From patchwork Fri Jun 16 12:06:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wyes Karny X-Patchwork-Id: 109098 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:994d:0:b0:3d9:f83d:47d9 with SMTP id k13csp1310609vqr; Fri, 16 Jun 2023 05:39:04 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ51K2ZX4pkwcXGWaEKw5aoMTvUz9k2UQHYLdVx5nm+xBcTDJwKD8uHqicyMsR82KzQoD8FZ X-Received: by 2002:a17:902:f688:b0:1ae:50cc:455 with SMTP id l8-20020a170902f68800b001ae50cc0455mr1867086plg.39.1686919144547; Fri, 16 Jun 2023 05:39:04 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1686919144; cv=pass; d=google.com; s=arc-20160816; b=ghehVbSA/cZNuTFg5YyoY6ylh/vLdg4XhVaD8Z361ir3phNb0BCyckOHN35vsZpuBA loAU6i8O6PJ9pSnOEmUwVbqIh2EE10j7B/9uKfpvdHbNUy7uzKF6w6dv2JJBq2wfveZP VwpxHpirXSvsF0/qRfQhHoggQzdV4MbEzFUBciKeGgXv+R1Ny4WiV+dd82h2ew9bOWh7 x8v3CoVtdXitHxhseSqdEflFIYNSjq8321HzlYxAT+FX/Nzg5ELH5O9NR52keIdCgpdD qQm6RWQehQHDgQhZbwsQunOcdCCO4t8JQNY5owb5UdwoKalDITCl5L3eP/ikbX2TgLq3 q34w== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=msASNRWEBAp4EC0xUpPcYVisOmGSsjbxZ+7Gs974wLU=; b=vG7wHKKVEu6c6JEMOCx0TXmU6K8Wbg81gDNt2JZiO/K1BF3QJRyFyZNS0MqSOrP/yw 6tQrzw5FZaBaHJvcq1ULsPNsOsCem/oE5kcJjQn2IHFIWs7z1VqBnX4d2Z8gZbxAtxfQ vmQigSpX2cr4MxbnAC3whtK9D99cezX8NLchih2ta/6wboHlCv0CwPDbrXnyXw2hsdWR dB3KlKNmFZejI88fKtBYxVrsy3z56zve0tfJrFDs3bhXzejSfoo/I8lyFPw+qZJKoiw2 R+KK14Hv2+87bDQokdRIpsGtz0syN+OXTSp1H6rd0VbSI30XHa0j+w1NQJcgDj6gJPjy Tm6g== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@amd.com header.s=selector1 header.b=lIY8nXQ4; arc=pass (i=1 spf=pass spfdomain=amd.com dmarc=pass fromdomain=amd.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amd.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id lf11-20020a170902fb4b00b001b51fa75f3bsi2514712plb.24.2023.06.16.05.38.52; Fri, 16 Jun 2023 05:39:04 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@amd.com header.s=selector1 header.b=lIY8nXQ4; arc=pass (i=1 spf=pass spfdomain=amd.com dmarc=pass fromdomain=amd.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amd.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345224AbjFPMH7 (ORCPT + 99 others); Fri, 16 Jun 2023 08:07:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50952 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345003AbjFPMH5 (ORCPT ); Fri, 16 Jun 2023 08:07:57 -0400 Received: from NAM10-MW2-obe.outbound.protection.outlook.com (mail-mw2nam10on2043.outbound.protection.outlook.com [40.107.94.43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CF7BB30EC; Fri, 16 Jun 2023 05:07:54 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Tk39yDq+8Z9OkyG/lKZULMzr5mA2VRsQRdFHe8Z/2VbNPp0ABTphZHM1u411yTTl6ugs50qO1irWflen7bgd5YPpzwhnrfqA1vHrfm5TETVnm5X3LUSpeNH8dFEIaWEVhRgEvN6wAL8axraDRz4Ap3yZTdoWoQ7xz60tbrWmVdjqmC22MtnSFrWh1njpbEzaWDJGP41w3GDSwzYGj9Buoxr2cfWpX1qQ6S/mv9q+jvJmOK/9Ib7ChQzkt3BB1eKOIloMVNbZhXPJ07OP9HK8L7vQvJmSPMXlTkmi9lDu5pBk95HMkmSquhstEX4WoE19X+73Fnr5SjaUq+g8GxFOhg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=msASNRWEBAp4EC0xUpPcYVisOmGSsjbxZ+7Gs974wLU=; b=eu5ig4PZZFuxiWZEXMH4FV2bf6w9sweIy5gbWl/3Ffh2cXVkSNzU8KP8GE91QG4AU2gkfsG+G5h++PImdwoedqQl4MJ9LLanpIBjcKtzKqr4Oss/WTxtzc/R5I9MzjlzhlwrJmD05Py2gLRQQzTvSJAk0Hr5EMe841dHXSiTOlGa5lcrDCzxlwkKH2mufVpvJhyXiMsMhqq6A8Eoc8ciIzcRU909Mjm47fRCYQP82itgCTHZbFLo4cCfqPKOuns4GKrMriX7/GBkgCPpctCPThj4hm9g50BoPJ3FiJ/tZhFYEkFke2GjIb4inoul5TG0bmFPAps/kGozjI56Kr/wzw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=suse.com smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=msASNRWEBAp4EC0xUpPcYVisOmGSsjbxZ+7Gs974wLU=; b=lIY8nXQ4hbrwg4e7c3ssvJJ6Lj7j6ba999czdCmGTaW1nmt2cJ7lvFwWyvNDy9zNOETdjFoHm9gmaMBGv1x2FnRu8/MlDSbxP8lsEfvJyW7h6Ayi0xQQlw7TcbNJ2JC5yw9udyAPDySXML5Yq0LakH4NT9c9+ZCWKSQKtSSjyDA= Received: from BYAPR06CA0044.namprd06.prod.outlook.com (2603:10b6:a03:14b::21) by PH7PR12MB6539.namprd12.prod.outlook.com (2603:10b6:510:1f0::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6500.29; Fri, 16 Jun 2023 12:07:51 +0000 Received: from DM6NAM11FT097.eop-nam11.prod.protection.outlook.com (2603:10b6:a03:14b:cafe::c2) by BYAPR06CA0044.outlook.office365.com (2603:10b6:a03:14b::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6500.27 via Frontend Transport; Fri, 16 Jun 2023 12:07:50 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by DM6NAM11FT097.mail.protection.outlook.com (10.13.172.72) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6500.27 via Frontend Transport; Fri, 16 Jun 2023 12:07:50 +0000 Received: from beas.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.23; Fri, 16 Jun 2023 07:07:46 -0500 From: Wyes Karny To: , CC: , , , , , , , Wyes Karny Subject: [PATCH v2 2/5] cpupower: Add is_valid_path API Date: Fri, 16 Jun 2023 12:06:17 +0000 Message-ID: <20230616120620.147643-3-wyes.karny@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230616120620.147643-1-wyes.karny@amd.com> References: <20230616120620.147643-1-wyes.karny@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6NAM11FT097:EE_|PH7PR12MB6539:EE_ X-MS-Office365-Filtering-Correlation-Id: 9083bc07-6022-4b73-2e1d-08db6e624e66 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230028)(4636009)(136003)(39860400002)(376002)(396003)(346002)(451199021)(46966006)(36840700001)(40470700004)(47076005)(336012)(426003)(40460700003)(83380400001)(2616005)(2906002)(356005)(82740400003)(81166007)(36860700001)(36756003)(40480700001)(8936002)(8676002)(86362001)(110136005)(54906003)(82310400005)(5660300002)(41300700001)(4326008)(6666004)(70586007)(70206006)(7696005)(316002)(16526019)(186003)(44832011)(478600001)(26005)(1076003)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Jun 2023 12:07:50.3445 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 9083bc07-6022-4b73-2e1d-08db6e624e66 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT097.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB6539 X-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO, RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_NONE, T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1768862928919477870?= X-GMAIL-MSGID: =?utf-8?q?1768862928919477870?= Add is_valid_path API to check whether the sysfs file is present or not. Suggested-by: Gautham R. Shenoy Signed-off-by: Wyes Karny Reviewed-by: Mario Limonciello --- tools/power/cpupower/lib/cpupower.c | 7 +++++++ tools/power/cpupower/lib/cpupower_intern.h | 1 + 2 files changed, 8 insertions(+) diff --git a/tools/power/cpupower/lib/cpupower.c b/tools/power/cpupower/lib/cpupower.c index 3f7d0c0c5067..7a2ef691b20e 100644 --- a/tools/power/cpupower/lib/cpupower.c +++ b/tools/power/cpupower/lib/cpupower.c @@ -14,6 +14,13 @@ #include "cpupower.h" #include "cpupower_intern.h" +int is_valid_path(const char *path) +{ + if (access(path, F_OK) == -1) + return 0; + return 1; +} + unsigned int cpupower_read_sysfs(const char *path, char *buf, size_t buflen) { ssize_t numread; diff --git a/tools/power/cpupower/lib/cpupower_intern.h b/tools/power/cpupower/lib/cpupower_intern.h index ac1112b956ec..5fdb8620d41b 100644 --- a/tools/power/cpupower/lib/cpupower_intern.h +++ b/tools/power/cpupower/lib/cpupower_intern.h @@ -7,5 +7,6 @@ #define SYSFS_PATH_MAX 255 +int is_valid_path(const char *path); unsigned int cpupower_read_sysfs(const char *path, char *buf, size_t buflen); unsigned int cpupower_write_sysfs(const char *path, char *buf, size_t buflen);