[newlib-cygwin] Cygwin: pty: Transfer input for native app only if the stdin is pcon.
Corinna Vinschen
corinna@sourceware.org
Mon Mar 8 15:34:10 GMT 2021
https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=12325677f73a540d1e515cfc742395c2716d8964
commit 12325677f73a540d1e515cfc742395c2716d8964
Author: Takashi Yano via Cygwin-patches <cygwin-patches@cygwin.com>
Date: Mon Mar 8 23:55:10 2021 +0900
Cygwin: pty: Transfer input for native app only if the stdin is pcon.
- Currently, transfer input is triggered even if the stdin of native
app is not a pseudo console. With this patch it is triggered only
if the stdin is a pseudo console.
Diff:
---
winsup/cygwin/fhandler_tty.cc | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/winsup/cygwin/fhandler_tty.cc b/winsup/cygwin/fhandler_tty.cc
index 3bfc8c0c8..47d59e8c5 100644
--- a/winsup/cygwin/fhandler_tty.cc
+++ b/winsup/cygwin/fhandler_tty.cc
@@ -3084,14 +3084,16 @@ fhandler_pty_slave::setup_pseudoconsole (bool nopcon)
if (get_ttyp ()->pcon_pid && get_ttyp ()->pcon_pid != myself->pid
&& !!pinfo (get_ttyp ()->pcon_pid) && get_ttyp ()->pcon_activated)
{
- /* Send CSI6n just for requesting transfer input. */
- DWORD n;
- WaitForSingleObject (input_mutex, INFINITE);
- get_ttyp ()->req_xfer_input = true;
- get_ttyp ()->pcon_start = true;
- get_ttyp ()->pcon_start_pid = myself->pid;
- WriteFile (get_output_handle_cyg (), "\033[6n", 4, &n, NULL);
- ReleaseMutex (input_mutex);
+ if (GetStdHandle (STD_INPUT_HANDLE) == get_handle ())
+ { /* Send CSI6n just for requesting transfer input. */
+ DWORD n;
+ WaitForSingleObject (input_mutex, INFINITE);
+ get_ttyp ()->req_xfer_input = true;
+ get_ttyp ()->pcon_start = true;
+ get_ttyp ()->pcon_start_pid = myself->pid;
+ WriteFile (get_output_handle_cyg (), "\033[6n", 4, &n, NULL);
+ ReleaseMutex (input_mutex);
+ }
/* Attach to the pseudo console which already exits. */
pinfo p (get_ttyp ()->pcon_pid);
HANDLE pcon_owner =
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