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  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, 29 May 2019 12:16:27 +0100
From:   David Howells <dhowells@...hat.com>
To:     Jann Horn <jannh@...gle.com>
Cc:     dhowells@...hat.com, Al Viro <viro@...iv.linux.org.uk>,
        raven@...maw.net, linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Linux API <linux-api@...r.kernel.org>,
        linux-block@...r.kernel.org, keyrings@...r.kernel.org,
        linux-security-module <linux-security-module@...r.kernel.org>,
        kernel list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/7] vfs: Add a mount-notification facility

Jann Horn <jannh@...gle.com> wrote:

> I don't really know. I guess it depends on how it's being used? If
> someone decides to e.g. make a file browser that installs watches for
> a bunch of mountpoints for some fancy sidebar showing the device
> mounts on the system, or something like that, that probably shouldn't
> inhibit unmounting... I don't know if that's a realistic use case.

In such a use case, I would envision the browser putting a watch on "/".  A
watch sees all events in the subtree rooted at that point and you must apply a
filter that filters them out if you're not interested (filter on
WATCH_INFO_IN_SUBTREE using info_filter and info_mask).

David

Powered by blists - more mailing lists