[Spice-devel] [PATCH 2/3] char-device: add 'self' param to vfuncs

Pavel Grunt pgrunt at redhat.com
Thu Nov 3 09:21:59 UTC 2016


Hi, it looks good to me, just an extra line addition in
red_vmc_channel_class_init

Ack

Pavel

On Wed, 2016-11-02 at 16:25 -0500, Jonathon Jongsma wrote:
> Add a 'self' parameter to all of the char device virtual functions
> so
> that we don't have to play games with the 'opaque' pointer.
> ---
>  server/char-device.c              | 31 ++-----------
>  server/char-device.h              | 20 ++++----
>  server/reds.c                     | 23 ++++++----
>  server/smartcard-channel-client.c |  2 +-
>  server/smartcard.c                | 32 ++++++-------
>  server/spicevmc.c                 | 96
> ++++++++++++++++++++++++++++++++-------
>  6 files changed, 124 insertions(+), 80 deletions(-)
> 
> diff --git a/server/char-device.c b/server/char-device.c
> index 318bf3c..3b70066 100644
> --- a/server/char-device.c
> +++ b/server/char-device.c
> @@ -66,7 +66,6 @@ struct RedCharDevicePrivate {
>      int during_read_from_device;
>      int during_write_to_device;
>  
> -    void *opaque;
>      SpiceServer *reds;
>  };
>  
> @@ -88,7 +87,6 @@ enum {
>      PROP_SPICE_SERVER,
>      PROP_CLIENT_TOKENS_INTERVAL,
>      PROP_SELF_TOKENS,
> -    PROP_OPAQUE
>  };
>  
>  static void
> red_char_device_write_buffer_unref(RedCharDeviceWriteBuffer
> *write_buf);
> @@ -99,7 +97,7 @@
> red_char_device_read_one_msg_from_device(RedCharDevice *dev)
>  {
>     RedCharDeviceClass *klass = RED_CHAR_DEVICE_GET_CLASS(dev);
>  
> -   return klass->read_one_msg_from_device(dev->priv->sin, dev-
> >priv->opaque);
> +   return klass->read_one_msg_from_device(dev, dev->priv->sin);
>  }
>  
>  static void
> @@ -109,7 +107,7 @@ red_char_device_send_msg_to_client(RedCharDevice
> *dev,
>  {
>     RedCharDeviceClass *klass = RED_CHAR_DEVICE_GET_CLASS(dev);
>  
> -   klass->send_msg_to_client(msg, client, dev->priv->opaque);
> +   klass->send_msg_to_client(dev, msg, client);
>  }
>  
>  static void
> @@ -119,7 +117,7 @@
> red_char_device_send_tokens_to_client(RedCharDevice *dev,
>  {
>     RedCharDeviceClass *klass = RED_CHAR_DEVICE_GET_CLASS(dev);
>  
> -   klass->send_tokens_to_client(client, tokens, dev->priv->opaque);
> +   klass->send_tokens_to_client(dev, client, tokens);
>  }
>  
>  static void
> @@ -128,7 +126,7 @@ red_char_device_on_free_self_token(RedCharDevice
> *dev)
>     RedCharDeviceClass *klass = RED_CHAR_DEVICE_GET_CLASS(dev);
>  
>     if (klass->on_free_self_token != NULL) {
> -       klass->on_free_self_token(dev->priv->opaque);
> +       klass->on_free_self_token(dev);
>     }
>  }
>  
> @@ -137,7 +135,7 @@ red_char_device_remove_client(RedCharDevice
> *dev, RedClient *client)
>  {
>     RedCharDeviceClass *klass = RED_CHAR_DEVICE_GET_CLASS(dev);
>  
> -   klass->remove_client(client, dev->priv->opaque);
> +   klass->remove_client(dev, client);
>  }
>  
>  static void
> red_char_device_write_buffer_free(RedCharDeviceWriteBuffer *buf)
> @@ -686,11 +684,6 @@ void
> red_char_device_reset_dev_instance(RedCharDevice *dev,
>      g_object_notify(G_OBJECT(dev), "sin");
>  }
>  
> -void *red_char_device_opaque_get(RedCharDevice *dev)
> -{
> -    return dev->priv->opaque;
> -}
> -
>  void red_char_device_destroy(RedCharDevice *char_dev)
>  {
>      g_return_if_fail(RED_IS_CHAR_DEVICE(char_dev));
> @@ -1041,9 +1034,6 @@
> red_char_device_get_property(GObject    *object,
>          case PROP_SELF_TOKENS:
>              g_value_set_uint64(value, self->priv->num_self_tokens);
>              break;
> -        case PROP_OPAQUE:
> -            g_value_set_pointer(value, self->priv->opaque);
> -            break;
>          default:
>              G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id,
> pspec);
>      }
> @@ -1071,9 +1061,6 @@
> red_char_device_set_property(GObject      *object,
>          case PROP_SELF_TOKENS:
>              self->priv->num_self_tokens =
> g_value_get_uint64(value);
>              break;
> -        case PROP_OPAQUE:
> -            self->priv->opaque = g_value_get_pointer(value);
> -            break;
>          default:
>              G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id,
> pspec);
>      }
> @@ -1156,14 +1143,6 @@ red_char_device_class_init(RedCharDeviceClass
> *klass)
>                                                          0,
> G_MAXUINT64, 0,
>                                                          G_PARAM_STA
> TIC_STRINGS |
>                                                          G_PARAM_REA
> DWRITE));
> -    g_object_class_install_property(object_class,
> -                                    PROP_OPAQUE,
> -                                    g_param_spec_pointer("opaque",
> -                                                         "opaque",
> -                                                         "User data
> to pass to callbacks",
> -                                                      G_PARAM_STATI
> C_STRINGS |
> -                                                      G_PARAM_READW
> RITE));
> -
>  }
>  
>  static void
> diff --git a/server/char-device.h b/server/char-device.h
> index 44e9504..3b87023 100644
> --- a/server/char-device.h
> +++ b/server/char-device.h
> @@ -56,25 +56,27 @@ struct RedCharDeviceClass
>  
>      /* reads from the device till reaching a msg that should be
> sent to the client,
>       * or till the reading fails */
> -    RedPipeItem*
> (*read_one_msg_from_device)(SpiceCharDeviceInstance *sin,
> -                                             void *opaque);
> +    RedPipeItem* (*read_one_msg_from_device)(RedCharDevice *self,
> +                                             SpiceCharDeviceInstanc
> e *sin);
>      /* after this call, the message is unreferenced */
> -    void (*send_msg_to_client)(RedPipeItem *msg,
> -                               RedClient *client,
> -                               void *opaque);
> +    void (*send_msg_to_client)(RedCharDevice *self,
> +                               RedPipeItem *msg,
> +                               RedClient *client);
>  
>      /* The cb is called when a predefined number of write buffers
> were consumed by the
>       * device */
> -    void (*send_tokens_to_client)(RedClient *client, uint32_t
> tokens, void *opaque);
> +    void (*send_tokens_to_client)(RedCharDevice *self,
> +                                  RedClient *client,
> +                                  uint32_t tokens);
>  
>      /* The cb is called when a server (self) message that was
> addressed to the device,
>       * has been completely written to it */
> -    void (*on_free_self_token)(void *opaque);
> +    void (*on_free_self_token)(RedCharDevice *self);
>  
>      /* This cb is called if it is recommended to remove the client
>       * due to slow flow or due to some other error.
>       * The called instance should disconnect the client, or at
> least the corresponding channel */
> -    void (*remove_client)(RedClient *client, void *opaque);
> +    void (*remove_client)(RedCharDevice *self, RedClient *client);
>  };
>  
>  GType red_char_device_get_type(void) G_GNUC_CONST;
> @@ -159,8 +161,6 @@ void
> red_char_device_reset_dev_instance(RedCharDevice *dev,
>                                          SpiceCharDeviceInstance
> *sin);
>  void red_char_device_destroy(RedCharDevice *dev);
>  
> -void *red_char_device_opaque_get(RedCharDevice *dev);
> -
>  /* only one client is supported */
>  void red_char_device_migrate_data_marshall(RedCharDevice *dev,
>                                             SpiceMarshaller *m);
> diff --git a/server/reds.c b/server/reds.c
> index 30b9165..73e9c53 100644
> --- a/server/reds.c
> +++ b/server/reds.c
> @@ -817,11 +817,11 @@ static void vdi_port_read_buf_free(RedPipeItem
> *base)
>  
>  /* reads from the device till completes reading a message that is
> addressed to the client,
>   * or otherwise, when reading from the device fails */
> -static RedPipeItem
> *vdi_port_read_one_msg_from_device(SpiceCharDeviceInstance *sin,
> -                                                      void *opaque)
> +static RedPipeItem *vdi_port_read_one_msg_from_device(RedCharDevice
> *self,
> +                                                      SpiceCharDevi
> ceInstance *sin)
>  {
>      RedsState *reds;
> -    RedCharDeviceVDIPort *dev = RED_CHAR_DEVICE_VDIPORT(sin->st);
> +    RedCharDeviceVDIPort *dev = RED_CHAR_DEVICE_VDIPORT(self);
>      SpiceCharDeviceInterface *sif;
>      RedVDIReadBuf *dispatch_buf;
>      int n;
> @@ -894,9 +894,9 @@ static RedPipeItem
> *vdi_port_read_one_msg_from_device(SpiceCharDeviceInstance *s
>  }
>  
>  /* after calling this, we unref the message, and the ref is in the
> instance side */
> -static void vdi_port_send_msg_to_client(RedPipeItem *msg,
> -                                        RedClient *client,
> -                                        void *opaque)
> +static void vdi_port_send_msg_to_client(RedCharDevice *self,
> +                                        RedPipeItem *msg,
> +                                        RedClient *client)
>  {
>      RedVDIReadBuf *agent_data_buf = (RedVDIReadBuf *)msg;
>  
> @@ -908,15 +908,17 @@ static void
> vdi_port_send_msg_to_client(RedPipeItem *msg,
>                                          agent_data_buf);
>  }
>  
> -static void vdi_port_send_tokens_to_client(RedClient *client,
> uint32_t tokens, void *opaque)
> +static void vdi_port_send_tokens_to_client(RedCharDevice *self,
> +                                           RedClient *client,
> +                                           uint32_t tokens)
>  {
>      main_channel_client_push_agent_tokens(red_client_get_main(clien
> t),
>                                            tokens);
>  }
>  
> -static void vdi_port_on_free_self_token(void *opaque)
> +static void vdi_port_on_free_self_token(RedCharDevice *self)
>  {
> -    RedsState *reds = opaque;
> +    RedsState *reds = red_char_device_get_server(self);
>  
>      if (reds->inputs_channel && reds->pending_mouse_event) {
>          spice_debug("pending mouse event");
> @@ -924,7 +926,8 @@ static void vdi_port_on_free_self_token(void
> *opaque)
>      }
>  }
>  
> -static void vdi_port_remove_client(RedClient *client, void *opaque)
> +static void vdi_port_remove_client(RedCharDevice *self,
> +                                   RedClient *client)
>  {
>      red_channel_client_shutdown(RED_CHANNEL_CLIENT(red_client_get_m
> ain(client)));
>  }
> diff --git a/server/smartcard-channel-client.c b/server/smartcard-
> channel-client.c
> index 30b2249..d00a6b2 100644
> --- a/server/smartcard-channel-client.c
> +++ b/server/smartcard-channel-client.c
> @@ -273,7 +273,7 @@ static void
> smartcard_channel_client_remove_reader(SmartCardChannelClient *scc,
>          return;
>      }
>  
> -    dev = red_char_device_opaque_get(char_device->st);
> +    dev = RED_CHAR_DEVICE_SMARTCARD(char_device->st);
>      spice_assert(scc->priv->smartcard == dev);
>      if (!smartcard_char_device_notify_reader_remove(dev)) {
>          smartcard_channel_client_push_error(RED_CHANNEL_CLIENT(scc)
> ,
> diff --git a/server/smartcard.c b/server/smartcard.c
> index 53919c0..5b18abe 100644
> --- a/server/smartcard.c
> +++ b/server/smartcard.c
> @@ -149,10 +149,10 @@ static void
> smartcard_read_buf_prepare(RedCharDeviceSmartcard *dev, VSCMsgHeader
>      }
>  }
>  
> -static RedPipeItem
> *smartcard_read_msg_from_device(SpiceCharDeviceInstance *sin,
> -                                                   void *opaque)
> +static RedPipeItem *smartcard_read_msg_from_device(RedCharDevice
> *self,
> +                                                   SpiceCharDeviceI
> nstance *sin)
>  {
> -    RedCharDeviceSmartcard *dev = opaque;
> +    RedCharDeviceSmartcard *dev = RED_CHAR_DEVICE_SMARTCARD(self);
>      SpiceCharDeviceInterface *sif =
> spice_char_device_get_interface(sin);
>      VSCMsgHeader *vheader = (VSCMsgHeader*)dev->priv->buf;
>      int n;
> @@ -186,11 +186,11 @@ static RedPipeItem
> *smartcard_read_msg_from_device(SpiceCharDeviceInstance *sin,
>      return NULL;
>  }
>  
> -static void smartcard_send_msg_to_client(RedPipeItem *msg,
> -                                         RedClient *client,
> -                                         void *opaque)
> +static void smartcard_send_msg_to_client(RedCharDevice *self,
> +                                         RedPipeItem *msg,
> +                                         RedClient *client)
>  {
> -    RedCharDeviceSmartcard *dev = opaque;
> +    RedCharDeviceSmartcard *dev = RED_CHAR_DEVICE_SMARTCARD(self);
>      RedChannelClient *rcc = RED_CHANNEL_CLIENT(dev->priv->scc);
>  
>      spice_assert(dev->priv->scc &&
> @@ -199,14 +199,16 @@ static void
> smartcard_send_msg_to_client(RedPipeItem *msg,
>      smartcard_channel_client_pipe_add_push(rcc, msg);
>  }
>  
> -static void smartcard_send_tokens_to_client(RedClient *client,
> uint32_t tokens, void *opaque)
> +static void smartcard_send_tokens_to_client(RedCharDevice *self,
> +                                            RedClient *client,
> +                                            uint32_t tokens)
>  {
>      spice_error("not implemented");
>  }
>  
> -static void smartcard_remove_client(RedClient *client, void
> *opaque)
> +static void smartcard_remove_client(RedCharDevice *self, RedClient
> *client)
>  {
> -    RedCharDeviceSmartcard *dev = opaque;
> +    RedCharDeviceSmartcard *dev = RED_CHAR_DEVICE_SMARTCARD(self);
>      RedChannelClient *rcc = RED_CHANNEL_CLIENT(dev->priv->scc);
>  
>      spice_printerr("smartcard  dev %p, client %p", dev, client);
> @@ -247,7 +249,7 @@ RedMsgItem
> *smartcard_char_device_on_message_from_device(RedCharDeviceSmartcard
>  
>  static int smartcard_char_device_add_to_readers(RedsState *reds,
> SpiceCharDeviceInstance *char_device)
>  {
> -    RedCharDeviceSmartcard *dev =
> red_char_device_opaque_get(char_device->st);
> +    RedCharDeviceSmartcard *dev =
> RED_CHAR_DEVICE_SMARTCARD(char_device->st);
>  
>      if (g_smartcard_readers.num >= SMARTCARD_MAX_READERS) {
>          return -1;
> @@ -272,7 +274,7 @@ SpiceCharDeviceInstance
> *smartcard_readers_get_unattached(void)
>      RedCharDeviceSmartcard* dev;
>  
>      for (i = 0; i < g_smartcard_readers.num; ++i) {
> -        dev =
> red_char_device_opaque_get(g_smartcard_readers.sin[i]->st);
> +        dev = RED_CHAR_DEVICE_SMARTCARD(g_smartcard_readers.sin[i]-
> >st);
>          if (!dev->priv->scc) {
>              return g_smartcard_readers.sin[i];
>          }
> @@ -291,8 +293,6 @@ static RedCharDeviceSmartcard
> *smartcard_device_new(RedsState *reds, SpiceCharDe
>                              "self-tokens", ~0ULL,
>                              NULL);
>  
> -    g_object_set(char_dev, "opaque", char_dev, NULL);
> -
>      return RED_CHAR_DEVICE_SMARTCARD(char_dev);
>  }
>  
> @@ -336,7 +336,7 @@ void
> smartcard_char_device_notify_reader_add(RedCharDeviceSmartcard *dev)
>  void smartcard_char_device_attach_client(SpiceCharDeviceInstance
> *char_device,
>                                           SmartCardChannelClient
> *scc)
>  {
> -    RedCharDeviceSmartcard *dev =
> red_char_device_opaque_get(char_device->st);
> +    RedCharDeviceSmartcard *dev =
> RED_CHAR_DEVICE_SMARTCARD(char_device->st);
>      int client_added;
>  
>      spice_assert(!smartcard_channel_client_get_char_device(scc) &&
> !dev->priv->scc);
> @@ -499,7 +499,7 @@ void
> smartcard_channel_write_to_reader(RedCharDeviceWriteBuffer
> *write_buf)
>  
>      spice_assert(vheader->reader_id <= g_smartcard_readers.num);
>      sin = g_smartcard_readers.sin[vheader->reader_id];
> -    dev = (RedCharDeviceSmartcard *)red_char_device_opaque_get(sin-
> >st);
> +    dev = RED_CHAR_DEVICE_SMARTCARD(sin->st);
>      spice_assert(!dev->priv->scc ||
>                   dev == smartcard_channel_client_get_device(dev-
> >priv->scc));
>      /* protocol requires messages to be in network endianess */
> diff --git a/server/spicevmc.c b/server/spicevmc.c
> index 8e23248..747afa3 100644
> --- a/server/spicevmc.c
> +++ b/server/spicevmc.c
> @@ -86,10 +86,13 @@ struct RedCharDeviceSpiceVmcClass
>      RedCharDeviceClass parent_class;
>  };
>  
> +typedef struct RedVmcChannel RedVmcChannel;
> +typedef struct RedVmcChannelClass RedVmcChannelClass;
> +
>  static GType red_char_device_spicevmc_get_type(void) G_GNUC_CONST;
>  static RedCharDevice
> *red_char_device_spicevmc_new(SpiceCharDeviceInstance *sin,
>                                                     RedsState *reds,
> -                                                   void *opaque);
> +                                                   RedVmcChannel
> *vmc_channel);
>  
>  G_DEFINE_TYPE(RedCharDeviceSpiceVmc, red_char_device_spicevmc,
> RED_TYPE_CHAR_DEVICE)
>  
> @@ -349,10 +352,11 @@ static RedVmcPipeItem*
> try_compress_lz4(RedVmcChannel *state, int n, RedVmcPipeI
>  }
>  #endif
>  
> -static RedPipeItem
> *spicevmc_chardev_read_msg_from_dev(SpiceCharDeviceInstance *sin,
> -                                                       void
> *opaque)
> +static RedPipeItem
> *spicevmc_chardev_read_msg_from_dev(RedCharDevice *self,
> +                                                       SpiceCharDev
> iceInstance *sin)
>  {
> -    RedVmcChannel *state = opaque;
> +    RedCharDeviceSpiceVmc *vmc = RED_CHAR_DEVICE_SPICEVMC(self);
> +    RedVmcChannel *state = RED_VMC_CHANNEL(vmc->channel);
>      SpiceCharDeviceInterface *sif;
>      RedVmcPipeItem *msg_item;
>      int n;
> @@ -394,11 +398,12 @@ static RedPipeItem
> *spicevmc_chardev_read_msg_from_dev(SpiceCharDeviceInstance *
>      }
>  }
>  
> -static void spicevmc_chardev_send_msg_to_client(RedPipeItem *msg,
> -                                                RedClient *client,
> -                                                void *opaque)
> +static void spicevmc_chardev_send_msg_to_client(RedCharDevice
> *self,
> +                                                RedPipeItem *msg,
> +                                                RedClient *client)
>  {
> -    RedVmcChannel *state = opaque;
> +    RedCharDeviceSpiceVmc *vmc = RED_CHAR_DEVICE_SPICEVMC(self);
> +    RedVmcChannel *state = RED_VMC_CHANNEL(vmc->channel);
>  
>      spice_assert(red_channel_client_get_client(state->rcc) ==
> client);
>      red_pipe_item_ref(msg);
> @@ -432,16 +437,18 @@ static void
> spicevmc_port_send_event(RedChannelClient *rcc, uint8_t event)
>      red_channel_client_pipe_add_push(rcc, &item->base);
>  }
>  
> -static void spicevmc_char_dev_send_tokens_to_client(RedClient
> *client,
> -                                                    uint32_t
> tokens,
> -                                                    void *opaque)
> +static void spicevmc_char_dev_send_tokens_to_client(RedCharDevice
> *self,
> +                                                    RedClient
> *client,
> +                                                    uint32_t
> tokens)
>  {
>      spice_printerr("Not implemented!");
>  }
>  
> -static void spicevmc_char_dev_remove_client(RedClient *client, void
> *opaque)
> +static void spicevmc_char_dev_remove_client(RedCharDevice *self,
> +                                            RedClient *client)
>  {
> -    RedVmcChannel *state = opaque;
> +    RedCharDeviceSpiceVmc *vmc = RED_CHAR_DEVICE_SPICEVMC(self);
> +    RedVmcChannel *state = RED_VMC_CHANNEL(vmc->channel);
>  
>      spice_printerr("vmc state %p, client %p", state, client);
>      spice_assert(state->rcc &&
> @@ -767,6 +774,7 @@ red_vmc_channel_class_init(RedVmcChannelClass
> *klass)
>      channel_class->handle_migrate_flush_mark =
> spicevmc_channel_client_handle_migrate_flush_mark;
>      channel_class->handle_migrate_data =
> spicevmc_channel_client_handle_migrate_data;
>  
> +

extra line
>      g_object_class_install_property(object_class,
>                                      PROP_DEVICE_INSTANCE,
>                                      g_param_spec_pointer("device-
> instance",
> @@ -885,14 +893,15 @@ void spicevmc_device_disconnect(RedsState
> *reds, SpiceCharDeviceInstance *sin)
>  SPICE_GNUC_VISIBLE void
> spice_server_port_event(SpiceCharDeviceInstance *sin, uint8_t event)
>  {
>      RedVmcChannel *state;
> +    RedCharDeviceSpiceVmc *device = RED_CHAR_DEVICE_SPICEVMC(sin-
> >st);
>  
>      if (sin->st == NULL) {
>          spice_warning("no SpiceCharDeviceState attached to instance
> %p", sin);
>          return;
>      }
>  
> -    /* FIXME */
> -    state = (RedVmcChannel
> *)red_char_device_opaque_get((RedCharDevice*)sin->st);
> +    state = RED_VMC_CHANNEL(device->channel);
> +
>      if (event == SPICE_PORT_EVENT_OPENED) {
>          state->port_opened = TRUE;
>      } else if (event == SPICE_PORT_EVENT_CLOSED) {
> @@ -914,6 +923,48 @@ red_char_device_spicevmc_dispose(GObject
> *object)
>      g_clear_object(&self->channel);
>  }
>  
> +enum {
> +    PROP_CHAR_DEVICE_0,
> +    PROP_CHAR_DEVICE_CHANNEL,
> +};
> +
> +static void
> +red_char_device_spicevmc_get_property(GObject *object,
> +                                      guint property_id,
> +                                      GValue *value,
> +                                      GParamSpec *pspec)
> +{
> +    RedCharDeviceSpiceVmc *self = RED_CHAR_DEVICE_SPICEVMC(object);
> +
> +    switch (property_id)
> +    {
> +        case PROP_CHAR_DEVICE_CHANNEL:
> +            g_value_set_object(value, self->channel);
> +            break;
> +        default:
> +            G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id,
> pspec);
> +    }
> +}
> +
> +static void
> +red_char_device_spicevmc_set_property(GObject *object,
> +                                      guint property_id,
> +                                      const GValue *value,
> +                                      GParamSpec *pspec)
> +{
> +    RedCharDeviceSpiceVmc *self = RED_CHAR_DEVICE_SPICEVMC(object);
> +
> +    switch (property_id)
> +    {
> +        case PROP_CHAR_DEVICE_CHANNEL:
> +            g_clear_object(&self->channel);
> +            self->channel = g_value_dup_object(value);
> +            break;
> +        default:
> +            G_OBJECT_WARN_INVALID_PROPERTY_ID(object, property_id,
> pspec);
> +    }
> +}
> +
>  static void
>  red_char_device_spicevmc_class_init(RedCharDeviceSpiceVmcClass
> *klass)
>  {
> @@ -921,11 +972,22 @@
> red_char_device_spicevmc_class_init(RedCharDeviceSpiceVmcClass
> *klass)
>      RedCharDeviceClass *char_dev_class =
> RED_CHAR_DEVICE_CLASS(klass);
>  
>      object_class->dispose = red_char_device_spicevmc_dispose;
> +    object_class->get_property =
> red_char_device_spicevmc_get_property;
> +    object_class->set_property =
> red_char_device_spicevmc_set_property;
>  
>      char_dev_class->read_one_msg_from_device =
> spicevmc_chardev_read_msg_from_dev;
>      char_dev_class->send_msg_to_client =
> spicevmc_chardev_send_msg_to_client;
>      char_dev_class->send_tokens_to_client =
> spicevmc_char_dev_send_tokens_to_client;
>      char_dev_class->remove_client =
> spicevmc_char_dev_remove_client;
> +
> +    g_object_class_install_property(object_class,
> +                                    PROP_CHAR_DEVICE_CHANNEL,
> +                                    g_param_spec_pointer("channel",
> +                                                         "channel",
> +                                                         "Channel
> associated with the char device",
> +                                                         G_PARAM_RE
> ADWRITE |
> +                                                         G_PARAM_CO
> NSTRUCT_ONLY |
> +                                                         G_PARAM_ST
> ATIC_STRINGS));
>  }
>  
>  static void
> @@ -936,13 +998,13 @@
> red_char_device_spicevmc_init(RedCharDeviceSpiceVmc *self)
>  static RedCharDevice *
>  red_char_device_spicevmc_new(SpiceCharDeviceInstance *sin,
>                               RedsState *reds,
> -                             void *opaque)
> +                             RedVmcChannel *vmc_channel)
>  {
>      return g_object_new(RED_TYPE_CHAR_DEVICE_SPICEVMC,
>                          "sin", sin,
>                          "spice-server", reds,
>                          "client-tokens-interval", 0ULL,
>                          "self-tokens", ~0ULL,
> -                        "opaque", opaque,
> +                        "channel", vmc_channel,
>                          NULL);
>  }


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