netdev - Re: [PATCH] skbuff: make skb_put

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 15 Jun 2017 15:38:29 -0700
From:   Joe Perches <joe@...ches.com>
To:     Johannes Berg <johannes@...solutions.net>,
        David Miller <davem@...emloft.net>
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH] skbuff: make skb_put_zero() return void

On Fri, 2017-06-16 at 00:23 +0200, Johannes Berg wrote:
> On Thu, 2017-06-15 at 15:17 -0700, Joe Perches wrote:
> 
> > Here's a script that does the conversion.
> > 
> > $ /usr/bin/git grep -P --name-only
> > "\*\s*skb_put\s*\(\s*([\w\.\[\]\>\-]+)\s*,\s*1\s*\)\s*=\s*([^;]+);" |
> > \
> >   xargs perl -p -i -e 's/\*\s*skb_put\s*\(\s*([\w\.\[\]\>\-
> > ]+)\s*,\s*1\s*\)\s*=\s*([^;]+);/skb_put_char(\1, \2);/'
> 
> Btw, this is incomplete - you have "\*\s*" at the beginning, but there
> are cases like
> 
>  *(skb_put(skb, 1)) = c;
> 
> where you have extra parentheses. By just adding them to the spatch, it
> finds both cases trivially.
> 
> I'm much more comfortable using spatch to do things like this.

Knock your self out.
Whatever floats your boat.
Have at it.
Go get 'em.

etc...

There are also some uses like:

	memcpy(skb_put(h5->rx_skb, 1), byte, 1);

that could also be converted.

cheers, Joe