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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>
49 lines
1.8 KiB
C
49 lines
1.8 KiB
C
/*
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* QEMU DBus display errors
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*
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* Copyright (c) 2021 Marc-André Lureau <marcandre.lureau@redhat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "dbus.h"
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static const GDBusErrorEntry dbus_display_error_entries[] = {
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{ DBUS_DISPLAY_ERROR_FAILED, "org.qemu.Display1.Error.Failed" },
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{ DBUS_DISPLAY_ERROR_INVALID, "org.qemu.Display1.Error.Invalid" },
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{ DBUS_DISPLAY_ERROR_UNSUPPORTED, "org.qemu.Display1.Error.Unsupported" },
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};
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G_STATIC_ASSERT(G_N_ELEMENTS(dbus_display_error_entries) ==
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DBUS_DISPLAY_N_ERRORS);
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GQuark
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dbus_display_error_quark(void)
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{
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static gsize quark;
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g_dbus_error_register_error_domain(
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"dbus-display-error-quark",
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&quark,
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dbus_display_error_entries,
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G_N_ELEMENTS(dbus_display_error_entries));
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return (GQuark)quark;
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}
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