1 files changed, 33 insertions, 19 deletions

diff --git a/src/core/slice.c b/src/core/slice.c
index c7700b8857..ed5d3fd701 100644
--- a/src/core/slice.c
+++ b/src/core/slice.c
@@ -130,6 +130,28 @@ static int slice_verify(Slice *s) {
         return 0;
 }
 
+static int slice_load_root_slice(Unit *u) {
+        assert(u);
+
+        if (!unit_has_name(u, SPECIAL_ROOT_SLICE))
+                return 0;
+
+        u->perpetual = true;
+
+        /* The root slice is a bit special. For example it is always running and cannot be terminated. Because of its
+         * special semantics we synthesize it here, instead of relying on the unit file on disk. */
+
+        u->default_dependencies = false;
+        u->ignore_on_isolate = true;
+
+        if (!u->description)
+                u->description = strdup("Root Slice");
+        if (!u->documentation)
+                u->documentation = strv_new("man:systemd.special(7)", NULL);
+
+        return 1;
+}
+
 static int slice_load(Unit *u) {
         Slice *s = SLICE(u);
         int r;
@@ -137,6 +159,9 @@ static int slice_load(Unit *u) {
         assert(s);
         assert(u->load_state == UNIT_STUB);
 
+        r = slice_load_root_slice(u);
+        if (r < 0)
+                return r;
         r = unit_load_fragment_and_dropin_optional(u);
         if (r < 0)
                 return r;
@@ -187,10 +212,15 @@ static void slice_dump(Unit *u, FILE *f, const char *prefix) {
 
 static int slice_start(Unit *u) {
         Slice *t = SLICE(u);
+        int r;
 
         assert(t);
         assert(t->state == SLICE_DEAD);
 
+        r = unit_acquire_invocation_id(u);
+        if (r < 0)
+                return r;
+
         (void) unit_realize_cgroup(u);
         (void) unit_reset_cpu_usage(u);
 
@@ -269,32 +299,16 @@ static void slice_enumerate(Manager *m) {
 
         u = manager_get_unit(m, SPECIAL_ROOT_SLICE);
         if (!u) {
-                u = unit_new(m, sizeof(Slice));
-                if (!u)  {
-                        log_oom();
-                        return;
-                }
-
-                r = unit_add_name(u, SPECIAL_ROOT_SLICE);
+                r = unit_new_for_name(m, sizeof(Slice), SPECIAL_ROOT_SLICE, &u);
                 if (r < 0) {
-                        unit_free(u);
-                        log_error_errno(r, "Failed to add -.slice name");
+                        log_error_errno(r, "Failed to allocate the special " SPECIAL_ROOT_SLICE " unit: %m");
                         return;
                 }
         }
 
-        u->default_dependencies = false;
-        u->no_gc = true;
-        u->ignore_on_isolate = true;
-        u->refuse_manual_start = true;
-        u->refuse_manual_stop = true;
+        u->perpetual = true;
         SLICE(u)->deserialized_state = SLICE_ACTIVE;
 
-        if (!u->description)
-                u->description = strdup("Root Slice");
-        if (!u->documentation)
-                (void) strv_extend(&u->documentation, "man:systemd.special(7)");
-
         unit_add_to_load_queue(u);
         unit_add_to_dbus_queue(u);
 }