From cafe21a4fb3075fb2980caba8fdb533a1bdb52b0 Mon Sep 17 00:00:00 2001 From: Luis Henriques Date: Fri, 5 Jan 2018 10:47:20 +0000 Subject: ceph: quota: don't allow cross-quota renames This patch changes ceph_rename so that -EXDEV is returned if an attempt is made to mv a file between two different dir trees with different quotas setup. Signed-off-by: Luis Henriques Reviewed-by: "Yan, Zheng" Signed-off-by: Ilya Dryomov --- fs/ceph/dir.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'fs/ceph/dir.c') diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index 7d9851cd51bb..1f60498c4631 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -1080,6 +1080,11 @@ static int ceph_rename(struct inode *old_dir, struct dentry *old_dentry, else return -EROFS; } + /* don't allow cross-quota renames */ + if ((old_dir != new_dir) && + (!ceph_quota_is_same_realm(old_dir, new_dir))) + return -EXDEV; + dout("rename dir %p dentry %p to dir %p dentry %p\n", old_dir, old_dentry, new_dir, new_dentry); req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS); -- cgit v1.2.1