[Nut-upsuser] [Nut-upsdev] NUT UPS monitor & APC Back UPS CS-350 (nut-2.2.2p1) on OpenBSD

[Arnaud Quette]

2009/10/7 Charles Lepple <clepple at gmail.com>

> [Let's move this over to the NUT-upsuser list, since we are not discussing
> source code. (The post you quoted was from a time when usbhid-ups was still
> under heavy development.) Thanks!]
> Info: http://lists.alioth.debian.org/mailman/listinfo/nut-upsuser
>
> On Oct 6, 2009, at 9:22 AM, Zbigniew wrote:
>
>  Hallo,
>>
>> Following the tips found at https://calomel.org/nut_ups.html I was trying
>> to
>> make NUT operate "APC Back UPS CS-350". The device introduces itself as:
>>
>> #v+
>>  ugen0 at uhub0 port 1 "American Power Conversion Back-UPS CS 350
>> FW:807.q7.I
>>  USB FW:q7" rev 1.10/0.06 addr 2
>> #v-
>>
>
> So far, so good - the kernel sees it as a ugen device (versus uhid), which
> allows libusb to talk to it.
>
>  My config:
>>
>> #v+
>> [apc]
>>       driver = usbhid-ups
>>       port = /dev/ugen0.00
>>       pollfreq = 60
>>       desc = "Back UPS CS-350"
>> #v-
>>
>>
>> Unfortunately, when I'm trying to start UPS driver, it's complaining:
>>
>> #v+
>>  # usbhid-ups -a apc
>>  Network UPS Tools: 0.29 USB communication driver - core 0.33 (2.2.2)
>>
>>  No matching HID UPS found
>> #v-
>>
>
> By default, running a driver as root will drop privileges to whatever user
> you set in the ./configure script (default: nobody).
>
> This post reports success on FreeBSD by adding "-u root" to the command
> line:
>
>
> http://www.mail-archive.com/nut-upsuser@lists.alioth.debian.org/msg04850.html
>
> Not a good strategy for the long run, but it will let you see if things
> work.
>
> This email talks about using devd on FreeBSD to change permission on all of
> /dev/ugen[0-9]*:
>
>
> http://lists.alioth.debian.org/pipermail/nut-upsuser/2008-August/004345.html
>
> I don't know if OpenBSD has something similar to devd, but the same
> principles should apply - libusb probably needs permission to the base /dev
> node for scanning the bus.


just to add my cents here: iirc, there was also a need to set privileges on
the bus, and not only on the device... we will have to track this to
complete the user manual.

cheers,
Arnaud
-- 
Linux / Unix Expert R&D - Eaton - http://www.eaton.com/mgeops
Network UPS Tools (NUT) Project Leader - http://www.networkupstools.org/
Debian Developer - http://www.debian.org
Free Software Developer - http://arnaud.quette.free.fr/
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