As mdean wrote:
Stop tty output (i believe)
(Can't find any use of it.)
Convert a dev_t into a struct tty *. Useful for tty drivers only,
> d_strategy (I've seen this one in another unix book, I just can't remeber
> what it is actually used for)
Something you should read a Unix driver book for. The central IO
routine for `strategy-controlled' IO, like disk drivers.
> and why does d_maj=-1 in the driver when I would think you need to set it
> to the major of your device.
Dynamic major # assignment. The ultimate goal once devfs is running
completely, but currently probably not very useful.
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