From patchwork Tue Jan 11 19:15:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 12710419 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 659BDC4332F for ; Tue, 11 Jan 2022 19:16:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350647AbiAKTQt (ORCPT ); Tue, 11 Jan 2022 14:16:49 -0500 Received: from ams.source.kernel.org ([145.40.68.75]:60808 "EHLO ams.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350574AbiAKTQb (ORCPT ); Tue, 11 Jan 2022 14:16:31 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 7BB59B81D0E; Tue, 11 Jan 2022 19:16:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C214DC36AF2; Tue, 11 Jan 2022 19:16:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1641928589; bh=+C2trUiZPCTEWyTvmutqANQLRRY+XvzYO8gZ5/8aZv8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZYPTCashaniiRogeQRnsgKRawTLtjBgZp8g8ECRApsml5nPB4ga3xqzPhSkv28j43 UMW1dbWLv1JDsRW+PrPszQegGtj4YheRy8aWMZOV+4AmD7kebxLV4ZY++d3p+cfIme MzI7oLb3Q6lwECegCVV/0m7cLXyNLM/XrHt+UNWcHjhrW+Ch8T/vlCU24GqTkmx+6m 6+AC0WJ1NuNXzC0Ss+VEhcENRaqZpw4Bw3qXqvp3sQoE5FqAamxS9PslfbxjbBiGUS RQ9UA5klzSyEYiqruJYaC4XCJDsruEjDzOelOMwL7nTT3K+KQZIn/EtPxTmmLMIfot HKU/or0dVyn2Q== From: Jeff Layton To: ceph-devel@vger.kernel.org, linux-fscrypt@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org, idryomov@gmail.com, Luis Henriques Subject: [RFC PATCH v10 26/48] ceph: don't allow changing layout on encrypted files/directories Date: Tue, 11 Jan 2022 14:15:46 -0500 Message-Id: <20220111191608.88762-27-jlayton@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220111191608.88762-1-jlayton@kernel.org> References: <20220111191608.88762-1-jlayton@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fscrypt@vger.kernel.org From: Luis Henriques Encryption is currently only supported on files/directories with layouts where stripe_count=1. Forbid changing layouts when encryption is involved. Signed-off-by: Luis Henriques Signed-off-by: Jeff Layton --- fs/ceph/ioctl.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c index 477ecc667aee..480d18bb2ff0 100644 --- a/fs/ceph/ioctl.c +++ b/fs/ceph/ioctl.c @@ -294,6 +294,10 @@ static long ceph_set_encryption_policy(struct file *file, unsigned long arg) struct inode *inode = file_inode(file); struct ceph_inode_info *ci = ceph_inode(inode); + /* encrypted directories can't have striped layout */ + if (ci->i_layout.stripe_count > 1) + return -EINVAL; + ret = vet_mds_for_fscrypt(file); if (ret) return ret;