From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-17.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 81A95C07E95 for ; Wed, 7 Jul 2021 12:09:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6D32361C5B for ; Wed, 7 Jul 2021 12:09:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231466AbhGGMMP (ORCPT ); Wed, 7 Jul 2021 08:12:15 -0400 Received: from mail.kernel.org ([198.145.29.99]:44706 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231428AbhGGMMO (ORCPT ); Wed, 7 Jul 2021 08:12:14 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id C7F6761C42; Wed, 7 Jul 2021 12:09:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1625659774; bh=r+QB+JzSQGd3/A6qO98mAnZEocr9nWdFLTFb7HRGHLg=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=SclnhBMmHvZMJqF9px/Nb4Irr9Tr8akw/jwHcOslk1DX/pfZmbRpZhpy7wW+9OtJU X2QSqPlr54dmT5R2CF6GhAFBjpmxZKogDSnu6VmMFS9iY8wB6oISXLS9plPIV1rnGz XxpQJBJsYpO6Ts4WTJEx8NzvvwEUra6W74pYkjfs8z3t9qmMBp9QHcKcgffT44Rcfp syoiGsJ7YJMKlEDaBXra2HNA4fyVWS37KDjEKotnU4xdnNAvtgjN0tA5hUoD7UJI6L XQ+gGbBiTOFbIN46DMkNLiVWA0QxPGj6JyU5HvS4pG2kwCNBrc1h4/zL3WcqR5RQ6u ncOPQ7VEj7d5A== Message-ID: Subject: Re: [RFC PATCH v7 06/24] ceph: parse new fscrypt_auth and fscrypt_file fields in inode traces From: Jeff Layton To: Xiubo Li , ceph-devel@vger.kernel.org Cc: lhenriques@suse.de, linux-fsdevel@vger.kernel.org, linux-fscrypt@vger.kernel.org, dhowells@redhat.com Date: Wed, 07 Jul 2021 08:09:32 -0400 In-Reply-To: References: <20210625135834.12934-1-jlayton@kernel.org> <20210625135834.12934-7-jlayton@kernel.org> Content-Type: text/plain; charset="ISO-8859-15" User-Agent: Evolution 3.40.2 (3.40.2-1.fc34) MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-fscrypt@vger.kernel.org On Wed, 2021-07-07 at 11:53 +0800, Xiubo Li wrote: > On 6/25/21 9:58 PM, Jeff Layton wrote: > > ...and store them in the ceph_inode_info. > > > > Signed-off-by: Jeff Layton > > --- > > fs/ceph/file.c | 2 ++ > > fs/ceph/inode.c | 18 ++++++++++++++++++ > > fs/ceph/mds_client.c | 44 ++++++++++++++++++++++++++++++++++++++++++++ > > fs/ceph/mds_client.h | 4 ++++ > > fs/ceph/super.h | 6 ++++++ > > 5 files changed, 74 insertions(+) > > > > diff --git a/fs/ceph/file.c b/fs/ceph/file.c > > index 2cda398ba64d..ea0e85075b7b 100644 > > --- a/fs/ceph/file.c > > +++ b/fs/ceph/file.c > > @@ -592,6 +592,8 @@ static int ceph_finish_async_create(struct inode *dir, struct inode *inode, > > iinfo.xattr_data = xattr_buf; > > memset(iinfo.xattr_data, 0, iinfo.xattr_len); > > > > + /* FIXME: set fscrypt_auth and fscrypt_file */ > > + > > in.ino = cpu_to_le64(vino.ino); > > in.snapid = cpu_to_le64(CEPH_NOSNAP); > > in.version = cpu_to_le64(1); // ??? > > diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c > > index f62785e4dbcb..b620281ea65b 100644 > > --- a/fs/ceph/inode.c > > +++ b/fs/ceph/inode.c > > @@ -611,6 +611,13 @@ struct inode *ceph_alloc_inode(struct super_block *sb) > > > > ci->i_meta_err = 0; > > > > +#ifdef CONFIG_FS_ENCRYPTION > > + ci->fscrypt_auth = NULL; > > + ci->fscrypt_auth_len = 0; > > + ci->fscrypt_file = NULL; > > + ci->fscrypt_file_len = 0; > > +#endif > > + > > return &ci->vfs_inode; > > } > > > > @@ -619,6 +626,9 @@ void ceph_free_inode(struct inode *inode) > > struct ceph_inode_info *ci = ceph_inode(inode); > > > > kfree(ci->i_symlink); > > +#ifdef CONFIG_FS_ENCRYPTION > > + kfree(ci->fscrypt_auth); > > +#endif > > kmem_cache_free(ceph_inode_cachep, ci); > > } > > > > @@ -1021,6 +1031,14 @@ int ceph_fill_inode(struct inode *inode, struct page *locked_page, > > xattr_blob = NULL; > > } > > > > + if (iinfo->fscrypt_auth_len && !ci->fscrypt_auth) { > > + ci->fscrypt_auth_len = iinfo->fscrypt_auth_len; > > + ci->fscrypt_auth = iinfo->fscrypt_auth; > > + iinfo->fscrypt_auth = NULL; > > + iinfo->fscrypt_auth_len = 0; > > + inode_set_flags(inode, S_ENCRYPTED, S_ENCRYPTED); > > + } > > + > > /* finally update i_version */ > > if (le64_to_cpu(info->version) > ci->i_version) > > ci->i_version = le64_to_cpu(info->version); > > diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c > > index 3b3a14024ca0..9c994effc51d 100644 > > --- a/fs/ceph/mds_client.c > > +++ b/fs/ceph/mds_client.c > > @@ -183,8 +183,48 @@ static int parse_reply_info_in(void **p, void *end, > > info->rsnaps = 0; > > } > > > > + if (struct_v >= 5) { > > + u32 alen; > > + > > + ceph_decode_32_safe(p, end, alen, bad); > > + > > + while (alen--) { > > + u32 len; > > + > > + /* key */ > > + ceph_decode_32_safe(p, end, len, bad); > > + ceph_decode_skip_n(p, end, len, bad); > > + /* value */ > > + ceph_decode_32_safe(p, end, len, bad); > > + ceph_decode_skip_n(p, end, len, bad); > > + } > > + } > > + > > + /* fscrypt flag -- ignore */ > > + if (struct_v >= 6) > > + ceph_decode_skip_8(p, end, bad); > > + > > + if (struct_v >= 7) { > > + ceph_decode_32_safe(p, end, info->fscrypt_auth_len, bad); > > + if (info->fscrypt_auth_len) { > > + info->fscrypt_auth = kmalloc(info->fscrypt_auth_len, GFP_KERNEL); > > + if (!info->fscrypt_auth) > > + return -ENOMEM; > > + ceph_decode_copy_safe(p, end, info->fscrypt_auth, > > + info->fscrypt_auth_len, bad); > > + } > > + ceph_decode_32_safe(p, end, info->fscrypt_file_len, bad); > > + if (info->fscrypt_file_len) { > > + info->fscrypt_file = kmalloc(info->fscrypt_file_len, GFP_KERNEL); > > + if (!info->fscrypt_file) > > + return -ENOMEM; > > Should we kfree(info->fscrypt_auth) before return ? > > I didn't anywhere is freeing it. > It'll get freed in destroy_reply_info(). We could do it here, but it should be fine to wait until we're tearing the "info" structure down. > > > > + ceph_decode_copy_safe(p, end, info->fscrypt_file, > > + info->fscrypt_file_len, bad); > > + } > > + } > > *p = end; > > } else { > > + /* legacy (unversioned) struct */ > > if (features & CEPH_FEATURE_MDS_INLINE_DATA) { > > ceph_decode_64_safe(p, end, info->inline_version, bad); > > ceph_decode_32_safe(p, end, info->inline_len, bad); > > @@ -625,6 +665,10 @@ static int parse_reply_info(struct ceph_mds_session *s, struct ceph_msg *msg, > > > > static void destroy_reply_info(struct ceph_mds_reply_info_parsed *info) > > { > > + kfree(info->diri.fscrypt_auth); > > + kfree(info->diri.fscrypt_file); > > + kfree(info->targeti.fscrypt_auth); > > + kfree(info->targeti.fscrypt_file); > > if (!info->dir_entries) > > return; > > free_pages((unsigned long)info->dir_entries, get_order(info->dir_buf_size)); > > diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h > > index 64ea9d853b8d..0c3cc61fd038 100644 > > --- a/fs/ceph/mds_client.h > > +++ b/fs/ceph/mds_client.h > > @@ -88,6 +88,10 @@ struct ceph_mds_reply_info_in { > > s32 dir_pin; > > struct ceph_timespec btime; > > struct ceph_timespec snap_btime; > > + u8 *fscrypt_auth; > > + u8 *fscrypt_file; > > + u32 fscrypt_auth_len; > > + u32 fscrypt_file_len; > > u64 rsnaps; > > u64 change_attr; > > }; > > diff --git a/fs/ceph/super.h b/fs/ceph/super.h > > index 0cd94b296f5f..e032737fe472 100644 > > --- a/fs/ceph/super.h > > +++ b/fs/ceph/super.h > > @@ -429,6 +429,12 @@ struct ceph_inode_info { > > > > #ifdef CONFIG_CEPH_FSCACHE > > struct fscache_cookie *fscache; > > +#endif > > +#ifdef CONFIG_FS_ENCRYPTION > > + u32 fscrypt_auth_len; > > + u32 fscrypt_file_len; > > + u8 *fscrypt_auth; > > + u8 *fscrypt_file; > > #endif > > errseq_t i_meta_err; > > > -- Jeff Layton