linux-kernel - Re: [PATCH] Fix procfs task exe symlink

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: <200801250009.m0P09SBe010417@agora.fsl.cs.sunysb.edu>
Date:	Thu, 24 Jan 2008 19:09:28 -0500
From:	Erez Zadok <ezk@...sunysb.edu>
To:	Jan Engelhardt <jengelh@...putergmbh.de>
Cc:	Matt Helsley <matthltc@...ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>, Al Viro <viro@....linux.org.uk>,
	David Howells <dhowells@...hat.com>,
	William H Taber <wtaber@...ibm.com>,
	William Cesar de Oliveira <owilliam@...ibm.com>,
	Richard Kissel <rkissel@...ibm.com>,
	Christoph Hellwig <hch@....de>
Subject: Re: [PATCH] Fix procfs task exe symlink 

In message <Pine.LNX.4.64.0801231945530.12676@...rervta.pbzchgretzou.qr>, Jan Engelhardt writes:
> 
> On Jan 23 2008 10:29, Matt Helsley wrote:
> >
> >For executables on the stackable MVFS filesystem the current procfs
> >methods for implementing a task's exe symlink do not point to the
> >correct file and applications relying on the symlink fail (see the
> >java example below).
> 
> This reminds me of unoionfs - it also had this issue, but IIRC,
> it eventually got solved. (Should now display /union/exe rather
> than /lowerlevel/exe.) Unionfs developers should know more.

Unionfs resolved this by fully implementing the address_space ops, as well
as ->mmap (i.e., one cannot "cheat" and inherit the lower address_space).

Erez.
--
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/