linux-kernel - Re: [PATCH 2/3] string: provide strscpy() and strscpy

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Message-ID: <20150506150140.GB12986@mwanda>
Date:	Wed, 6 May 2015 18:01:40 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Chris Metcalf <cmetcalf@...hip.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	Fabian Frederick <fabf@...net.be>,
	Randy Dunlap <rdunlap@...radead.org>,
	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>,
	gregkh@...uxfoundation.org, Peter Zijlstra <peterz@...radead.org>,
	"David S. Miller" <davem@...emloft.net>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Sam Ravnborg <sam@...nborg.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	"Theodore Ts'o" <tytso@....edu>,
	Grant Likely <grant.likely@...aro.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-arch@...r.kernel.org
Subject: Re: [PATCH 2/3] string: provide strscpy() and strscpy_truncate()

On Thu, Apr 30, 2015 at 12:01:16PM -0400, Chris Metcalf wrote:
> +ssize_t strscpy(char *dest, const char *src, size_t count)
> +{
> +	ssize_t res = strscpy_truncate(dest, src, count);
> +	if (res < 0 && count != 0)
> +		dest[0] = '\0';

How is this better than returning a truncated string?  Is it just
because the caller was naughty so we give them a spanking?

> +	return res;
> +}

regards,
dan carpenter
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