Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758408Ab1FWAjv (ORCPT ); Wed, 22 Jun 2011 20:39:51 -0400 Received: from out02.mta.xmission.com ([166.70.13.232]:51291 "EHLO out02.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757878Ab1FWAju (ORCPT ); Wed, 22 Jun 2011 20:39:50 -0400 From: ebiederm@xmission.com (Eric W. Biederman) To: Greg Kurz Cc: Bryan Donlan , akpm@linux-foundation.org, containers@lists.osdl.org, linux-kernel@vger.kernel.org, serge@hallyn.com, daniel.lezcano@free.fr, oleg@redhat.com, xemul@openvz.org, Cedric Le Goater References: <20110615145527.4016.70157.stgit@bahia.local> <1308570316.8230.140.camel@bahia.local> <1308756565.2959.65.camel@bahia.local> Date: Wed, 22 Jun 2011 17:39:38 -0700 In-Reply-To: <1308756565.2959.65.camel@bahia.local> (Greg Kurz's message of "Wed, 22 Jun 2011 17:29:25 +0200") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-XM-SPF: eid=;;;mid=;;;hst=in02.mta.xmission.com;;;ip=98.207.153.68;;;frm=ebiederm@xmission.com;;;spf=neutral X-XM-AID: U2FsdGVkX1+Jfr8kSssROpG8cZ65zk06Ebmis+ILNno= X-SA-Exim-Connect-IP: 98.207.153.68 X-SA-Exim-Mail-From: ebiederm@xmission.com X-Spam-Report: * -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP * 0.0 T_TM2_M_HEADER_IN_MSG BODY: T_TM2_M_HEADER_IN_MSG * -3.0 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * -0.0 DCC_CHECK_NEGATIVE Not listed in DCC * [sa06 1397; Body=1 Fuz1=1 Fuz2=1] * 0.0 T_TooManySym_01 4+ unique symbols in subject * 0.0 T_TooManySym_03 6+ unique symbols in subject * 0.0 T_TooManySym_02 5+ unique symbols in subject * 0.4 UNTRUSTED_Relay Comes from a non-trusted relay X-Spam-DCC: XMission; sa06 1397; Body=1 Fuz1=1 Fuz2=1 X-Spam-Combo: ;Greg Kurz X-Spam-Relay-Country: Subject: Re: [PATCH] Introduce ActivePid: in /proc/self/status (v2, was Vpid:) X-Spam-Flag: No X-SA-Exim-Version: 4.2.1 (built Fri, 06 Aug 2010 16:31:04 -0600) X-SA-Exim-Scanned: Yes (on in02.mta.xmission.com) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 943 Lines: 28 Greg Kurz writes: > On Mon, 2011-06-20 at 15:44 -0700, Eric W. Biederman wrote: >> fd = open("/proc/self/", O_DIRECTORY); >> ? >> >> Doing something based on proc files seems like a reasonable direction to >> head if we are working on a race free api. >> >> I suspect all we need is a sigqueue file. >> > > Are you referring to Bryan's rt_sigqueueinfo_fd() syscall or to a > new /proc/self/sigqueue file ? I was suggesting implement rt_sigqueueinfo_fd as a proc file instead. Getting a file descriptor api one way or another for delivering signals sounds nice in principle. I don't know if it is useful enough to justify the cost of implementing and supporting it. Eric -- 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/