4.3BSD - /usr/include/resolv.h

   1: 
   2: /*
   3:  * Copyright (c) 1983 Regents of the University of California.
   4:  * All rights reserved.  The Berkeley software License Agreement
   5:  * specifies the terms and conditions for redistribution.
   6:  *
   7:  *	@(#)resolv.h	5.4 (Berkeley) 2/22/86
   8:  */
   9: 
  10: /*
  11:  * Global defines and variables for resolver stub.
  12:  */
  13: 
  14: 
  15: #define MAXNS       3       /* max # name servers we'll track */
  16: 
  17: 
  18: struct state {
  19:     int retrans;        /* retransmition time interval */
  20:     int retry;          /* number of times to retransmit */
  21:     long    options;        /* option flags - see below. */
  22:     int nscount;        /* number of name servers */
  23:     struct  sockaddr_in nsaddr_list[MAXNS]; /* address of name server */
  24: #define nsaddr  nsaddr_list[0]      /* for backward compatibility */
  25:     u_short id;         /* current packet id */
  26:     char    defdname[MAXDNAME]; /* default domain */
  27: };
  28: 
  29: /*
  30:  * Resolver options
  31:  */
  32: #define RES_INIT    0x0001      /* address initialized */
  33: #define RES_DEBUG   0x0002      /* print debug messages */
  34: #define RES_AAONLY  0x0004      /* authoritative answers only */
  35: #define RES_USEVC   0x0008      /* use virtual circuit */
  36: #define RES_PRIMARY 0x0010      /* query primary server only */
  37: #define RES_IGNTC   0x0020      /* ignore trucation errors */
  38: #define RES_RECURSE 0x0040      /* recursion desired */
  39: #define RES_DEFNAMES    0x0080      /* use default domain name */
  40: #define RES_STAYOPEN    0x0100      /* Keep TCP socket open */
  41: 
  42: extern struct state _res;
  43: extern char *p_cdname(), *p_rr(), *p_type(), *p_class();

Defined struct's

Defined macros

Usage of this include