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=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 76B8FC76188 for ; Tue, 16 Jul 2019 03:57:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 45DC320693 for ; Tue, 16 Jul 2019 03:57:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="hJGM//5j" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731567AbfGPD5L (ORCPT ); Mon, 15 Jul 2019 23:57:11 -0400 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:35138 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731510AbfGPD5L (ORCPT ); Mon, 15 Jul 2019 23:57:11 -0400 Received: from pps.filterd (m0109331.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x6G3qiFY019020 for ; Mon, 15 Jul 2019 20:57:09 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=facebook; bh=oFGGz2z/t/QcKCLsOtAUIcam8nQf+r/RcT547J6LTYI=; b=hJGM//5jUimTy0gDSpCCf25nzJ9G9pFirEyCsZxSdq6neGNw6t2LbziMOXZNFDFWpMyg NMXuGlUsIgMyPVwwNT9opFonfYkawcb+ZzOUoadmG1Mki0eYVH6ldg8vvYqKEg7fzaAj ZC4vnbgq6j5g111of0AJjWcTy41x0AciVBM= Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 2ts094978r-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Mon, 15 Jul 2019 20:57:09 -0700 Received: from mx-out.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:82::c) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Mon, 15 Jul 2019 20:57:08 -0700 Received: by dev101.prn2.facebook.com (Postfix, from userid 137359) id 59BBA861595; Mon, 15 Jul 2019 20:57:06 -0700 (PDT) Smtp-Origin-Hostprefix: dev From: Andrii Nakryiko Smtp-Origin-Hostname: dev101.prn2.facebook.com To: , , , CC: , , Andrii Nakryiko , Magnus Karlsson Smtp-Origin-Cluster: prn2c23 Subject: [PATCH bpf] libbpf: fix another GCC8 warning for strncpy Date: Mon, 15 Jul 2019 20:57:03 -0700 Message-ID: <20190716035704.948081-1-andriin@fb.com> X-Mailer: git-send-email 2.17.1 X-FB-Internal: Safe MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-07-16_01:,, signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1907160048 X-FB-Internal: deliver Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Similar issue was fixed in cdfc7f888c2a ("libbpf: fix GCC8 warning for strncpy") already. This one was missed. Fixing now. Cc: Magnus Karlsson Signed-off-by: Andrii Nakryiko --- tools/lib/bpf/xsk.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/tools/lib/bpf/xsk.c b/tools/lib/bpf/xsk.c index b33740221b7e..5007b5d4fd2c 100644 --- a/tools/lib/bpf/xsk.c +++ b/tools/lib/bpf/xsk.c @@ -517,7 +517,8 @@ int xsk_socket__create(struct xsk_socket **xsk_ptr, const char *ifname, err = -errno; goto out_socket; } - strncpy(xsk->ifname, ifname, IFNAMSIZ); + strncpy(xsk->ifname, ifname, IFNAMSIZ - 1); + xsk->ifname[IFNAMSIZ - 1] = '\0'; err = xsk_set_xdp_socket_config(&xsk->config, usr_config); if (err) -- 2.17.1