linux-kernel - Re: Read-only `slaves` with shared subtrees?

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]

Date:   Wed, 20 Sep 2017 20:00:57 -0700
From:   Dawid Ciezarkiewicz <dawid.ciezarkiewicz@...rik.com>
To:     Ram Pai <linuxram@...ibm.com>
Cc:     "Eric W. Biederman" <ebiederm@...ssion.com>,
        linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: Read-only `slaves` with shared subtrees?

On Wed, Sep 20, 2017 at 5:39 PM, Ram Pai <linuxram@...ibm.com> wrote:
> Anyway; so something like this should be possible without breaking
> existing semantics.
>
> mount -o bind,remount,ro /mnt
> mount --make-pass-on-access  /mnt
>
> anything that gets mounted under /mnt will inherit the
> 'ro' attribute from its parent.  And when a mount-event propagates
> to a read-only-slave-mount, that new mount will automatically
> inherit the read-only attribute from its slave-parent.
>
> Dawid: will that work for you?


Yes. It is even more universal.

Regards,
Dawid Ciezarkiewicz