2 files changed, 12 insertions, 0 deletions
diff --git a/src/shared/install.c b/src/shared/install.c
index 931d3e2907..b92afbc971 100644
--- a/src/shared/install.c
+++ b/src/shared/install.c
@@ -68,6 +68,16 @@ typedef struct {
 
 static int unit_file_lookup_state(UnitFileScope scope, const LookupPaths *paths, const char *name, UnitFileState *ret);
 
+bool unit_type_may_alias(UnitType type) {
+        return IN_SET(type,
+                      UNIT_SERVICE,
+                      UNIT_SOCKET,
+                      UNIT_TARGET,
+                      UNIT_DEVICE,
+                      UNIT_TIMER,
+                      UNIT_PATH);
+}
+
 static int in_search_path(const LookupPaths *p, const char *path) {
         _cleanup_free_ char *parent = NULL;
         char **i;
diff --git a/src/shared/install.h b/src/shared/install.h
index 4ffc5a21f2..8a8bd09c7c 100644
--- a/src/shared/install.h
+++ b/src/shared/install.h
@@ -138,6 +138,8 @@ static inline bool UNIT_FILE_INSTALL_INFO_HAS_ALSO(UnitFileInstallInfo *i) {
         return !strv_isempty(i->also);
 }
 
+bool unit_type_may_alias(UnitType type) _const_;
+
 int unit_file_enable(
                 UnitFileScope scope,
                 bool runtime,