From: Christoph Hellwig <hch@infradead.org>
To: David Howells <dhowells@redhat.com>
Cc: Miklos Szeredi <miklos@szeredi.hu>,
hch@infradead.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, torvalds@linux-foundation.org,
viro@ZenIV.linux.org.uk, adilger@sun.com,
alan@lxorguk.ukuu.org.uk, akpm@linux-foundation.org
Subject: Re: [RFC] O_NOACC: open without any access
Date: Tue, 23 Jun 2009 12:53:37 -0400 [thread overview]
Message-ID: <20090623165337.GA8204@infradead.org> (raw)
In-Reply-To: <16370.1245772337@redhat.com>
On Tue, Jun 23, 2009 at 04:52:17PM +0100, David Howells wrote:
> Miklos Szeredi <miklos@szeredi.hu> wrote:
>
> > Right, but that makes it useless for things which want to open it
> > despite having no permission on the file.
>
> For my purposes, if I'm going to emulate pioctl() in userspace, I also need to
> be able to open device files that don't have drivers available, and when you
> do open a dev file in this manner, it must _not_ call the ->open() routine of
> the device driver.
Last time I checked afs didn't support device files at all. And limited
the magic commands to not work on device files doesn't sound to bad.
Of course specifying what these magic tools are actually supposed to do
would be an interesting start.
next prev parent reply other threads:[~2009-06-23 16:53 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-18 6:55 [RFC] O_NOACC: open without any access Miklos Szeredi
2009-06-23 13:46 ` Christoph Hellwig
2009-06-23 14:12 ` Miklos Szeredi
2009-06-23 14:34 ` Christoph Hellwig
2009-06-23 15:13 ` Miklos Szeredi
2009-06-23 15:52 ` David Howells
2009-06-23 16:06 ` Alan Cox
2009-06-23 16:10 ` David Howells
2009-06-23 16:31 ` Miklos Szeredi
2009-06-23 16:33 ` Alan Cox
2009-06-23 17:05 ` David Howells
2009-06-23 17:34 ` Linus Torvalds
2009-06-23 20:04 ` Miklos Szeredi
2009-06-24 10:53 ` Al Viro
2009-06-24 11:12 ` Miklos Szeredi
2009-06-24 16:40 ` Linus Torvalds
2009-06-23 22:44 ` David Howells
2009-06-23 17:20 ` David Howells
2009-06-23 16:53 ` Christoph Hellwig [this message]
2009-06-23 16:59 ` David Howells
2009-06-24 17:02 ` Ulrich Drepper
2009-06-24 18:06 ` Miklos Szeredi
2009-06-24 18:34 ` Ulrich Drepper
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