- sprintf(reply_buf, "%d\n", getpid());
- ftruncate(fd_pidfile, 0);
- write(fd_pidfile, reply_buf, strlen(reply_buf));
+ sprintf(reply_buf, "%8d\n", getpid());
+ if (ftruncate(fd_pidfile, 0)) {} /* Silence warn_unused_result */
+ write_all(fd_pidfile, reply_buf, strlen(reply_buf));