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From: Volodymyr Kostyrko <c.kworr@gmail.com>
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To: Andriy Gapon <avg@FreeBSD.org>, freebsd-usb@FreeBSD.org
Subject: Re: usb printer vs cups
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On 12.09.2014 20:53, Andriy Gapon wrote:
>
>  From my experience I think that cupsd executes backend tools with all uids and
> gids set to cups and no supplementary groups.  In the case of USB printers the
> backends need to access /dev/usbctl and /dev/usb/foobar that corresponds to a
> printer.  That means that the access to those devices must be somehow granted to
> cups:cups.
> How do people solve this?  What kind of permissions / configuration do you use?

devfs

> P.S.
> Maybe I over-generalized the issue to all USB printers.  My personal experience
> is with an HP printer handled by hplip / hplip-plugin.

Personally I prefer using stock lpd for those, it can be easily 
integrated with foomatic hpijs.

-- 
Sphinx of black quartz judge my vow.