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Message-ID: <0c5c361c6d65f5b2fdb1dc89fd4317f22cbc3e74.camel@kernel.org>
Date: Mon, 18 Apr 2022 09:17:14 -0400
From: Jeff Layton <jlayton@...nel.org>
To: Luís Henriques <lhenriques@...e.de>,
Xiubo Li <xiubli@...hat.com>, Ilya Dryomov <idryomov@...il.com>
Cc: ceph-devel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ceph: prevent snapshots to be created in encrypted
locked directories
On Mon, 2022-04-18 at 14:08 +0100, Luís Henriques wrote:
> 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@...e.de>
> ---
> fs/ceph/dir.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
> index f48f1ff20927..93e2f08102a1 100644
> --- a/fs/ceph/dir.c
> +++ b/fs/ceph/dir.c
> @@ -1071,6 +1071,10 @@ static int ceph_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
> err = -EDQUOT;
> goto out;
> }
> + if ((op == CEPH_MDS_OP_MKSNAP) && !fscrypt_has_encryption_key(dir)) {
> + err = -ENOKEY;
> + goto out;
> + }
>
>
> req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS);
Looks good. I'll pull this and the v4 series into the wip-fscrypt later
todat.
--
Jeff Layton <jlayton@...nel.org>
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