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: <20230804-erdtrabanten-mitunter-12aa02867edc@brauner>
Date:   Fri, 4 Aug 2023 16:54:03 +0200
From:   Christian Brauner <brauner@...nel.org>
To:     Alexander Mikhalitsyn <aleksandr.mikhalitsyn@...onical.com>
Cc:     xiubli@...hat.com, stgraber@...ntu.com,
        linux-fsdevel@...r.kernel.org, Jeff Layton <jlayton@...nel.org>,
        Ilya Dryomov <idryomov@...il.com>, ceph-devel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v9 04/12] ceph: add enable_unsafe_idmap module parameter

On Fri, Aug 04, 2023 at 10:48:50AM +0200, Alexander Mikhalitsyn wrote:
> This parameter is used to decide if we allow
> to perform IO on idmapped mount in case when MDS lacks
> support of CEPHFS_FEATURE_HAS_OWNER_UIDGID feature.
> 
> In this case we can't properly handle MDS permission
> checks and if UID/GID-based restrictions are enabled
> on the MDS side then IO requests which go through an
> idmapped mount may fail with -EACCESS/-EPERM.
> Fortunately, for most of users it's not a case and
> everything should work fine. But we put work "unsafe"
> in the module parameter name to warn users about
> possible problems with this feature and encourage
> update of cephfs MDS.
> 
> Cc: Xiubo Li <xiubli@...hat.com>
> Cc: Jeff Layton <jlayton@...nel.org>
> Cc: Ilya Dryomov <idryomov@...il.com>
> Cc: ceph-devel@...r.kernel.org
> Suggested-by: Stéphane Graber <stgraber@...ntu.com>
> Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@...onical.com>
> ---

Seems good enough,
Acked-by: Christian Brauner <brauner@...nel.org>

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ