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