-#define O_APPEND 00000010
-#define O_BLKSEEK 00000100 /* HPUX only */
-#define O_CREAT 00000400 /* not fcntl */
-#define O_EXCL 00002000 /* not fcntl */
-#define O_LARGEFILE 00004000
-#define O_SYNC 00100000
-#define O_NONBLOCK 00200004 /* HPUX has separate NDELAY & NONBLOCK */
-#define O_NOCTTY 00400000 /* not fcntl */
-#define O_DSYNC 01000000 /* HPUX only */
-#define O_RSYNC 02000000 /* HPUX only */
-#define O_NOATIME 04000000
+#define O_APPEND 000000010
+#define O_BLKSEEK 000000100 /* HPUX only */
+#define O_CREAT 000000400 /* not fcntl */
+#define O_EXCL 000002000 /* not fcntl */
+#define O_LARGEFILE 000004000
+#define O_SYNC 000100000
+#define O_NONBLOCK 000200004 /* HPUX has separate NDELAY & NONBLOCK */
+#define O_NOCTTY 000400000 /* not fcntl */
+#define O_DSYNC 001000000 /* HPUX only */
+#define O_RSYNC 002000000 /* HPUX only */
+#define O_NOATIME 004000000
+#define O_CLOEXEC 010000000 /* set close_on_exec */