sd-daemon: introduce sd_watchdog_enabled() for parsing $WATCHDOG_USEC

Also, introduce a new environment variable named $WATCHDOG_PID which
cotnains the PID of the process that is supposed to send the keep-alive
events. This is similar how $LISTEN_FDS and $LISTEN_PID work together,
and protects against confusing processes further down the process tree
due to inherited environment.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/core/execute.h b/src/core/execute.h
index bd3db0b633..989373f481 100644
--- a/src/core/execute.h
+++ b/src/core/execute.h
@@ -181,6 +181,7 @@ int exec_spawn(ExecCommand *command,
                CGroupControllerMask cgroup_mask,
                const char *cgroup_path,
                const char *unit_id,
+               usec_t watchdog_usec,
                int pipe_fd[2],
                ExecRuntime *runtime,
                pid_t *ret);