1 /* 2 * ntp_intres.h - client interface to blocking-worker name resolution. 3 */ 4 #ifndef NTP_INTRES_H 5 #define NTP_INTRES_H 6 7 #include <ntp_worker.h> 8 9 #ifdef WORKER 10 #define INITIAL_DNS_RETRY 2 /* seconds between queries */ 11 12 /* flags for extended addrinfo version */ 13 #define GAIR_F_IGNDNSERR 0x0001 /* ignore DNS errors */ 14 15 /* 16 * you call getaddrinfo_sometime(name, service, &hints, retry, callback_func, context); 17 * later (*callback_func)(rescode, gai_errno, context, name, service, hints, ai_result) is called. 18 */ 19 typedef void (*gai_sometime_callback) 20 (int, int, void *, const char *, const char *, 21 const struct addrinfo *, const struct addrinfo *); 22 extern int getaddrinfo_sometime(const char *, const char *, 23 const struct addrinfo *, int, 24 gai_sometime_callback, void *); 25 extern int getaddrinfo_sometime_ex(const char *, const char *, 26 const struct addrinfo *, int, 27 gai_sometime_callback, void *, u_int); 28 /* 29 * In gai_sometime_callback routines, the resulting addrinfo list is 30 * only available until the callback returns. To hold on to the list 31 * of addresses after the callback returns, use copy_addrinfo_list(): 32 * 33 * struct addrinfo *copy_addrinfo_list(const struct addrinfo *); 34 */ 35 36 37 /* 38 * you call getnameinfo_sometime(sockaddr, namelen, servlen, flags, callback_func, context); 39 * later (*callback_func)(rescode, gni_errno, sockaddr, flags, name, service, context) is called. 40 */ 41 typedef void (*gni_sometime_callback) 42 (int, int, sockaddr_u *, int, const char *, 43 const char *, void *); 44 extern int getnameinfo_sometime(sockaddr_u *, size_t, size_t, int, 45 gni_sometime_callback, void *); 46 #endif /* WORKER */ 47 48 /* intres_timeout_req() is provided by the client, ntpd or sntp. */ 49 extern void intres_timeout_req(u_int); 50 51 #endif /* NTP_INTRES_H */ 52