diff mbox series

[Stable-7.2.14,08/40] chardev/char-win-stdio.c: restore old console mode

Message ID 20240906051633.10288-8-mjt@tls.msk.ru
State New
Headers show
Series Patch Round-up for stable 7.2.14, freeze on 2024-09-16 | expand

Commit Message

Michael Tokarev Sept. 6, 2024, 5:15 a.m. UTC 
From: songziming <s.ziming@hotmail.com>

If I use `-serial stdio` on Windows, after QEMU exits, the terminal
could not handle arrow keys and tab any more. Because stdio backend
on Windows sets console mode to virtual terminal input when starts,
but does not restore the old mode when finalize.

This small patch saves the old console mode and set it back.

Signed-off-by: Ziming Song <s.ziming@hotmail.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <ME3P282MB25488BE7C39BF0C35CD0DA5D8CA82@ME3P282MB2548.AUSP282.PROD.OUTLOOK.COM>
(cherry picked from commit 903cc9e1173e0778caa50871e8275c898770c690)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff mbox series

Patch

diff --git a/chardev/char-win-stdio.c b/chardev/char-win-stdio.c
index eb830eabd9..6e59db84dd 100644
--- a/chardev/char-win-stdio.c
+++ b/chardev/char-win-stdio.c
@@ -33,6 +33,7 @@ 
 struct WinStdioChardev {
     Chardev parent;
     HANDLE  hStdIn;
+    DWORD   dwOldMode;
     HANDLE  hInputReadyEvent;
     HANDLE  hInputDoneEvent;
     HANDLE  hInputThread;
@@ -159,6 +160,7 @@  static void qemu_chr_open_stdio(Chardev *chr,
     }
 
     is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
+    stdio->dwOldMode = dwMode;
 
     if (is_console) {
         if (qemu_add_wait_object(stdio->hStdIn,
@@ -221,6 +223,9 @@  static void char_win_stdio_finalize(Object *obj)
 {
     WinStdioChardev *stdio = WIN_STDIO_CHARDEV(obj);
 
+    if (stdio->hStdIn != INVALID_HANDLE_VALUE) {
+        SetConsoleMode(stdio->hStdIn, stdio->dwOldMode);
+    }
     if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
         CloseHandle(stdio->hInputReadyEvent);
     }