I knew the 'Big Guns' wouldnt fail me! :)
Greg KH wrote:
On Thu, Jun 25, 2009 at 09:04:59AM -0700, jack craig wrote:
i have created the rule, ...
BUS=="usb", ATTRS{idVendor}=="1808", ATTRS{idProduct}=="5555", NAME="obdii", MODE="0666", SYMLINK+="obdii"
when i plug in my widget, sure enough, i get a /dev/obdii created with
my desired permissions so udev is ok (AFAIK).
It should be a symlink, right? What is the link pointing to?
well, as i expect it, /dev/obdii should get created on usb hotplug event and evaporate when its unplugged.
from the udev docs i expected all this would just get handled, but if its in the moblin stack,
that explains why the libusb group didn't have any insight.
llibusb.
Too many 'l' there :)
the fingers are So eager!
however, when i try and run my program and use the libusb functions,
it tries to open the /dev/bus/usb/003/002 device node which is not
device file i have so carefully created.
Why not? What device file did you create?
what i meant is that with that rule, the /dev/obdii gets created with 0666 as i want, its just then ignored by the
subsequent libusb_open()
And that sounds like your problem right there, you are matching on the
wrong thing in your udev rule.
i thought the match of idVendor & idProduct was correct, what is the correct usage?
Actually, you should not need to do _any_ of this, your system should
handle the control of the usb devices properly and give the local logged
in user access to them, no udev rules required at all.
If this isn't happening, it's a bug in your distro.
And yeah, I know you are using Intel's Moblin images, turns out they
haven't implemented this yet, go bug them about it if you care :)
i care alot! may i ask for a meaningful description of this breakage that i may pass to the
moblin team that would more clearly indicate what they need to fix?
thx again for your response, jackc...
good luck,
greg k-h
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