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2022-01-13ui/dbus: fix buffer-overflow detected by ASANMarc-André Lureau1-0/+1
On the last added dbus patch, I left a tiny BO: ==441487==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x611000025a70 at pc 0x7f0817bb764c bp 0x7ffde672ae60 sp 0x7ffde672ae58 WRITE of size 8 at 0x611000025a70 thread T0 #0 0x7f0817bb764b in dbus_vc_class_init ../ui/dbus.c:401 A cookie for ASAN! not you C :) Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Fixes: 7f767ca35e5 ("ui/dbus: register D-Bus VC handler") Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20211222144032.443424-1-marcandre.lureau@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2021-12-21ui/dbus: register D-Bus VC handlerMarc-André Lureau1-0/+53
Export the default consoles over the D-Bus chardev. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2021-12-21ui/dbus: add chardev backend & interfaceMarc-André Lureau1-0/+26
Add a new chardev backend which allows D-Bus client to handle the chardev stream & events. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2021-12-21ui/dbus: add clipboard interfaceMarc-André Lureau1-0/+7
Expose the clipboard API over D-Bus. See the interface documentation for further details. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2021-12-21audio: add "dbus" audio backendMarc-André Lureau1-0/+35
Add a new -audio backend that accepts D-Bus clients/listeners to handle playback & recording, to be exported via the -display dbus. Example usage: -audiodev dbus,in.mixing-engine=off,out.mixing-engine=off,id=dbus -display dbus,audiodev=dbus Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2021-12-21ui/dbus: add p2p=on/off optionMarc-André Lureau1-5/+104
Add an option to use direct connections instead of via the bus. Clients are accepted with QMP add_client. This allows to provide the D-Bus display without a bus. It also simplifies the testing setup (some CI have issues to setup a D-Bus bus in a container). Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Acked-by: Gerd Hoffmann <kraxel@redhat.com>
2021-12-21ui: add a D-Bus display backendMarc-André Lureau1-0/+262
The "dbus" display backend exports the QEMU consoles and other UI-related interfaces over D-Bus. By default, the connection is established on the session bus, but you can specify a different bus with the "addr" option. The backend takes the "org.qemu" service name, while still allowing further instances to queue on the same name (so you can lookup all the available instances too). It accepts any number of clients at this point, although this is expected to evolve with options to restrict clients, or only accept p2p via fd passing. The interface is intentionally very close to the internal QEMU API, and can be introspected or interacted with busctl/dfeet etc: $ ./qemu-system-x86_64 -name MyVM -display dbus $ busctl --user introspect org.qemu /org/qemu/Display1/Console_0 org.qemu.Display1.Console interface - - - .RegisterListener method h - - .SetUIInfo method qqiiuu - - .DeviceAddress property s "pci/0000/01.0" emits-change .Head property u 0 emits-change .Height property u 480 emits-change .Label property s "VGA" emits-change .Type property s "Graphic" emits-change .Width property u 640 emits-change [...] See the interfaces XML source file and Sphinx docs for the generated API documentations. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Acked-by: Gerd Hoffmann <kraxel@redhat.com>