[PATCH] Cygwin: pty: Set input_available_event only for cygwin pipe.

[Takashi Yano]

On Mon, 18 Jan 2021 16:27:00 +0100
Corinna Vinschen wrote:
> On Jan 19 00:00, Takashi Yano via Cygwin-patches wrote:
> > Hi Corinna,
> > 
> > On Fri, 15 Jan 2021 18:26:31 +0900
> > Takashi Yano wrote:
> > > - cat exits immediately in the following senario.
> > >     1) Execute env CYGWIN=disable_pcon script
> > >     2) Execute cmd.exe
> > >     3) Execute cat in cmd.exe.
> > >   This is caused by setting input_available_event for the pipe for
> > >   non-cygwin app. This patch fixes the issue.
> > > ---
> > >  winsup/cygwin/fhandler_tty.cc | 3 ++-
> > >  1 file changed, 2 insertions(+), 1 deletion(-)
> > > 
> > > diff --git a/winsup/cygwin/fhandler_tty.cc b/winsup/cygwin/fhandler_tty.cc
> > > index e4993bf31..0b9901974 100644
> > > --- a/winsup/cygwin/fhandler_tty.cc
> > > +++ b/winsup/cygwin/fhandler_tty.cc
> > > @@ -394,7 +394,8 @@ fhandler_pty_master::accept_input ()
> > >  	}
> > >      }
> > >  
> > > -  SetEvent (input_available_event);
> > > +  if (write_to == get_output_handle ())
> > > +    SetEvent (input_available_event);
> > >    ReleaseMutex (input_mutex);
> > >    return ret;
> > >  }
> > > -- 
> > > 2.30.0
> > > 
> > 
> > I would be happy if you could review this patch as well.
> 
> Sorry, I missed that one!  Pushed.

Thanks!

-- 
Takashi Yano <takashi.yano@nifty.ne.jp>