[Info-vax] Reverse telnet to a terminal emulator?

Snowshoe no at spam.please
Tue Jul 19 18:27:57 EDT 2011


On 7/19/2011 5:08 PM, VAXman- @SendSpamHere.ORG wrote:
> In article<j04nl8$q39$1 at speranza.aioe.org>, Snowshoe<no at spam.please>  writes:
>> I have done this in the past, sort of. (swiped
>> SYS$EXAMPLES:ALPHA_LOGGER.C and changed the non-pseudoterminal portion)
>>   The pseudoterminal part is actually strange code if you have to tamper
>> with it, but I didn't.
>
> What's so strange about it?

[snip code]

The buffers must be in that specially allocated memory which must be 
page aligned, your data can't be just anywhere. (I got bit by this when 
one of my changes meant the PTD side tried to access memory outside its 
special area, and it failed. I had to add an extra copy of my data to 
its special area)

I/O to a device that doesn't use $QIO. That's kind of weird for VMS. 
I've also tinkered with the TW/PY pseudoterminal pair, long long ago. 
The PY end used standard QIOs. Want to see what the application just 
wrote to the terminal? Just $QIO READVBLK to the PY device.

Not super-strange, just not what I expect from VMS.



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