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From: Mika Westerberg <>
To: Rajat Jain <>
Cc: Andreas Noever <>,
	Michael Jamet <>,
	Yehezkel Bernat <>,,,,
Subject: Re: [PATCH v3] thunderbolt: For dev authorization changes, include the actual event in udev change notification
Date: Mon, 2 Aug 2021 18:07:14 +0300	[thread overview]
Message-ID: <YQgKIok9DOTgmyvw@lahna> (raw)
In-Reply-To: <>

Hi Rajat,

On Fri, Jul 30, 2021 at 04:53:04PM -0700, Rajat Jain wrote:
> For security, we would like to monitor and track when the thunderbolt
> devices are authorized and deauthorized (i.e. when the thunderbolt sysfs
> "authorized" attribute changes). Currently the userspace gets a udev
> change notification when there is a change, but the state may have
> changed (again) by the time we look at the authorized attribute in
> sysfs. So an authorization event may go unnoticed. Thus make it easier
> by informing the actual change (new value of authorized attribute) in
> the udev change notification.
> The change is included as a key value "authorized=<val>" where <val>
> is the new value of sysfs attribute "authorized", and is described at
> Documentation/ABI/testing/sysfs-bus-thunderbolt under
> /sys/bus/thunderbolt/devices/.../authorized
> Signed-off-by: Rajat Jain <>

I did some tiny changes to the title, commit message and the comment and
applied to thunderbolt.git/next, thanks!

  reply	other threads:[~2021-08-02 15:07 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-30 23:53 Rajat Jain
2021-08-02 15:07 ` Mika Westerberg [this message]
2021-08-02 18:49   ` Rajat Jain

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