2010/9/9 David Zeuthen <zeuthen@xxxxxxxxx>:
> Hey,
>
> On Thu, Sep 9, 2010 at 5:57 AM, Ludovic Rousseau
> <ludovic.rousseau@xxxxxxxxx> wrote:
>> > Something like:
>> > SUBSYSTEM=="usb", ENV{ID_USB_INTERFACES}="*:0b0000:*", GROUP= ...
>> > should do it.
>>
>> Yes, it does work.
>>
>> But I find the rule more obscure.
>>
>> Since performance is not a critical point for me I think I will stay with:
>> ATTRS{bInterfaceClass}=="0b", RUN+="/bin/chgrp pcscd $root/$parent"
>
> Please don't. It's racy. In particular it will break if you have
> daemons or apps listening for uevents and doing stuff when the device
> node appears.
Would the race issue disappear if I use RUN= instead of RUN+=?
The chgrp command should not take to long to execute.
Yes, I also have a daemon listening for events. I am using libhal now
but plan to move to libudev "soon".
Thanks
--
Dr. Ludovic Rousseau
--
To unsubscribe from this list: send the line "unsubscribe linux-hotplug" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
