service: add support for reboot argument when triggered by StartLimitAction=

When rebooting with systemctl, an optional argument can be passed to the
reboot system call. This makes it possible the specify the argument in a
service file and use it when the service triggers a restart.
This is useful to distinguish between manual reboots and reboots caused by
failing services.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/core/service.h b/src/core/service.h
index 1992926e92..fd05e9be89 100644
--- a/src/core/service.h
+++ b/src/core/service.h
@@ -189,6 +189,7 @@ struct Service {
 
         RateLimit start_limit;
         StartLimitAction start_limit_action;
+        char *reboot_arg;
 
         UnitRef accept_socket;