[PATCH] Cygwin: pty: Disable clear screen for ssh sessions with -t option.

[Corinna Vinschen]

On Oct 24 19:17, Takashi Yano wrote:
> On Thu, 24 Oct 2019 11:38:17 +0200
> Corinna Vinschen wrote:
> > Well, what I see when starting cmd.exe with this patch is a short
> > flicker in the existing output in mintty, but the cursor position
> > stays the same. and cmd.exe output is where you'd expect it.
> 
> I mean:
> 1) start mintty
> 2) ps
> 3) script
> 4) cmd
> 
> In my environment, output of ps command disappears.

In mine, too.  This does not occur w/o running script.

> > If it's running as Local System (actually SYSTEM), it should have
> > the user SID S-1-5-18.  You can just check this with
> > 
> >   cygheap->user.saved_sid () == well_known_system_sid
> 
> Thanks for the advice. Now I have confirmed the following code
> works as expected.
> 
> inline static bool
> is_running_as_service (void)
> {
>   return check_token_membership (well_known_service_sid)
>     || RtlEqualSid (well_known_system_sid, cygheap->user.saved_sid ());

Why don't you use operator cygpsid::== as outlined above?  That's what
it's made for :)


Corinna

-- 
Corinna Vinschen
Cygwin Maintainer
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