From patchwork Thu Jan 28 04:04:15 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Christopher M. Riedl" X-Patchwork-Id: 1432518 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4DR6ZV3l38z9sVm for ; Thu, 28 Jan 2021 15:15:14 +1100 (AEDT) Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4DR6ZT6sXkzDqc1 for ; Thu, 28 Jan 2021 15:15:13 +1100 (AEDT) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=codefail.de (client-ip=131.153.2.45; helo=h4.fbrelay.privateemail.com; envelope-from=cmr@codefail.de; receiver=) Received: from h4.fbrelay.privateemail.com (h4.fbrelay.privateemail.com [131.153.2.45]) (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 4DR6LG6vhMzDrdc for ; Thu, 28 Jan 2021 15:04:38 +1100 (AEDT) Received: from MTA-09-3.privateemail.com (mta-09.privateemail.com [198.54.127.58]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by h3.fbrelay.privateemail.com (Postfix) with ESMTPS id CC146800B4 for ; Wed, 27 Jan 2021 23:04:34 -0500 (EST) Received: from MTA-09.privateemail.com (localhost [127.0.0.1]) by MTA-09.privateemail.com (Postfix) with ESMTP id 9ABA9600BC for ; Wed, 27 Jan 2021 23:04:30 -0500 (EST) Received: from oc8246131445.ibm.com (unknown [10.20.151.215]) by MTA-09.privateemail.com (Postfix) with ESMTPA id 6BE04600E4 for ; Thu, 28 Jan 2021 04:04:30 +0000 (UTC) From: "Christopher M. Riedl" To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH v4 01/10] powerpc/uaccess: Add unsafe_copy_from_user Date: Wed, 27 Jan 2021 22:04:15 -0600 Message-Id: <20210128040424.12720-2-cmr@codefail.de> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20210128040424.12720-1-cmr@codefail.de> References: <20210128040424.12720-1-cmr@codefail.de> MIME-Version: 1.0 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+patchwork-incoming=ozlabs.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); \