#define MAP_ANON 0x800
#define MAP_ANONYMOUS MAP_ANON
#define MAP_NORESERVE 0x0400
+#define MAP_GROWSDOWN 0x1000
+#define MAP_DENYWRITE 0x2000
+#define MAP_EXECUTABLE 0x4000
+#define MAP_LOCKED 0x8000
#define POSIX_MADV_NORMAL 0
#define POSIX_MADV_RANDOM 1