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authorLennart Poettering <lennart@poettering.net>2010-06-04 22:03:22 +0200
committerLennart Poettering <lennart@poettering.net>2010-06-04 22:03:22 +0200
commit6dded4c70528150a771f51ce6f15a22c39df9109 (patch)
treec7f6cdcfccf91c07abf8294bab9ae7c3411c13a5 /src
parentc4653a4dfe059fa5ec84157ba2cd7ab2fd7c3faa (diff)
dbus: there might be names already registered before we can connect, make sure to enumerate them when checking whether a service is already started
Diffstat (limited to 'src')
-rw-r--r--src/dbus.c94
1 files changed, 94 insertions, 0 deletions
diff --git a/src/dbus.c b/src/dbus.c
index 65e4daa01c..81ff5de231 100644
--- a/src/dbus.c
+++ b/src/dbus.c
@@ -589,6 +589,95 @@ oom:
return -ENOMEM;
}
+static void query_name_list_pending_cb(DBusPendingCall *pending, void *userdata) {
+ DBusMessage *reply;
+ DBusError error;
+ Manager *m = userdata;
+
+ assert(m);
+
+ dbus_error_init(&error);
+
+ assert_se(reply = dbus_pending_call_steal_reply(pending));
+
+ switch (dbus_message_get_type(reply)) {
+
+ case DBUS_MESSAGE_TYPE_ERROR:
+
+ assert_se(dbus_set_error_from_message(&error, reply));
+ log_warning("ListNames() failed: %s", error.message);
+ break;
+
+ case DBUS_MESSAGE_TYPE_METHOD_RETURN: {
+ int r;
+ char **l;
+
+ if ((r = bus_parse_strv(reply, &l)) < 0)
+ log_warning("Failed to parse ListNames() reply: %s", strerror(-r));
+ else {
+ char **t;
+
+ STRV_FOREACH(t, l)
+ /* This is a bit hacky, we say the
+ * owner of the name is the name
+ * itself, because we don't want the
+ * extra traffic to figure out the
+ * real owner. */
+ manager_dispatch_bus_name_owner_changed(m, *t, NULL, *t);
+
+ strv_free(l);
+ }
+
+ break;
+ }
+
+ default:
+ assert_not_reached("Invalid reply message");
+ }
+
+ dbus_message_unref(reply);
+ dbus_error_free(&error);
+}
+
+static int query_name_list(Manager *m) {
+ DBusMessage *message = NULL;
+ DBusPendingCall *pending = NULL;
+
+ /* Asks for the currently installed bus names */
+
+ if (!(message = dbus_message_new_method_call(
+ DBUS_SERVICE_DBUS,
+ DBUS_PATH_DBUS,
+ DBUS_INTERFACE_DBUS,
+ "ListNames")))
+ goto oom;
+
+ if (!dbus_connection_send_with_reply(m->api_bus, message, &pending, -1))
+ goto oom;
+
+ if (!dbus_pending_call_set_notify(pending, query_name_list_pending_cb, m, NULL))
+ goto oom;
+
+ dbus_message_unref(message);
+ dbus_pending_call_unref(pending);
+
+ /* We simple ask for the list and don't wait for it. Sooner or
+ * later we'll get it. */
+
+ return 0;
+
+oom:
+ if (pending) {
+ dbus_pending_call_cancel(pending);
+ dbus_pending_call_unref(pending);
+ }
+
+ if (message)
+ dbus_message_unref(message);
+
+ return -ENOMEM;
+}
+
static int bus_setup_loop(Manager *m, DBusConnection *bus) {
assert(m);
assert(bus);
@@ -735,6 +824,11 @@ int bus_init_api(Manager *m) {
return r;
}
+ if ((r = query_name_list(m)) < 0) {
+ bus_done_api(m);
+ return r;
+ }
+
log_debug("Successfully connected to API D-Bus bus %s as %s",
strnull((id = dbus_connection_get_server_id(m->api_bus))),
strnull(dbus_bus_get_unique_name(m->api_bus)));