logind: make sure there's always a getty available on TTY6

Previously, if X allocated all 6 TTYs (for multi-session for example) no
getty would be available anymore to guarantee console-based logins.

With the new ReserveVT= switch in logind.conf we can now choose one VT
(6 by default) that will always be subject to autovt-style activation,
i.e. we'll always have a getty on TTY6, and X will never take possession
of it.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/login/logind.h b/src/login/logind.h
index 24d705b541..8aa28a322c 100644
--- a/src/login/logind.h
+++ b/src/login/logind.h
@@ -68,6 +68,9 @@ struct Manager {
 
         unsigned n_autovts;
 
+        unsigned reserve_vt;
+        int reserve_vt_fd;
+
         Seat *vtconsole;
 
         char *cgroup_path;