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Date: Mon, 7 Dec 2009 14:04:33 +0100
From: Luigi Rizzo <rizzo@iet.unipi.it>
To: Dag-Erling Sm??rgrav <des@des.no>
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Cc: svn-src-head@freebsd.org, Ed Schouten <ed@80386.nl>,
	svn-src-all@freebsd.org, src-committers@freebsd.org,
	Hajimu UMEMOTO <ume@freebsd.org>
Subject: Re: the need for safe dynamic string libraries
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On Mon, Dec 07, 2009 at 11:56:18AM +0100, Dag-Erling Sm??rgrav wrote:
> Luigi Rizzo <rizzo@iet.unipi.it> writes:
> > What do you mean exactly ?
> 
> When libsbuf was ported to userland, sbuf_printf() was pessimized due to
> the limitations of libc's printf().  This makes certain parts of

but, isn't this an implementation detail ? What prevents the same
API to have two different implementation, one for kernel, one for userland ?

cheers
luigi

> pseudofs extremely inefficient: for instance, if you read from a
> /proc/whatever that's backed by an sbuf, it has to generate the entire
> file even if you only asked for a small chunk at a large offset.
> 
> DES
> -- 
> Dag-Erling Sm??rgrav - des@des.no