ntp_intres.h revision 310419 
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 */
19typedef void	(*gai_sometime_callback)
20		    (int, int, void *, const char *, const char *,
21		     const struct addrinfo *, const struct addrinfo *);
22extern int	getaddrinfo_sometime(const char *, const char *,
23				     const struct addrinfo *, int,
24				     gai_sometime_callback, void *);
25extern 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 */
41typedef void	(*gni_sometime_callback)
42		    (int, int, sockaddr_u *, int, const char *,
43		     const char *, void *);
44extern 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. */
49extern void intres_timeout_req(u_int);
50
51#endif	/* NTP_INTRES_H */
52