usr/src/include/resolv.h

/*
 * Copyright (c) 1983, 1987 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *	@(#)resolv.h	5.6 (Berkeley) %G%
 */

/*
 * Global defines and variables for resolver stub.
 */
#define	MAXNS		3		/* max # name servers we'll track */
#define	MAXDNSRCH	3		/* max # default domain levels to try */
#define	LOCALDOMAINPARTS 2		/* min levels in name that is "local" */

#define	RES_TIMEOUT	4		/* seconds between retries */

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 */
	char	*dnsrch[MAXDNSRCH+1];	/* components of domain to search */
};

/*
 * 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 */
#define RES_DNSRCH	0x0200		/* search up local domain tree */

#define RES_DEFAULT	(RES_RECURSE | RES_DEFNAMES | RES_DNSRCH)

extern struct state _res;
extern char *p_cdname(), *p_rr(), *p_type(), *p_class();
Commit	Line	Data
	1	/*
	2	* Copyright (c) 1983, 1987 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 the above copyright notice and this paragraph are
	7	* duplicated in all such forms and that any documentation,
	8	* advertising materials, and other materials related to such
	9	* distribution and use acknowledge that the software was developed
	10	* by the University of California, Berkeley. The name of the
	11	* University may not be used to endorse or promote products derived
	12	* from this software without specific prior written permission.
	13	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
	14	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
	15	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
	16	*
	17	* @(#)resolv.h 5.6 (Berkeley) %G%
	18	*/
	19
	20	/*
	21	* Global defines and variables for resolver stub.
	22	*/
	23	#define MAXNS 3 /* max # name servers we'll track */
	24	#define MAXDNSRCH 3 /* max # default domain levels to try */
	25	#define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */
	26
	27	#define RES_TIMEOUT 4 /* seconds between retries */
	28
	29	struct state {
	30	int retrans; /* retransmition time interval */
	31	int retry; /* number of times to retransmit */
	32	long options; /* option flags - see below. */
	33	int nscount; /* number of name servers */
	34	struct sockaddr_in nsaddr_list[MAXNS]; /* address of name server */
	35	#define nsaddr nsaddr_list[0] /* for backward compatibility */
	36	u_short id; /* current packet id */
	37	char defdname[MAXDNAME]; /* default domain */
	38	char dnsrch[MAXDNSRCH+1]; / components of domain to search */
	39	};
	40
	41	/*
	42	* Resolver options
	43	*/
	44	#define RES_INIT 0x0001 /* address initialized */
	45	#define RES_DEBUG 0x0002 /* print debug messages */
	46	#define RES_AAONLY 0x0004 /* authoritative answers only */
	47	#define RES_USEVC 0x0008 /* use virtual circuit */
	48	#define RES_PRIMARY 0x0010 /* query primary server only */
	49	#define RES_IGNTC 0x0020 /* ignore trucation errors */
	50	#define RES_RECURSE 0x0040 /* recursion desired */
	51	#define RES_DEFNAMES 0x0080 /* use default domain name */
	52	#define RES_STAYOPEN 0x0100 /* Keep TCP socket open */
	53	#define RES_DNSRCH 0x0200 /* search up local domain tree */
	54
	55	#define RES_DEFAULT (RES_RECURSE \| RES_DEFNAMES \| RES_DNSRCH)
	56
	57	extern struct state _res;
	58	extern char p_cdname(), p_rr(), p_type(), p_class();