linux-kernel - Re: [PATCH 1/2] kstrto*: add documentation

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Date:	Fri, 13 Jul 2012 00:27:36 +0200 (CEST)
From:	Eldad Zack <eldad@...refinery.com>
To:	"J. Bruce Fields" <bfields@...ldses.org>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Joe Perches <joe@...ches.com>,
	open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] kstrto*: add documentation


On Thu, 12 Jul 2012, J. Bruce Fields wrote:
> On Fri, Jul 13, 2012 at 12:09:37AM +0200, Eldad Zack wrote:
> > 
> > On Thu, 12 Jul 2012, J. Bruce Fields wrote:
> > I am not sure if I understand _parse_integer correctly (which is called 
> > to do the actual parsing and has a very nice comment to it) - but it 
> > expects a null-terminated string, but will also stop as soon as it 
> > bumps into any other non-number character without error (please correct 
> > me I'm wrong).
> 
> I believe it, but, in _kstrtoull:
> 
> 	rv = _parse_integer(s, base, &_res);
>         if (rv & KSTRTOX_OVERFLOW)
>                 return -ERANGE;
>         rv &= ~KSTRTOX_OVERFLOW;
>         if (rv == 0)
>                 return -EINVAL;
>         s += rv;
>         if (*s == '\n')
>                 s++;
>         if (*s)
>                 return -EINVAL;
> 
> So actually it appears the string must be all numeric except possibly a final
> newline.

Ah. You're right of course. Thanks! I also noticed I missed the SGML 
templates, so I'll resend this at some point later.

Eldad
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