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8fa684c1 | 1 | |
bb0cfa24 | 2 | /* |
e0bab101 | 3 | * Copyright (c) 1983, 1987 Regents of the University of California. |
bb0cfa24 DF |
4 | * All rights reserved. The Berkeley software License Agreement |
5 | * specifies the terms and conditions for redistribution. | |
6 | * | |
e0bab101 | 7 | * @(#)resolv.h 5.5 (Berkeley) %G% |
bb0cfa24 DF |
8 | */ |
9 | ||
a4b4ca70 RC |
10 | /* |
11 | * Global defines and variables for resolver stub. | |
12 | */ | |
13 | ||
a4b4ca70 | 14 | |
8fa684c1 | 15 | #define MAXNS 3 /* max # name servers we'll track */ |
e0bab101 MK |
16 | #define MAXDNSRCH 3 /* max # default domain levels to try */ |
17 | #define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */ | |
8fa684c1 | 18 | |
e0bab101 | 19 | #define RES_TIMEOUT 4 /* seconds between retries */ |
8fa684c1 | 20 | |
a4b4ca70 | 21 | struct state { |
8fa684c1 | 22 | int retrans; /* retransmition time interval */ |
a4b4ca70 | 23 | int retry; /* number of times to retransmit */ |
1ca41cc2 | 24 | long options; /* option flags - see below. */ |
8fa684c1 KD |
25 | int nscount; /* number of name servers */ |
26 | struct sockaddr_in nsaddr_list[MAXNS]; /* address of name server */ | |
27 | #define nsaddr nsaddr_list[0] /* for backward compatibility */ | |
a4b4ca70 RC |
28 | u_short id; /* current packet id */ |
29 | char defdname[MAXDNAME]; /* default domain */ | |
e0bab101 | 30 | char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */ |
a4b4ca70 RC |
31 | }; |
32 | ||
33 | /* | |
34 | * Resolver options | |
35 | */ | |
1ca41cc2 JB |
36 | #define RES_INIT 0x0001 /* address initialized */ |
37 | #define RES_DEBUG 0x0002 /* print debug messages */ | |
38 | #define RES_AAONLY 0x0004 /* authoritative answers only */ | |
39 | #define RES_USEVC 0x0008 /* use virtual circuit */ | |
40 | #define RES_PRIMARY 0x0010 /* query primary server only */ | |
41 | #define RES_IGNTC 0x0020 /* ignore trucation errors */ | |
42 | #define RES_RECURSE 0x0040 /* recursion desired */ | |
43 | #define RES_DEFNAMES 0x0080 /* use default domain name */ | |
44 | #define RES_STAYOPEN 0x0100 /* Keep TCP socket open */ | |
e0bab101 MK |
45 | #define RES_DNSRCH 0x0200 /* search up local domain tree */ |
46 | ||
47 | #define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH) | |
a4b4ca70 RC |
48 | |
49 | extern struct state _res; | |
50 | extern char *p_cdname(), *p_rr(), *p_type(), *p_class(); |