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