From patchwork Sun Feb 21 01:23:52 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: 1442737 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=112.213.38.117; helo=lists.ozlabs.org; envelope-from=linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org; receiver=) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 4DjnfM0nVpz9sBJ for ; Sun, 21 Feb 2021 12:24:27 +1100 (AEDT) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4DjnfL6mNkz3cPS for ; Sun, 21 Feb 2021 12:24:26 +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=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 4Djnf40KwTz30Mq for ; Sun, 21 Feb 2021 12:24:09 +1100 (AEDT) Received: from MTA-07.privateemail.com (localhost [127.0.0.1]) by MTA-07.privateemail.com (Postfix) with ESMTP id 7479460045; Sat, 20 Feb 2021 20:24:06 -0500 (EST) Received: from oc8246131445.ibm.com (unknown [10.20.151.213]) by MTA-07.privateemail.com (Postfix) with ESMTPA id 2DC0060047; Sun, 21 Feb 2021 01:24:06 +0000 (UTC) From: "Christopher M. Riedl" To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH v6 01/10] powerpc/uaccess: Add unsafe_copy_from_user Date: Sat, 20 Feb 2021 19:23:52 -0600 Message-Id: <20210221012401.22328-2-cmr@codefail.de> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20210221012401.22328-1-cmr@codefail.de> References: <20210221012401.22328-1-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: , Cc: Daniel Axtens 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 accepts a label to goto on error. Signed-off-by: Christopher M. Riedl Reviewed-by: Daniel Axtens --- 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 78e2a3990eab..33b2de642120 100644 --- a/arch/powerpc/include/asm/uaccess.h +++ b/arch/powerpc/include/asm/uaccess.h @@ -487,6 +487,9 @@ user_write_access_begin(const void __user *ptr, size_t len) #define unsafe_put_user(x, p, e) \ __unsafe_put_user_goto((__typeof__(*(p)))(x), (p), sizeof(*(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); \