4 char *fmtaddr(in_addr_t addr
, int n
);
5 void *shared_malloc(unsigned int size
);
6 pid_t
fork_and_close(void);
7 ssize_t
sendtofrom(int s
, void const *buf
, size_t len
, int flags
,
8 struct sockaddr
const *to
, socklen_t tolen
, struct in_addr
const *from
);
10 ssize_t
recvfromto(int s
, void *buf
, size_t len
, int flags
,
11 struct sockaddr
*from
, socklen_t
*fromlen
, struct in_addr
*toaddr
);
13 #endif /* __UTIL_H__ */