From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752906AbZLRBRb (ORCPT ); Thu, 17 Dec 2009 20:17:31 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751215AbZLRBR0 (ORCPT ); Thu, 17 Dec 2009 20:17:26 -0500 Received: from mx1.redhat.com ([209.132.183.28]:6495 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752383AbZLRBRZ (ORCPT ); Thu, 17 Dec 2009 20:17:25 -0500 Date: Fri, 18 Dec 2009 02:11:28 +0100 From: Oleg Nesterov To: Andrew Morton Cc: Alexey Dobriyan , Andi Kleen , Ananth Mavinakayanahalli , Christoph Hellwig , "Frank Ch. Eigler" , Ingo Molnar , Peter Zijlstra , Roland McGrath , linux-kernel@vger.kernel.org, utrace-devel@redhat.com Subject: [PATCH 3/7] ptrace_signal: check PT_PTRACED before reporting a signal Message-ID: <20091218011128.GA29552@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org No functional changes, preparation for utrace-ptrace. Change ptrace_signal() to check PT_PTRACED instead of task_ptrace() != 0. Currently this is the same, PT_PTRACED must be always set if the task is ptraced. This change is needed to make sure ptrace_signal() does nothing if ptrace is implemented on top of utrace, eventually this code will be removed completely. Signed-off-by: Roland McGrath Signed-off-by: Oleg Nesterov --- kernel/signal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- V1/kernel/signal.c~3_PTRACE_SIGNAL_CK_PTRACED 2009-12-18 00:20:50.000000000 +0100 +++ V1/kernel/signal.c 2009-12-18 00:48:35.000000000 +0100 @@ -1764,7 +1764,7 @@ static int do_signal_stop(int signr) static int ptrace_signal(int signr, siginfo_t *info, struct pt_regs *regs, void *cookie) { - if (!task_ptrace(current)) + if (!(task_ptrace(current) & PT_PTRACED)) return signr; ptrace_signal_deliver(regs, cookie);