diff options
| -rw-r--r-- | MAINTAINERS | 2 | ||||
| -rw-r--r-- | include/qemu/dbus.h | 19 | ||||
| -rw-r--r-- | util/Makefile.objs | 3 | ||||
| -rw-r--r-- | util/dbus.c | 57 |
4 files changed, 81 insertions, 0 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 72b253a..e2e879e 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2209,6 +2209,8 @@ F: qapi/migration.json D-Bus M: Marc-André Lureau <marcandre.lureau@redhat.com> S: Maintained +F: util/dbus.c +F: include/qemu/dbus.h F: docs/interop/dbus.rst Seccomp diff --git a/include/qemu/dbus.h b/include/qemu/dbus.h new file mode 100644 index 0000000..9d591f9 --- /dev/null +++ b/include/qemu/dbus.h @@ -0,0 +1,19 @@ +/* + * Helpers for using D-Bus + * + * Copyright (C) 2019 Red Hat, Inc. + * + * This work is licensed under the terms of the GNU GPL, version 2. See + * the COPYING file in the top-level directory. + */ + +#ifndef DBUS_H +#define DBUS_H + +#include <gio/gio.h> + +GStrv qemu_dbus_get_queued_owners(GDBusConnection *connection, + const char *name, + Error **errp); + +#endif /* DBUS_H */ diff --git a/util/Makefile.objs b/util/Makefile.objs index 63599d6..11262aa 100644 --- a/util/Makefile.objs +++ b/util/Makefile.objs @@ -56,3 +56,6 @@ util-obj-$(call lnot,$(CONFIG_INOTIFY1)) += filemonitor-stub.o util-obj-$(CONFIG_LINUX) += vfio-helpers.o util-obj-$(CONFIG_POSIX) += drm.o util-obj-y += guest-random.o +util-obj-$(CONFIG_GIO) += dbus.o +dbus.o-cflags = $(GIO_CFLAGS) +dbus.o-libs = $(GIO_LIBS) diff --git a/util/dbus.c b/util/dbus.c new file mode 100644 index 0000000..9099dc5 --- /dev/null +++ b/util/dbus.c @@ -0,0 +1,57 @@ +/* + * Helpers for using D-Bus + * + * Copyright (C) 2019 Red Hat, Inc. + * + * This work is licensed under the terms of the GNU GPL, version 2. See + * the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "qemu/dbus.h" +#include "qemu/error-report.h" +#include "qapi/error.h" + +/* + * qemu_dbus_get_queued_owners() - return the list of queued unique names + * @connection: A GDBusConnection + * @name: a service name + * + * Return: a GStrv of unique names, or NULL on failure. + */ +GStrv +qemu_dbus_get_queued_owners(GDBusConnection *connection, const char *name, + Error **errp) +{ + g_autoptr(GDBusProxy) proxy = NULL; + g_autoptr(GVariant) result = NULL; + g_autoptr(GVariant) child = NULL; + g_autoptr(GError) err = NULL; + + proxy = g_dbus_proxy_new_sync(connection, G_DBUS_PROXY_FLAGS_NONE, NULL, + "org.freedesktop.DBus", + "/org/freedesktop/DBus", + "org.freedesktop.DBus", + NULL, &err); + if (!proxy) { + error_setg(errp, "Failed to create DBus proxy: %s", err->message); + return NULL; + } + + result = g_dbus_proxy_call_sync(proxy, "ListQueuedOwners", + g_variant_new("(s)", name), + G_DBUS_CALL_FLAGS_NO_AUTO_START, + -1, NULL, &err); + if (!result) { + if (g_error_matches(err, + G_DBUS_ERROR, + G_DBUS_ERROR_NAME_HAS_NO_OWNER)) { + return g_new0(char *, 1); + } + error_setg(errp, "Failed to call ListQueuedOwners: %s", err->message); + return NULL; + } + + child = g_variant_get_child_value(result, 0); + return g_variant_dup_strv(child, NULL); +} |