From patchwork Wed Apr 17 15:37:05 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anand Jain X-Patchwork-Id: 10905571 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 32EDC922 for ; Wed, 17 Apr 2019 15:37:24 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1F818286B0 for ; Wed, 17 Apr 2019 15:37:24 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1442C287AA; Wed, 17 Apr 2019 15:37:24 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9B2E6286B0 for ; Wed, 17 Apr 2019 15:37:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732697AbfDQPhW (ORCPT ); Wed, 17 Apr 2019 11:37:22 -0400 Received: from aserp2130.oracle.com ([141.146.126.79]:58060 "EHLO aserp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732689AbfDQPhW (ORCPT ); Wed, 17 Apr 2019 11:37:22 -0400 Received: from pps.filterd (aserp2130.oracle.com [127.0.0.1]) by aserp2130.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x3HFJ4ba174395; Wed, 17 Apr 2019 15:37:18 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=corp-2018-07-02; bh=7Aj+pjzOaO20yDNNAFzsIh3kgQDImmpCLwkYW+JNLyw=; b=d+Kz/to9oQSrRAfaJjXm3RHegRfgec96xsFRpJ9GFtYP6Jbis2wo3AsfepysEI7j/ERZ +e21xsHNl/u9s8M8bqzE3u/BtEvTwjNFQIREzH24ypOFRHKJQ6gnIfbVcsX59GkppsXK koT/M4OntfRF+/5EKGrcmM7aHkO43QOTYUC8CmCMRLE9rqoyWYxk7c92cUIufojy2c8M XrwkGE+RkqxoaUpYDp3iXX/sodZUekQPjpHuldZ19wereucaW3LDfuq09lt3623HR6Ih MgFFySzv5ztOOHCy87E1/aUvqBekEoLZdnByljAHTAjQu3vzyeNU83TpDIydroPqog06 8g== Received: from aserp3020.oracle.com (aserp3020.oracle.com [141.146.126.70]) by aserp2130.oracle.com with ESMTP id 2ru59dbt0f-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 17 Apr 2019 15:37:18 +0000 Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.0.27/8.16.0.27) with SMTP id x3HFaBwe038842; Wed, 17 Apr 2019 15:37:17 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by aserp3020.oracle.com with ESMTP id 2rv2tvenyr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 17 Apr 2019 15:37:17 +0000 Received: from abhmp0008.oracle.com (abhmp0008.oracle.com [141.146.116.14]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id x3HFbGjP012863; Wed, 17 Apr 2019 15:37:16 GMT Received: from localhost.localdomain (/116.87.143.221) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 17 Apr 2019 08:37:16 -0700 From: Anand Jain To: linux-btrfs@vger.kernel.org Cc: dsterba@suse.cz Subject: [PATCH 1/2 RFC] btrfs: refactor btrfs_set_props to validate externally Date: Wed, 17 Apr 2019 23:37:05 +0800 Message-Id: <20190417153706.29942-2-anand.jain@oracle.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190417153706.29942-1-anand.jain@oracle.com> References: <20190417153706.29942-1-anand.jain@oracle.com> X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=9230 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1904170104 X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=9230 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1904170104 Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP In preparation to merge multiple transactions when setting the inode attribute flags, move btrfs_set_props()'s validation part to outside. Signed-off-by: Anand Jain --- fs/btrfs/ioctl.c | 3 +++ fs/btrfs/props.c | 23 +++++++++++++++++------ fs/btrfs/props.h | 1 + fs/btrfs/xattr.c | 5 +++++ 4 files changed, 26 insertions(+), 6 deletions(-) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 8c9a908d3acc..63e6e2f5b659 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -284,6 +284,7 @@ static int btrfs_ioctl_setflags(struct file *file, void __user *arg) binode->flags &= ~BTRFS_INODE_COMPRESS; binode->flags |= BTRFS_INODE_NOCOMPRESS; + /* set no-compression no need to validate prop here */ ret = btrfs_set_prop_trans(inode, "btrfs.compression", NULL, 0, 0); if (ret && ret != -ENODATA) @@ -299,6 +300,7 @@ static int btrfs_ioctl_setflags(struct file *file, void __user *arg) binode->flags |= BTRFS_INODE_COMPRESS; binode->flags &= ~BTRFS_INODE_NOCOMPRESS; + /* compress_type is already validated during mount options */ comp = btrfs_compress_type2str(fs_info->compress_type); if (!comp || comp[0] == 0) comp = btrfs_compress_type2str(BTRFS_COMPRESS_ZLIB); @@ -309,6 +311,7 @@ static int btrfs_ioctl_setflags(struct file *file, void __user *arg) goto out_drop; } else { + /* reset prop, no need of validate prop here */ ret = btrfs_set_prop_trans(inode, "btrfs.compression", NULL, 0, 0); if (ret && ret != -ENODATA) diff --git a/fs/btrfs/props.c b/fs/btrfs/props.c index 44b7bf647ab3..e356dd2a0f73 100644 --- a/fs/btrfs/props.c +++ b/fs/btrfs/props.c @@ -55,6 +55,23 @@ find_prop_handler(const char *name, return NULL; } +int btrfs_validate_prop(const char *name, const char *value, size_t value_len) +{ + const struct prop_handler *handler; + + if (strlen(name) <= XATTR_BTRFS_PREFIX_LEN) + return -EINVAL; + + handler = find_prop_handler(name, NULL); + if (!handler) + return -EINVAL; + + if (value_len == 0) + return 0; + + return handler->validate(value, value_len); +} + static int btrfs_set_prop(struct btrfs_trans_handle *trans, struct inode *inode, const char *name, const char *value, size_t value_len, int flags) @@ -62,9 +79,6 @@ static int btrfs_set_prop(struct btrfs_trans_handle *trans, struct inode *inode, const struct prop_handler *handler; int ret; - if (strlen(name) <= XATTR_BTRFS_PREFIX_LEN) - return -EINVAL; - handler = find_prop_handler(name, NULL); if (!handler) return -EINVAL; @@ -85,9 +99,6 @@ static int btrfs_set_prop(struct btrfs_trans_handle *trans, struct inode *inode, return ret; } - ret = handler->validate(value, value_len); - if (ret) - return ret; if (trans) ret = btrfs_setxattr(trans, inode, handler->xattr_name, value, value_len, flags); diff --git a/fs/btrfs/props.h b/fs/btrfs/props.h index b1a6b233b774..01d2c1899bc7 100644 --- a/fs/btrfs/props.h +++ b/fs/btrfs/props.h @@ -12,6 +12,7 @@ void __init btrfs_props_init(void); int btrfs_set_prop_trans(struct inode *inode, const char *name, const char *value, size_t value_len, int flags); +int btrfs_validate_prop(const char *name, const char *value, size_t value_len); int btrfs_load_inode_props(struct inode *inode, struct btrfs_path *path); diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c index 10da873d11f5..807cc24dc885 100644 --- a/fs/btrfs/xattr.c +++ b/fs/btrfs/xattr.c @@ -373,7 +373,12 @@ static int btrfs_xattr_handler_set_prop(const struct xattr_handler *handler, const char *name, const void *value, size_t size, int flags) { + int ret; + name = xattr_full_name(handler, name); + ret = btrfs_validate_prop(name, value, size); + if (ret) + return ret; return btrfs_set_prop_trans(inode, name, value, size, flags); }