[Pcsclite-muscle] Registering virtual readers

[Alexander May]

Am 18.09.2014 um 11:55 schrieb Ludovic Rousseau:
>> - how can I register them as new readers during runtime?
>> - Is there a better point where I could start my server socket thread?
>> Doing this in IFDHCreateChannel requires a "server reder" that will
>> never connect to any card, which is a little ugly in my opinion.
> The serial configuration interface may the best you can use.
>
> pcsc-lite implements RFReCheckReaderConf() to recheck the serial
> configuration. This code is used in hotplug_libusb.c but has been
> removed from hotplug_libudev.c.
>
> The idea is to send a signal SIGUSR1 to pcscd to tell it to reload the
> serial configuration.
> You may have 10 virtual readers configured as 10 serial devices.
> IFDHCreateChannel() would fail for non existent readers.
> On the next SIGUSR1 signal each configured serial driver should be
> called again and IFDHCreateChannel() would succeed if the reader is
> now available.
>
> You can experiment on that idea.
>
That sounds very good. I changed my code accordingly, configured some
readers that return IFD_NO_SUCH_DEVICE on IFDHCreateChannel as long as
no connection is present and change their behavor when a client is
connect to return IFD_SUCCESS.
Unfortunately I semm to be unable to trigger the rescaning of the reader
configuration. I even tried sending SIGUSR1 manually from another shell
or calling pcscd -H. But neither worked. At least my IFDHCreateChannel
isn't called again.
Am I missing something? (In case it matters, I'm using Ubuntu 12.04 LTS
with default pcsc-lite 1.7.4)

Bye,

-- 
BSc Alexander May, Senior Software Engineer
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