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=-11.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 74A5AC606BD for ; Mon, 8 Jul 2019 15:17:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4DAE0216E3 for ; Mon, 8 Jul 2019 15:17:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1562599067; bh=A3B+CCe3/MsWOjNTZZQCMTN4wd4E3BxnZap+XVg5Xew=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=MviU+hkFwEWe5q6jRGbAa46Cq6efRHIvPT0ztmbLmOwNO6F0ZlL3UgV9o+uwS3UIj RazoDEJgAD1an//VIB4tKlm8B99wES5WwDlqAUjdg8QD0Ib4IHERqUB7w3OCztZnJ9 8MCEqVfnxxKm20bJmZuZRb6yyvZ0aEvx6ytEXwPk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732887AbfGHPRq (ORCPT ); Mon, 8 Jul 2019 11:17:46 -0400 Received: from mail.kernel.org ([198.145.29.99]:41224 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730511AbfGHPRp (ORCPT ); Mon, 8 Jul 2019 11:17:45 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E88E6216C4; Mon, 8 Jul 2019 15:17:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1562599064; bh=A3B+CCe3/MsWOjNTZZQCMTN4wd4E3BxnZap+XVg5Xew=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cLhk2dhxRl9B9ZHxxLXKwzrpblKTAUCEmfCGxhRJ+FUN1A9b950KdsXebcWQmwW6q Y690i+S8veWtCIJtLT1Y97aimmYf9+cTJN9F4QbFyKbxJ+UKGnwjjwEWjCG2FwI/Ik Kv05fvGbZJB2VQWcl2LYZzU7eH2b/mTHPrYClIUM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Adrian Hunter , Jiri Olsa , Namhyung Kim , Arnaldo Carvalho de Melo Subject: [PATCH 4.4 30/73] perf help: Remove needless use of strncpy() Date: Mon, 8 Jul 2019 17:12:40 +0200 Message-Id: <20190708150522.770686017@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190708150513.136580595@linuxfoundation.org> References: <20190708150513.136580595@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Arnaldo Carvalho de Melo commit b6313899f4ed2e76b8375cf8069556f5b94fbff0 upstream. Since we make sure the destination buffer has at least strlen(orig) + 1, no need to do a strncpy(dest, orig, strlen(orig)), just use strcpy(dest, orig). This silences this gcc 8.2 warning on Alpine Linux: In function 'add_man_viewer', inlined from 'perf_help_config' at builtin-help.c:284:3: builtin-help.c:192:2: error: 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length [-Werror=stringop-truncation] strncpy((*p)->name, name, len); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ builtin-help.c: In function 'perf_help_config': builtin-help.c:187:15: note: length computed here size_t len = strlen(name); ^~~~~~~~~~~~ Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Fixes: 078006012401 ("perf_counter tools: add in basic glue from Git") Link: https://lkml.kernel.org/n/tip-2f69l7drca427ob4km8i7kvo@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Greg Kroah-Hartman --- tools/perf/builtin-help.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/tools/perf/builtin-help.c +++ b/tools/perf/builtin-help.c @@ -179,7 +179,7 @@ static void add_man_viewer(const char *n while (*p) p = &((*p)->next); *p = zalloc(sizeof(**p) + len + 1); - strncpy((*p)->name, name, len); + strcpy((*p)->name, name); } static int supported_man_viewer(const char *name, size_t len)