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bb0cfa24 | 1 | /* |
01b2928e | 2 | * Copyright (c) 1983, 1987, 1989 The Regents of the University of California. |
7ee32d6e KB |
3 | * All rights reserved. |
4 | * | |
863005e5 | 5 | * %sccs.include.redist.c% |
bb0cfa24 | 6 | * |
d2b7358e | 7 | * @(#)resolv.h 5.15 (Berkeley) %G% |
bb0cfa24 DF |
8 | */ |
9 | ||
d2b7358e KB |
10 | #ifndef _RESOLV_H_ |
11 | #define _RESOLV_H_ | |
12 | ||
c363c908 MK |
13 | /* |
14 | * Resolver configuration file. | |
15 | * Normally not present, but may contain the address of the | |
16 | * inital name server(s) to query and the domain search list. | |
17 | */ | |
18 | ||
19 | #ifndef _PATH_RESCONF | |
20 | #define _PATH_RESCONF "/etc/resolv.conf" | |
21 | #endif | |
22 | ||
a4b4ca70 RC |
23 | /* |
24 | * Global defines and variables for resolver stub. | |
25 | */ | |
3dacec68 KB |
26 | #define MAXNS 3 /* max # name servers we'll track */ |
27 | #define MAXDFLSRCH 3 /* # default domain levels to try */ | |
28 | #define MAXDNSRCH 6 /* max # domains in search path */ | |
29 | #define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */ | |
8fa684c1 | 30 | |
3dacec68 | 31 | #define RES_TIMEOUT 5 /* min. seconds between retries */ |
8fa684c1 | 32 | |
a4b4ca70 | 33 | struct state { |
8fa684c1 | 34 | int retrans; /* retransmition time interval */ |
a4b4ca70 | 35 | int retry; /* number of times to retransmit */ |
1ca41cc2 | 36 | long options; /* option flags - see below. */ |
8fa684c1 KD |
37 | int nscount; /* number of name servers */ |
38 | struct sockaddr_in nsaddr_list[MAXNS]; /* address of name server */ | |
39 | #define nsaddr nsaddr_list[0] /* for backward compatibility */ | |
a4b4ca70 RC |
40 | u_short id; /* current packet id */ |
41 | char defdname[MAXDNAME]; /* default domain */ | |
e0bab101 | 42 | char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */ |
a4b4ca70 RC |
43 | }; |
44 | ||
45 | /* | |
46 | * Resolver options | |
47 | */ | |
1ca41cc2 JB |
48 | #define RES_INIT 0x0001 /* address initialized */ |
49 | #define RES_DEBUG 0x0002 /* print debug messages */ | |
50 | #define RES_AAONLY 0x0004 /* authoritative answers only */ | |
51 | #define RES_USEVC 0x0008 /* use virtual circuit */ | |
52 | #define RES_PRIMARY 0x0010 /* query primary server only */ | |
53 | #define RES_IGNTC 0x0020 /* ignore trucation errors */ | |
54 | #define RES_RECURSE 0x0040 /* recursion desired */ | |
55 | #define RES_DEFNAMES 0x0080 /* use default domain name */ | |
56 | #define RES_STAYOPEN 0x0100 /* Keep TCP socket open */ | |
e0bab101 MK |
57 | #define RES_DNSRCH 0x0200 /* search up local domain tree */ |
58 | ||
59 | #define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH) | |
a4b4ca70 RC |
60 | |
61 | extern struct state _res; | |
f0c2b1c5 DS |
62 | |
63 | #include <sys/cdefs.h> | |
542c04c0 | 64 | #include <stdio.h> |
f0c2b1c5 | 65 | |
542c04c0 KB |
66 | /* Private routines shared between libc/net, named, nslookup and others. */ |
67 | #define dn_skipname __dn_skipname | |
68 | #define fp_query __fp_query | |
69 | #define hostalias __hostalias | |
70 | #define putlong __putlong | |
71 | #define putshort __putshort | |
72 | #define p_class __p_class | |
73 | #define p_time __p_time | |
74 | #define p_type __p_type | |
f0c2b1c5 | 75 | __BEGIN_DECLS |
542c04c0 KB |
76 | int __dn_skipname __P((const u_char *, const u_char *)); |
77 | void __fp_query __P((char *, FILE *)); | |
78 | char *__hostalias __P((const char *)); | |
79 | void __putlong __P((u_long, u_char *)); | |
80 | void __putshort __P((u_short, u_char *)); | |
81 | char *__p_class __P((int)); | |
82 | char *__p_time __P((u_long)); | |
83 | char *__p_type __P((int)); | |
84 | ||
85 | int dn_comp __P((const u_char *, u_char *, int, u_char **, u_char **)); | |
86 | int dn_expand __P((const u_char *, const u_char *, const u_char *, | |
328da309 | 87 | u_char *, int)); |
542c04c0 KB |
88 | int res_init __P((void)); |
89 | int res_mkquery __P((int, const char *, int, int, const char *, int, | |
f0c2b1c5 | 90 | const struct rrec *, char *, int)); |
542c04c0 | 91 | int res_send __P((const char *, int, char *, int)); |
f0c2b1c5 | 92 | __END_DECLS |
d2b7358e KB |
93 | |
94 | #endif /* !_RESOLV_H_ */ |