* Copyright (c) 1983, 1987, 1989 The Regents of the University of California.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 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
* @(#)resolv.h 5.15 (Berkeley) 4/3/91
* 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 defdname
[MAXDNAME
]; /* default domain */
char *dnsrch
[MAXDNSRCH
+1]; /* components of domain to search */
#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
;
/* 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_query
__P((char *, FILE *));
char *__hostalias
__P((const char *));
void __putlong
__P((u_long
, u_char
*));
void __putshort
__P((u_short
, u_char
*));
char *__p_class
__P((int));
char *__p_time
__P((u_long
));
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 struct rrec
*, char *, int));
int res_send
__P((const char *, int, char *, int));