From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932450AbdIXUh1 (ORCPT ); Sun, 24 Sep 2017 16:37:27 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:59388 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932124AbdIXUhY (ORCPT ); Sun, 24 Sep 2017 16:37:24 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Mike Marshall , pvfs2-developers@beowulf-underground.org, Jan Kara Subject: [PATCH 4.9 04/77] orangefs: Dont clear SGID when inheriting ACLs Date: Sun, 24 Sep 2017 22:31:49 +0200 Message-Id: <20170924203243.075528186@linuxfoundation.org> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20170924203242.904856530@linuxfoundation.org> References: <20170924203242.904856530@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jan Kara commit b5accbb0dfae36d8d36cd882096943c98d5ede15 upstream. When new directory 'DIR1' is created in a directory 'DIR0' with SGID bit set, DIR1 is expected to have SGID bit set (and owning group equal to the owning group of 'DIR0'). However when 'DIR0' also has some default ACLs that 'DIR1' inherits, setting these ACLs will result in SGID bit on 'DIR1' to get cleared if user is not member of the owning group. Fix the problem by creating __orangefs_set_acl() function that does not call posix_acl_update_mode() and use it when inheriting ACLs. That prevents SGID bit clearing and the mode has been properly set by posix_acl_create() anyway. Fixes: 073931017b49d9458aa351605b43a7e34598caef CC: stable@vger.kernel.org CC: Mike Marshall CC: pvfs2-developers@beowulf-underground.org Signed-off-by: Jan Kara Signed-off-by: Mike Marshall Signed-off-by: Greg Kroah-Hartman --- fs/orangefs/acl.c | 48 ++++++++++++++++++++++++++++-------------------- 1 file changed, 28 insertions(+), 20 deletions(-) --- a/fs/orangefs/acl.c +++ b/fs/orangefs/acl.c @@ -61,9 +61,9 @@ struct posix_acl *orangefs_get_acl(struc return acl; } -int orangefs_set_acl(struct inode *inode, struct posix_acl *acl, int type) +static int __orangefs_set_acl(struct inode *inode, struct posix_acl *acl, + int type) { - struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); int error = 0; void *value = NULL; size_t size = 0; @@ -72,22 +72,6 @@ int orangefs_set_acl(struct inode *inode switch (type) { case ACL_TYPE_ACCESS: name = XATTR_NAME_POSIX_ACL_ACCESS; - if (acl) { - umode_t mode; - - error = posix_acl_update_mode(inode, &mode, &acl); - if (error) { - gossip_err("%s: posix_acl_update_mode err: %d\n", - __func__, - error); - return error; - } - - if (inode->i_mode != mode) - SetModeFlag(orangefs_inode); - inode->i_mode = mode; - mark_inode_dirty_sync(inode); - } break; case ACL_TYPE_DEFAULT: name = XATTR_NAME_POSIX_ACL_DEFAULT; @@ -132,6 +116,29 @@ out: return error; } +int orangefs_set_acl(struct inode *inode, struct posix_acl *acl, int type) +{ + int error; + + if (type == ACL_TYPE_ACCESS && acl) { + umode_t mode; + + error = posix_acl_update_mode(inode, &mode, &acl); + if (error) { + gossip_err("%s: posix_acl_update_mode err: %d\n", + __func__, + error); + return error; + } + + if (inode->i_mode != mode) + SetModeFlag(ORANGEFS_I(inode)); + inode->i_mode = mode; + mark_inode_dirty_sync(inode); + } + return __orangefs_set_acl(inode, acl, type); +} + int orangefs_init_acl(struct inode *inode, struct inode *dir) { struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); @@ -146,13 +153,14 @@ int orangefs_init_acl(struct inode *inod return error; if (default_acl) { - error = orangefs_set_acl(inode, default_acl, ACL_TYPE_DEFAULT); + error = __orangefs_set_acl(inode, default_acl, + ACL_TYPE_DEFAULT); posix_acl_release(default_acl); } if (acl) { if (!error) - error = orangefs_set_acl(inode, acl, ACL_TYPE_ACCESS); + error = __orangefs_set_acl(inode, acl, ACL_TYPE_ACCESS); posix_acl_release(acl); }