linux-kernel - Re: [PATCH 3/3] [fs/sysv] V7: Add support for non-PDP11 v7 filesystems

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:	Thu, 22 Jul 2010 03:17:58 +0200
From:	Lubomir Rintel <lkundrak@...sk>
To:	Christoph Hellwig <hch@....de>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 3/3] [fs/sysv] V7: Add support for non-PDP11 v7
 filesystems

On Tue, 2010-07-20 at 12:41 +0200, Lubomir Rintel wrote:
> On Mon, 2010-07-19 at 16:58 +0200, Christoph Hellwig wrote:
... 
> > Do you actually need the mount option?  We get away just fine with
> > it for sysv filesystems.  And if not I'd be consistent and accept the
> > options for both sysv and v7 filesystems.
...
> Coherent seems to always use PDP-11 bytesex. I can not check at the
> time, but I'm almost sure it never run on such machines (was PC and 68k
> only?), so I suspect the coherent kernel might have always done the
> translation to native byte order. I think I have some coherent (for PC)
> floppies at home, so I can check tomorrow.

This was just partly correct. Coherent indeed run on PDP-11 (and not on
68k), but the PC version uses the very same bytesex as PDP-11 one,
translating the byte order on the fly (_canl() routine defined in
i386/as.inc file of Coherent 4.2.10 for i386 kernel is used).

Thus the mount option is really only useful with v7 filesystem and none
of those handled with sysv filesystem.

-- 
Flash is the Web2.0 version of blink and animated gifs.
                                     -- Stephen Smoogen

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/