From: Arjan van de Ven <arjan@infradead.org>
To: Mitchell Blank Jr <mitch@sfgoth.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [RFC] relinquish_fs() syscall
Date: Tue, 30 Nov 2004 14:44:33 +0100 [thread overview]
Message-ID: <1101822273.2640.52.camel@laptop.fenrus.org> (raw)
In-Reply-To: <20041130132744.GB63669@gaz.sfgoth.com>
On Tue, 2004-11-30 at 05:27 -0800, Mitchell Blank Jr wrote:
> Alan Cox wrote:
> > With CAP_SYS_RAWIO I can ask the IDE controller to DMA into the kernel
> > as one example.
>
> Can you really do that on normal file descriptors? Weird. I'd have thought
> you'd need to open /dev/hd* to do that.
inb/outb after iopl.
> Is AF_UNIX in a separate namespace? My understanding (from reading
> unix_find_other()) is that unless you can create a UNIX socket in your
> filesystem you're going to have trouble creating new UNIX sockets.
iirc there are anonymous unix sockets...
next prev parent reply other threads:[~2004-11-30 13:44 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-29 11:43 Mitchell Blank Jr
2004-11-29 11:51 ` Alan Cox
2004-11-29 13:55 ` Mitchell Blank Jr
2004-11-29 15:17 ` Alan Cox
2004-11-30 13:27 ` Mitchell Blank Jr
2004-11-30 13:44 ` Arjan van de Ven [this message]
2004-11-30 14:12 ` Mitchell Blank Jr
2004-11-30 13:43 ` Alan Cox
2004-12-05 0:14 ` Rob Landley
2004-11-30 12:29 ` Helge Hafting
2004-11-30 13:48 ` Mitchell Blank Jr
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