chardev/char-win-stdio.c: restore old console mode

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 903cc9e117)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
songziming 2024-07-22 17:52:55 +08:00 committed by Michael Tokarev
parent a983552869
commit d699ffd0eb

View File

@ -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);
}