diff mbox series

[v17,65/71] ceph: prevent snapshots to be created in encrypted locked directories

Message ID 20230323065525.201322-66-xiubli@redhat.com
State Superseded
Headers show
Series ceph+fscrypt: full support | expand

Commit Message

Xiubo Li March 23, 2023, 6:55 a.m. UTC 
From: Luís Henriques <lhenriques@suse.de>

With snapshot names encryption we can not allow snapshots to be created in
locked directories because the names wouldn't be encrypted.  This patch
forces the directory to be unlocked to allow a snapshot to be created.

Signed-off-by: Luís Henriques <lhenriques@suse.de>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/ceph/dir.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 98a9b1592ba6..fe48a5d26c1d 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -1084,6 +1084,11 @@  static int ceph_mkdir(struct mnt_idmap *idmap, struct inode *dir,
 		err = -EDQUOT;
 		goto out;
 	}
+	if ((op == CEPH_MDS_OP_MKSNAP) && IS_ENCRYPTED(dir) &&
+	    !fscrypt_has_encryption_key(dir)) {
+		err = -ENOKEY;
+		goto out;
+	}
 
 
 	req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS);