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-rw-r--r--src/core/dbus-manager.c13
-rw-r--r--src/core/slice.c1
2 files changed, 13 insertions, 1 deletions
diff --git a/src/core/dbus-manager.c b/src/core/dbus-manager.c
index 72ad6121e0..67e4e8b218 100644
--- a/src/core/dbus-manager.c
+++ b/src/core/dbus-manager.c
@@ -655,7 +655,18 @@ static int transient_unit_from_message(
if (r < 0)
return r;
- if (u->load_state != UNIT_NOT_FOUND ||
+ /* Check if the unit already exists or is already referenced,
+ * in a number of different ways. Note that to cater for unit
+ * types such as slice, we are generally fine with units that
+ * are marked UNIT_LOADED even even though nothing was
+ * actually loaded, as those unit types don't require a file
+ * on disk to validly load. */
+
+ if (!IN_SET(u->load_state, UNIT_NOT_FOUND, UNIT_LOADED) ||
+ u->fragment_path ||
+ u->source_path ||
+ !strv_isempty(u->dropin_paths) ||
+ u->refs ||
set_size(u->dependencies[UNIT_REFERENCED_BY]) > 0)
return sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS, "Unit %s already exists.", name);
diff --git a/src/core/slice.c b/src/core/slice.c
index 39dabae055..9c488f0fd7 100644
--- a/src/core/slice.c
+++ b/src/core/slice.c
@@ -305,6 +305,7 @@ const UnitVTable slice_vtable = {
.no_alias = true,
.no_instances = true,
+ .can_transient = true,
.load = slice_load,