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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 9100AC2D0D1 for ; Thu, 19 Dec 2019 18:49:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5E37724679 for ; Thu, 19 Dec 2019 18:49:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576781347; bh=V4W7W/f4wiWQT9IugME53mzZW3R0mWlSXE+ycXYBgdc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=mXPtBTjhL39wdbZHq9bLrUzOO79afGRq8AjeJ7v51fK8KVzubsn/iGQeM98fPr8KA 9o4hE3pCkRLnNJznHzapCaadDtO/p7Ft6HZmBN4FrMb9VLSnsbA6KNzd3QukxCsk2K DsJIOxG4szFE0JjvpgjR5D8T0gxBvvrGoOUlZYtY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729351AbfLSStG (ORCPT ); Thu, 19 Dec 2019 13:49:06 -0500 Received: from mail.kernel.org ([198.145.29.99]:42388 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728691AbfLSStF (ORCPT ); Thu, 19 Dec 2019 13:49:05 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 50BA12465E; Thu, 19 Dec 2019 18:49:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576781344; bh=V4W7W/f4wiWQT9IugME53mzZW3R0mWlSXE+ycXYBgdc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rwou+Fp32s55EVzFQsUrGq4bYDKtDteHl44cWlMRTmaCc3olor8vOAUE4CqG1q0um w3IktF5sQNvDEwrC4Gfde/it2XGv9bEHxhCXVaMCYZw+JYofHrjOqVuL9pIwgDvZ3i AqGUN4LxX7NfR2z5UEmEuzkpL9CjfLmEBIZ1LmYQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jeff Mahoney , Jan Kara , Sasha Levin Subject: [PATCH 4.9 166/199] reiserfs: fix extended attributes on the root directory Date: Thu, 19 Dec 2019 19:34:08 +0100 Message-Id: <20191219183224.642619223@linuxfoundation.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20191219183214.629503389@linuxfoundation.org> References: <20191219183214.629503389@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Jeff Mahoney [ Upstream commit 60e4cf67a582d64f07713eda5fcc8ccdaf7833e6 ] Since commit d0a5b995a308 (vfs: Add IOP_XATTR inode operations flag) extended attributes haven't worked on the root directory in reiserfs. This is due to reiserfs conditionally setting the sb->s_xattrs handler array depending on whether it located or create the internal privroot directory. It necessarily does this after the root inode is already read in. The IOP_XATTR flag is set during inode initialization, so it never gets set on the root directory. This commit unconditionally assigns sb->s_xattrs and clears IOP_XATTR on internal inodes. The old return values due to the conditional assignment are handled via open_xa_root, which now returns EOPNOTSUPP as the VFS would have done. Link: https://lore.kernel.org/r/20191024143127.17509-1-jeffm@suse.com CC: stable@vger.kernel.org Fixes: d0a5b995a308 ("vfs: Add IOP_XATTR inode operations flag") Signed-off-by: Jeff Mahoney Signed-off-by: Jan Kara Signed-off-by: Sasha Levin --- fs/reiserfs/inode.c | 12 ++++++++++-- fs/reiserfs/namei.c | 7 +++++-- fs/reiserfs/reiserfs.h | 2 ++ fs/reiserfs/super.c | 2 ++ fs/reiserfs/xattr.c | 19 ++++++++++++------- fs/reiserfs/xattr_acl.c | 4 +--- 6 files changed, 32 insertions(+), 14 deletions(-) diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c index bd4c727f4610b..9531b6c18ac7b 100644 --- a/fs/reiserfs/inode.c +++ b/fs/reiserfs/inode.c @@ -2102,6 +2102,15 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th, goto out_inserted_sd; } + /* + * Mark it private if we're creating the privroot + * or something under it. + */ + if (IS_PRIVATE(dir) || dentry == REISERFS_SB(sb)->priv_root) { + inode->i_flags |= S_PRIVATE; + inode->i_opflags &= ~IOP_XATTR; + } + if (reiserfs_posixacl(inode->i_sb)) { reiserfs_write_unlock(inode->i_sb); retval = reiserfs_inherit_default_acl(th, dir, dentry, inode); @@ -2116,8 +2125,7 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th, reiserfs_warning(inode->i_sb, "jdm-13090", "ACLs aren't enabled in the fs, " "but vfs thinks they are!"); - } else if (IS_PRIVATE(dir)) - inode->i_flags |= S_PRIVATE; + } if (security->name) { reiserfs_write_unlock(inode->i_sb); diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c index 1ec728cf82d13..1c900f3220898 100644 --- a/fs/reiserfs/namei.c +++ b/fs/reiserfs/namei.c @@ -377,10 +377,13 @@ static struct dentry *reiserfs_lookup(struct inode *dir, struct dentry *dentry, /* * Propagate the private flag so we know we're - * in the priv tree + * in the priv tree. Also clear IOP_XATTR + * since we don't have xattrs on xattr files. */ - if (IS_PRIVATE(dir)) + if (IS_PRIVATE(dir)) { inode->i_flags |= S_PRIVATE; + inode->i_opflags &= ~IOP_XATTR; + } } reiserfs_write_unlock(dir->i_sb); if (retval == IO_ERROR) { diff --git a/fs/reiserfs/reiserfs.h b/fs/reiserfs/reiserfs.h index d920a646b5784..3e78a394fdb84 100644 --- a/fs/reiserfs/reiserfs.h +++ b/fs/reiserfs/reiserfs.h @@ -1167,6 +1167,8 @@ static inline int bmap_would_wrap(unsigned bmap_nr) return bmap_nr > ((1LL << 16) - 1); } +extern const struct xattr_handler *reiserfs_xattr_handlers[]; + /* * this says about version of key of all items (but stat data) the * object consists of diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c index dec6c93044fa3..cd2d555b3a6dd 100644 --- a/fs/reiserfs/super.c +++ b/fs/reiserfs/super.c @@ -2026,6 +2026,8 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent) if (replay_only(s)) goto error_unlocked; + s->s_xattr = reiserfs_xattr_handlers; + if (bdev_read_only(s->s_bdev) && !(s->s_flags & MS_RDONLY)) { SWARN(silent, s, "clm-7000", "Detected readonly device, marking FS readonly"); diff --git a/fs/reiserfs/xattr.c b/fs/reiserfs/xattr.c index 9e313fc7fdc70..dbc2ada9884f1 100644 --- a/fs/reiserfs/xattr.c +++ b/fs/reiserfs/xattr.c @@ -121,13 +121,13 @@ static struct dentry *open_xa_root(struct super_block *sb, int flags) struct dentry *xaroot; if (d_really_is_negative(privroot)) - return ERR_PTR(-ENODATA); + return ERR_PTR(-EOPNOTSUPP); inode_lock_nested(d_inode(privroot), I_MUTEX_XATTR); xaroot = dget(REISERFS_SB(sb)->xattr_root); if (!xaroot) - xaroot = ERR_PTR(-ENODATA); + xaroot = ERR_PTR(-EOPNOTSUPP); else if (d_really_is_negative(xaroot)) { int err = -ENODATA; @@ -609,6 +609,10 @@ int reiserfs_xattr_set(struct inode *inode, const char *name, int error, error2; size_t jbegin_count = reiserfs_xattr_nblocks(inode, buffer_size); + /* Check before we start a transaction and then do nothing. */ + if (!d_really_is_positive(REISERFS_SB(inode->i_sb)->priv_root)) + return -EOPNOTSUPP; + if (!(flags & XATTR_REPLACE)) jbegin_count += reiserfs_xattr_jcreate_nblocks(inode); @@ -831,8 +835,7 @@ ssize_t reiserfs_listxattr(struct dentry * dentry, char *buffer, size_t size) if (d_really_is_negative(dentry)) return -EINVAL; - if (!dentry->d_sb->s_xattr || - get_inode_sd_version(d_inode(dentry)) == STAT_DATA_V1) + if (get_inode_sd_version(d_inode(dentry)) == STAT_DATA_V1) return -EOPNOTSUPP; dir = open_xa_dir(d_inode(dentry), XATTR_REPLACE); @@ -872,6 +875,7 @@ static int create_privroot(struct dentry *dentry) } d_inode(dentry)->i_flags |= S_PRIVATE; + d_inode(dentry)->i_opflags &= ~IOP_XATTR; reiserfs_info(dentry->d_sb, "Created %s - reserved for xattr " "storage.\n", PRIVROOT_NAME); @@ -885,7 +889,7 @@ static int create_privroot(struct dentry *dentry) { return 0; } #endif /* Actual operations that are exported to VFS-land */ -static const struct xattr_handler *reiserfs_xattr_handlers[] = { +const struct xattr_handler *reiserfs_xattr_handlers[] = { #ifdef CONFIG_REISERFS_FS_XATTR &reiserfs_xattr_user_handler, &reiserfs_xattr_trusted_handler, @@ -956,8 +960,10 @@ int reiserfs_lookup_privroot(struct super_block *s) if (!IS_ERR(dentry)) { REISERFS_SB(s)->priv_root = dentry; d_set_d_op(dentry, &xattr_lookup_poison_ops); - if (d_really_is_positive(dentry)) + if (d_really_is_positive(dentry)) { d_inode(dentry)->i_flags |= S_PRIVATE; + d_inode(dentry)->i_opflags &= ~IOP_XATTR; + } } else err = PTR_ERR(dentry); inode_unlock(d_inode(s->s_root)); @@ -986,7 +992,6 @@ int reiserfs_xattr_init(struct super_block *s, int mount_flags) } if (d_really_is_positive(privroot)) { - s->s_xattr = reiserfs_xattr_handlers; inode_lock(d_inode(privroot)); if (!REISERFS_SB(s)->xattr_root) { struct dentry *dentry; diff --git a/fs/reiserfs/xattr_acl.c b/fs/reiserfs/xattr_acl.c index d92a1dc6ee70f..1f1fdfd3bc5cc 100644 --- a/fs/reiserfs/xattr_acl.c +++ b/fs/reiserfs/xattr_acl.c @@ -316,10 +316,8 @@ reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th, * would be useless since permissions are ignored, and a pain because * it introduces locking cycles */ - if (IS_PRIVATE(dir)) { - inode->i_flags |= S_PRIVATE; + if (IS_PRIVATE(inode)) goto apply_umask; - } err = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl); if (err) -- 2.20.1