linux-kernel - Re: [PATCH 2.6.24] Add new string functions real_strtoul and change kernel params to use them

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Message-Id: <1201797017.6500.16.camel@yangyi-dev.bj.intel.com>
Date:	Fri, 01 Feb 2008 00:30:17 +0800
From:	Yi Yang <yi.y.yang@...el.com>
To:	Randy Dunlap <randy.dunlap@...cle.com>
Cc:	gregkh@...e.de, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org
Subject: Re: [PATCH 2.6.24] Add new string functions real_strtoul and
	change kernel params to use them

On Thu, 2008-01-31 at 09:03 -0800, Randy Dunlap wrote:
> On Thu, 31 Jan 2008 09:18:22 +0800 Yi Yang wrote:
> 
> > Currently, for every sysfs node, the callers will be responsible for
> > implementing store operation, so many many callers are doing duplicate
> > things to validate input, they have the same mistakes because they are
> > calling simple_strtol/ul/ll/ull, especially for module params, they are
> > just numeric, but you can echo such values as 0x1234xxx, 07777888 and
> > 1234aaa, for these cases, module params store operation just ignores
> > successive invalid char and converts prefix part to a numeric although
> > input is actually invalid.
> > 
> > This patch tries to fix the aforementioned issues and implements real_strtox
> > serial functions, kernel/params.c uses them to strictly validate input,
> > so module params will reject such values as 0x1234xxxx and returns an error:
> 
> How about a prefix of safe_ or strict_ or something other than real_?
> real_ sounds too much like a real number function string parser.
> 
I named it as strict_ at the beginning, but it results in some alignment
issues checkpatch.pl will always warn, i don't know if warnings will
make the patch out of the door.

In kernel/params.c, STANDARD_PARAM_DEF(a function definition macro) will
be over 80 chars, is it correct coding style to split it to two lines?

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