On Fri, Aug 17, 2012 at 3:49 PM, David Grant <davidgr...@gmail.com> wrote:
> On Wed, Aug 15, 2012 at 7:28 PM, Xiaofan Chen <xiaof...@gmail.com> wrote:
>
>> On Thu, Aug 16, 2012 at 5:32 AM, David Grant <davidgr...@gmail.com>
>> wrote:
>> > Ok, so that sounds promising. I guess the next question is: is it
>> possible
>> > to use libwdi to install a filter driver for a device, or to replace
>> that
>> > device's driver, take over the device, and then put everything back to
>> where
>> > it was, all without a reboot?
>> >
>>
>> You can use install-filter to install and uninstall libusb-win32 filter
>> on the fly without a reboot. But take note you need to use 32bit
>> install-filter.exe for 32bit system and 64bit install-filter.exe for
>> 64bit system.
>>
>> http://sourceforge.net/p/libusb-win32/code/413/tree/branches/libusb-testing/src/install-filter-help.txt
>>
>>
> Thanks Xiaofan, that's what I'm thinking right now might be our best
> option. Are there any limitations I should be aware of when it comes to
> accessing a device via the filter driver?
>
After looking at what VMWare View Client does, they seem to replace the
existing driver with their own generic USB driver called vmusb.sys after
the user decides to remote a particular USB device. Then after the user
decides to un-remote the device, or disconnects their session, it switches
the driver back to the appropriate driver (USB mass storage driver for
example). All without a reboot. I wonder if libusbK.sys can achieve do the
same thing for us at runtime.
I'll have to play around some more!
Dave
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