linux-kernel - Re: [PATCH] staging: lustre: lustre: libcfs: debug.c: Cleaning up unnecessary use of memset in conjunction with strncpy

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Message-ID: <20140915082346.GB17875@mwanda>
Date:	Mon, 15 Sep 2014 11:23:46 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Peng Tao <bergwolf@...il.com>, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: lustre: lustre: libcfs: debug.c: Cleaning up
 unnecessary use of memset in conjunction with strncpy

On Sun, Sep 14, 2014 at 06:03:16PM +0200, Rickard Strandqvist wrote:
> Using memset before strncpy just to ensure a trailing null
> character is an unnecessary double writing of a string
> 

You really should make a function which pads and NUL terminates.

I've said this before, of course, but you haven't even tried.

I can't get excited about these cleanups which open code NUL termination
every where.  They are risky and have introduced bugs before.

regards,
dan carpenter
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