tty and filesystem

[Naomaru Itoi <itoi_(_at_)_eecs_(_dot_)_umich_(_dot_)_edu>]

Hello.

I am trying to write a filesystem in OpenBSD-2.2 that talks to a
device through a serial port.  I have a trouble starting to code
because I am not sure which interface I can use.  Can I use standard
tty line decipline (ttyopen(), ttread(), etc.) for that purpose?  How
about cttyopen(), cttyread(), etc?  Can I call them from a kernel?

Thanks.

--
Concentration .. Naomaru Itoi