O_DIRECT
#define O_DIRECT (1 << 19) /* direct disk access - should check with OSF/1 */
#define O_DIRECT (1 << 16) /* direct disk access hint - currently ignored */
#define O_DIRECT (1 << 16) /* direct disk access hint - currently ignored */
#define O_DIRECT (1 << 16) /* direct disk access hint - currently ignored */
#define O_DIRECT (1 << 15) /* direct disk access hint */
#define O_DIRECT (1 << 17) /* direct disk access hint */
#define O_DIRECT (1 << 20) /* direct disk access hint */
#define O_DIRECT (1 << 14) /* direct disk access hint */
#define O_DIRECT 00040000