linux-kernel - Re: Why aren't partitions limited to fit within the device?

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]

Message-Id: <1160996072.24237.13.camel@localhost.localdomain>
Date:	Mon, 16 Oct 2006 11:54:32 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Xavier Bestel <xavier.bestel@...e.fr>
Cc:	Neil Brown <neilb@...e.de>, linux-kernel@...r.kernel.org,
	aeb@....nl, Jens Axboe <jens.axboe@...cle.com>
Subject: Re: Why aren't partitions limited to fit within the device?

Ar Llu, 2006-10-16 am 09:28 +0200, ysgrifennodd Xavier Bestel:
> > Hmmm.. So Alan things a partially-outside-this-disk partition
> > shouldn't show up at all, and Andries thinks it should.
> > And both give reasonably believable justifications.
> 
> Maybe the whole part table should be marked as "weird" to let userspace
> run a diagnostics/repair tool on the disk.

I actually like the "read only" suggestion that was made. Allow data
access but protect from damage.

Both options will allow 'repair' of a broken partition table as the
partition will show up in fdisk which accesses stuff directly, and when
that causes a revalidate it will re-appear to the kernel.

Incidentally the question of exactly what libata should do about HPA
handling also needs sorting out.

Alan

-
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/