resolv.h
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上传日期:2008-05-12
资源大小:23136k
文件大小:6k
源码类别:
VxWorks
开发平台:
C/C++
- /* resolv.h - resolver internal data structures header file */
- /* Copyright 1984-2001 Wind River Systems, Inc. */
- /* $NetBSD: resolv.h,v 1.8 1994/10/26 00:56:16 cgd Exp $ */
- /*
- * Copyright (c) 1983, 1987, 1989 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)resolv.h 5.15 (Berkeley) 4/3/91
- */
- /*
- modification history
- --------------------
- 01c,24sep01,gls removed definition of __P() macro (SPR #28330)
- 01b,02apr97,jag Change types from u_int*_t to uint*_t. Added C++ and function
- prototypes.
- 01a,11dec96,jag created from BSD4.4 release. Deleted constants that are not
- used by vxWorks. Changed bit fields to meet ANSI specs.
- */
- #ifndef __INCresolvh
- #define __INCresolvh
- #include <stdio.h>
- #ifdef __cplusplus
- extern "C" {
- #endif
- /*
- * revision information. this is the release date in YYYYMMDD format.
- * it can change every day so the right thing to do with it is use it
- * in preprocessor commands such as "#if (__RES > 19931104)". do not
- * compare for equality; rather, use it to determine whether your resolver
- * is new enough to contain a certain feature.
- */
- #define __RES 19931104
- /*
- * Global defines and variables for resolver stub.
- */
- #define MAXNS 3 /* max # name servers we'll track */
- #define MAXDFLSRCH 3 /* # default domain levels to try */
- #define MAXDNSRCH 6 /* max # domains in search path */
- #define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */
- #define MAXDNSLUS 4 /* max # of host lookup types */
- #define RES_TIMEOUT 5 /* min. seconds between retries */
- #define MAXRESOLVSORT 10 /* number of net to sort on */
- #define RES_MAXNDOTS 15 /* should reflect bit field size */
- #if ((CPU_FAMILY==I960) && (defined __GNUC__))
- #pragma align 1 /* tell gcc960 not to optimize alignments */
- #endif /* CPU_FAMILY==I960 */
- struct __res_state {
- int retrans; /* retransmition time interval */
- int retry; /* number of times to retransmit */
- long options; /* option flags - see below. */
- int nscount; /* number of name servers */
- struct sockaddr_in nsaddr_list[MAXNS]; /* address of name server */
- #define nsaddr nsaddr_list[0] /* for backward compatibility */
- u_short id; /* current packet id */
- char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */
- char defdname[MAXDNAME]; /* default domain */
- long pfcode; /* RES_PRF_ flags - see below. */
- u_int ndots:4, /* threshold for initial abs. query */
- nsort:4, /* number of elements in sort_list[] */
- :0; /* ANSI padding field */
- struct {
- struct in_addr addr;
- uint32_t mask;
- } sort_list[MAXRESOLVSORT];
- char lookups[MAXDNSLUS];
- };
- #if ((CPU_FAMILY==I960) && (defined __GNUC__))
- #pragma align 0 /* turn off alignment requirement */
- #endif /* CPU_FAMILY==I960 */
- /*
- * Resolver options
- */
- #define RES_INIT 0x0001 /* address initialized */
- #define RES_DEBUG 0x0002 /* print debug messages */
- #define RES_AAONLY 0x0004 /* authoritative answers only */
- #define RES_USEVC 0x0008 /* use virtual circuit */
- #define RES_PRIMARY 0x0010 /* query primary server only */
- #define RES_IGNTC 0x0020 /* ignore trucation errors */
- #define RES_RECURSE 0x0040 /* recursion desired */
- #define RES_DEFNAMES 0x0080 /* use default domain name */
- #define RES_STAYOPEN 0x0100 /* Keep TCP socket open */
- #define RES_DNSRCH 0x0200 /* search up local domain tree */
- #define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
- /*
- * Resolver "pfcode" values. Used by dig.
- */
- #define RES_PRF_STATS 0x0001
- /* 0x0002 */
- #define RES_PRF_CLASS 0x0004
- #define RES_PRF_CMD 0x0008
- #define RES_PRF_QUES 0x0010
- #define RES_PRF_ANS 0x0020
- #define RES_PRF_AUTH 0x0040
- #define RES_PRF_ADD 0x0080
- #define RES_PRF_HEAD1 0x0100
- #define RES_PRF_HEAD2 0x0200
- #define RES_PRF_TTLID 0x0400
- #define RES_PRF_HEADX 0x0800
- #define RES_PRF_QUERY 0x1000
- #define RES_PRF_REPLY 0x2000
- #define RES_PRF_INIT 0x4000
- /* 0x8000 */
- extern struct __res_state _res;
- /* Private routines shared between libc/net, named, nslookup and others. */
- #define dn_skipname __dn_skipname
- #define fp_query __fp_query
- #define hostalias __hostalias
- #define putlong __putlong
- #define putshort __putshort
- #define p_class __p_class
- #define p_time __p_time
- #define p_type __p_type
- int __dn_skipname __P((const u_char *, const u_char *));
- void __fp_query __P((char *, FILE *));
- char *__hostalias __P((const char *));
- void __putlong __P((uint32_t, u_char *));
- void __putshort __P((uint16_t, u_char *));
- char *__p_class __P((int));
- char *__p_time __P((uint32_t));
- char *__p_type __P((int));
- int resQuery __P((char *, int, int, u_char *, int));
- int resSearch __P((const char *, int, int, u_char *, int));
- int resMkQuery __P((int, const char *, int, int, const char *, int,
- const char *, char *, int));
- int resSend __P((const char *, int, char *, int));
- #ifdef __cplusplus
- }
- #endif
- #endif /* __INCresolvh */