This is a very basic circul buffer driver. When you write() to it, it adds bytes
to the buffer and when you read() from it, you read what's in the buffer and
consme it.

Writing example:
# echo "Foo" > /dev/circchar

Reading example:
# cat /dev/circchar
Foo

--
Karim Yaghmour
karim.yaghmour@opersys.com