linux-kernel - RE: [PATCH v3 7/7] Add a format check for an existing variable name at erasing time

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Date:	Mon, 29 Oct 2012 20:40:59 +0000
From:	Seiji Aguchi <seiji.aguchi@....com>
To:	Mike Waychison <mikew@...gle.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"Luck, Tony (tony.luck@...el.com)" <tony.luck@...el.com>,
	"Matthew Garrett (mjg@...hat.com)" <mjg@...hat.com>,
	"dzickus@...hat.com" <dzickus@...hat.com>,
	"dle-develop@...ts.sourceforge.net" 
	<dle-develop@...ts.sourceforge.net>,
	Satoru Moriya <satoru.moriya@....com>
Subject: RE: [PATCH v3 7/7] Add a format check for an existing variable name
 at erasing time

> > +                                 utf16_strlen(efi_name))) {
> > +                       /*
> > +                        * Check if an old format,
> > +                        * which doesn't support holding
> > +                        * multiple logs, remains.
> > +                        */
> > +                       if (sscanf(name, "dump-type%u-%u-%lu",
> > +                                  &type_old, &part_old, &time_old) !=
> > + 3)
> 
> This doesn't look right.  This should probably mirror the sprintf() at the top of the function using a new string, convert it to 16-bit
> Unicodeand then compare it like we do for the 4-variable version above (please ignore the fact that this driver incorrectly calls these
> strings utf16 everywhere -- that needs to be fixed).

I will fix it as well.

Seiji
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