From patchwork Sun Dec 5 14:51:02 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leo Yan X-Patchwork-Id: 12657097 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8FD5BC433FE for ; Sun, 5 Dec 2021 14:51:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235103AbhLEOzB (ORCPT ); Sun, 5 Dec 2021 09:55:01 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40220 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235147AbhLEOy6 (ORCPT ); Sun, 5 Dec 2021 09:54:58 -0500 Received: from mail-pf1-x435.google.com (mail-pf1-x435.google.com [IPv6:2607:f8b0:4864:20::435]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0E8BDC061751 for ; Sun, 5 Dec 2021 06:51:31 -0800 (PST) Received: by mail-pf1-x435.google.com with SMTP id n26so7762438pff.3 for ; Sun, 05 Dec 2021 06:51:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=3LDDsH38QkceeUfcUldY6VFRPfPHtJesMGkSHVAh5YM=; b=f3fPCDNDHAaSIGPbUYS057ddh5pKujL9XVYkGT4eEig7wCM/t65G2aZKSXTDn/zR5X m5T/+pMCCs5rlWOOf+s2ocQZ7V16WVgz4DJ8NP+3yGnRL9TVsJ/ZWKqt3YXTnZMDYyhn 4lZ0B7y5iKOT/aj6AyagHYHph9TDHQCp1+kMfZ+Bpkv9qNZesc58bui4Kv5lafRwEd5c Y4DoyfsSszMrZ2Z/txZNZR/AzVByD905iRTYUkfJlKFC8A4m+j/SWLnjEUZolRYe+jcv 1zDI/cX8dGGp0oVBtZMmN3R24vooHnabpX22ZHu5jUGt0uh2jvLbgwjDxVongWQE/1gz 4W7A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=3LDDsH38QkceeUfcUldY6VFRPfPHtJesMGkSHVAh5YM=; b=BKdlhp9lXLDe2zbaRAlilgk9Nr2TCEG2dMMY8449O0mvvut8Eu7pyNxiuYfQLg852Z MaPOWhm/AL7x3Fs3+XL6nH3OD4nZpffaCCCczrybKjiVDqG632CR1k0hfIrnAKAJOlqy osYl52fQSwAp6UvbnWwIj6sH4A3YfUxRg4i7CIZ95OfCZsY8jJPowiQnlFI1IDspWz1h xWkxpD4aqrFXMiqN7FhtcSwS9NVwAbr0H6HM3UgU5+OLT4Hv9b6sHWWLFT96gLZSgHS+ +XKuQYOHttEg/2xVP0yiJ8fEGtsgou4JKt5Rvfgwt9XQE4JauQHjxyBiZa5tUhQkWyK7 8kgQ== X-Gm-Message-State: AOAM530F1fkGmAAizDf7Qh/W7q4bxcKGu5OSTaixYGBBAPQj6SAsh0eN D2iRIkJBix3S/zc1anWQzLsaQg== X-Google-Smtp-Source: ABdhPJyuJmKT3XfC+zhLm/KCB4bWKe9YooU6y1UfwRFRNjjlMVTSdo1heNNLMgTcMpJFMrBsLFPdqw== X-Received: by 2002:a63:6a83:: with SMTP id f125mr13999908pgc.340.1638715890495; Sun, 05 Dec 2021 06:51:30 -0800 (PST) Received: from localhost ([2602:feda:dd6:6f1c:af3b:f51c:baf0:62a]) by smtp.gmail.com with ESMTPSA id p124sm9212732pfg.110.2021.12.05.06.51.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 05 Dec 2021 06:51:30 -0800 (PST) From: Leo Yan To: "David S. Miller" , Jakub Kicinski , Mathieu Poirier , Suzuki K Poulose , Mike Leach , Alexander Shishkin , Jan Harkes , coda@cs.cmu.edu, Paul Moore , Eric Paris , Balbir Singh , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, codalist@coda.cs.cmu.edu, linux-audit@redhat.com Cc: Leo Yan Subject: [PATCH v1 4/7] connector/cn_proc: Use task_is_in_root_ns() to check PID namespace Date: Sun, 5 Dec 2021 22:51:02 +0800 Message-Id: <20211205145105.57824-5-leo.yan@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211205145105.57824-1-leo.yan@linaro.org> References: <20211205145105.57824-1-leo.yan@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org To avoid open code, this patch uses the helper task_is_in_root_ns() to check if task is in root PID namespace. Signed-off-by: Leo Yan --- drivers/connector/cn_proc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/connector/cn_proc.c b/drivers/connector/cn_proc.c index 646ad385e490..b8a4fa366b28 100644 --- a/drivers/connector/cn_proc.c +++ b/drivers/connector/cn_proc.c @@ -358,7 +358,7 @@ static void cn_proc_mcast_ctl(struct cn_msg *msg, * other namespaces. */ if ((current_user_ns() != &init_user_ns) || - (task_active_pid_ns(current) != &init_pid_ns)) + !task_is_in_root_ns(current)) return; /* Can only change if privileged. */