* Copyright (c) 1983, 1987, 1989, 1993
* The Regents of the University of California. All rights reserved.
* %sccs.include.redist.c%
* @(#)resolv.h 8.1 (Berkeley) %G%
* $Id: resolv.h,v 4.9.1.2 1993/05/17 09:59:01 vixie Exp $
* Portions Copyright (c) 1993 by Digital Equipment Corporation.
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies, and that
* the name of Digital Equipment Corporation not be used in advertising or
* publicity pertaining to distribution of the document or software without
* specific, written prior permission.
* THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DIGITAL EQUIPMENT
* CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* Resolver configuration file.
* Normally not present, but may contain the address of the
* inital name server(s) to query and the domain search list.
#define _PATH_RESCONF "/etc/resolv.conf"
* 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 RES_TIMEOUT 5 /* min. seconds between retries */
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. */
* Resolver options (keep these in synch with res_debug.c, please)
#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
#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
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
int __dn_skipname
__P((const u_char
*, const u_char
*));
void __fp_resstat
__P((struct __res_state
*, FILE *));
void __fp_query
__P((char *, FILE *));
char *__hostalias
__P((const char *));
void __putlong
__P((u_int32_t
, u_char
*));
void __putshort
__P((u_short
, u_char
*));
char *__p_class
__P((int));
char *__p_time
__P((u_int32_t
));
char *__p_type
__P((int));
int dn_comp
__P((const u_char
*, u_char
*, int, u_char
**, u_char
**));
int dn_expand
__P((const u_char
*, const u_char
*, const u_char
*,
int res_init
__P((void));
int res_mkquery
__P((int, const char *, int, int, const char *, int,
const char *, char *, int));
int res_send
__P((const char *, int, char *, int));