login: set_controller should fail if prepare_vt fails

If controllers can expect logind to have "prepared" the VT (e.g. set it to
graphics mode, etc) then TakeControl() should fail if said preparation
failed (and session_restore_vt() was called).

(David: fixed up !CONFIG_VT case and errno-numbers)

1 files changed, 1 insertions, 1 deletions

diff --git a/src/login/logind-session.h b/src/login/logind-session.h
index e62b76d66f..2ab31828ce 100644
--- a/src/login/logind-session.h
+++ b/src/login/logind-session.h
@@ -172,7 +172,7 @@ SessionClass session_class_from_string(const char *s) _pure_;
 const char *kill_who_to_string(KillWho k) _const_;
 KillWho kill_who_from_string(const char *s) _pure_;
 
-void session_prepare_vt(Session *s);
+int session_prepare_vt(Session *s);
 void session_restore_vt(Session *s);
 
 bool session_is_controller(Session *s, const char *sender);