"Richard L. Hamilton" <rlha...@smart.net> wrote:
> crw-rw-rw- 1 root tty 22, 0 Aug 6 11:44 /dev/tty
>
> In other words, sy implements /dev/tty...and probably
> predates STREAMS-based ttys even.
>
> (I'm having SVR2 flashbacks, having read a lot of that code
> way back when. In fact, I think back in even earlier code,
> the sy driver handled something else in addition, maybe
> the console, as another minor device. But maybe my memory
> is playing tricks on me.)
The first streams based tty implementation was in SunOS-4.0.
TIOCNOTTY was introduced by BSD and not available in AT&T versions
before Svr4
Jörg
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