usr/src/include/resolv.h


/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 *
 *      @(#)resolv.h    5.4 (Berkeley) %G%
 */

/*
 * Global defines and variables for resolver stub.
 */


#define MAXNS           3               /* max # name servers we'll track */


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 */
        u_short id;                     /* current packet id */
        char    defdname[MAXDNAME];     /* default domain */
};

/*
 * 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 */

extern struct state _res;
extern char *p_cdname(), *p_rr(), *p_type(), *p_class();