46: #define FIONCLEX _IO('f', 2) /* remove close on exec */
47: #define FIONREAD _IOR('f', 127, int) /* get # bytes to read */
48: #define FIONBIO _IOW('f', 126, int) /* set/clear non-blocking i/o */
50: #define FIOSETOWN _IOW('f', 124, int) /* set owner */
51: #define FIOGETOWN _IOR('f', 123, int) /* get owner */
52: #define OFIOGETBMAP _IOWR('f', 122, uint32_t) /* get underlying block no. */
53: #define FIOGETBMAP _IOWR('f', 122, daddr_t) /* get underlying block no. */
54: #define FIONWRITE _IOR('f', 121, int) /* get # bytes outstanding
55: * in send queue. */
56: #define FIONSPACE _IOR('f', 120, int) /* get space in send queue. */
57: