Using the pktcdvd sysfs interface
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-Since Linux 2.6.19, the pktcdvd module has a sysfs interface
+Since Linux 2.6.20, the pktcdvd module has a sysfs interface
and can be controlled by it. For example the "pktcdvd" tool uses
this interface. (see http://people.freenet.de/BalaGi#pktcdvd )