From patchwork Wed Apr 27 19:13:06 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 12829420 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 04A10C433F5 for ; Wed, 27 Apr 2022 19:17:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233762AbiD0TU6 (ORCPT ); Wed, 27 Apr 2022 15:20:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53654 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233534AbiD0TTi (ORCPT ); Wed, 27 Apr 2022 15:19:38 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 11CD754BCB for ; Wed, 27 Apr 2022 12:13:58 -0700 (PDT) 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 9B017B8294F for ; Wed, 27 Apr 2022 19:13:56 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D4839C385A9; Wed, 27 Apr 2022 19:13:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1651086836; bh=fxw7rBOvGLOYMtMJ+hDc9AJ5VYh5vxtrf7kGlvoN384=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TUyfeABg8SsxiqYvk4cR0FfHUrFgUEN/VRuaTfa7VGjas4lmDn6fi9KeFt3+XmFsT lbf7/MNrUYD1QUQnR71tYzEYNIMGE1S1axOswEepoEdEfkII0EQgOxT4sCMr5d8OMm 1PSRP7MXBzuEefB/itYHLnlzK1pMkAJd8UOsTRhu/h34klA2/vpFTbsx7z9fSI4Lpk q5Q0DD4Yiz8xF38h+oeK3U/oDOOUWlONkE1KxJtEI8jOjyyk4GxbQBLjdBw//Brfhl YAOi//rnxwe6aSDOAtETx2RiK2XizC1EDJHhT6TEYWDJ0xOP3BV5qES+N1k9vlpKBX 07PR/I5yl2Lrw== From: Jeff Layton To: ceph-devel@vger.kernel.org Cc: xiubli@redhat.com, lhenriques@suse.de, idryomov@gmail.com Subject: [PATCH v14 56/64] ceph: add fscrypt decryption support to ceph_netfs_issue_op Date: Wed, 27 Apr 2022 15:13:06 -0400 Message-Id: <20220427191314.222867-57-jlayton@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220427191314.222867-1-jlayton@kernel.org> References: <20220427191314.222867-1-jlayton@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: ceph-devel@vger.kernel.org Force the use of sparse reads when the inode is encrypted, and add the appropriate code to decrypt the extent map after receiving. Signed-off-by: Jeff Layton --- fs/ceph/addr.c | 32 +++++++++++++++++++++++--------- 1 file changed, 23 insertions(+), 9 deletions(-) diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index 84d0b52010d9..d65d431ec933 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -18,6 +18,7 @@ #include "mds_client.h" #include "cache.h" #include "metric.h" +#include "crypto.h" #include #include @@ -216,7 +217,8 @@ static bool ceph_netfs_clamp_length(struct netfs_io_subrequest *subreq) static void finish_netfs_read(struct ceph_osd_request *req) { - struct ceph_fs_client *fsc = ceph_inode_to_client(req->r_inode); + struct inode *inode = req->r_inode; + struct ceph_fs_client *fsc = ceph_inode_to_client(inode); struct ceph_osd_data *osd_data = osd_req_op_extent_osd_data(req, 0); struct netfs_io_subrequest *subreq = req->r_priv; struct ceph_osd_req_op *op = &req->r_ops[0]; @@ -231,15 +233,24 @@ static void finish_netfs_read(struct ceph_osd_request *req) subreq->len, i_size_read(req->r_inode)); /* no object means success but no data */ - if (sparse && err >= 0) - err = ceph_sparse_ext_map_end(op); - else if (err == -ENOENT) + if (err == -ENOENT) err = 0; else if (err == -EBLOCKLISTED) fsc->blocklisted = true; - if (err >= 0 && err < subreq->len) - __set_bit(NETFS_SREQ_CLEAR_TAIL, &subreq->flags); + if (err >= 0) { + if (sparse && err > 0) + err = ceph_sparse_ext_map_end(op); + if (err < subreq->len) + __set_bit(NETFS_SREQ_CLEAR_TAIL, &subreq->flags); + if (IS_ENCRYPTED(inode) && err > 0) { + err = ceph_fscrypt_decrypt_extents(inode, osd_data->pages, + subreq->start, op->extent.sparse_ext, + op->extent.sparse_ext_cnt); + if (err > subreq->len) + err = subreq->len; + } + } netfs_subreq_terminated(subreq, err, true); @@ -316,13 +327,16 @@ static void ceph_netfs_issue_read(struct netfs_io_subrequest *subreq) size_t page_off; int err = 0; u64 len = subreq->len; - bool sparse = ceph_test_mount_opt(fsc, SPARSEREAD); + bool sparse = IS_ENCRYPTED(inode) || ceph_test_mount_opt(fsc, SPARSEREAD); + u64 off = subreq->start; if (ci->i_inline_version != CEPH_INLINE_NONE && ceph_netfs_issue_op_inline(subreq)) return; - req = ceph_osdc_new_request(&fsc->client->osdc, &ci->i_layout, vino, subreq->start, &len, + ceph_fscrypt_adjust_off_and_len(inode, &off, &len); + + req = ceph_osdc_new_request(&fsc->client->osdc, &ci->i_layout, vino, off, &len, 0, 1, sparse ? CEPH_OSD_OP_SPARSE_READ : CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ | fsc->client->osdc.client->options->read_from_replica, NULL, ci->i_truncate_seq, ci->i_truncate_size, false); @@ -341,7 +355,7 @@ static void ceph_netfs_issue_read(struct netfs_io_subrequest *subreq) } dout("%s: pos=%llu orig_len=%zu len=%llu\n", __func__, subreq->start, subreq->len, len); - iov_iter_xarray(&iter, READ, &rreq->mapping->i_pages, subreq->start, len); + iov_iter_xarray(&iter, READ, &rreq->mapping->i_pages, off, len); err = iov_iter_get_pages_alloc(&iter, &pages, len, &page_off); if (err < 0) { dout("%s: iov_ter_get_pages_alloc returned %d\n", __func__, err);