Re: [Qemu-devel] [PATCH] char: disable stdio echo on resume from suspend.

[Marcel Apfelbaum <marcel.apfelbaum@gmail.com>]

On 01/05/2015 11:21 AM, Gal Hammer wrote:
> The monitor's auto-completion feature stopped working when stdio is used
> as an input and qemu was resumed after it was suspended (using ctrl-z).

Thanks Gal, it works now!

Tested-by: Marcel Apfelbaum <marcel@redhat.com>

>
> Signed-off-by: Gal Hammer <ghammer@redhat.com>
> ---
>   qemu-char.c | 11 +++++++++++
>   1 file changed, 11 insertions(+)
>
> diff --git a/qemu-char.c b/qemu-char.c
> index ef84b53..786df33 100644
> --- a/qemu-char.c
> +++ b/qemu-char.c
> @@ -1113,12 +1113,22 @@ static int old_fd0_flags;
>   static bool stdio_in_use;
>   static bool stdio_allow_signal;
>
> +static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo);
> +
>   static void term_exit(void)
>   {
>       tcsetattr (0, TCSANOW, &oldtty);
>       fcntl(0, F_SETFL, old_fd0_flags);
>   }
>
> +static void term_stdio_handler(int sig)
> +{
> +    if (sig == SIGCONT) {
> +        /* echo should be off after resume from suspend. */
> +        qemu_chr_set_echo_stdio(NULL, false);
> +    }
> +}
> +
>   static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
>   {
>       struct termios tty;
> @@ -1165,6 +1175,7 @@ static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
>       tcgetattr(0, &oldtty);
>       qemu_set_nonblock(0);
>       atexit(term_exit);
> +    signal(SIGCONT, term_stdio_handler);
>
>       chr = qemu_chr_open_fd(0, 1);
>       chr->chr_close = qemu_chr_close_stdio;
>