core: move abstract namespace sockets to /dev/.run

Now that we have /dev/.run there's no need to use abstract namespace
sockets. So, let's move things to /dev/.run, to make things more easily
discoverable and improve compat with chroot() and fs namespacing.

1 files changed, 10 insertions, 2 deletions

diff --git a/src/dbus-common.c b/src/dbus-common.c
index 25b718ec02..bb9cf2e2ab 100644
--- a/src/dbus-common.c
+++ b/src/dbus-common.c
@@ -104,8 +104,16 @@ int bus_connect(DBusBusType t, DBusConnection **_bus, bool *private, DBusError *
 
         /* If we are root, then let's not go via the bus */
         if (geteuid() == 0 && t == DBUS_BUS_SYSTEM) {
-                if (!(bus = dbus_connection_open_private("unix:abstract=/org/freedesktop/systemd1/private", error)))
-                        return -EIO;
+
+                if (!(bus = dbus_connection_open_private("unix:path=/dev/.run/systemd/private", error))) {
+#ifndef LEGACY
+                        dbus_error_free(error);
+
+                        /* Retry with the pre v21 socket name, to ease upgrades */
+                        if (!(bus = dbus_connection_open_private("unix:abstract=/org/freedesktop/systemd1/private", error)))
+#endif
+                                return -EIO;
+                }
 
                 dbus_connection_set_exit_on_disconnect(bus, FALSE);