From patchwork Tue Nov 1 21:14:09 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe JAILLET X-Patchwork-Id: 13027490 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 1F0F7C433FE for ; Tue, 1 Nov 2022 21:23:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230106AbiKAVXD (ORCPT ); Tue, 1 Nov 2022 17:23:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43360 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230165AbiKAVXC (ORCPT ); Tue, 1 Nov 2022 17:23:02 -0400 X-Greylist: delayed 450 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Tue, 01 Nov 2022 14:22:59 PDT Received: from smtp.smtpout.orange.fr (smtp-16.smtpout.orange.fr [80.12.242.16]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id D45721AF for ; Tue, 1 Nov 2022 14:22:59 -0700 (PDT) Received: from pop-os.home ([86.243.100.34]) by smtp.orange.fr with ESMTPA id pyanoKD2rsfCIpybUoWfKf; Tue, 01 Nov 2022 22:15:24 +0100 X-ME-Helo: pop-os.home X-ME-Auth: Y2hyaXN0b3BoZS5qYWlsbGV0QHdhbmFkb28uZnI= X-ME-Date: Tue, 01 Nov 2022 22:15:24 +0100 X-ME-IP: 86.243.100.34 From: Christophe JAILLET To: Pasha Tatashin , Andrew Morton , Kees Cook Cc: linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Christophe JAILLET , linux-mm@kvack.org, linux-hardening@vger.kernel.org Subject: [PATCH 21/30] mm: Use kstrtobool() instead of strtobool() Date: Tue, 1 Nov 2022 22:14:09 +0100 Message-Id: <03f9401a6c8b87a1c786a2138d16b048f8d0eb53.1667336095.git.christophe.jaillet@wanadoo.fr> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-hardening@vger.kernel.org strtobool() is the same as kstrtobool(). However, the latter is more used within the kernel. In order to remove strtobool() and slightly simplify kstrtox.h, switch to the other function name. While at it, include the corresponding header file () Signed-off-by: Christophe JAILLET Reviewed-by: Kees Cook Acked-by: Pasha Tatashin --- This patch is part of a serie that axes all usages of strtobool(). Each patch can be applied independently from the other ones. The last patch of the serie removes the definition of strtobool(). You may not be in copy of the cover letter. So, if needed, it is available at [1]. [1]: https://lore.kernel.org/all/cover.1667336095.git.christophe.jaillet@wanadoo.fr/ --- mm/page_table_check.c | 3 ++- mm/usercopy.c | 3 ++- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/mm/page_table_check.c b/mm/page_table_check.c index 433dbce13fe1..93e633c1d587 100644 --- a/mm/page_table_check.c +++ b/mm/page_table_check.c @@ -4,6 +4,7 @@ * Copyright (c) 2021, Google LLC. * Pasha Tatashin */ +#include #include #include @@ -23,7 +24,7 @@ EXPORT_SYMBOL(page_table_check_disabled); static int __init early_page_table_check_param(char *buf) { - return strtobool(buf, &__page_table_check_enabled); + return kstrtobool(buf, &__page_table_check_enabled); } early_param("page_table_check", early_page_table_check_param); diff --git a/mm/usercopy.c b/mm/usercopy.c index c1ee15a98633..4c3164beacec 100644 --- a/mm/usercopy.c +++ b/mm/usercopy.c @@ -12,6 +12,7 @@ #include #include +#include #include #include #include @@ -258,7 +259,7 @@ static bool enable_checks __initdata = true; static int __init parse_hardened_usercopy(char *str) { - if (strtobool(str, &enable_checks)) + if (kstrtobool(str, &enable_checks)) pr_warn("Invalid option string for hardened_usercopy: '%s'\n", str); return 1;