Move UnitActiveState to basic/

Preparation to allow systemctl to query the list of unit states.

src/basic/unit-name.c

@@ -839,6 +839,17 @@ static const char* const unit_load_state_table[_UNIT_LOAD_STATE_MAX] = {
 
 DEFINE_STRING_TABLE_LOOKUP(unit_load_state, UnitLoadState);
 
+static const char* const unit_active_state_table[_UNIT_ACTIVE_STATE_MAX] = {
+        [UNIT_ACTIVE] = "active",
+        [UNIT_RELOADING] = "reloading",
+        [UNIT_INACTIVE] = "inactive",
+        [UNIT_FAILED] = "failed",
+        [UNIT_ACTIVATING] = "activating",
+        [UNIT_DEACTIVATING] = "deactivating"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(unit_active_state, UnitActiveState);
+
 static const char* const unit_dependency_table[_UNIT_DEPENDENCY_MAX] = {
         [UNIT_REQUIRES] = "Requires",
         [UNIT_REQUIRES_OVERRIDABLE] = "RequiresOverridable",

src/basic/unit-name.h

@@ -29,6 +29,7 @@
 
 typedef enum UnitType UnitType;
 typedef enum UnitLoadState UnitLoadState;
+typedef enum UnitActiveState UnitActiveState;
 typedef enum UnitDependency UnitDependency;
 
 enum UnitType {
@@ -60,6 +61,17 @@ enum UnitLoadState {
         _UNIT_LOAD_STATE_INVALID = -1
 };
 
+enum UnitActiveState {
+        UNIT_ACTIVE,
+        UNIT_RELOADING,
+        UNIT_INACTIVE,
+        UNIT_FAILED,
+        UNIT_ACTIVATING,
+        UNIT_DEACTIVATING,
+        _UNIT_ACTIVE_STATE_MAX,
+        _UNIT_ACTIVE_STATE_INVALID = -1
+};
+
 enum UnitDependency {
         /* Positive dependencies */
         UNIT_REQUIRES,
@@ -176,5 +188,8 @@ UnitType unit_type_from_string(const char *s) _pure_;
 const char *unit_load_state_to_string(UnitLoadState i) _const_;
 UnitLoadState unit_load_state_from_string(const char *s) _pure_;
 
+const char *unit_active_state_to_string(UnitActiveState i) _const_;
+UnitActiveState unit_active_state_from_string(const char *s) _pure_;
+
 const char *unit_dependency_to_string(UnitDependency i) _const_;
 UnitDependency unit_dependency_from_string(const char *s) _pure_;