systemctl: add help for --type/-t

The list of types and load states if lengthy, so a little reminder
can be sometimes useful.

2 files changed, 5 insertions, 3 deletions

diff --git a/src/shared/unit-name.c b/src/shared/unit-name.c
index 50031e608e..88ca0b8f2c 100644
--- a/src/shared/unit-name.c
+++ b/src/shared/unit-name.c
@@ -33,7 +33,7 @@
         "ABCDEFGHIJKLMNOPQRSTUVWXYZ"            \
         ":-_.\\"
 
-static const char* const unit_type_table[_UNIT_TYPE_MAX] = {
+const char* const unit_type_table[_UNIT_TYPE_MAX] = {
         [UNIT_SERVICE] = "service",
         [UNIT_SOCKET] = "socket",
         [UNIT_TARGET] = "target",
@@ -48,7 +48,7 @@ static const char* const unit_type_table[_UNIT_TYPE_MAX] = {
 
 DEFINE_STRING_TABLE_LOOKUP(unit_type, UnitType);
 
-static const char* const unit_load_state_table[_UNIT_LOAD_STATE_MAX] = {
+const char* const unit_load_state_table[_UNIT_LOAD_STATE_MAX] = {
         [UNIT_STUB] = "stub",
         [UNIT_LOADED] = "loaded",
         [UNIT_ERROR] = "error",
diff --git a/src/shared/unit-name.h b/src/shared/unit-name.h
index 7be346590e..d7528a3ac7 100644
--- a/src/shared/unit-name.h
+++ b/src/shared/unit-name.h
@@ -44,7 +44,7 @@ enum UnitType {
 };
 
 enum UnitLoadState {
-        UNIT_STUB,
+        UNIT_STUB = 0,
         UNIT_LOADED,
         UNIT_ERROR,
         UNIT_MERGED,
@@ -53,9 +53,11 @@ enum UnitLoadState {
         _UNIT_LOAD_STATE_INVALID = -1
 };
 
+extern const char* const unit_type_table[];
 const char *unit_type_to_string(UnitType i);
 UnitType unit_type_from_string(const char *s);
 
+extern const char* const unit_load_state_table[];
 const char *unit_load_state_to_string(UnitLoadState i);
 UnitLoadState unit_load_state_from_string(const char *s);