Hi

On Sat, Nov 29, 2025 at 5:44 PM Vladimir Sementsov-Ogievskiy <
[email protected]> wrote:

> The logic around the parameter is rather tricky. Let's instead
> explicitly send CHR_EVENT_OPENED in all bakends where needed.
>

backends

I like the general idea, I wonder if I miss something though


>
> Signed-off-by: Vladimir Sementsov-Ogievskiy <[email protected]>
> ---
>  chardev/baum.c           |  7 +++----
>  chardev/char-console.c   |  5 ++---
>  chardev/char-file.c      |  7 +++----
>  chardev/char-hub.c       | 11 +++++------
>  chardev/char-mux.c       | 19 +++++++++++--------
>  chardev/char-null.c      |  7 ++-----
>  chardev/char-parallel.c  | 15 ++++-----------
>  chardev/char-pipe.c      | 14 ++++++--------
>  chardev/char-pty.c       |  6 +-----
>  chardev/char-ringbuf.c   |  3 ++-
>  chardev/char-serial.c    | 18 +++++++++---------
>  chardev/char-socket.c    | 10 +++-------
>  chardev/char-stdio.c     |  7 +++----
>  chardev/char-udp.c       |  6 +-----
>  chardev/char-win-stdio.c |  2 +-
>  chardev/char.c           | 11 +++--------
>  chardev/msmouse.c        |  4 ++--
>  chardev/spice.c          | 13 ++++---------
>  chardev/wctablet.c       |  5 ++---
>  gdbstub/system.c         |  5 ++---
>  include/chardev/char.h   |  3 +--
>  ui/console-vc.c          |  7 ++-----
>  ui/dbus-chardev.c        |  6 ++----
>  ui/gtk.c                 |  9 +++------
>  ui/spice-app.c           | 10 +++-------
>  ui/vdagent.c             |  3 +--
>  26 files changed, 81 insertions(+), 132 deletions(-)
>
> diff --git a/chardev/baum.c b/chardev/baum.c
> index 6b81c97d10..58b74dc98d 100644
> --- a/chardev/baum.c
> +++ b/chardev/baum.c
> @@ -642,10 +642,7 @@ static void char_braille_finalize(Object *obj)
>      }
>  }
>
> -static void baum_chr_open(Chardev *chr,
> -                          ChardevBackend *backend,
> -                          bool *be_opened,
> -                          Error **errp)
> +static void baum_chr_open(Chardev *chr, ChardevBackend *backend, Error
> **errp)
>  {
>      BaumChardev *baum = BAUM_CHARDEV(chr);
>      brlapi_handle_t *handle;
> @@ -670,6 +667,8 @@ static void baum_chr_open(Chardev *chr,
>       * as an integer, but in practice it seems to work
>       */
>      qemu_set_fd_handler(baum->brlapi_fd, baum_chr_read, NULL, baum);
> +
> +    qemu_chr_be_event(chr, CHR_EVENT_OPENED);
>  }
>
>  static void char_braille_class_init(ObjectClass *oc, const void *data)
> diff --git a/chardev/char-console.c b/chardev/char-console.c
> index f3ef1a7748..423f0f4cc4 100644
> --- a/chardev/char-console.c
> +++ b/chardev/char-console.c
> @@ -26,12 +26,11 @@
>  #include "chardev/char-win.h"
>  #include "qemu/module.h"
>
> -static void console_chr_open(Chardev *chr,
> -                             ChardevBackend *backend,
> -                             bool *be_opened,
> +static void console_chr_open(Chardev *chr, ChardevBackend *backend,
>                               Error **errp)
>  {
>      win_chr_set_file(chr, GetStdHandle(STD_OUTPUT_HANDLE), true);
> +    qemu_chr_be_event(chr, CHR_EVENT_OPENED);
>  }
>
>  static void char_console_class_init(ObjectClass *oc, const void *data)
> diff --git a/chardev/char-file.c b/chardev/char-file.c
> index 568600bb7c..34ef386abc 100644
> --- a/chardev/char-file.c
> +++ b/chardev/char-file.c
> @@ -34,10 +34,7 @@
>  #include "chardev/char-fd.h"
>  #endif
>
> -static void file_chr_open(Chardev *chr,
> -                          ChardevBackend *backend,
> -                          bool *be_opened,
> -                          Error **errp)
> +static void file_chr_open(Chardev *chr, ChardevBackend *backend, Error
> **errp)
>  {
>      ChardevFile *file = backend->u.file.data;
>  #ifdef _WIN32
> @@ -100,6 +97,8 @@ static void file_chr_open(Chardev *chr,
>          return;
>      }
>  #endif
> +
> +    qemu_chr_be_event(chr, CHR_EVENT_OPENED);
>  }
>
>  static void file_chr_parse(QemuOpts *opts, ChardevBackend *backend,
> diff --git a/chardev/char-hub.c b/chardev/char-hub.c
> index 11556dfa72..aa6058c2f6 100644
> --- a/chardev/char-hub.c
> +++ b/chardev/char-hub.c
> @@ -203,10 +203,7 @@ static void hub_chr_update_read_handlers(Chardev *chr)
>      }
>  }
>
> -static void hub_chr_open(Chardev *chr,
> -                         ChardevBackend *backend,
> -                         bool *be_opened,
> -                         Error **errp)
> +static void hub_chr_open(Chardev *chr, ChardevBackend *backend, Error
> **errp)
>  {
>      ChardevHub *hub = backend->u.hub.data;
>      HubChardev *d = HUB_CHARDEV(chr);
> @@ -241,8 +238,10 @@ static void hub_chr_open(Chardev *chr,
>          list = list->next;
>      }
>
> -    /* Closed until an explicit event from backend */
> -    *be_opened = false;
> +    /*
> +     * Closed until an explicit event from backend, so we don't
> +     * send CHR_EVENT_OPENED now.
> +     */
>  }
>
>  static void hub_chr_parse(QemuOpts *opts, ChardevBackend *backend, Error
> **errp)
> diff --git a/chardev/char-mux.c b/chardev/char-mux.c
> index f38d66b21f..7210df431f 100644
> --- a/chardev/char-mux.c
> +++ b/chardev/char-mux.c
> @@ -361,10 +361,7 @@ void mux_set_focus(Chardev *chr, unsigned int focus)
>      mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
>  }
>
> -static void mux_chr_open(Chardev *chr,
> -                         ChardevBackend *backend,
> -                         bool *be_opened,
> -                         Error **errp)
> +static void mux_chr_open(Chardev *chr, ChardevBackend *backend, Error
> **errp)
>  {
>      ChardevMux *mux = backend->u.mux.data;
>      Chardev *drv;
> @@ -377,11 +374,17 @@ static void mux_chr_open(Chardev *chr,
>      }
>
>      d->focus = -1;
> -    /* only default to opened state if we've realized the initial
> -     * set of muxes
> +    if (!qemu_chr_fe_init(&d->chr, drv, errp)) {
> +        return;
> +    }
> +
> +    /*
> +     * Only move to opened state if we've realized
> +     * the initial set of muxes:
>       */
> -    *be_opened = muxes_opened;
> -    qemu_chr_fe_init(&d->chr, drv, errp);
> +    if (muxes_opened) {
> +        qemu_chr_be_event(chr, CHR_EVENT_OPENED);
> +    }
>  }
>
>  static void mux_chr_parse(QemuOpts *opts, ChardevBackend *backend, Error
> **errp)
> diff --git a/chardev/char-null.c b/chardev/char-null.c
> index 674603b380..900b5febb6 100644
> --- a/chardev/char-null.c
> +++ b/chardev/char-null.c
> @@ -26,12 +26,9 @@
>  #include "chardev/char.h"
>  #include "qemu/module.h"
>
> -static void null_chr_open(Chardev *chr,
> -                          ChardevBackend *backend,
> -                          bool *be_opened,
> -                          Error **errp)
> +static void null_chr_open(Chardev *chr, ChardevBackend *backend, Error
> **errp)
>  {
> -    *be_opened = false;
> +    /* do not send CHR_EVENT_OPENED */
>  }
>
>  static void char_null_class_init(ObjectClass *oc, const void *data)
> diff --git a/chardev/char-parallel.c b/chardev/char-parallel.c
> index 1be1ef4629..359efa3c9c 100644
> --- a/chardev/char-parallel.c
> +++ b/chardev/char-parallel.c
> @@ -157,10 +157,7 @@ static int parallel_chr_ioctl(Chardev *chr, int cmd,
> void *arg)
>      return 0;
>  }
>
> -static void parallel_chr_open_fd(Chardev *chr,
> -                                int fd,
> -                                bool *be_opened,
> -                                Error **errp)
> +static void parallel_chr_open_fd(Chardev *chr, int fd, Error **errp)
>  {
>      ParallelChardev *drv = PARALLEL_CHARDEV(chr);
>
> @@ -172,6 +169,7 @@ static void parallel_chr_open_fd(Chardev *chr,
>      }
>
>      drv->mode = IEEE1284_MODE_COMPAT;
> +    qemu_chr_be_event(chr, CHR_EVENT_OPENED);
>  }
>  #endif /* __linux__ */
>
> @@ -227,21 +225,16 @@ static int parallel_chr_ioctl(Chardev *chr, int cmd,
> void *arg)
>      return 0;
>  }
>
> -static void parallel_chr_open_fd(Chardev *chr,
> -                                int fd,
> -                                bool *be_opened,
> -                                Error **errp)
> +static void parallel_chr_open_fd(Chardev *chr, int fd, Error **errp)
>  {
>      ParallelChardev *drv = PARALLEL_CHARDEV(chr);
>      drv->fd = fd;
> -    *be_opened = false;
>  }
>  #endif
>
>  #ifdef HAVE_CHARDEV_PARALLEL
>  static void parallel_chr_open(Chardev *chr,
>                                ChardevBackend *backend,
> -                              bool *be_opened,
>                                Error **errp)
>  {
>      ChardevHostdev *parallel = backend->u.parallel.data;
> @@ -251,7 +244,7 @@ static void parallel_chr_open(Chardev *chr,
>      if (fd < 0) {
>          return;
>      }
> -    parallel_chr_open_fd(chr, fd, be_opened, errp);
> +    parallel_chr_open_fd(chr, fd, errp);
>  }
>
>  static void parallel_chr_parse(QemuOpts *opts, ChardevBackend *backend,
> diff --git a/chardev/char-pipe.c b/chardev/char-pipe.c
> index e84492d42b..2f26372dfc 100644
> --- a/chardev/char-pipe.c
> +++ b/chardev/char-pipe.c
> @@ -103,10 +103,7 @@ static int win_chr_pipe_init(Chardev *chr, const char
> *filename,
>      return -1;
>  }
>
> -static void pipe_chr_open(Chardev *chr,
> -                          ChardevBackend *backend,
> -                          bool *be_opened,
> -                          Error **errp)
> +static void pipe_chr_open(Chardev *chr, ChardevBackend *backend, Error
> **errp)
>  {
>      ChardevHostdev *opts = backend->u.pipe.data;
>      const char *filename = opts->device;
> @@ -114,14 +111,13 @@ static void pipe_chr_open(Chardev *chr,
>      if (win_chr_pipe_init(chr, filename, errp) < 0) {
>          return;
>      }
> +
> +    qemu_chr_be_event(chr, CHR_EVENT_OPENED);
>  }
>
>  #else
>
> -static void pipe_chr_open(Chardev *chr,
> -                          ChardevBackend *backend,
> -                          bool *be_opened,
> -                          Error **errp)
> +static void pipe_chr_open(Chardev *chr, ChardevBackend *backend, Error
> **errp)
>  {
>      ChardevHostdev *opts = backend->u.pipe.data;
>      int fd_in, fd_out;
> @@ -158,6 +154,8 @@ static void pipe_chr_open(Chardev *chr,
>          }
>          return;
>      }
> +
> +    qemu_chr_be_event(chr, CHR_EVENT_OPENED);
>  }
>
>  #endif /* !_WIN32 */
> diff --git a/chardev/char-pty.c b/chardev/char-pty.c
> index 909ab01f5f..d4d69a29a9 100644
> --- a/chardev/char-pty.c
> +++ b/chardev/char-pty.c
> @@ -331,10 +331,7 @@ static int qemu_openpty_raw(int *aslave, char
> *pty_name)
>      return amaster;
>  }
>
> -static void pty_chr_open(Chardev *chr,
> -                         ChardevBackend *backend,
> -                         bool *be_opened,
> -                         Error **errp)
> +static void pty_chr_open(Chardev *chr, ChardevBackend *backend, Error
> **errp)
>  {
>      PtyChardev *s;
>      int master_fd, slave_fd;
> @@ -364,7 +361,6 @@ static void pty_chr_open(Chardev *chr,
>      qio_channel_set_name(s->ioc, name);
>      g_free(name);
>      s->timer_src = NULL;
> -    *be_opened = false;
>
>      /* create symbolic link */
>      if (path) {
> diff --git a/chardev/char-ringbuf.c b/chardev/char-ringbuf.c
> index 19652fe2b3..30b17a96d3 100644
> --- a/chardev/char-ringbuf.c
> +++ b/chardev/char-ringbuf.c
> @@ -94,7 +94,6 @@ static void char_ringbuf_finalize(Object *obj)
>
>  static void ringbuf_chr_open(Chardev *chr,
>                               ChardevBackend *backend,
> -                             bool *be_opened,
>                               Error **errp)
>  {
>      ChardevRingbuf *opts = backend->u.ringbuf.data;
> @@ -111,6 +110,8 @@ static void ringbuf_chr_open(Chardev *chr,
>      d->prod = 0;
>      d->cons = 0;
>      d->cbuf = g_malloc0(d->size);
> +
> +    qemu_chr_be_event(chr, CHR_EVENT_OPENED);
>  }
>
>  void qmp_ringbuf_write(const char *device, const char *data,
> diff --git a/chardev/char-serial.c b/chardev/char-serial.c
> index 54c2b3935c..9995f18425 100644
> --- a/chardev/char-serial.c
> +++ b/chardev/char-serial.c
> @@ -41,14 +41,15 @@
>
>  #ifdef _WIN32
>
> -static void serial_chr_open(Chardev *chr,
> -                            ChardevBackend *backend,
> -                            bool *be_opened,
> -                            Error **errp)
> +static void serial_chr_open(Chardev *chr, ChardevBackend *backend, Error
> **errp)
>  {
>      ChardevHostdev *serial = backend->u.serial.data;
> +    int ret = win_chr_serial_init(chr, serial->device, errp);
> +    if (ret < 0) {
> +        return;
> +    }
>
> -    win_chr_serial_init(chr, serial->device, errp);
> +    qemu_chr_be_event(chr, CHR_EVENT_OPENED);
>  }
>
>  #elif defined(__linux__) || defined(__sun__) || defined(__FreeBSD__)
> \
> @@ -258,10 +259,7 @@ static int serial_chr_ioctl(Chardev *chr, int cmd,
> void *arg)
>      return 0;
>  }
>
> -static void serial_chr_open(Chardev *chr,
> -                            ChardevBackend *backend,
> -                            bool *be_opened,
> -                            Error **errp)
> +static void serial_chr_open(Chardev *chr, ChardevBackend *backend, Error
> **errp)
>  {
>      ChardevHostdev *serial = backend->u.serial.data;
>      int fd;
> @@ -281,6 +279,8 @@ static void serial_chr_open(Chardev *chr,
>          close(fd);
>          return;
>      }
> +
> +    qemu_chr_be_event(chr, CHR_EVENT_OPENED);
>  }
>  #endif /* __linux__ || __sun__ */
>
> diff --git a/chardev/char-socket.c b/chardev/char-socket.c
> index 329cd9f0a8..3f57ef4016 100644
> --- a/chardev/char-socket.c
> +++ b/chardev/char-socket.c
> @@ -1365,10 +1365,7 @@ static bool
> qmp_chardev_validate_socket(ChardevSocket *sock,
>  }
>
>
> -static void tcp_chr_open(Chardev *chr,
> -                         ChardevBackend *backend,
> -                         bool *be_opened,
> -                         Error **errp)
> +static void tcp_chr_open(Chardev *chr, ChardevBackend *backend, Error
> **errp)
>  {
>      SocketChardev *s = SOCKET_CHARDEV(chr);
>      ChardevSocket *sock = backend->u.socket.data;
> @@ -1439,9 +1436,6 @@ static void tcp_chr_open(Chardev *chr,
>      }
>      s->registered_yank = true;
>
> -    /* be isn't opened until we get a connection */
> -    *be_opened = false;
> -
>      update_disconnected_filename(s);
>
>      if (s->is_listen) {
> @@ -1454,6 +1448,8 @@ static void tcp_chr_open(Chardev *chr,
>              return;
>          }
>      }
> +
> +    /* be isn't opened until we get a connection */
>  }
>
>  static void tcp_chr_parse(QemuOpts *opts, ChardevBackend *backend, Error
> **errp)
> diff --git a/chardev/char-stdio.c b/chardev/char-stdio.c
> index f0920a23fa..534f6ed565 100644
> --- a/chardev/char-stdio.c
> +++ b/chardev/char-stdio.c
> @@ -85,10 +85,7 @@ static void term_stdio_handler(int sig)
>      stdio_chr_set_echo(NULL, stdio_echo_state);
>  }
>
> -static void stdio_chr_open(Chardev *chr,
> -                           ChardevBackend *backend,
> -                           bool *be_opened,
> -                           Error **errp)
> +static void stdio_chr_open(Chardev *chr, ChardevBackend *backend, Error
> **errp)
>  {
>      ChardevStdio *opts = backend->u.stdio.data;
>      struct sigaction act;
> @@ -123,6 +120,8 @@ static void stdio_chr_open(Chardev *chr,
>
>      stdio_allow_signal = !opts->has_signal || opts->signal;
>      stdio_chr_set_echo(chr, false);
> +
> +    qemu_chr_be_event(chr, CHR_EVENT_OPENED);
>  }
>  #endif
>
> diff --git a/chardev/char-udp.c b/chardev/char-udp.c
> index 099f76b8c2..b835a967e1 100644
> --- a/chardev/char-udp.c
> +++ b/chardev/char-udp.c
> @@ -188,10 +188,7 @@ static void udp_chr_parse(QemuOpts *opts,
> ChardevBackend *backend, Error **errp)
>      }
>  }
>
> -static void upd_chr_open(Chardev *chr,
> -                         ChardevBackend *backend,
> -                         bool *be_opened,
> -                         Error **errp)
> +static void upd_chr_open(Chardev *chr, ChardevBackend *backend, Error
> **errp)
>  {
>      ChardevUdp *udp = backend->u.udp.data;
>      SocketAddress *local_addr = socket_address_flatten(udp->local);
> @@ -215,7 +212,6 @@ static void upd_chr_open(Chardev *chr,
>
>      s->ioc = QIO_CHANNEL(sioc);
>      /* be isn't opened until we get a connection */
> -    *be_opened = false;
>  }
>
>  static void char_udp_class_init(ObjectClass *oc, const void *data)
> diff --git a/chardev/char-win-stdio.c b/chardev/char-win-stdio.c
> index 866f3a2039..0535960ff1 100644
> --- a/chardev/char-win-stdio.c
> +++ b/chardev/char-win-stdio.c
> @@ -144,7 +144,6 @@ static void win_stiod_chr_set_echo(Chardev *chr, bool
> echo)
>
>  static void win_stdio_chr_open(Chardev *chr,
>                                 ChardevBackend *backend,
> -                               bool *be_opened,
>                                 Error **errp)
>  {
>      ChardevStdio *opts = backend->u.stdio.data;
> @@ -208,6 +207,7 @@ static void win_stdio_chr_open(Chardev *chr,
>
>      win_stiod_chr_set_echo(chr, false);
>
> +    qemu_chr_be_event(chr, CHR_EVENT_OPENED);
>      return;
>
>  err3:
> diff --git a/chardev/char.c b/chardev/char.c
> index df37d1df16..44bfed3627 100644
> --- a/chardev/char.c
> +++ b/chardev/char.c
> @@ -246,8 +246,7 @@ int qemu_chr_add_client(Chardev *s, int fd)
>          CHARDEV_GET_CLASS(s)->chr_add_client(s, fd) : -1;
>  }
>
> -static void qemu_char_open(Chardev *chr, ChardevBackend *backend,
> -                           bool *be_opened, Error **errp)
> +static void qemu_char_open(Chardev *chr, ChardevBackend *backend, Error
> **errp)
>  {
>      ChardevClass *cc = CHARDEV_GET_CLASS(chr);
>      /* Any ChardevCommon member would work */
> @@ -268,7 +267,7 @@ static void qemu_char_open(Chardev *chr,
> ChardevBackend *backend,
>      }
>
>      if (cc->chr_open) {
> -        cc->chr_open(chr, backend, be_opened, errp);
> +        cc->chr_open(chr, backend, errp);
>      }
>  }
>
> @@ -1009,7 +1008,6 @@ static Chardev *chardev_new(const char *id, const
> char *typename,
>      Object *obj;
>      Chardev *chr = NULL;
>      Error *local_err = NULL;
> -    bool be_opened = true;
>
>      assert(g_str_has_prefix(typename, "chardev-"));
>      assert(id);
> @@ -1020,7 +1018,7 @@ static Chardev *chardev_new(const char *id, const
> char *typename,
>      chr->label = g_strdup(id);
>      chr->gcontext = gcontext;
>
> -    qemu_char_open(chr, backend, &be_opened, &local_err);
> +    qemu_char_open(chr, backend, &local_err);
>      if (local_err) {
>          error_propagate(errp, local_err);
>          object_unref(obj);
> @@ -1030,9 +1028,6 @@ static Chardev *chardev_new(const char *id, const
> char *typename,
>      if (!chr->filename) {
>          chr->filename = g_strdup(typename + 8);
>      }
> -    if (be_opened) {
> -        qemu_chr_be_event(chr, CHR_EVENT_OPENED);
> -    }
>
>      return chr;
>  }
> diff --git a/chardev/msmouse.c b/chardev/msmouse.c
> index d07cd998cb..9dc04e3b3e 100644
> --- a/chardev/msmouse.c
> +++ b/chardev/msmouse.c
> @@ -255,16 +255,16 @@ static void char_msmouse_finalize(Object *obj)
>
>  static void msmouse_chr_open(Chardev *chr,
>                               ChardevBackend *backend,
> -                             bool *be_opened,
>                               Error **errp)
>  {
>      MouseChardev *mouse = MOUSE_CHARDEV(chr);
>
> -    *be_opened = false;
>      mouse->hs = qemu_input_handler_register((DeviceState *)mouse,
>                                              &msmouse_handler);
>      mouse->tiocm = 0;
>      fifo8_create(&mouse->outbuf, MSMOUSE_BUF_SZ);
> +
> +    /* Never send CHR_EVENT_OPENED */
>  }
>
>  static void char_msmouse_class_init(ObjectClass *oc, const void *data)
> diff --git a/chardev/spice.c b/chardev/spice.c
> index 800784da26..612f358885 100644
> --- a/chardev/spice.c
> +++ b/chardev/spice.c
> @@ -251,9 +251,7 @@ static void chr_open(Chardev *chr, const char *subtype)
>      s->sin.subtype = g_strdup(subtype);
>  }
>
> -static void spice_vmc_chr_open(Chardev *chr,
> -                               ChardevBackend *backend,
> -                               bool *be_opened,
> +static void spice_vmc_chr_open(Chardev *chr, ChardevBackend *backend,
>                                 Error **errp)
>  {
>      ChardevSpiceChannel *spicevmc = backend->u.spicevmc.data;
> @@ -277,19 +275,17 @@ static void spice_vmc_chr_open(Chardev *chr,
>          return;
>      }
>
> -    *be_opened = false;
>  #if SPICE_SERVER_VERSION < 0x000e02
>      /* Spice < 0.14.2 doesn't explicitly open smartcard chardev */
>      if (strcmp(type, "smartcard") == 0) {
> -        *be_opened = true;
> +        chr_open(chr, type);
> +        qemu_chr_be_event(chr, CHR_EVENT_OPENED);
>      }
>  #endi


Can you add a preliminary patch to drop support for spice < 0.15 ?
According to repology:
debian_13: 0.15.2
fedora_42: 0.15.1
opensuse_leap_15_4: 0.15.0
ubuntu_22_04: 0.15.0




> f
>      chr_open(chr, type);
>  }
>
> -static void spice_port_chr_open(Chardev *chr,
> -                                ChardevBackend *backend,
> -                                bool *be_opened,
> +static void spice_port_chr_open(Chardev *chr, ChardevBackend *backend,
>                                  Error **errp)
>  {
>      ChardevSpicePort *spiceport = backend->u.spiceport.data;
> @@ -308,7 +304,6 @@ static void spice_port_chr_open(Chardev *chr,
>
>      chr_open(chr, "port");
>
> -    *be_opened = false;
>      s = SPICE_CHARDEV(chr);
>      s->sin.portname = g_strdup(name);
>
> diff --git a/chardev/wctablet.c b/chardev/wctablet.c
> index 8285a56e7b..65b2ceb58c 100644
> --- a/chardev/wctablet.c
> +++ b/chardev/wctablet.c
> @@ -326,13 +326,10 @@ static void wctablet_chr_finalize(Object *obj)
>
>  static void wctablet_chr_open(Chardev *chr,
>                                ChardevBackend *backend,
> -                              bool *be_opened,
>                                Error **errp)
>  {
>      TabletChardev *tablet = WCTABLET_CHARDEV(chr);
>
> -    *be_opened = true;
> -
>      /* init state machine */
>      memcpy(tablet->outbuf, WC_FULL_CONFIG_STRING,
> WC_FULL_CONFIG_STRING_LENGTH);
>      tablet->outlen = WC_FULL_CONFIG_STRING_LENGTH;
> @@ -340,6 +337,8 @@ static void wctablet_chr_open(Chardev *chr,
>
>      tablet->hs = qemu_input_handler_register((DeviceState *)tablet,
>                                               &wctablet_handler);
> +
> +    qemu_chr_be_event(chr, CHR_EVENT_OPENED);
>  }
>
>  static void wctablet_chr_class_init(ObjectClass *oc, const void *data)
> diff --git a/gdbstub/system.c b/gdbstub/system.c
> index 61b2b4b8da..49da1f73cc 100644
> --- a/gdbstub/system.c
> +++ b/gdbstub/system.c
> @@ -233,10 +233,9 @@ static int gdb_chr_write(Chardev *chr, const uint8_t
> *buf, int len)
>      return len;
>  }
>
> -static void gdb_chr_open(Chardev *chr, ChardevBackend *backend,
> -                             bool *be_opened, Error **errp)
> +static void gdb_chr_open(Chardev *chr, ChardevBackend *backend, Error
> **errp)
>  {
> -    *be_opened = false;
> +    /* Never send CHR_EVENT_OPENED */
>  }
>
>  static void char_gdb_class_init(ObjectClass *oc, const void *data)
> diff --git a/include/chardev/char.h b/include/chardev/char.h
> index 2baf2a8a1a..47c75c3582 100644
> --- a/include/chardev/char.h
> +++ b/include/chardev/char.h
> @@ -260,8 +260,7 @@ struct ChardevClass {
>      void (*chr_parse)(QemuOpts *opts, ChardevBackend *backend, Error
> **errp);
>
>      /* called after construction, open/starts the backend */
> -    void (*chr_open)(Chardev *chr, ChardevBackend *backend,
> -                 bool *be_opened, Error **errp);
> +    void (*chr_open)(Chardev *chr, ChardevBackend *backend, Error **errp);
>
>      /* write buf to the backend */
>      int (*chr_write)(Chardev *s, const uint8_t *buf, int len);
> diff --git a/ui/console-vc.c b/ui/console-vc.c
> index 931068d43a..4c8ea4c148 100644
> --- a/ui/console-vc.c
> +++ b/ui/console-vc.c
> @@ -1093,10 +1093,7 @@ void qemu_text_console_update_size(QemuTextConsole
> *c)
>      dpy_text_resize(QEMU_CONSOLE(c), c->width, c->height);
>  }
>
> -static void vc_chr_open(Chardev *chr,
> -                        ChardevBackend *backend,
> -                        bool *be_opened,
> -                        Error **errp)
> +static void vc_chr_open(Chardev *chr, ChardevBackend *backend, Error
> **errp)
>  {
>      ChardevVC *vc = backend->u.vc.data;
>      VCChardev *drv = VC_CHARDEV(chr);
> @@ -1144,7 +1141,7 @@ static void vc_chr_open(Chardev *chr,
>          drv->t_attrib = TEXT_ATTRIBUTES_DEFAULT;
>      }
>
> -    *be_opened = true;
> +    qemu_chr_be_event(chr, CHR_EVENT_OPENED);
>  }
>
>  static void vc_chr_parse(QemuOpts *opts, ChardevBackend *backend, Error
> **errp)
> diff --git a/ui/dbus-chardev.c b/ui/dbus-chardev.c
> index f6c426e220..3e471f84cd 100644
> --- a/ui/dbus-chardev.c
> +++ b/ui/dbus-chardev.c
> @@ -176,9 +176,7 @@ dbus_chr_send_break(
>      return DBUS_METHOD_INVOCATION_HANDLED;
>  }
>
> -static void
> -dbus_chr_open(Chardev *chr, ChardevBackend *backend,
> -              bool *be_opened, Error **errp)
> +static void dbus_chr_open(Chardev *chr, ChardevBackend *backend, Error
> **errp)
>  {
>      ERRP_GUARD();
>
> @@ -211,7 +209,7 @@ dbus_chr_open(Chardev *chr, ChardevBackend *backend,
>          return;
>      }
>      CHARDEV_CLASS(object_class_by_name(TYPE_CHARDEV_SOCKET))->chr_open(
> -        chr, be, be_opened, errp);
> +        chr, be, errp);
>  }
>
>  static void
> diff --git a/ui/gtk.c b/ui/gtk.c
> index b5498a7ce3..3eeb5baa11 100644
> --- a/ui/gtk.c
> +++ b/ui/gtk.c
> @@ -1963,10 +1963,7 @@ static void gd_vc_chr_set_echo(Chardev *chr, bool
> echo)
>
>  static int nb_vcs;
>  static Chardev *vcs[MAX_VCS];
> -static void gd_vc_chr_open(Chardev *chr,
> -                       ChardevBackend *backend,
> -                       bool *be_opened,
> -                       Error **errp)
> +static void gd_vc_chr_open(Chardev *chr, ChardevBackend *backend, Error
> **errp)
>  {
>      if (nb_vcs == MAX_VCS) {
>          error_setg(errp, "Maximum number of consoles reached");
> @@ -1975,10 +1972,10 @@ static void gd_vc_chr_open(Chardev *chr,
>
>      vcs[nb_vcs++] = chr;
>
> -    /* console/chardev init sometimes completes elsewhere in a 2nd
> +    /*
> +     * console/chardev init sometimes completes elsewhere in a 2nd
>       * stage, so defer OPENED events until they are fully initialized
>       */
> -    *be_opened = false;
>  }
>
>  static void char_gd_vc_class_init(ObjectClass *oc, const void *data)
> diff --git a/ui/spice-app.c b/ui/spice-app.c
> index ea0b62a22b..7ac9ae4e78 100644
> --- a/ui/spice-app.c
> +++ b/ui/spice-app.c
> @@ -49,8 +49,7 @@ struct VCChardev {
>
>  struct VCChardevClass {
>      ChardevClass parent;
> -    void (*parent_open)(Chardev *chr, ChardevBackend *backend,
> -                        bool *be_opened, Error **errp);
> +    void (*parent_open)(Chardev *chr, ChardevBackend *backend, Error
> **errp);
>  };
>
>  #define TYPE_CHARDEV_VC "chardev-vc"
> @@ -67,10 +66,7 @@ chr_spice_backend_new(void)
>      return be;
>  }
>
> -static void vc_chr_open(Chardev *chr,
> -                        ChardevBackend *backend,
> -                        bool *be_opened,
> -                        Error **errp)
> +static void vc_chr_open(Chardev *chr, ChardevBackend *backend, Error
> **errp)
>  {
>      VCChardevClass *vc = CHARDEV_VC_GET_CLASS(chr);
>      ChardevBackend *be;
> @@ -87,7 +83,7 @@ static void vc_chr_open(Chardev *chr,
>      be = chr_spice_backend_new();
>      be->u.spiceport.data->fqdn = fqdn ?
>          g_strdup(fqdn) : g_strdup_printf("org.qemu.console.%s",
> chr->label);
> -    vc->parent_open(chr, be, be_opened, errp);
> +    vc->parent_open(chr, be, errp);
>      qapi_free_ChardevBackend(be);
>  }
>
> diff --git a/ui/vdagent.c b/ui/vdagent.c
> index 9972a9c476..3becc6c076 100644
> --- a/ui/vdagent.c
> +++ b/ui/vdagent.c
> @@ -662,7 +662,6 @@ static void vdagent_chr_recv_clipboard(VDAgentChardev
> *vd, VDAgentMessage *msg)
>
>  static void vdagent_chr_open(Chardev *chr,
>                               ChardevBackend *backend,
> -                             bool *be_opened,
>                               Error **errp)
>  {
>      VDAgentChardev *vd = QEMU_VDAGENT_CHARDEV(chr);
> @@ -692,7 +691,7 @@ static void vdagent_chr_open(Chardev *chr,
>
> &vdagent_mouse_handler);
>      }
>
> -    *be_opened = true;
> +    qemu_chr_be_event(chr, CHR_EVENT_OPENED);
>  }
>
>  static void vdagent_clipboard_peer_register(VDAgentChardev *vd)
> --
> 2.48.1
>
>

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