+ assert(t);
+ assert(f);
+
+ fprintf(f,
+ "%sTarget State: %s\n",
+ prefix, state_string_table[t->state]);
+}
+
+static void target_set_state(Target *t, TargetState state) {
+ TargetState old_state;
+ assert(t);
+
+ old_state = t->state;
+ t->state = state;
+
+ log_debug("%s changed %s → %s", unit_id(UNIT(t)), state_string_table[old_state], state_string_table[state]);
+
+ unit_notify(UNIT(t), state_translation_table[old_state], state_translation_table[state]);
+}
+
+static int target_start(Unit *u) {
+ Target *t = TARGET(u);
+
+ assert(t);
+ assert(t->state == TARGET_DEAD);
+
+ target_set_state(t, TARGET_ACTIVE);
+ return 0;
+}
+
+static int target_stop(Unit *u) {
+ Target *t = TARGET(u);
+
+ assert(t);
+ assert(t->state == TARGET_ACTIVE);
+
+ target_set_state(t, TARGET_DEAD);
+ return 0;