systemctl: show invocation ID in unit status output

I think we should put more emphasis on the invocation ID as a handle for
a specific runtime cycle of a unit. Let's start with actually showing it
to users.

See: #16035

diff --git a/src/systemctl/systemctl-show.c b/src/systemctl/systemctl-show.c
index 7926bfbecafc6933bb70b01ac2befbc917e4f593..aee839de4cae1d4f4fba64c767f3e09da62fc2e7 100644 (file)
--- a/src/systemctl/systemctl-show.c
+++ b/src/systemctl/systemctl-show.c
@@ -196,6 +196,8 @@ typedef struct UnitStatusInfo {
 
         uint64_t runtime_max_sec;
 
+        sd_id128_t invocation_id;
+
         bool need_daemon_reload;
         bool transient;
 
@@ -468,6 +470,9 @@ static void print_status_info(
         } else
                 printf("\n");
 
+        if (!sd_id128_is_null(i->invocation_id))
+                printf(" Invocation: " SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(i->invocation_id));
+
         STRV_FOREACH(t, i->triggered_by) {
                 UnitActiveState state = _UNIT_ACTIVE_STATE_INVALID;
 
@@ -2031,8 +2036,9 @@ static int show_one(
                 { "InactiveExitTimestampMonotonic", "t",               NULL,           offsetof(UnitStatusInfo, inactive_exit_timestamp_monotonic) },
                 { "ActiveEnterTimestamp",           "t",               NULL,           offsetof(UnitStatusInfo, active_enter_timestamp)            },
                 { "ActiveExitTimestamp",            "t",               NULL,           offsetof(UnitStatusInfo, active_exit_timestamp)             },
-                { "RuntimeMaxUSec",                 "t",               NULL,           offsetof(UnitStatusInfo, runtime_max_sec)                   },
                 { "InactiveEnterTimestamp",         "t",               NULL,           offsetof(UnitStatusInfo, inactive_enter_timestamp)          },
+                { "RuntimeMaxUSec",                 "t",               NULL,           offsetof(UnitStatusInfo, runtime_max_sec)                   },
+                { "InvocationID",                   "s",               bus_map_id128,  offsetof(UnitStatusInfo, invocation_id)                     },
                 { "NeedDaemonReload",               "b",               NULL,           offsetof(UnitStatusInfo, need_daemon_reload)                },
                 { "Transient",                      "b",               NULL,           offsetof(UnitStatusInfo, transient)                         },
                 { "ExecMainPID",                    "u",               NULL,           offsetof(UnitStatusInfo, main_pid)                          },