From a41d4149f8e3693fdd2ea85b34eb9332a03ba1e8 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Lu=C3=ADs=20Henriques?= Date: Tue, 17 Aug 2021 15:04:39 +0100 Subject: [PATCH] ceph: don't allow changing layout on encrypted files/directories Encryption is currently only supported on files/directories with layouts where stripe_count=1. Forbid changing layouts when encryption is involved. Signed-off-by: Luis Henriques Reviewed-by: Xiubo Li Signed-off-by: Jeff Layton --- fs/ceph/ioctl.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c index b9f0f4e460abf..9675ef3a6c478 100644 --- a/fs/ceph/ioctl.c +++ b/fs/ceph/ioctl.c @@ -294,6 +294,10 @@ static long ceph_set_encryption_policy(struct file *file, unsigned long arg) struct inode *inode = file_inode(file); struct ceph_inode_info *ci = ceph_inode(inode); + /* encrypted directories can't have striped layout */ + if (ci->i_layout.stripe_count > 1) + return -EINVAL; + ret = vet_mds_for_fscrypt(file); if (ret) return ret; -- 2.39.5