From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C2B47C282DC for ; Thu, 23 May 2019 00:43:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8246F2173C for ; Thu, 23 May 2019 00:43:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729980AbfEWAnQ (ORCPT ); Wed, 22 May 2019 20:43:16 -0400 Received: from out01.mta.xmission.com ([166.70.13.231]:49790 "EHLO out01.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729621AbfEWAnM (ORCPT ); Wed, 22 May 2019 20:43:12 -0400 Received: from in01.mta.xmission.com ([166.70.13.51]) by out01.mta.xmission.com with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.87) (envelope-from ) id 1hTbp8-0002LD-6H; Wed, 22 May 2019 18:43:10 -0600 Received: from ip72-206-97-68.om.om.cox.net ([72.206.97.68] helo=x220.int.ebiederm.org) by in01.mta.xmission.com with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_CBC_SHA256:128) (Exim 4.87) (envelope-from ) id 1hTboN-0005Z3-6H; Wed, 22 May 2019 18:42:24 -0600 From: "Eric W. Biederman" To: linux-kernel@vger.kernel.org Cc: "Eric W. Biederman" , Linux Containers , Oleg Nesterov , linux-arch@vger.kernel.org Date: Wed, 22 May 2019 19:39:15 -0500 Message-Id: <20190523003916.20726-26-ebiederm@xmission.com> X-Mailer: git-send-email 2.21.0.dirty In-Reply-To: <20190523003916.20726-1-ebiederm@xmission.com> References: <20190523003916.20726-1-ebiederm@xmission.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-XM-SPF: eid=1hTboN-0005Z3-6H;;;mid=<20190523003916.20726-26-ebiederm@xmission.com>;;;hst=in01.mta.xmission.com;;;ip=72.206.97.68;;;frm=ebiederm@xmission.com;;;spf=neutral X-XM-AID: U2FsdGVkX1+g8DFysIKhXEKVK8Zn0fgdaKJhS9xr850= X-SA-Exim-Connect-IP: 72.206.97.68 X-SA-Exim-Mail-From: ebiederm@xmission.com Subject: [REVIEW][PATCH 25/26] signal: Factor force_sig_info_to_task out of force_sig_info X-SA-Exim-Version: 4.2.1 (built Thu, 05 May 2016 13:38:54 -0600) X-SA-Exim-Scanned: Yes (on in01.mta.xmission.com) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org All callers of force_sig_info pass info.si_signo in for the signal by definition as well as in practice. Further all callers of force_sig_info except force_sig_fault_to_task pass current as the target task to force_sig_info. Factor out a static force_sig_info_to_task that force_sig_fault_to_task can call. This prepares the way for force_sig_info to have it's task and signal parameters removed. Signed-off-by: "Eric W. Biederman" --- kernel/signal.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/kernel/signal.c b/kernel/signal.c index d5f9ed5da9c5..0984158cd41a 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -1294,12 +1294,13 @@ int do_send_sig_info(int sig, struct kernel_siginfo *info, struct task_struct *p * We don't want to have recursive SIGSEGV's etc, for example, * that is why we also clear SIGNAL_UNKILLABLE. */ -int -force_sig_info(int sig, struct kernel_siginfo *info, struct task_struct *t) +static int +force_sig_info_to_task(struct kernel_siginfo *info, struct task_struct *t) { unsigned long int flags; int ret, blocked, ignored; struct k_sigaction *action; + int sig = info->si_signo; spin_lock_irqsave(&t->sighand->siglock, flags); action = &t->sighand->action[sig-1]; @@ -1324,6 +1325,11 @@ force_sig_info(int sig, struct kernel_siginfo *info, struct task_struct *t) return ret; } +int force_sig_info(int sig, struct kernel_siginfo *info, struct task_struct *t) +{ + return force_sig_info_to_task(info, t); +} + /* * Nuke all other threads in the group. */ @@ -1656,7 +1662,7 @@ int force_sig_fault_to_task(int sig, int code, void __user *addr info.si_flags = flags; info.si_isr = isr; #endif - return force_sig_info(info.si_signo, &info, t); + return force_sig_info_to_task(&info, t); } int force_sig_fault(int sig, int code, void __user *addr -- 2.21.0