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

[Takashi Yano]

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.

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