On 1048270129 seconds since the Beginning of the UNIX epoch
"Stefan Sonnenberg-Carstens" wrote:
>

>I followed some docs and found that a device driver (can/should) support
>these operations:
>open,close,probe,attach,read,write,ioctl - complete ?

From The Design and Implementation of the 4.4BSD Operating System[1]
pages 196-204 you find that there are two kinds of devices character
and block.  They support:

Block devices:

	open
	strategy
	close
	dump
	psize

Character devices:

	open
	close
	ioctl
	mmap
	read
	reset
	select
	stop
	mmap

This may have changed since 4.4BSD, but it is a good starting point.

[1]	Marshall K. McKusick, Keith Bostic, Michael J. Karels and
	John S. Quarterman.  The Design and Implementation of the
	4.4BSD Operating System.  Addison-Wesley Publishing Company,
	1996.

--
    Roland Dowdeswell                      http://www.Imrryr.ORG/~elric/