lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
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>

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ