[Nut-upsuser] Re: newhidups fails only at boot

Peter Selinger selinger at mathstat.dal.ca
Wed Apr 18 01:33:07 UTC 2007

Jim Osborn wrote:
> On Mon, Apr 16, 2007 at  3:44:22PM -0700, I wrote:
> > I thought the hotplug init script, which does execute prior to the
> > ups init script, was supposed to take care of permissions, but I
> > have much to learn about all things USB.
> > ...
> > There are NO devices in /dev/usb/ with ownership root:nut, so maybe
> > that hotplug script isn't doing its thing after all.  I'll sprinkle
> > some more breadcrumbs in the scripts and see what they hint at... 
> It turns out that the nut-related hotplug script is executing AFTER
> the attempt to load the nut driver, even though the hotplug init script
> executes earlier.  Apparently the hotplug system needs to be informed
> about nut somehow so that it'll do the right thing at boot, I guess.
> The device in question turns out to be /proc/bus/usb/001/002, not
> something in /dev/usb/.  Since it's a virtual device, I suspect the
> permissions in /dev/usb are irrelevant, and that the hotplug action
> is necessary.  Guess it's time to grind through the hotplug code...

Yes, that is correct. The hotplug scripts you should be using for your
kernel are the ones from scripts/hotplug (not scripts/udev) in the NUT
> If anyone has been through this process for a 2.4 kernel, I'd love
> to hear any hints.

I don't have a 2.4 kernel, but I have used the hotplug (not udev)
scripts on a 2.6.11 kernel, and they are working fine.

-- Peter

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