Re: [PATCH 4/5] chardev/char-socket.c: Add yank feature

["Daniel P. Berrangé" <berrange@redhat.com>]

On Mon, May 11, 2020 at 01:14:47PM +0200, Lukas Straub wrote:
> Add yank option which is passed to the socket-channel.
> 
> Signed-off-by: Lukas Straub <lukasstraub2@web.de>
> ---
>  chardev/char-socket.c | 8 ++++++++
>  chardev/char.c        | 3 +++
>  qapi/char.json        | 5 ++++-
>  3 files changed, 15 insertions(+), 1 deletion(-)
> 
> diff --git a/chardev/char-socket.c b/chardev/char-socket.c
> index 185fe38dda..e476358941 100644
> --- a/chardev/char-socket.c
> +++ b/chardev/char-socket.c
> @@ -65,6 +65,7 @@ typedef struct {
>      int max_size;
>      int do_telnetopt;
>      int do_nodelay;
> +    int do_yank;
>      int *read_msgfds;
>      size_t read_msgfds_num;
>      int *write_msgfds;
> @@ -877,6 +878,9 @@ static int tcp_chr_new_client(Chardev *chr, QIOChannelSocket *sioc)
>      if (s->do_nodelay) {
>          qio_channel_set_delay(s->ioc, false);
>      }
> +    if (s->do_yank) {
> +        qio_channel_set_yank(s->ioc, true);
> +    }

This should call yank_register_function() to  register a local
callback, which then invokes qio_channel_shutdown() upon acting,
avoiding the need to add this qio_channel_set_yank method.

Likewise for the migration code in the next patch.

Regards,
Daniel
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