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Using dbus-glib, you typically call RequestName manually to own a name, like in the following excerpt:
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error = NULL; res = dbus_g_proxy_call (system_bus_proxy, "RequestName", &error, G_TYPE_STRING, NAME_TO_CLAIM, G_TYPE_UINT, DBUS_NAME_FLAG_ALLOW_REPLACEMENT, G_TYPE_INVALID, G_TYPE_UINT, &result, G_TYPE_INVALID); if (!res) { if (error != NULL) { g_warning ("Failed to acquire %s: %s", NAME_TO_CLAIM, error->message); g_error_free (error); } else { g_warning ("Failed to acquire %s", NAME_TO_CLAIM); } goto out; } if (result != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER) { if (error != NULL) { g_warning ("Failed to acquire %s: %s", NAME_TO_CLAIM, error->message); g_error_free (error); } else { g_warning ("Failed to acquire %s", NAME_TO_CLAIM); } exit (1); } dbus_g_proxy_add_signal (system_bus_proxy, "NameLost", G_TYPE_STRING, G_TYPE_INVALID); dbus_g_proxy_connect_signal (system_bus_proxy, "NameLost", G_CALLBACK (on_name_lost), NULL, NULL); /* further setup ... */ |
While you can do things this way with GDBus too, using
g_dbus_proxy_call_sync(), it is much nicer to use the high-level API
for this:
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static void on_name_acquired (GDBusConnection *connection, const gchar *name, gpointer user_data) { /* further setup ... */ } /* ... */ owner_id = g_bus_own_name (G_BUS_TYPE_SYSTEM, NAME_TO_CLAIM, G_BUS_NAME_OWNER_FLAGS_ALLOW_REPLACEMENT, on_bus_acquired, on_name_acquired, on_name_lost, NULL, NULL); g_main_loop_run (loop); g_bus_unown_name (owner_id); |
Note that g_bus_own_name() works asynchronously and requires
you to enter your mainloop to await the on_name_aquired()
callback. Also note that in order to avoid race conditions (e.g.
when your service is activated by a method call), you have to export
your manager object before acquiring the
name. The on_bus_acquired() callback is the right place to do
such preparations.