Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262067AbUK3Noq (ORCPT ); Tue, 30 Nov 2004 08:44:46 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262074AbUK3Noq (ORCPT ); Tue, 30 Nov 2004 08:44:46 -0500 Received: from canuck.infradead.org ([205.233.218.70]:35845 "EHLO canuck.infradead.org") by vger.kernel.org with ESMTP id S262067AbUK3Nop (ORCPT ); Tue, 30 Nov 2004 08:44:45 -0500 Subject: Re: [RFC] relinquish_fs() syscall From: Arjan van de Ven To: Mitchell Blank Jr Cc: Alan Cox , Linux Kernel Mailing List In-Reply-To: <20041130132744.GB63669@gaz.sfgoth.com> References: <20041129114331.GA33900@gaz.sfgoth.com> <1101729087.20223.14.camel@localhost.localdomain> <20041129135559.GC33900@gaz.sfgoth.com> <1101741440.20225.22.camel@localhost.localdomain> <20041130132744.GB63669@gaz.sfgoth.com> Content-Type: text/plain Message-Id: <1101822273.2640.52.camel@laptop.fenrus.org> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 (1.4.6-2.dwmw2.1) Date: Tue, 30 Nov 2004 14:44:33 +0100 Content-Transfer-Encoding: 7bit X-Spam-Score: 3.7 (+++) X-Spam-Report: SpamAssassin version 2.63 on canuck.infradead.org summary: Content analysis details: (3.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 1.1 RCVD_IN_DSBL RBL: Received via a relay in list.dsbl.org [] 2.5 RCVD_IN_DYNABLOCK RBL: Sent directly from dynamic IP address [80.57.133.107 listed in dnsbl.sorbs.net] 0.1 RCVD_IN_SORBS RBL: SORBS: sender is listed in SORBS [80.57.133.107 listed in dnsbl.sorbs.net] X-SRS-Rewrite: SMTP reverse-path rewritten from by canuck.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 820 Lines: 22 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... - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/