From patchwork Wed Nov 20 15:27:38 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Scott Mayhew X-Patchwork-Id: 11254135 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1DBE7930 for ; Wed, 20 Nov 2019 15:29:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E92922068D for ; Wed, 20 Nov 2019 15:29:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="NbcKIOEp" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729928AbfKTP3G (ORCPT ); Wed, 20 Nov 2019 10:29:06 -0500 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:35504 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729738AbfKTP2B (ORCPT ); Wed, 20 Nov 2019 10:28:01 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1574263679; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=PRV6lbvgR88Wr5k9lnynXaWb1eYVoklJDcYIvrs7Q9s=; b=NbcKIOEp78hsO543iQisx6anMQMYl+FbyKNYoYr6/fGqhWAULStgpdLz7uqmAquWRqiB8t 8uSm7/+gV153ULM58vyr1ozUUXvmR4rblZo3jgNcIKkl4xHsxaJqJOw7MAh6sjHnfic1UX 403Qf8czNBe87G6L8CDikdRTrmPQz0s= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-398-AJExikIIN6uE9P-VsnabVA-1; Wed, 20 Nov 2019 10:27:56 -0500 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 47130477; Wed, 20 Nov 2019 15:27:55 +0000 (UTC) Received: from coeurl.usersys.redhat.com (ovpn-123-90.rdu2.redhat.com [10.10.123.90]) by smtp.corp.redhat.com (Postfix) with ESMTP id 14DD32AA8A; Wed, 20 Nov 2019 15:27:55 +0000 (UTC) Received: by coeurl.usersys.redhat.com (Postfix, from userid 1000) id 700BC209F3; Wed, 20 Nov 2019 10:27:50 -0500 (EST) From: Scott Mayhew To: anna.schumaker@netapp.com, trond.myklebust@hammerspace.com Cc: dhowells@redhat.com, viro@zeniv.linux.org.uk, linux-nfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 15/27] nfs: get rid of ->set_security() Date: Wed, 20 Nov 2019 10:27:38 -0500 Message-Id: <20191120152750.6880-16-smayhew@redhat.com> In-Reply-To: <20191120152750.6880-1-smayhew@redhat.com> References: <20191120152750.6880-1-smayhew@redhat.com> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-MC-Unique: AJExikIIN6uE9P-VsnabVA-1 X-Mimecast-Spam-Score: 0 Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org From: Al Viro it's always either nfs_set_sb_security() or nfs_clone_sb_security(), the choice being controlled by mount_info->cloned != NULL. No need to add methods, especially when both instances live right next to the caller and are never accessed anywhere else. Reviewed-by: David Howells Signed-off-by: Al Viro --- fs/nfs/internal.h | 3 -- fs/nfs/namespace.c | 1 - fs/nfs/nfs4super.c | 3 -- fs/nfs/super.c | 69 ++++++++++++++-------------------------------- 4 files changed, 21 insertions(+), 55 deletions(-) diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index f64337a6d229..c0c6cd24f73f 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -137,7 +137,6 @@ struct nfs_mount_request { struct nfs_mount_info { unsigned int inherited_bsize; - int (*set_security)(struct super_block *, struct dentry *, struct nfs_mount_info *); struct nfs_parsed_mount_data *parsed; struct nfs_clone_mount *cloned; struct nfs_server *server; @@ -391,8 +390,6 @@ extern struct file_system_type nfs4_referral_fs_type; #endif bool nfs_auth_info_match(const struct nfs_auth_info *, rpc_authflavor_t); struct dentry *nfs_try_mount(int, const char *, struct nfs_mount_info *); -int nfs_set_sb_security(struct super_block *, struct dentry *, struct nfs_mount_info *); -int nfs_clone_sb_security(struct super_block *, struct dentry *, struct nfs_mount_info *); struct dentry *nfs_fs_mount(struct file_system_type *, int, const char *, void *); void nfs_kill_super(struct super_block *); diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c index 7bc5b9b8f5ea..72a99f9c7390 100644 --- a/fs/nfs/namespace.c +++ b/fs/nfs/namespace.c @@ -230,7 +230,6 @@ struct vfsmount *nfs_do_submount(struct dentry *dentry, struct nfs_fh *fh, }; struct nfs_mount_info mount_info = { .inherited_bsize = sb->s_blocksize_bits, - .set_security = nfs_clone_sb_security, .cloned = &mountdata, .mntfh = fh, .nfs_mod = NFS_SB(sb)->nfs_client->cl_nfs_mod, diff --git a/fs/nfs/nfs4super.c b/fs/nfs/nfs4super.c index d387c3c3b600..38f2eec7e1ad 100644 --- a/fs/nfs/nfs4super.c +++ b/fs/nfs/nfs4super.c @@ -201,8 +201,6 @@ struct dentry *nfs4_try_mount(int flags, const char *dev_name, struct nfs_parsed_mount_data *data = mount_info->parsed; struct dentry *res; - mount_info->set_security = nfs_set_sb_security; - dfprintk(MOUNT, "--> nfs4_try_mount()\n"); res = do_nfs4_mount(nfs4_create_server(mount_info), @@ -224,7 +222,6 @@ static struct dentry *nfs4_referral_mount(struct file_system_type *fs_type, { struct nfs_clone_mount *data = raw_data; struct nfs_mount_info mount_info = { - .set_security = nfs_clone_sb_security, .cloned = data, .nfs_mod = &nfs_v4, }; diff --git a/fs/nfs/super.c b/fs/nfs/super.c index c5fefd9bf6ae..f1b5488a04c3 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2550,52 +2550,6 @@ static void nfs_get_cache_cookie(struct super_block *sb, } #endif -int nfs_set_sb_security(struct super_block *s, struct dentry *mntroot, - struct nfs_mount_info *mount_info) -{ - int error; - unsigned long kflags = 0, kflags_out = 0; - if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL) - kflags |= SECURITY_LSM_NATIVE_LABELS; - - error = security_sb_set_mnt_opts(s, mount_info->parsed->lsm_opts, - kflags, &kflags_out); - if (error) - goto err; - - if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL && - !(kflags_out & SECURITY_LSM_NATIVE_LABELS)) - NFS_SB(s)->caps &= ~NFS_CAP_SECURITY_LABEL; -err: - return error; -} -EXPORT_SYMBOL_GPL(nfs_set_sb_security); - -int nfs_clone_sb_security(struct super_block *s, struct dentry *mntroot, - struct nfs_mount_info *mount_info) -{ - int error; - unsigned long kflags = 0, kflags_out = 0; - - /* clone any lsm security options from the parent to the new sb */ - if (d_inode(mntroot)->i_fop != &nfs_dir_operations) - return -ESTALE; - - if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL) - kflags |= SECURITY_LSM_NATIVE_LABELS; - - error = security_sb_clone_mnt_opts(mount_info->cloned->sb, s, kflags, - &kflags_out); - if (error) - return error; - - if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL && - !(kflags_out & SECURITY_LSM_NATIVE_LABELS)) - NFS_SB(s)->caps &= ~NFS_CAP_SECURITY_LABEL; - return 0; -} -EXPORT_SYMBOL_GPL(nfs_clone_sb_security); - static void nfs_set_readahead(struct backing_dev_info *bdi, unsigned long iomax_pages) { @@ -2610,6 +2564,7 @@ static struct dentry *nfs_fs_mount_common(int flags, const char *dev_name, struct dentry *mntroot = ERR_PTR(-ENOMEM); int (*compare_super)(struct super_block *, void *) = nfs_compare_super; struct nfs_server *server = mount_info->server; + unsigned long kflags = 0, kflags_out = 0; struct nfs_sb_mountdata sb_mntdata = { .mntflags = flags, .server = server, @@ -2670,7 +2625,26 @@ static struct dentry *nfs_fs_mount_common(int flags, const char *dev_name, if (IS_ERR(mntroot)) goto error_splat_super; - error = mount_info->set_security(s, mntroot, mount_info); + + if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL) + kflags |= SECURITY_LSM_NATIVE_LABELS; + if (mount_info->cloned) { + if (d_inode(mntroot)->i_fop != &nfs_dir_operations) { + error = -ESTALE; + goto error_splat_root; + } + /* clone any lsm security options from the parent to the new sb */ + error = security_sb_clone_mnt_opts(mount_info->cloned->sb, s, kflags, + &kflags_out); + } else { + error = security_sb_set_mnt_opts(s, mount_info->parsed->lsm_opts, + kflags, &kflags_out); + } + if (error) + goto error_splat_root; + if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL && + !(kflags_out & SECURITY_LSM_NATIVE_LABELS)) + NFS_SB(s)->caps &= ~NFS_CAP_SECURITY_LABEL; if (error) goto error_splat_root; @@ -2695,7 +2669,6 @@ struct dentry *nfs_fs_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *raw_data) { struct nfs_mount_info mount_info = { - .set_security = nfs_set_sb_security, }; struct dentry *mntroot = ERR_PTR(-ENOMEM); struct nfs_subversion *nfs_mod;