From patchwork Thu Dec 9 15:36:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 12666815 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 1E7B9C4332F for ; Thu, 9 Dec 2021 15:37:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240615AbhLIPlM (ORCPT ); Thu, 9 Dec 2021 10:41:12 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50026 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240143AbhLIPkp (ORCPT ); Thu, 9 Dec 2021 10:40:45 -0500 Received: from sin.source.kernel.org (sin.source.kernel.org [IPv6:2604:1380:40e1:4800::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 63A3CC0698CD; Thu, 9 Dec 2021 07:37:11 -0800 (PST) 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 sin.source.kernel.org (Postfix) with ESMTPS id DEFA8CE267B; Thu, 9 Dec 2021 15:37:10 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 12FACC341C8; Thu, 9 Dec 2021 15:37:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1639064230; bh=0KK1kVVGRemR9oJOplaAgDep8LDN5kYCVzHs5TCiUT4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UojAkyeNbkFgLm0qsUQm1r8Qwfg+lP4B3rNhKrAegE3P0d+Qgy4oexYt4FHREf5hp pj44ZCnXmtGqe1dLkYaN3OPgs3Jv9XRKGLXIB5lsG94mqH6jI1U9029S+E9RWv7ggc znxZyLMiMj8/6HSVsuzB6LM4swLLNEDX4GT3w9QIyBPcVMlXI/WvDfGPf+n1C9WNBl vOQ78gS0IEwu4wW/VtE9BPDNGKVfKlrcwahb0Q2DT/shAmpjWgHeC771FrKv+Qv2aW c5BxUdz8c4EaEn1Dx00vXj+cPguCCBxyWMe7c5B3QvMDbqkSmw9KMt9vLi4CtrNIcD x9Yda+FISRIyg== From: Jeff Layton To: ceph-devel@vger.kernel.org Cc: linux-fscrypt@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: [PATCH 30/36] ceph: fscrypt_file field handling in MClientRequest messages Date: Thu, 9 Dec 2021 10:36:41 -0500 Message-Id: <20211209153647.58953-31-jlayton@kernel.org> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211209153647.58953-1-jlayton@kernel.org> References: <20211209153647.58953-1-jlayton@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fscrypt@vger.kernel.org For encrypted inodes, transmit a rounded-up size to the MDS as the normal file size and send the real inode size in fscrypt_file field. Also, fix up creates and truncates to also transmit fscrypt_file. Signed-off-by: Jeff Layton --- fs/ceph/dir.c | 3 +++ fs/ceph/file.c | 2 ++ fs/ceph/inode.c | 18 ++++++++++++++++-- fs/ceph/mds_client.c | 9 ++++++++- fs/ceph/mds_client.h | 2 ++ 5 files changed, 31 insertions(+), 3 deletions(-) diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 37c9c589ee27..987c1579614c 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -916,6 +916,9 @@ static int ceph_mknod(struct user_namespace *mnt_userns, struct inode *dir, goto out_req; } + if (S_ISREG(mode) && IS_ENCRYPTED(dir)) + set_bit(CEPH_MDS_R_FSCRYPT_FILE, &req->r_req_flags); + req->r_dentry = dget(dentry); req->r_num_caps = 2; req->r_parent = dir; diff --git a/fs/ceph/file.c b/fs/ceph/file.c index edc6c2c25174..9030df3becdb 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -727,6 +727,8 @@ int ceph_atomic_open(struct inode *dir, struct dentry *dentry, req->r_args.open.mask = cpu_to_le32(mask); req->r_parent = dir; ihold(dir); + if (IS_ENCRYPTED(dir)) + set_bit(CEPH_MDS_R_FSCRYPT_FILE, &req->r_req_flags); if (flags & O_CREAT) { struct ceph_file_layout lo; diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index 0dac3724c612..b3ea678af5f1 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -2384,11 +2384,25 @@ int __ceph_setattr(struct inode *inode, struct iattr *attr, struct ceph_iattr *c } } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || attr->ia_size != isize) { - req->r_args.setattr.size = cpu_to_le64(attr->ia_size); - req->r_args.setattr.old_size = cpu_to_le64(isize); mask |= CEPH_SETATTR_SIZE; release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL | CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; + if (IS_ENCRYPTED(inode) && attr->ia_size) { + set_bit(CEPH_MDS_R_FSCRYPT_FILE, &req->r_req_flags); + mask |= CEPH_SETATTR_FSCRYPT_FILE; + req->r_args.setattr.size = + cpu_to_le64(round_up(attr->ia_size, + CEPH_FSCRYPT_BLOCK_SIZE)); + req->r_args.setattr.old_size = + cpu_to_le64(round_up(isize, + CEPH_FSCRYPT_BLOCK_SIZE)); + req->r_fscrypt_file = attr->ia_size; + /* FIXME: client must zero out any partial blocks! */ + } else { + req->r_args.setattr.size = cpu_to_le64(attr->ia_size); + req->r_args.setattr.old_size = cpu_to_le64(isize); + req->r_fscrypt_file = 0; + } } } if (ia_valid & ATTR_MTIME) { diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 1d3334b99047..93e5e3c4ba64 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -2653,7 +2653,12 @@ static void encode_mclientrequest_tail(void **p, const struct ceph_mds_request * } else { ceph_encode_32(p, 0); } - ceph_encode_32(p, 0); // fscrypt_file for now + if (test_bit(CEPH_MDS_R_FSCRYPT_FILE, &req->r_req_flags)) { + ceph_encode_32(p, sizeof(__le64)); + ceph_encode_64(p, req->r_fscrypt_file); + } else { + ceph_encode_32(p, 0); + } } /* @@ -2739,6 +2744,8 @@ static struct ceph_msg *create_request_message(struct ceph_mds_session *session, /* fscrypt_file */ len += sizeof(u32); + if (test_bit(CEPH_MDS_R_FSCRYPT_FILE, &req->r_req_flags)) + len += sizeof(__le64); msg = ceph_msg_new2(CEPH_MSG_CLIENT_REQUEST, len, 1, GFP_NOFS, false); if (!msg) { diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h index 6a2ac489e06e..149a3a828472 100644 --- a/fs/ceph/mds_client.h +++ b/fs/ceph/mds_client.h @@ -276,6 +276,7 @@ struct ceph_mds_request { #define CEPH_MDS_R_DID_PREPOPULATE (6) /* prepopulated readdir */ #define CEPH_MDS_R_PARENT_LOCKED (7) /* is r_parent->i_rwsem wlocked? */ #define CEPH_MDS_R_ASYNC (8) /* async request */ +#define CEPH_MDS_R_FSCRYPT_FILE (9) /* must marshal fscrypt_file field */ unsigned long r_req_flags; struct mutex r_fill_mutex; @@ -283,6 +284,7 @@ struct ceph_mds_request { union ceph_mds_request_args r_args; struct ceph_fscrypt_auth *r_fscrypt_auth; + u64 r_fscrypt_file; u8 *r_altname; /* fscrypt binary crypttext for long filenames */ u32 r_altname_len; /* length of r_altname */