old_sid           227 src/main.c         pid_t my_sid, old_sid;
old_sid           234 src/main.c         old_sid = (pid_t) strtol (sid_str, NULL, 0);
old_sid           235 src/main.c         if (old_sid == 0)
old_sid           243 src/main.c         return (old_sid != my_sid);