Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751987AbXITELq (ORCPT ); Thu, 20 Sep 2007 00:11:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751100AbXITELe (ORCPT ); Thu, 20 Sep 2007 00:11:34 -0400 Received: from twinlark.arctic.org ([207.29.250.54]:44965 "EHLO twinlark.arctic.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751587AbXITELc (ORCPT ); Thu, 20 Sep 2007 00:11:32 -0400 Message-ID: <46F1F2EE.1010904@kernel.org> Date: Wed, 19 Sep 2007 21:11:26 -0700 From: Andrew Morgan User-Agent: Thunderbird 1.5.0.12 (X11/20070719) MIME-Version: 1.0 To: David Howells CC: viro@ftp.linux.org.uk, hch@infradead.org, Trond.Myklebust@netapp.com, sds@tycho.nsa.gov, casey@schaufler-ca.com, linux-kernel@vger.kernel.org, selinux@tycho.nsa.gov, linux-security-module@vger.kernel.org Subject: Re: [PATCH 3/3] CRED: Move the effective capabilities into the cred struct References: <20070919161749.8334.26064.stgit@warthog.procyon.org.uk> <20070919161805.8334.96808.stgit@warthog.procyon.org.uk> In-Reply-To: <20070919161805.8334.96808.stgit@warthog.procyon.org.uk> X-Enigmail-Version: 0.94.4.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1025 Lines: 30 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 David Howells wrote: > Move the effective capabilities mask from the task struct into the credentials > record. > > Note that the effective capabilities mask in the cred struct shadows that in > the task_struct because a thread can have its capabilities masks changed by > another thread. The shadowing is performed by update_current_cred() which is > invoked on entry to any system call that might need it. OOC If we were to simply drop support for one process changing the capabilities of another, would we need this patch? Thanks Andrew -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (GNU/Linux) iD8DBQFG8fLrQheEq9QabfIRApPOAKCHAoazhTTpY/qSjdmRZxDptqeqiACfd4Q7 mdIPx+xpG19ih9uiVv1NSBU= =TfZd -----END PGP SIGNATURE----- - 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/