linux-kernel - Re: strncpy optimalisation? (lib/string.c)

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Message-ID: <20061210213925.GE30197@vanheusden.com>
Date:	Sun, 10 Dec 2006 22:39:26 +0100
From:	Folkert van Heusden <folkert@...heusden.com>
To:	Mitchell Blank Jr <mitch@...oth.com>
Cc:	Willy Tarreau <w@....eu>, linux-kernel@...r.kernel.org,
	kernel-janitors@...ts.osdl.org
Subject: Re: strncpy optimalisation? (lib/string.c)

> > Original code completely pads the destination with zeroes,
> > while yours only adds the last zero. Your code does what
> > strncpy() is said to do, but maybe there's a particular
> > reason for it to behave differently in the kernel
> No, the kernel's strncpy() behaves the same as the one in libc.  Run
> "man strncpy" if you don't believe me.
> In the common case where you just want to copy a string and avoid
> overflow use strlcpy() instead

Oops you're right! Maybe someone should take a look if the strncpy's
should be replaced by strlcpy's then because it is (ought to be) faster.


Folkert van Heusden

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