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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>
This commit is contained in:
songziming 2024-07-22 17:52:55 +08:00 committed by Marc-André Lureau
parent 865714cb3b
commit 903cc9e117
1 changed files with 5 additions and 0 deletions
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5
chardev/char-win-stdio.c
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@ -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);
}