These commands are required for the "Disk-At-Once" write process:
WORMIOCREADSESSIONINFO returns the length of the lead-in and lead-out areas
and WORMIOCWRITESESSION is used to send the table of contents of the disk.
The worm driver is alpha-usable! I've stuffed everything that is
needed into the kernel driver, including the logic to select
between different vendor's quirks.
Disclaimer: this has by now _only_ been tested on a heavily tweaked
2.0.5R system. I've done my best to retrofit it into -current, but
i don't have a chance yet to test it in a -current environment.