unit: rework trigger dependency logic

Instead of having explicit type-specific callbacks that inform the
triggering unit when a triggered unit changes state, make this generic
so that state changes are forwarded betwee any triggered and triggering
unit.

Also, get rid of UnitRef references from automount, timer, path units,
to the units they trigger and rely exclsuively on UNIT_TRIGGER type
dendencies.

1 files changed, 0 insertions, 4 deletions

diff --git a/src/core/path.h b/src/core/path.h
index 645feef191..974041539b 100644
--- a/src/core/path.h
+++ b/src/core/path.h
@@ -80,8 +80,6 @@ struct Path {
 
         LIST_HEAD(PathSpec, specs);
 
-        UnitRef unit;
-
         PathState state, deserialized_state;
 
         bool inotify_triggered;
@@ -92,8 +90,6 @@ struct Path {
         PathResult result;
 };
 
-void path_unit_notify(Unit *u, UnitActiveState new_state);
-
 /* Called from the mount code figure out if a mount is a dependency of
  * any of the paths of this path object */
 int path_add_one_mount_link(Path *p, Mount *m);