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Annotation of 43BSDReno/include/resolv.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1983, 1987, 1989 The Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms are permitted
                      6:  * provided that: (1) source distributions retain this entire copyright
                      7:  * notice and comment, and (2) distributions including binaries display
                      8:  * the following acknowledgement:  ``This product includes software
                      9:  * developed by the University of California, Berkeley and its contributors''
                     10:  * in the documentation or other materials provided with the distribution
                     11:  * and in all advertising materials mentioning features or use of this
                     12:  * software. Neither the name of the University nor the names of its
                     13:  * contributors may be used to endorse or promote products derived
                     14:  * from this software without specific prior written permission.
                     15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     18:  *
                     19:  *     @(#)resolv.h    5.10 (Berkeley) 6/1/90
                     20:  */
                     21: 
                     22: /*
                     23:  * Resolver configuration file.
                     24:  * Normally not present, but may contain the address of the
                     25:  * inital name server(s) to query and the domain search list.
                     26:  */
                     27: 
                     28: #ifndef _PATH_RESCONF
                     29: #define _PATH_RESCONF        "/etc/resolv.conf"
                     30: #endif
                     31: 
                     32: /*
                     33:  * Global defines and variables for resolver stub.
                     34:  */
                     35: #define        MAXNS           3               /* max # name servers we'll track */
                     36: #define        MAXDFLSRCH      3               /* # default domain levels to try */
                     37: #define        MAXDNSRCH       6               /* max # domains in search path */
                     38: #define        LOCALDOMAINPARTS 2              /* min levels in name that is "local" */
                     39: 
                     40: #define        RES_TIMEOUT     5               /* min. seconds between retries */
                     41: 
                     42: struct state {
                     43:        int     retrans;                /* retransmition time interval */
                     44:        int     retry;                  /* number of times to retransmit */
                     45:        long    options;                /* option flags - see below. */
                     46:        int     nscount;                /* number of name servers */
                     47:        struct  sockaddr_in nsaddr_list[MAXNS]; /* address of name server */
                     48: #define        nsaddr  nsaddr_list[0]          /* for backward compatibility */
                     49:        u_short id;                     /* current packet id */
                     50:        char    defdname[MAXDNAME];     /* default domain */
                     51:        char    *dnsrch[MAXDNSRCH+1];   /* components of domain to search */
                     52: };
                     53: 
                     54: /*
                     55:  * Resolver options
                     56:  */
                     57: #define RES_INIT       0x0001          /* address initialized */
                     58: #define RES_DEBUG      0x0002          /* print debug messages */
                     59: #define RES_AAONLY     0x0004          /* authoritative answers only */
                     60: #define RES_USEVC      0x0008          /* use virtual circuit */
                     61: #define RES_PRIMARY    0x0010          /* query primary server only */
                     62: #define RES_IGNTC      0x0020          /* ignore trucation errors */
                     63: #define RES_RECURSE    0x0040          /* recursion desired */
                     64: #define RES_DEFNAMES   0x0080          /* use default domain name */
                     65: #define RES_STAYOPEN   0x0100          /* Keep TCP socket open */
                     66: #define RES_DNSRCH     0x0200          /* search up local domain tree */
                     67: 
                     68: #define RES_DEFAULT    (RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)
                     69: 
                     70: extern struct state _res;
                     71: extern char *p_cdname(), *p_rr(), *p_type(), *p_class(), *p_time();

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