Messages in this thread Patch in this message | | | From | Luis Henriques <> | Subject | [fscrypt][RFC PATCH v2] ceph: don't allow changing layout on encrypted files/directories | Date | Tue, 17 Aug 2021 15:04:39 +0100 |
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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 <lhenriques@suse.de> --- Changes since v1: - dropped changes to ceph_sync_setxattr(), MDS shall be responsible for preventing layout changes on encrypted dirs/files
fs/ceph/ioctl.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c index 477ecc667aee..480d18bb2ff0 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;
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