rework tty handling

We now make sure to run all services in their own session, possibly with
a controlling terminal.

This also extends the service and socket state machines a little.

1 files changed, 1 insertions, 0 deletions

diff --git a/unit.h b/unit.h
index 4b732c0f05..ae6e4458ad 100644
--- a/unit.h
+++ b/unit.h
@@ -47,6 +47,7 @@ typedef enum KillMode {
         KILL_CONTROL_GROUP = 0,
         KILL_PROCESS_GROUP,
         KILL_PROCESS,
+        KILL_NONE,
         _KILL_MODE_MAX,
         _KILL_MODE_INVALID = -1
 } KillMode;