Use kstrdup

On Fri, 14 May 2010 23:03:51 +0200 (CEST)
Julia Lawall <julia@...u.dk> wrote:

> From: Julia Lawall <julia@...u.dk>
> 
> Use kstrdup when the goal of an allocation is copy a string into the
> allocated region.  Additionally drop the now unused variable len.
> 
> 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>

Added to git390, thanks Julia.

-- 
blue skies,
   Martin.

"Reality continues to ruin my life." - Calvin.

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