Fix procd not handling rapid reboot signals very well

When keeping ctrl-alt-del pressed, or when running;
while true; do
    /sbin/reboot
done
effectively the procd shutdown cycle gets into an undefined state,

Signed-off-by: Michel Stam <m.stam@fugro.nl>

1 files changed, 2 insertions, 0 deletions

diff --git a/state.c b/state.c
index e5f0015..bba5966 100644
--- a/state.c
+++ b/state.c
@@ -94,6 +94,8 @@ void procd_state_next(void)
 
 void procd_shutdown(int event)
 {
+	if (state >= STATE_SHUTDOWN)
+		return;
 	DEBUG(2, "Shutting down system with event %x\n", event);
 	reboot_event = event;
 	state = STATE_SHUTDOWN;