From mboxrd@z Thu Jan 1 00:00:00 1970 From: Casey Schaufler Subject: Re: About ACL for IPC Object Date: Tue, 23 Mar 2010 17:17:30 -0700 Message-ID: <4BA95A1A.6020003@schaufler-ca.com> References: <6fb445941001200112o2934f805l4eb4f78000e9527e@mail.gmail.com> <6fb445941001200120m3aa5e944j54a6f645ce82d76f@mail.gmail.com> <4B57C3C3.9010606@schaufler-ca.com> <6fb445941003230201r656d0363k6ed6853c3edc826b@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <6fb445941003230201r656d0363k6ed6853c3edc826b@mail.gmail.com> Sender: linux-security-module-owner@vger.kernel.org To: zhou peng Cc: linux-security-module@vger.kernel.org, linux-next@vger.kernel.org, LKML , linux-fsdevel@vger.kernel.org List-Id: linux-next.vger.kernel.org zhou peng wrote: > Hi, > > I have added ACL support to POSIX msg queue on linux kernel 2.6.32. > Casey Schaufler, would you or anyone like review the patch for me please? > I didn't see anything horribly wrong, but I have not tested it. Christoph's comments should be heeded. > The patch is attached. > Please include patches inline. It is much easier to make specific comments that way and it is The Way We Do Things. > Best, > > 2010/1/21 Casey Schaufler : > >> zhou peng wrote: >> >>> Hi all, >>> >>> There are ACL in file system, but why there are no ACL implementation >>> in IPC object, eg. shm, message queue, FIFO? >>> >>> >> Most people haven't noticed that IPC objects are even there, much less >> that they have mode bits and not ACLs. Even when we were doing security >> evaluations on Unix boxes in the 1990's they were considered insufficiently >> interesting to justify the additional work to do ACLs. >> >> If you really want ACLs on IPC objects it would make a dandy little >> project for a summer. I would be happy to review patches. >> >> >>> Is there any fine grained granting in ipc object just like in file object? >>> >>> >> As Stephen Smalley points out, you can do it with SELinux, although >> that it rather like driving a thumbtack with a bulldozer. >> >> >>> Thanks, >>> Best >>> >>> -- >>> zhoupeng >>> -- >>> 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/ >>> >>> >>> >>> >> > > > >