回复: Re: [PATCH] vdagentd: fix monitors config size on agent reconnect

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done

https://gitlab.freedesktop.org/spice/linux/vd_agent/-/merge_requests/59

Thank you for your review

YuJun

主   题：Re: [PATCH] vdagentd: fix monitors config size on agent reconnect
日   期：2026年06月30日14:46
发件人：Marc-André Lureau
收件人：spice-devel,Marc-André Lureau
抄送人：Frediano Ziglio,Lukas Joeressen

Hi On Tue, Jun 30, 2026 at 10:24 AM yujun <yu...@kylinos.cn> wrote: > > When a SPICE client sends a VDAgentMonitorsConfig message with > VD_AGENT_CONFIG_MONITORS_FLAG_PHYSICAL_SIZE set, vdagentd stores the > full payload including the VDAgentMonitorMM entries. On agent reconnect, > update_active_session_connection() forwards the cached configuration > with a size that omits the physical size entries. > > Extract a monitors_config_size() helper and use it both when validating > incoming client monitor configuration and when forwarding the cached > configuration to a reconnecting agent. > > Fixes: 3660acf (Fix VDAGentMonitorConfig size calculation) > Signed-off-by: yujun <yu...@kylinos.cn> lgtm Reviewed-by: Marc-André Lureau <marcandre.lur...@redhat.com> can you open a MR on gitlab: https://gitlab.freedesktop.org/spice/linux/vd_agent/-/merge_requests > --- > src/vdagentd/vdagentd.c | 20 +++++++++++++------- > 1 file changed, 13 insertions(+), 7 deletions(-) > > diff --git a/src/vdagentd/vdagentd.c b/src/vdagentd/vdagentd.c > index 27a6f15..5214df7 100644 > --- a/src/vdagentd/vdagentd.c > +++ b/src/vdagentd/vdagentd.c > @@ -136,6 +136,17 @@ static void virtio_msg_uint16_from_le(uint8_t *_msg, uint32_t size, uint32_t off > msg[i] = GUINT16_FROM_LE(msg[i]); > } > > +static uint32_t monitors_config_size(const VDAgentMonitorsConfig *config) > +{ > + uint32_t size = sizeof(VDAgentMonitorsConfig) + > + config->num_of_monitors * sizeof(VDAgentMonConfig); > + > + if (config->flags & VD_AGENT_CONFIG_MONITORS_FLAG_PHYSICAL_SIZE) { > + size += config->num_of_monitors * sizeof(VDAgentMonitorMM); > + } > + return size; > +} > + > /* vdagentd <-> spice-client communication handling */ > static void send_capabilities(VirtioPort *vport, > uint32_t request) > @@ -206,11 +217,7 @@ static void do_client_monitors(VirtioPort *vport, int port_nr, > uint32_t size; > > /* Store monitor config to send to agents when they connect */ > - size = sizeof(VDAgentMonitorsConfig) + > - new_monitors->num_of_monitors * sizeof(VDAgentMonConfig); > - if (new_monitors->flags & VD_AGENT_CONFIG_MONITORS_FLAG_PHYSICAL_SIZE) { > - size += new_monitors->num_of_monitors * sizeof(VDAgentMonitorMM); > - } > + size = monitors_config_size(new_monitors); > if (message_header->size != size) { > syslog(LOG_ERR, "invalid message size for VDAgentMonitorsConfig"); > return; > @@ -943,8 +950,7 @@ static void update_active_session_connection(UdscsConnection *new_conn) > > if (active_session_conn && mon_config) > udscs_write(active_session_conn, VDAGENTD_MONITORS_CONFIG, 0, 0, > - (uint8_t *)mon_config, sizeof(VDAgentMonitorsConfig) + > - mon_config->num_of_monitors * sizeof(VDAgentMonConfig)); > + (uint8_t *)mon_config, monitors_config_size(mon_config)); > > release_clipboards(); > > -- > 2.25.1 > </marcandre.lur...@redhat.com></yu...@kylinos.cn></yu...@kylinos.cn>

 

 

 

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