From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by dpdk.org (Postfix) with ESMTP id D7DC76C9B; Thu, 1 Nov 2018 19:22:02 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 01 Nov 2018 11:22:02 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,453,1534834800"; d="scan'208";a="83326291" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.79]) ([10.237.221.79]) by fmsmga008.fm.intel.com with ESMTP; 01 Nov 2018 11:22:00 -0700 To: Bruce Richardson , Stephen Hemminger Cc: Thomas Monjalon , Hemant Agrawal , Shreyansh Jain , dev@dpdk.org, stable@dpdk.org References: <20181101131951.91459-1-ferruh.yigit@intel.com> <20181101104231.1a4c1d72@xeon-e3> <20181101174550.GA23396@bricha3-MOBL.ger.corp.intel.com> From: Ferruh Yigit Openpgp: preference=signencrypt Autocrypt: addr=ferruh.yigit@intel.com; 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WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20181101174550.GA23396@bricha3-MOBL.ger.corp.intel.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [PATCH 1/2] bus/dpaa: fix build with gcc 9.0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 01 Nov 2018 18:22:03 -0000 On 11/1/2018 5:45 PM, Bruce Richardson wrote: > On Thu, Nov 01, 2018 at 10:42:31AM -0700, Stephen Hemminger wrote: >> On Thu, 1 Nov 2018 13:19:50 +0000 >> Ferruh Yigit wrote: >> >>> build error: >>> In function ‘fman_if_init’, >>> .../drivers/bus/dpaa/base/fman/fman.c:186:2: >>> error: ‘strncpy’ output may be truncated copying 4095 bytes from a >>> string of length 4095 [-Werror=stringop-truncation] >>> strncpy(__if->node_path, dpa_node->full_name, PATH_MAX - 1); >>> >>> strncpy may result a not null-terminated string, >>> replaced it with rte_strscpy >>> >>> Fixes: 5b22cf744689 ("bus/dpaa: introducing FMan configurations") >>> Cc: stable@dpdk.org >>> >>> Signed-off-by: Ferruh Yigit >> >> Maybe just use strlcpy instead of a DPDK specific function. >> That way if Gcc gets smarter it can check that as well. > > +1 > While I get the point of strscpy, if strlcpy is good enough for openbsd, > it's good enough for me! :-) I prefer strscpy but for both cases return value is not checked at all, so makes hard to argue the benefit of the more proper return value J So, as a rule of thumb are we saying strlcpy is dpdk preferred copy function?