service: introduce Type=idle and use it for gettys

Type=idle is much like Type=simple, however between the fork() and the
exec() in the child we wait until PID 1 informs us that no jobs are
left.

This is mostly a cosmetic fix to make gettys appear only after all boot
output is finished and complete.

Note that this does not impact the normal job logic as we do not delay
the completion of any jobs. We just delay the invocation of the actual
binary, and only for services that otherwise would be of Type=simple.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/core/service.h b/src/core/service.h
index eb41314931..819672f617 100644
--- a/src/core/service.h
+++ b/src/core/service.h
@@ -65,6 +65,7 @@ typedef enum ServiceType {
         SERVICE_ONESHOT,  /* we fork and wait until the program finishes (i.e. programs like fsck which run and need to finish before we continue) */
         SERVICE_DBUS,     /* we fork and wait until a specific D-Bus name appears on the bus */
         SERVICE_NOTIFY,   /* we fork and wait until a daemon sends us a ready message with sd_notify() */
+        SERVICE_IDLE,     /* much like simple, but delay exec() until all jobs are dispatched. */
         _SERVICE_TYPE_MAX,
         _SERVICE_TYPE_INVALID = -1
 } ServiceType;