core: add unit_dbus_interface_from_type() to unit-name.h

Let's add a way to get the type-specific D-Bus interface of a unit from
either its type or name to src/basic/unit-name.[ch]. That way we can
share it with the client side, where it is useful in tools like cgls or
machinectl.

Also ports over machinectl to make use of this.

1 files changed, 0 insertions, 3 deletions

diff --git a/src/core/unit.h b/src/core/unit.h
index 9df5a7e6fb..f53b7f6da1 100644
--- a/src/core/unit.h
+++ b/src/core/unit.h
@@ -404,9 +404,6 @@ struct UnitVTable {
          * of this type will immediately fail. */
         bool (*supported)(void);
 
-        /* The interface name */
-        const char *bus_interface;
-
         /* The bus vtable */
         const sd_bus_vtable *bus_vtable;