[PATCH v2] Implement strlcpy [BZ #178]

[Florian Weimer]

On 09/15/2014 03:47 PM, Florian Weimer wrote:
> This patch adds an implementation of strlcpy.
>
> I think it shows that we can do much better than custom implementations
> in libbsd and random applications:
>
> * This version is based on optimized strnlen and memcpy implementation.

It's now strlen, as required.

>
> * It has fortify support.
>
> * In fortify mode, there a link-time warnings for common misuses.
>    (The location of the warning could be improved,
>    but this is a GCC issue.)
>
> If this is patch is accepted, I will work on an implementation of
> strlcat along similar lines.

This version fixes the return value (oops) and adjusts the documentation 
to avoid the phrase “more useful”.

I misremembered what the GNU coding standards say about dynamically 
sized buffers.  As far as I can tell, they recommend it not in general, 
but only as a way to avoid unintentional copyright infringement.  That's 
why I didn't add a reference to the coding standards.

-- 
Florian Weimer / Red Hat Product Security
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