linux-kernel - Re: [kernel-hardening] Re: [PATCH] video: constify geode ops structures

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Message-ID: <20151109163910.GU18797@mwanda>
Date:	Mon, 9 Nov 2015 19:39:10 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Julia Lawall <julia.lawall@...6.fr>
Cc:	Joe Perches <joe@...ches.com>, kernel-janitors@...r.kernel.org,
	linux-kernel@...r.kernel.org, Kees Cook <keescook@...omium.org>,
	kernel-hardening@...ts.openwall.com
Subject: Re: [kernel-hardening] Re: [PATCH] video: constify geode ops
 structures

On Mon, Nov 09, 2015 at 02:50:47PM +0000, Julia Lawall wrote:
> 
> 
> On Mon, 9 Nov 2015, Dan Carpenter wrote:
> 
> > Actually, it looks like Emese Revfy is going to merge the GCC plugin
> > constify stuff sooner rather than later so maybe adding all these consts
> > isn't going to be needed.
> 
> Is there any advantage of const over the plugin?  The consts are easy to
> add.

Less syntax.  It's a whitelist instead of blacklist so we don't miss
anything.

> 
> Does the plugin help for structures that have non-function fields?

Yeah.  You can mark a struct as __do_const in the .h file and it will
make them all const automatically.

regards,
dan carpenter

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