From patchwork Tue May 22 16:01:07 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chandan Rajendra X-Patchwork-Id: 918411 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-ext4-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.vnet.ibm.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 40r0jQ3bBKz9s3G for ; Wed, 23 May 2018 02:00:26 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751722AbeEVQAY (ORCPT ); Tue, 22 May 2018 12:00:24 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:5047 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751652AbeEVQAT (ORCPT ); Tue, 22 May 2018 12:00:19 -0400 Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w4MFxKVb137808 for ; Tue, 22 May 2018 12:00:19 -0400 Received: from e32.co.us.ibm.com (e32.co.us.ibm.com [32.97.110.150]) by mx0a-001b2d01.pphosted.com with ESMTP id 2j4n95c46r-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Tue, 22 May 2018 12:00:19 -0400 Received: from localhost by e32.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Tue, 22 May 2018 10:00:15 -0600 Received: from b03ledav003.gho.boulder.ibm.com (b03ledav003.gho.boulder.ibm.com [9.17.130.234]) by b03cxnp07029.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w4MG02il7733714; Tue, 22 May 2018 09:00:15 -0700 Received: from b03ledav003.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D19D16A054; Tue, 22 May 2018 10:00:14 -0600 (MDT) Received: from localhost.localdomain.com (unknown [9.85.71.81]) by b03ledav003.gho.boulder.ibm.com (Postfix) with ESMTP id C903D6A08C; Tue, 22 May 2018 10:00:12 -0600 (MDT) From: Chandan Rajendra To: linux-fscrypt@vger.kernel.org Cc: Chandan Rajendra , ebiggers3@gmail.com, tytso@mit.edu, linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [RFC PATCH V3 09/12] fscrypt_encrypt_page: Encrypt all blocks mapped by a page Date: Tue, 22 May 2018 21:31:07 +0530 X-Mailer: git-send-email 2.9.5 In-Reply-To: <20180522160110.1161-1-chandan@linux.vnet.ibm.com> References: <20180522160110.1161-1-chandan@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18052216-0004-0000-0000-0000142264C3 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00009066; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000261; SDB=6.01036072; UDB=6.00529991; IPR=6.00815201; MB=3.00021242; MTD=3.00000008; XFM=3.00000015; UTC=2018-05-22 16:00:17 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18052216-0005-0000-0000-0000874EFB16 Message-Id: <20180522160110.1161-10-chandan@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2018-05-22_05:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1805220177 Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org This commit changes fscrypt_encrypt_page() to encrypt all the blocks mapped by a page. Signed-off-by: Chandan Rajendra --- fs/crypto/crypto.c | 21 +++++++++++++++------ 1 file changed, 15 insertions(+), 6 deletions(-) diff --git a/fs/crypto/crypto.c b/fs/crypto/crypto.c index 2148651..fd2ebe8 100644 --- a/fs/crypto/crypto.c +++ b/fs/crypto/crypto.c @@ -242,6 +242,7 @@ struct page *fscrypt_encrypt_page(const struct inode *inode, u64 lblk_num, gfp_t gfp_flags) { + unsigned int blocksize; struct fscrypt_ctx *ctx; struct page *ciphertext_page = page; int err; @@ -271,13 +272,21 @@ struct page *fscrypt_encrypt_page(const struct inode *inode, goto errout; ctx->w.control_page = page; - err = fscrypt_do_block_crypto(inode, FS_ENCRYPT, lblk_num, - page, ciphertext_page, len, offs, - gfp_flags); - if (err) { - ciphertext_page = ERR_PTR(err); - goto errout; + + blocksize = i_blocksize(inode); + while (offs < len) { + err = fscrypt_do_block_crypto(inode, FS_ENCRYPT, lblk_num, + page, ciphertext_page, blocksize, + offs, gfp_flags); + if (err) { + ciphertext_page = ERR_PTR(err); + goto errout; + } + + offs += blocksize; + ++lblk_num; } + SetPagePrivate(ciphertext_page); set_page_private(ciphertext_page, (unsigned long)ctx); lock_page(ciphertext_page);