From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay1.corp.sgi.com [137.38.102.111]) by oss.sgi.com (Postfix) with ESMTP id 632F97CBA for ; Tue, 2 Aug 2016 07:00:58 -0500 (CDT) Received: from cuda.sgi.com (cuda1.sgi.com [192.48.157.11]) by relay1.corp.sgi.com (Postfix) with ESMTP id 1897F8F8035 for ; Tue, 2 Aug 2016 05:00:55 -0700 (PDT) Received: from mail-pa0-f66.google.com (mail-pa0-f66.google.com [209.85.220.66]) by cuda.sgi.com with ESMTP id 9rg5GfMUjAY7fEvm (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NO) for ; Tue, 02 Aug 2016 05:00:52 -0700 (PDT) Received: by mail-pa0-f66.google.com with SMTP id q2so11865405pap.0 for ; Tue, 02 Aug 2016 05:00:52 -0700 (PDT) From: Eryu Guan Subject: [PATCH v2 RESEND] fs: return EPERM on immutable inode Date: Tue, 2 Aug 2016 19:58:28 +0800 Message-Id: <1470139108-13115-1-git-send-email-guaneryu@gmail.com> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com To: linux-fsdevel@vger.kernel.org Cc: open list , "supporter:XFS FILESYSTEM" , "open list:GFS2 FILE SYSTEM" , Eryu Guan , Alexander Viro , Bob Peterson , Steven Whitehouse In most cases, EPERM is returned on immutable inode, and there're only a few places returning EACCES. I noticed this when running LTP on overlayfs, setxattr03 failed due to unexpected EACCES on immutable inode. So converting all EACCES to EPERM on immutable inode. Acked-by: Dave Chinner Signed-off-by: Eryu Guan --- v2: - update commit log to mention that it's found by running LTP fs/gfs2/inode.c | 2 +- fs/namei.c | 2 +- fs/utimes.c | 3 ++- fs/xfs/xfs_ioctl.c | 2 +- 4 files changed, 5 insertions(+), 4 deletions(-) diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index e0621ca..e4da0ec 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -1800,7 +1800,7 @@ int gfs2_permission(struct inode *inode, int mask) } if ((mask & MAY_WRITE) && IS_IMMUTABLE(inode)) - error = -EACCES; + error = -EPERM; else error = generic_permission(inode, mask); if (gfs2_holder_initialized(&i_gh)) diff --git a/fs/namei.c b/fs/namei.c index c386a32..adb0414 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -410,7 +410,7 @@ int __inode_permission(struct inode *inode, int mask) * Nobody gets write access to an immutable file. */ if (IS_IMMUTABLE(inode)) - return -EACCES; + return -EPERM; /* * Updating mtime will likely cause i_uid and i_gid to be diff --git a/fs/utimes.c b/fs/utimes.c index 85c40f4..794f5f5 100644 --- a/fs/utimes.c +++ b/fs/utimes.c @@ -92,10 +92,11 @@ static int utimes_common(struct path *path, struct timespec *times) * then we need to check permissions, because * inode_change_ok() won't do it. */ - error = -EACCES; + error = -EPERM; if (IS_IMMUTABLE(inode)) goto mnt_drop_write_and_out; + error = -EACCES; if (!inode_owner_or_capable(inode)) { error = inode_permission(inode, MAY_WRITE); if (error) diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index 9a7c878..3d6820f 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -232,7 +232,7 @@ xfs_open_by_handle( } if ((fmode & FMODE_WRITE) && IS_IMMUTABLE(inode)) { - error = -EACCES; + error = -EPERM; goto out_dput; } -- 2.7.4 _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs