Re: [PATCH v1 0/3] Add virtual serial null modem emulation driver
From: Grant Edwards
Date: Mon Jan 06 2020 - 17:07:05 EST
On 2020-01-06, H. Peter Anvin <hpa@xxxxxxxxx> wrote:
> On 2020-01-05 23:21, Rishi Gupta wrote:
>> The driver named ttyvs creates virtual tty/serial device which
>> emulates behaviour of a real serial port device. Serial port events
>> like parity, frame, overflow errors, ring indications, break
>> assertions, flow controls are also emulated.
Brilliant! I've wanted that for decades. It would vastly simplify
the implementation of some network-attached serial ports.
> OK, I believe I have asked this before, at least when this has come up in
> other contexts: any reason not to do this by adding the missing elements to
> the pty interface? For fixed-name nodes, the legacy PTY interface is basically
> what you need.
I proposed doing exactly that many years ago, and I even offered to do
it if there was some indication it would be accepted. The offer was
ignored, and I never got far enough through the PTY code to determine
if adding the required features would cause any problems for existing
Grant Edwards grant.b.edwards Yow! What PROGRAM are they