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Message-ID: <e354268a4efe48c9a8023a30c7292d12@AcuMS.aculab.com>
Date: Thu, 15 Jun 2023 08:06:46 +0000
From: David Laight <David.Laight@...LAB.COM>
To: 'Demi Marie Obenour' <demi@...isiblethingslab.com>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
CC: Alexey Dobriyan <adobriyan@...il.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Rasmus Villemoes <linux@...musvillemoes.dk>,
Hans de Goede <hdegoede@...hat.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Sakari Ailus <sakari.ailus@...ux.intel.com>,
"Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
Juergen Gross <jgross@...e.com>,
Stefano Stabellini <sstabellini@...nel.org>,
Oleksandr Tyshchenko <oleksandr_tyshchenko@...m.com>,
Lee Jones <lee@...nel.org>, Andy Lutomirski <luto@...nel.org>,
Thomas Gleixner <tglx@...utronix.de>,
Vincenzo Frascino <vincenzo.frascino@....com>,
Petr Mladek <pmladek@...e.com>,
Steven Rostedt <rostedt@...dmis.org>,
Sergey Senozhatsky <senozhatsky@...omium.org>
Subject: RE: [PATCH v3 0/4] Make sscanf() stricter
From: Demi Marie Obenour
> Sent: 14 June 2023 21:09
....
> > What sort of formats and data are being used?
>
> Base-10 or base-16 integers, with whitespace never being valid.
In which case sscanf() really isn't what you are looking for.
> > The "%s" format terminates on whitespace.
> > Even stroul() (and friends) will skip leading whitespace.
>
> Yes, which is a reason that strto*l() are just broken IMO.
They are not 'broken', that is what is useful most of the time.
The usual problem is that "020" is treated as octal.
> I’m trying to replace their uses in Xen with custom parsing code.
Then write a custom parser :-)
David
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