I am having some issues accessing devices using javax-usb-ri-linux-1.0.2. I
believe I have set it up correctly as I do not have any errors when running
the example applications.
I was not able to see any devices with the Show Topology example, except for
the virtual hub so I turned on the JNI tracing which revealed this:
[hotplug](3) JavaxUsbTopologyUpdater.c.build_device[117] Building device
/dev/bus/usb/001/001
[default](1) JavaxUsbTopologyUpdater.c.build_device[121] Could not access
/dev/bus/usb/001/001
[hotplug](3) JavaxUsbTopologyUpdater.c.build_device[117] Building device
/dev/bus/usb/002/001
[default](1) JavaxUsbTopologyUpdater.c.build_device[121] Could not access
/dev/bus/usb/002/001
The lines go on to list the other device combinations but the error messages
are essentially the same.
I believe the USB access should be correct, but the error message indicates
otherwise.
Here is how I have mounted the usbfs (insecurely, but it should do the
trick):
b...@kronos:~$ mount | grep usbfs
usbfs on /proc/bus/usb type usbfs (rw,devmode=0666)
b...@kronos:~$ ls -l /proc/bus/usb/007/003
-rw-rw-rw- 1 root root 77 2008-12-12 10:33 /proc/bus/usb/007/003
b...@kronos:~$ uname -a
Linux kronos 2.6.27-9-generic #1 SMP Thu Nov 20 22:15:32 UTC 2008 x86_64
GNU/Linux
I suspect it is something trivial I have forgotten to do but I can not seem
to spot it at this stage.
Has anyone seen this issue before and if you have, any hints on how I can
fix it?
Cheers,
Ben.
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