xref: /illumos-gate/usr/src/lib/libresolv/resolv.h (revision 7c478bd9)
1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate  * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate  *
4*7c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate  * with the License.
8*7c478bd9Sstevel@tonic-gate  *
9*7c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate  * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate  *
14*7c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate  *
20*7c478bd9Sstevel@tonic-gate  * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate  */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate  * Copyright 1989 Sun Microsystems, Inc.  All rights reserved.
24*7c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
25*7c478bd9Sstevel@tonic-gate  */
26*7c478bd9Sstevel@tonic-gate 
27*7c478bd9Sstevel@tonic-gate /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
28*7c478bd9Sstevel@tonic-gate /*	  All Rights Reserved  	*/
29*7c478bd9Sstevel@tonic-gate 
30*7c478bd9Sstevel@tonic-gate /*
31*7c478bd9Sstevel@tonic-gate  * Portions of this source code were derived from Berkeley 4.3 BSD
32*7c478bd9Sstevel@tonic-gate  * under license from the Regents of the University of California.
33*7c478bd9Sstevel@tonic-gate  */
34*7c478bd9Sstevel@tonic-gate 
35*7c478bd9Sstevel@tonic-gate /*
36*7c478bd9Sstevel@tonic-gate  * Global defines and variables for resolver stub.
37*7c478bd9Sstevel@tonic-gate  */
38*7c478bd9Sstevel@tonic-gate 
39*7c478bd9Sstevel@tonic-gate #ifndef	_RESOLV_H
40*7c478bd9Sstevel@tonic-gate #define	_RESOLV_H
41*7c478bd9Sstevel@tonic-gate 
42*7c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
43*7c478bd9Sstevel@tonic-gate 
44*7c478bd9Sstevel@tonic-gate #include <stdio.h>
45*7c478bd9Sstevel@tonic-gate 
46*7c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
47*7c478bd9Sstevel@tonic-gate extern "C" {
48*7c478bd9Sstevel@tonic-gate #endif
49*7c478bd9Sstevel@tonic-gate 
50*7c478bd9Sstevel@tonic-gate /*
51*7c478bd9Sstevel@tonic-gate  * Resolver configuration file.
52*7c478bd9Sstevel@tonic-gate  * Normally not present, but may contain the address of the
53*7c478bd9Sstevel@tonic-gate  * inital name server(s) to query and the domain search list.
54*7c478bd9Sstevel@tonic-gate  */
55*7c478bd9Sstevel@tonic-gate 
56*7c478bd9Sstevel@tonic-gate #ifndef	_PATH_RESCONF
57*7c478bd9Sstevel@tonic-gate #define	_PATH_RESCONF	"/etc/resolv.conf"
58*7c478bd9Sstevel@tonic-gate #endif
59*7c478bd9Sstevel@tonic-gate 
60*7c478bd9Sstevel@tonic-gate #define	ADDRSORT	1		/* enable the address-sorting option */
61*7c478bd9Sstevel@tonic-gate #define	MAXADDR		10		/* max # addresses to sort by */
62*7c478bd9Sstevel@tonic-gate 
63*7c478bd9Sstevel@tonic-gate #define	MAXNS		3		/* max # name servers we'll track */
64*7c478bd9Sstevel@tonic-gate #define	MAXDFLSRCH	3		/* # default domain levels to try */
65*7c478bd9Sstevel@tonic-gate #define	MAXDNSRCH	6		/* max # default domain levels to try */
66*7c478bd9Sstevel@tonic-gate #define	LOCALDOMAINPARTS 2		/* min levels in name that is "local" */
67*7c478bd9Sstevel@tonic-gate 
68*7c478bd9Sstevel@tonic-gate #define	RES_TIMEOUT	6		/* seconds between retries */
69*7c478bd9Sstevel@tonic-gate 
70*7c478bd9Sstevel@tonic-gate struct state {
71*7c478bd9Sstevel@tonic-gate 	int	retrans;		/* retransmition time interval */
72*7c478bd9Sstevel@tonic-gate 	int	retry;			/* number of times to retransmit */
73*7c478bd9Sstevel@tonic-gate 	long	options;		/* option flags - see below. */
74*7c478bd9Sstevel@tonic-gate 	int	nscount;		/* number of name servers */
75*7c478bd9Sstevel@tonic-gate 	struct	sockaddr_in nsaddr_list[MAXNS];	/* address of name server */
76*7c478bd9Sstevel@tonic-gate #define	nsaddr	nsaddr_list[0]		/* for backward compatibility */
77*7c478bd9Sstevel@tonic-gate 	u_short	id;			/* current packet id */
78*7c478bd9Sstevel@tonic-gate 	char	defdname[MAXDNAME];	/* default domain */
79*7c478bd9Sstevel@tonic-gate 	char	*dnsrch[MAXDNSRCH+1];	/* components of domain to search */
80*7c478bd9Sstevel@tonic-gate 	int	ascount;		/* number of addresses */
81*7c478bd9Sstevel@tonic-gate 	struct  in_addr sort_list[MAXADDR]; /* address sorting list */
82*7c478bd9Sstevel@tonic-gate };
83*7c478bd9Sstevel@tonic-gate 
84*7c478bd9Sstevel@tonic-gate /*
85*7c478bd9Sstevel@tonic-gate  * Resolver options
86*7c478bd9Sstevel@tonic-gate  */
87*7c478bd9Sstevel@tonic-gate #define	RES_INIT	0x0001		/* address initialized */
88*7c478bd9Sstevel@tonic-gate #define	RES_DEBUG	0x0002		/* print debug messages */
89*7c478bd9Sstevel@tonic-gate #define	RES_AAONLY	0x0004		/* authoritative answers only */
90*7c478bd9Sstevel@tonic-gate #define	RES_USEVC	0x0008		/* use virtual circuit */
91*7c478bd9Sstevel@tonic-gate #define	RES_PRIMARY	0x0010		/* query primary server only */
92*7c478bd9Sstevel@tonic-gate #define	RES_IGNTC	0x0020		/* ignore trucation errors */
93*7c478bd9Sstevel@tonic-gate #define	RES_RECURSE	0x0040		/* recursion desired */
94*7c478bd9Sstevel@tonic-gate #define	RES_DEFNAMES	0x0080		/* use default domain name */
95*7c478bd9Sstevel@tonic-gate #define	RES_STAYOPEN	0x0100		/* Keep TCP socket open */
96*7c478bd9Sstevel@tonic-gate #define	RES_DNSRCH	0x0200		/* search up local domain tree */
97*7c478bd9Sstevel@tonic-gate 
98*7c478bd9Sstevel@tonic-gate #define	RES_DEFAULT	(RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
99*7c478bd9Sstevel@tonic-gate 
100*7c478bd9Sstevel@tonic-gate extern struct state _res;
101*7c478bd9Sstevel@tonic-gate 
102*7c478bd9Sstevel@tonic-gate #ifdef __STDC__
103*7c478bd9Sstevel@tonic-gate extern char *p_cdname(char *, char *, FILE *);
104*7c478bd9Sstevel@tonic-gate extern char *p_rr(char *, char *, FILE *);
105*7c478bd9Sstevel@tonic-gate extern char *p_type(int);
106*7c478bd9Sstevel@tonic-gate extern char *p_class(int);
107*7c478bd9Sstevel@tonic-gate extern char *p_time(unsigned long);
108*7c478bd9Sstevel@tonic-gate #else
109*7c478bd9Sstevel@tonic-gate extern char *p_cdname(), *p_rr(), *p_type(), *p_class(), *p_time();
110*7c478bd9Sstevel@tonic-gate #endif	/* __STDC__ */
111*7c478bd9Sstevel@tonic-gate 
112*7c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
113*7c478bd9Sstevel@tonic-gate }
114*7c478bd9Sstevel@tonic-gate #endif
115*7c478bd9Sstevel@tonic-gate 
116*7c478bd9Sstevel@tonic-gate #endif	/* _RESOLV_H */
117