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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 BB9E8C433DB for ; Wed, 3 Feb 2021 18:47:36 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1691A64DE1 for ; Wed, 3 Feb 2021 18:47:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1691A64DE1 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codefail.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4DW9fG1Zd0zF02Q for ; Thu, 4 Feb 2021 05:47:34 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=codefail.de (client-ip=68.65.122.27; helo=mta-07-4.privateemail.com; envelope-from=cmr@codefail.de; receiver=) Received: from MTA-07-4.privateemail.com (mta-07-4.privateemail.com [68.65.122.27]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4DW9Yf2QhdzDwrb for ; Thu, 4 Feb 2021 05:43:33 +1100 (AEDT) Received: from MTA-07.privateemail.com (localhost [127.0.0.1]) by MTA-07.privateemail.com (Postfix) with ESMTP id 3237D60054 for ; Wed, 3 Feb 2021 13:43:30 -0500 (EST) Received: from oc8246131445.ibm.com (unknown [10.20.151.227]) by MTA-07.privateemail.com (Postfix) with ESMTPA id 02C0F60059 for ; Wed, 3 Feb 2021 18:43:29 +0000 (UTC) From: "Christopher M. Riedl" To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH v5 01/10] powerpc/uaccess: Add unsafe_copy_from_user Date: Wed, 3 Feb 2021 12:43:14 -0600 Message-Id: <20210203184323.20792-2-cmr@codefail.de> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20210203184323.20792-1-cmr@codefail.de> References: <20210203184323.20792-1-cmr@codefail.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Virus-Scanned: ClamAV using ClamSMTP X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Just wrap __copy_tofrom_user() for the usual 'unsafe' pattern which takes in a label to goto on error. Signed-off-by: Christopher M. Riedl --- arch/powerpc/include/asm/uaccess.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h index 501c9a79038c..036e82eefac9 100644 --- a/arch/powerpc/include/asm/uaccess.h +++ b/arch/powerpc/include/asm/uaccess.h @@ -542,6 +542,9 @@ user_write_access_begin(const void __user *ptr, size_t len) #define unsafe_get_user(x, p, e) unsafe_op_wrap(__get_user_allowed(x, p), e) #define unsafe_put_user(x, p, e) __put_user_goto(x, p, e) +#define unsafe_copy_from_user(d, s, l, e) \ + unsafe_op_wrap(__copy_tofrom_user((__force void __user *)d, s, l), e) + #define unsafe_copy_to_user(d, s, l, e) \ do { \ u8 __user *_dst = (u8 __user *)(d); \ -- 2.26.1