netdev - Re: [RFC] ipv6: Change %pI6 format to output compacted addresses?

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Date:	Thu, 13 Aug 2009 16:30:40 +0200
From:	Jens Rosenboom <jens@...one.net>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	Linux Network Developers <netdev@...r.kernel.org>
Subject: Re: [RFC] ipv6: Change %pI6 format to output compacted addresses?

On Thu, 2009-08-13 at 10:18 -0400, Christoph Hellwig wrote:
> On Wed, Aug 12, 2009 at 05:39:20PM +0200, Jens Rosenboom wrote:
> > Currently the output looks like 2001:0db8:0000:0000:0000:0000:0000:0001
> > which might be compacted to 2001:db8::1. The code to do this could be
> > adapted from inet_ntop in glibc, which would add about 80 lines to
> > lib/vsprintf.c. How do you guys value the tradeoff between more readable
> > logging and increased kernel size?
> 
> A little note:  if you borrow code from glibc always make sure it's from
> an old enough version that is still GPLv2+ licensed.

The code for inet_ntop has as comment

 * author:
 *      Paul Vixie, 1996.

while the whole file is

Copyright (c) 1996-1999 by Internet Software Consortium.

so it should probably be old enough. But it also doesn't look too nice
to me, so I'll try to go without it for now.

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