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RESOLV.H
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C/C++ Source or Header
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1998-05-08
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3KB
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65 lines
#ifndef __RESOLV_32H
#define __RESOLV_32H
/*
* Copyright (c) 1983, 1987 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* @(#)resolv.h 5.6 (Berkeley) 9/20/88
*/
/*
* Global defines and variables for resolver stub.
*/
#define MAXNS 3 /* max # name servers we'll track */
#define MAXDNSRCH 3 /* max # default domain levels to try */
#define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */
#define RES_TIMEOUT 4 /* seconds between retries */
#pragma pack(4) /* force on doubleword boundary */
struct 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 */
unsigned short id; /* current packet id */
char defdname[MAXDNAME]; /* default domain */
char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */
};
#pragma pack() /* reset to default packing */
/*
* 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)
extern struct state _res;
#endif /*__RESOLV_32H */