linux-kernel - Re: [PATCH v4 1/3] lib/vsprintf: Add support for generic FourCCs by extending %p4cc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <aAdsbgx53ZbdvB6p@smile.fi.intel.com>
Date: Tue, 22 Apr 2025 13:16:14 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: Aditya Garg <gargaditya08@...e.com>, Hector Martin <marcan@...can.st>,
	alyssa@...enzweig.io, Petr Mladek <pmladek@...e.com>,
	Sven Peter <sven@...npeter.dev>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	Aun-Ali Zaidi <admin@...eit.net>,
	Maxime Ripard <mripard@...nel.org>, airlied@...hat.com,
	Simona Vetter <simona@...ll.ch>,
	Steven Rostedt <rostedt@...dmis.org>,
	Rasmus Villemoes <linux@...musvillemoes.dk>,
	Sergey Senozhatsky <senozhatsky@...omium.org>,
	Jonathan Corbet <corbet@....net>,
	Andrew Morton <akpm@...ux-foundation.org>, apw@...onical.com,
	joe@...ches.com, dwaipayanray1@...il.com, lukas.bulwahn@...il.com,
	Kees Cook <kees@...nel.org>, tamird@...il.com,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	dri-devel@...ts.freedesktop.org, linux-doc@...r.kernel.org,
	Asahi Linux Mailing List <asahi@...ts.linux.dev>,
	netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH v4 1/3] lib/vsprintf: Add support for generic FourCCs by
 extending %p4cc

On Tue, Apr 22, 2025 at 10:43:59AM +0200, Geert Uytterhoeven wrote:
> On Tue, 22 Apr 2025 at 10:30, Aditya Garg <gargaditya08@...e.com> wrote:
> > On 22-04-2025 01:37 pm, Geert Uytterhoeven wrote:
> > > On Tue, 8 Apr 2025 at 08:48, Aditya Garg <gargaditya08@...e.com> wrote:

...

> > Originally, it was %p4cr (reverse-endian), but on the request of the
> > maintainers, it was changed to %p4cn.
> 
> Ah, I found it[1]:
> 
> | so, it needs more information that this mimics htonl() / ntohl() for
> networking.
> 
> IMHO this does not mimic htonl(), as htonl() is a no-op on big-endian.
> while %p4ch and %p4cl yield different results on big-endian.
> 
> > So here network means reverse of host, not strictly big-endian.
> 
> Please don't call it "network byte order" if that does not have the same
> meaning as in the network subsystem.
> 
> Personally, I like "%p4r" (reverse) more...
> (and "%p4ch" might mean human-readable ;-)

It will confuse the reader. h/r is not very established pair. If you really
wont see h/n, better to drop them completely for now then. Because I'm against
h/r pair.

> [1] https://lore.kernel.org/all/Z8B6DwcRbV-8D8GB@smile.fi.intel.com


-- 
With Best Regards,
Andy Shevchenko