1 files changed, 4 insertions, 0 deletions
diff --git a/src/core/unit.h b/src/core/unit.h
index f6587ba5f0..19fa2f0585 100644
--- a/src/core/unit.h
+++ b/src/core/unit.h
@@ -396,6 +396,10 @@ struct UnitVTable {
         /* Type specific cleanups. */
         void (*shutdown)(Manager *m);
 
+        /* If this function is set and return false all jobs for units
+         * of this type will immediately fail. */
+        bool (*supported)(Manager *m);
+
         /* The interface name */
         const char *bus_interface;