From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: tvrtko.ursulin@sophos.com
Cc: Al Viro <viro@ftp.linux.org.uk>,
Casey Schaufler <casey@schaufler-ca.com>,
Christoph Hellwig <hch@infradead.org>,
linux-kernel@vger.kernel.org, Valdis.Kletnieks@vt.edu
Subject: Re: Out of tree module using LSM
Date: Thu, 29 Nov 2007 17:36:01 +0000 [thread overview]
Message-ID: <20071129173601.34273083@the-village.bc.nu> (raw)
In-Reply-To: <OF699E23DA.E36E712D-ON802573A2.00591FA8-802573A2.005A44A2@sophos.com>
> closed. But more importantly further access to it can be blocked until
> appropriate actions are taken which also applies with your example, no? Is
That bit is hard- very hard.
> it possible to open for execute and have dirty mappings (or open for
> write) on a file at the same time?
If I want I can have 16 threads executing code in a shared object being
written to by ten other programs at once and shared over a network while
we are at it. Its probably not a good idea but I can do it if I have
reason to.
Unix and Linux likewise take the basic view that locking is a problem for
the user, while file permissions prevent it being made a problem for
other users.
next prev parent reply other threads:[~2007-11-29 17:41 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-28 12:42 Out of tree module using LSM Tvrtko A. Ursulin
2007-11-28 14:41 ` Christoph Hellwig
2007-11-28 16:38 ` Casey Schaufler
2007-11-28 16:46 ` Christoph Hellwig
2007-11-28 17:39 ` Stephen Hemminger
2007-11-28 18:22 ` tvrtko.ursulin
2007-11-28 19:50 ` Alan Cox
2007-11-29 16:12 ` tvrtko.ursulin
2007-11-29 0:12 ` James Morris
2007-11-29 16:27 ` Jon Masters
2007-11-29 16:51 ` Greg KH
2007-11-29 16:51 ` Stephen Hemminger
2007-11-29 16:52 ` Jan Engelhardt
2007-11-29 0:51 ` Jan Engelhardt
2007-11-29 1:45 ` Casey Schaufler
2007-11-28 18:15 ` Valdis.Kletnieks
2007-11-28 18:30 ` Al Viro
2007-11-29 0:38 ` Greg KH
2007-11-29 0:53 ` Jan Engelhardt
2007-11-29 1:07 ` Greg KH
2007-11-29 16:36 ` Jon Masters
2007-11-29 16:47 ` Greg KH
2007-11-29 16:53 ` Jan Engelhardt
2007-11-29 16:57 ` Christoph Hellwig
2007-11-29 17:27 ` Alan Cox
2007-11-29 22:58 ` Andi Kleen
2007-12-08 10:50 ` Pavel Machek
2007-11-29 17:03 ` Greg KH
2007-11-29 17:35 ` Ray Lee
2007-11-29 17:45 ` Greg KH
2007-11-29 18:03 ` Ray Lee
2007-11-29 18:19 ` Justin Banks
2007-11-29 18:38 ` Jon Masters
2007-11-29 17:51 ` Al Viro
2007-11-29 17:05 ` Jon Masters
2007-11-29 17:14 ` Greg KH
2007-11-29 16:26 ` tvrtko.ursulin
2007-11-29 17:36 ` Alan Cox [this message]
2007-11-29 18:40 ` Ray Lee
2007-11-29 18:56 ` Jon Masters
2007-11-29 19:11 ` Ray Lee
2007-11-29 19:45 ` Jon Masters
2007-11-29 20:56 ` Valdis.Kletnieks
2007-11-29 22:08 ` Al Viro
2007-11-30 0:50 ` James Morris
2007-11-29 23:31 ` Jon Masters
2007-11-29 21:45 ` Alan Cox
2007-11-29 22:12 ` Justin Banks
2007-11-30 1:48 ` Al Viro
2007-11-30 15:37 ` Justin Banks
2007-11-29 23:34 ` Jon Masters
2007-11-30 6:20 ` Valdis.Kletnieks
2007-11-30 13:30 ` Alan Cox
2007-11-29 21:09 ` Andi Kleen
2007-11-28 19:20 ` Andi Kleen
2007-11-28 19:52 ` Alan Cox
2007-11-28 20:05 ` Valdis.Kletnieks
2007-11-29 16:39 ` tvrtko.ursulin
2007-12-01 8:43 ` Pavel Machek
2007-12-02 19:44 ` Valdis.Kletnieks
2007-12-02 20:02 ` Arjan van de Ven
2007-12-02 20:06 ` Andi Kleen
2007-12-02 20:22 ` Pavel Machek
2007-12-02 21:09 ` Valdis.Kletnieks
2007-12-02 21:56 ` Pavel Machek
2007-12-02 23:15 ` Jan Engelhardt
2007-12-02 23:23 ` Pavel Machek
2007-11-29 0:58 ` Greg KH
2007-11-30 20:52 Crispin Cowan
2007-11-30 21:36 ` James Morris
2007-11-30 23:52 ` Crispin Cowan
2007-12-01 0:05 ` James Morris
[not found] <9uzZr-6iz-19@gated-at.bofh.it>
[not found] ` <9uUrm-5w3-27@gated-at.bofh.it>
[not found] ` <9uVGz-7uQ-19@gated-at.bofh.it>
[not found] ` <9uWCC-xI-13@gated-at.bofh.it>
[not found] ` <9uWMp-Ix-13@gated-at.bofh.it>
[not found] ` <9uX5A-1rs-1@gated-at.bofh.it>
[not found] ` <9uXyK-24f-23@gated-at.bofh.it>
2007-12-03 22:45 ` Bodo Eggert
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