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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: "Kristian Sørensen" <ks@cs.aau.dk>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	umbrella-devel@lists.sourceforge.net
Subject: Re: Getting full path from dentry in LSM hooks
Date: Fri, 03 Sep 2004 15:14:31 +0100	[thread overview]
Message-ID: <1094220870.7975.19.camel@localhost.localdomain> (raw)
In-Reply-To: <41385FA5.806@cs.aau.dk>

On Gwe, 2004-09-03 at 13:12, Kristian Sørensen wrote:
> I have a short question, concerning how to get the full path of a file 
> from a LSM hook.

The full path or a full path. It may have several. They may also have
changed under you. 

> Can some one reveal the trick to get the full path nomater if the 
> filesystem is root or mounted elsewhere in the filesystem?

You can get the namespace and the name within that namespace that
represents at least one of the names of the file within the vfs layer
(this is what the VFS itself uses for the struct nameidata).

There may be multiple links to a file, it may be mounted in multiple
places and someone on a seperate NFS server may have moved it while you
are thinking about it.


  parent reply	other threads:[~2004-09-03 15:22 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-09-03 12:12 Kristian Sørensen
2004-09-03 12:32 ` Christoph Hellwig
2004-09-03 12:38   ` [Umbrella-devel] " Kristian Sørensen
2004-09-03 13:04     ` Christoph Hellwig
2004-09-03 13:20       ` Kristian Sørensen
2004-09-03 14:01         ` Christoph Hellwig
2004-09-03 19:54           ` Kristian Sørensen
2004-09-04 11:09             ` Christoph Hellwig
2004-09-04 18:52               ` Kristian Sørensen
2004-09-03 15:38         ` Stephen Smalley
2004-09-03 12:43 ` Andrea Arcangeli
2004-09-03 14:14 ` Alan Cox [this message]
2004-09-03 20:05   ` [Umbrella-devel] " Kristian Sørensen
2004-09-03 20:39     ` Valdis.Kletnieks
2004-09-04  9:06       ` Kristian Sørensen
2004-09-04 10:50       ` Emmanuel Fleury
2004-09-07 14:19       ` Kristian Sørensen
2004-09-04  2:41     ` Horst von Brand
2004-09-04 19:01       ` Kristian Sørensen
2004-09-04 19:06       ` Kristian Sørensen
2004-09-04 16:56     ` Alan Cox
2004-09-04 18:47       ` Kristian Sørensen

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