old_sid           225 src/main.c         pid_t my_sid, old_sid;
old_sid           232 src/main.c         old_sid = (pid_t) strtol (sid_str, NULL, 0);
old_sid           233 src/main.c         if (old_sid == 0)
old_sid           241 src/main.c         return (old_sid != my_sid);