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Re: new module 'strlcpy'

From: Tim Rühsen
Subject: Re: new module 'strlcpy'
Date: Thu, 28 Sep 2017 12:08:02 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0

On 09/28/2017 08:29 AM, Dmitry Selyutin wrote:
> How about strscpy from the Linux kernel?
> https://www.kernel.org/doc/htmldocs/kernel-api/API-strscpy.html

As an application library & programmer, I need this (thanks, Dmitry)
*and* strlcpy. A gnulib module would reduce configure.ac code and
several checks - and thus would be very welcome (thanks, Bruno).

In production code strlcpy replaces snprintf with format string "%s" -
the return value (length of source string) often comes in handy for
malloc fallbacks.

But I already stumbled into the side-effects of strlcpy in the past.
Determining the length of the source is sometimes dangerous and may lead
to unexpected CPU cycle waste. So this strscpy function seems to be a
good choice if you are not interested in the source length.

With Best Regards, Tim

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