Oops, I wasn't re-setting the 'ret' variable so it still returned an error
even tho it succeeded. Should be fixed in CVS now.
On Tue, 21 Oct 2003, Aaron Metzger wrote:
>Dan Streetman wrote:
>>
>> I think using the UsbInterfacePolicy.forceClaim() is the best way to do
>> things, and the Linux implementation can keep up with changes the Linux
>> kernel makes in how it's done at a low level. Also, it hopefully will be
>> somewhat portable to other OSes...
>>
>>
>
>To experiment with the UsbInterfacePolicy forceClaim() functionality,
>I made a small change to the UsbInterfacePanel class in the UsbView
>tool. I pass an instance of UsbInterfacePolicy which returns true for
>all three methods as follows:
>
>[EMAIL PROTECTED] swing]$ cvs diff UsbInterfacePanel.java
>Index: UsbInterfacePanel.java
>===================================================================
>RCS file:
>/cvsroot/javax-usb/javax-usb-ri/src/com/ibm/jusb/tools/swing/UsbInterfacePanel.java,v
>retrieving revision 1.5
>diff -r1.5 UsbInterfacePanel.java
>29a30,41
> >
> > private class Policy implements javax.usb.UsbInterfacePolicy
> > {
> >
> > public boolean forceClaim(UsbInterface usb_interface) {return
>true;}
> >
> > public boolean open(UsbPipe pipe, Object key) {return true;}
> >
> > public boolean release(UsbInterface usb_interface, Object key)
>{return true;}
> >
> > }
> >
>93c105
>< try { usbInterface.claim(); }
>---
> > try { usbInterface.claim(new Policy()); }
>[
>
>
>
>Using the latest javax-usb code from CVS on a Redhat 9 system running
>kernel 2.4.23-pre7 executing the UsbView program as root, the first
>attempt to forcefully claim an interface fails with "Could not claim
>interface: Device or resource busy.". The second and all subsequent
>calls to "claim" succeed. Unplugging and replugging the USB device
>(or rebooting) puts it back in the state of having the first claim
>fail again.
>
>
>
>
>
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--
Dan Streetman
[EMAIL PROTECTED]
---------------------
186,272 miles per second:
It isn't just a good idea, it's the law!
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