From patchwork Fri Dec 9 07:33:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yang Yang X-Patchwork-Id: 13069355 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 0108AC4332F for ; Fri, 9 Dec 2022 07:33:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229943AbiLIHdf (ORCPT ); Fri, 9 Dec 2022 02:33:35 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40482 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229850AbiLIHde (ORCPT ); Fri, 9 Dec 2022 02:33:34 -0500 Received: from mxhk.zte.com.cn (mxhk.zte.com.cn [63.216.63.40]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 028B7DC8; Thu, 8 Dec 2022 23:33:31 -0800 (PST) Received: from mse-fl2.zte.com.cn (unknown [10.5.228.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mxhk.zte.com.cn (FangMail) with ESMTPS id 4NT2nQ36GHz8R039; Fri, 9 Dec 2022 15:33:30 +0800 (CST) Received: from szxlzmapp04.zte.com.cn ([10.5.231.166]) by mse-fl2.zte.com.cn with SMTP id 2B97XNdM002470; Fri, 9 Dec 2022 15:33:23 +0800 (+08) (envelope-from yang.yang29@zte.com.cn) Received: from mapi (szxlzmapp04[null]) by mapi (Zmail) with MAPI id mid14; Fri, 9 Dec 2022 15:33:25 +0800 (CST) Date: Fri, 9 Dec 2022 15:33:25 +0800 (CST) X-Zmail-TransId: 2b066392e4c554cc8088 X-Mailer: Zmail v1.0 Message-ID: <202212091533253334827@zte.com.cn> Mime-Version: 1.0 From: To: Cc: , , , , , , , , , Subject: =?utf-8?q?=5BPATCH_net-next_v2=5D_hns=3A_use_strscpy=28=29_to_inste?= =?utf-8?q?ad_of_strncpy=28=29?= X-MAIL: mse-fl2.zte.com.cn 2B97XNdM002470 X-Fangmail-Gw-Spam-Type: 0 X-FangMail-Miltered: at cgslv5.04-192.168.250.137.novalocal with ID 6392E4CA.000 by FangMail milter! X-FangMail-Envelope: 1670571210/4NT2nQ36GHz8R039/6392E4CA.000/10.5.228.133/[10.5.228.133]/mse-fl2.zte.com.cn/ X-Fangmail-Anti-Spam-Filtered: true X-Fangmail-MID-QID: 6392E4CA.000/4NT2nQ36GHz8R039 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Xu Panda The implementation of strscpy() is more robust and safer. That's now the recommended way to copy NUL terminated strings. Signed-off-by: Xu Panda Signed-off-by: Yang Yang Reviewed-by: Jiri Pirko Reviewed-by: Hao Lan --- change for v2 - change the prefix and subject: replace ethtool with hns, and replace linux-next with net-next. --- drivers/net/ethernet/hisilicon/hns/hns_ethtool.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c index 54faf0f2d1d8..b54f3706fb97 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_ethtool.c @@ -644,18 +644,15 @@ static void hns_nic_get_drvinfo(struct net_device *net_dev, { struct hns_nic_priv *priv = netdev_priv(net_dev); - strncpy(drvinfo->version, HNAE_DRIVER_VERSION, + strscpy(drvinfo->version, HNAE_DRIVER_VERSION, sizeof(drvinfo->version)); - drvinfo->version[sizeof(drvinfo->version) - 1] = '\0'; - strncpy(drvinfo->driver, HNAE_DRIVER_NAME, sizeof(drvinfo->driver)); - drvinfo->driver[sizeof(drvinfo->driver) - 1] = '\0'; + strscpy(drvinfo->driver, HNAE_DRIVER_NAME, sizeof(drvinfo->driver)); - strncpy(drvinfo->bus_info, priv->dev->bus->name, + strscpy(drvinfo->bus_info, priv->dev->bus->name, sizeof(drvinfo->bus_info)); - drvinfo->bus_info[ETHTOOL_BUSINFO_LEN - 1] = '\0'; - strncpy(drvinfo->fw_version, "N/A", ETHTOOL_FWVERS_LEN); + strscpy(drvinfo->fw_version, "N/A", ETHTOOL_FWVERS_LEN); drvinfo->eedump_len = 0; }