snapshot: snapshots are just a special kind of transient units now

2 files changed, 16 insertions, 15 deletions

diff --git a/src/core/snapshot.c b/src/core/snapshot.c
index a63eccd8de..1423854098 100644
--- a/src/core/snapshot.c
+++ b/src/core/snapshot.c
@@ -40,6 +40,7 @@ static void snapshot_init(Unit *u) {
 
         UNIT(s)->ignore_on_isolate = true;
         UNIT(s)->ignore_on_snapshot = true;
+        UNIT(s)->allow_isolate = true;
 }
 
 static void snapshot_set_state(Snapshot *s, SnapshotState state) {
@@ -66,7 +67,7 @@ static int snapshot_load(Unit *u) {
 
         /* Make sure that only snapshots created via snapshot_create()
          * can be loaded */
-        if (!s->by_snapshot_create && UNIT(s)->manager->n_reloading <= 0)
+        if (!u->transient && UNIT(s)->manager->n_reloading <= 0)
                 return -ENOENT;
 
         u->load_state = UNIT_LOADED;
@@ -151,21 +152,24 @@ static int snapshot_deserialize_item(Unit *u, const char *key, const char *value
         if (streq(key, "state")) {
                 SnapshotState state;
 
-                if ((state = snapshot_state_from_string(value)) < 0)
+                state = snapshot_state_from_string(value);
+                if (state < 0)
                         log_debug("Failed to parse state value %s", value);
                 else
                         s->deserialized_state = state;
 
         } else if (streq(key, "cleanup")) {
 
-                if ((r = parse_boolean(value)) < 0)
+                r = parse_boolean(value);
+                if (r < 0)
                         log_debug("Failed to parse cleanup value %s", value);
                 else
                         s->cleanup = r;
 
         } else if (streq(key, "wants")) {
 
-                if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_WANTS, value, NULL, true)) < 0)
+                r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_WANTS, value, NULL, true);
+                if (r < 0)
                         return r;
         } else
                 log_debug("Unknown serialization key '%s'", key);
@@ -186,9 +190,9 @@ _pure_ static const char *snapshot_sub_state_to_string(Unit *u) {
 }
 
 int snapshot_create(Manager *m, const char *name, bool cleanup, DBusError *e, Snapshot **_s) {
-        Iterator i;
+        _cleanup_free_ char *n = NULL;
         Unit *other, *u = NULL;
-        char *n = NULL;
+        Iterator i;
         int r;
         const char *k;
 
@@ -221,24 +225,22 @@ int snapshot_create(Manager *m, const char *name, bool cleanup, DBusError *e, Sn
                                 break;
 
                         free(n);
+                        n = NULL;
                 }
-
-                name = n;
         }
 
         r = manager_load_unit_prepare(m, name, NULL, e, &u);
-        free(n);
-
         if (r < 0)
                 goto fail;
 
-        SNAPSHOT(u)->by_snapshot_create = true;
+        u->transient = true;
         manager_dispatch_load_queue(m);
         assert(u->load_state == UNIT_LOADED);
 
         HASHMAP_FOREACH_KEY(other, k, m->units, i) {
 
-                if (other->ignore_on_snapshot)
+                if (other->ignore_on_snapshot ||
+                    other->transient)
                         continue;
 
                 if (k != other->id)
@@ -251,12 +253,12 @@ int snapshot_create(Manager *m, const char *name, bool cleanup, DBusError *e, Sn
                 if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
                         continue;
 
-                if ((r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_WANTS, other, true)) < 0)
+                r = unit_add_two_dependencies(u, UNIT_AFTER, UNIT_WANTS, other, true);
+                if (r < 0)
                         goto fail;
         }
 
         SNAPSHOT(u)->cleanup = cleanup;
-        u->allow_isolate = true;
         *_s = SNAPSHOT(u);
 
         return 0;
diff --git a/src/core/snapshot.h b/src/core/snapshot.h
index 56f87cff4d..2675b1b242 100644
--- a/src/core/snapshot.h
+++ b/src/core/snapshot.h
@@ -38,7 +38,6 @@ struct Snapshot {
         SnapshotState state, deserialized_state;
 
         bool cleanup;
-        bool by_snapshot_create:1;
 };
 
 extern const UnitVTable snapshot_vtable;