Using fifos for locking can be error prone.

flocks are safer, as we only use tmpfs for our lock files.

I don't know how this works for inactive just yet though ...

src/includes/rc-misc.h

@@ -150,6 +150,8 @@ bool rc_conf_yesno(const char *var);
 void env_filter(void);
 void env_config(void);
 int signal_setup(int sig, void (*handler)(int));
+int svc_lock(const char *);
+int svc_unlock(const char *, int);
 pid_t exec_service(const char *, const char *);
 
 #define service_start(service) exec_service(service, "start");