[thirdparty/glibc.git] / resolv / resolv.h

/*
 * Copyright (c) 1983, 1987, 1989
 *    The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*
 * Portions Copyright (c) 1996-1999 by Internet Software Consortium.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
 * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 * SOFTWARE.
 */

/*
 *	@(#)resolv.h	8.1 (Berkeley) 6/2/93
 *	$BINDId: resolv.h,v 8.31 2000/03/30 20:16:50 vixie Exp $
 */

#ifndef _RESOLV_H_

/* These headers are needed for types used in the `struct res_state'
   declaration.  */
#include <sys/types.h>
#include <netinet/in.h>

#ifndef __need_res_state
# define _RESOLV_H_

# include <sys/param.h>
# include <sys/cdefs.h>
# include <stdio.h>
# include <arpa/nameser.h>
#endif

#ifndef __res_state_defined
# define __res_state_defined

/*
 * Global defines and variables for resolver stub.
 */
# define MAXNS			3	/* max # name servers we'll track */
# define MAXDFLSRCH		3	/* # default domain levels to try */
# define MAXDNSRCH		6	/* max # domains in search path */
# define LOCALDOMAINPARTS	2	/* min levels in name that is "local" */

# define RES_TIMEOUT		5	/* min. seconds between retries */
# define MAXRESOLVSORT		10	/* number of net to sort on */
# define RES_MAXNDOTS		15	/* should reflect bit field size */
# define RES_MAXRETRANS		30	/* only for resolv.conf/RES_OPTIONS */
# define RES_MAXRETRY		5	/* only for resolv.conf/RES_OPTIONS */
# define RES_DFLRETRY		2	/* Default #/tries. */
# define RES_MAXTIME		65535	/* Infinity, in milliseconds. */

struct __res_state {
	int	retrans;		/* retransmition time interval */
	int	retry;			/* number of times to retransmit */
	unsigned 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 */
	unsigned short id;		/* current message id */
	/* 2 byte hole here.  */
	char	*dnsrch[MAXDNSRCH+1];	/* components of domain to search */
	char	defdname[256];		/* default domain (deprecated) */
	unsigned long pfcode;		/* RES_PRF_ flags - see below. */
	unsigned ndots:4;		/* threshold for initial abs. query */
	unsigned nsort:4;		/* number of elements in sort_list[] */
	unsigned ipv6_unavail:1;	/* connecting to IPv6 server failed */
	unsigned unused:23;
	struct {
		struct in_addr	addr;
		uint32_t	mask;
	} sort_list[MAXRESOLVSORT];
	/* 4 byte hole here on 64-bit architectures.  */
	void * __glibc_unused_qhook;
	void * __glibc_unused_rhook;
	int	res_h_errno;		/* last one set for this context */
	int	_vcsock;		/* PRIVATE: for res_send VC i/o */
	unsigned int _flags;		/* PRIVATE: see below */
	/* 4 byte hole here on 64-bit architectures.  */
	union {
		char	pad[52];	/* On an i386 this means 512b total. */
		struct {
			uint16_t		nscount;
			uint16_t		nsmap[MAXNS];
			int			nssocks[MAXNS];
			uint16_t		nscount6;
			uint16_t		nsinit;
			struct sockaddr_in6	*nsaddrs[MAXNS];
#ifdef _LIBC
			unsigned long long int	initstamp
			  __attribute__((packed));
#else
			unsigned int		_initstamp[2];
#endif
		} _ext;
	} _u;
};

typedef struct __res_state *res_state;
# undef __need_res_state
#endif

#ifdef _RESOLV_H_
/*
 * Revision information.  This is the release date in YYYYMMDD format.
 * It can change every day so the right thing to do with it is use it
 * in preprocessor commands such as "#if (__RES > 19931104)".  Do not
 * compare for equality; rather, use it to determine whether your resolver
 * is new enough to contain a certain feature.
 */

#define	__RES	19991006

/*
 * Resolver configuration file.
 * Normally not present, but may contain the address of the
 * inital name server(s) to query and the domain search list.
 */

#ifndef _PATH_RESCONF
#define _PATH_RESCONF        "/etc/resolv.conf"
#endif

struct res_sym {
	int	number;		/* Identifying number, like T_MX */
	char *	name;		/* Its symbolic name, like "MX" */
	char *	humanname;	/* Its fun name, like "mail exchanger" */
};

/*
 * Resolver flags (used to be discrete per-module statics ints).
 */
#define	RES_F_VC	0x00000001	/* socket is TCP */
#define	RES_F_CONN	0x00000002	/* socket is connected */
#define RES_F_EDNS0ERR	0x00000004	/* EDNS0 caused errors */

/* res_findzonecut() options */
#define	RES_EXHAUSTIVE	0x00000001	/* always do all queries */

/*
 * Resolver options (keep these in synch with res_debug.c, please)
 */
#define RES_INIT	0x00000001	/* address initialized */
#define RES_DEBUG	0x00000002	/* print debug messages */
#define RES_AAONLY \
  __glibc_macro_warning ("RES_AAONLY is deprecated") 0x00000004
#define RES_USEVC	0x00000008	/* use virtual circuit */
#define RES_PRIMARY \
  __glibc_macro_warning ("RES_PRIMARY is deprecated") 0x00000010
#define RES_IGNTC	0x00000020	/* ignore trucation errors */
#define RES_RECURSE	0x00000040	/* recursion desired */
#define RES_DEFNAMES	0x00000080	/* use default domain name */
#define RES_STAYOPEN	0x00000100	/* Keep TCP socket open */
#define RES_DNSRCH	0x00000200	/* search up local domain tree */
#define	RES_INSECURE1	0x00000400	/* type 1 security disabled */
#define	RES_INSECURE2	0x00000800	/* type 2 security disabled */
#define	RES_NOALIASES	0x00001000	/* shuts off HOSTALIASES feature */
#define	RES_USE_INET6	0x00002000	/* use/map IPv6 in gethostbyname() */
#define RES_ROTATE	0x00004000	/* rotate ns list after each query */
#define	RES_NOCHECKNAME \
  __glibc_macro_warning ("RES_NOCHECKNAME is deprecated") 0x00008000
#define	RES_KEEPTSIG \
  __glibc_macro_warning ("RES_KEEPTSIG is deprecated") 0x00010000
#define	RES_BLAST	0x00020000	/* blast all recursive servers */
#define RES_USEBSTRING	0x00040000	/* IPv6 reverse lookup with byte
					   strings */
#define RES_NOIP6DOTINT	0x00080000	/* Do not use .ip6.int in IPv6
					   reverse lookup */
#define RES_USE_EDNS0	0x00100000	/* Use EDNS0.  */
#define RES_SNGLKUP	0x00200000	/* one outstanding request at a time */
#define RES_SNGLKUPREOP	0x00400000	/* -"-, but open new socket for each
					   request */
#define RES_USE_DNSSEC	0x00800000	/* use DNSSEC using OK bit in OPT */
#define RES_NOTLDQUERY	0x01000000	/* Do not look up unqualified name
					   as a TLD.  */

#define RES_DEFAULT	(RES_RECURSE|RES_DEFNAMES|RES_DNSRCH|RES_NOIP6DOTINT)

/*
 * Resolver "pfcode" values.  Used by dig.
 */
#define RES_PRF_STATS	0x00000001
#define RES_PRF_UPDATE	0x00000002
#define RES_PRF_CLASS   0x00000004
#define RES_PRF_CMD	0x00000008
#define RES_PRF_QUES	0x00000010
#define RES_PRF_ANS	0x00000020
#define RES_PRF_AUTH	0x00000040
#define RES_PRF_ADD	0x00000080
#define RES_PRF_HEAD1	0x00000100
#define RES_PRF_HEAD2	0x00000200
#define RES_PRF_TTLID	0x00000400
#define RES_PRF_HEADX	0x00000800
#define RES_PRF_QUERY	0x00001000
#define RES_PRF_REPLY	0x00002000
#define RES_PRF_INIT	0x00004000
/*			0x00008000	*/

/* Things involving an internal (static) resolver context. */
__BEGIN_DECLS
extern struct __res_state *__res_state(void) __attribute__ ((__const__));
__END_DECLS
#define _res (*__res_state())

#define fp_nquery		__fp_nquery
#define fp_query		__fp_query
#define hostalias		__hostalias
#define p_query			__p_query
#define res_close		__res_close
#define res_init		__res_init
#define res_isourserver		__res_isourserver
#define res_mkquery		__res_mkquery
#define res_query		__res_query
#define res_querydomain		__res_querydomain
#define res_search		__res_search
#define res_send		__res_send

__BEGIN_DECLS
void		fp_nquery (const unsigned char *, int, FILE *) __THROW;
void		fp_query (const unsigned char *, FILE *) __THROW;
const char *	hostalias (const char *) __THROW;
void		p_query (const unsigned char *) __THROW;
void		res_close (void) __THROW;
int		res_init (void) __THROW;
int		res_isourserver (const struct sockaddr_in *) __THROW;
int		res_mkquery (int, const char *, int, int,
			     const unsigned char *, int, const unsigned char *,
			     unsigned char *, int) __THROW;
int		res_query (const char *, int, int, unsigned char *, int)
     __THROW;
int		res_querydomain (const char *, const char *, int, int,
				 unsigned char *, int) __THROW;
int		res_search (const char *, int, int, unsigned char *, int)
     __THROW;
int		res_send (const unsigned char *, int, unsigned char *, int)
     __THROW;
__END_DECLS

#define b64_ntop		__b64_ntop
#define b64_pton		__b64_pton
#define dn_comp			__dn_comp
#define dn_count_labels		__dn_count_labels
#define dn_expand		__dn_expand
#define dn_skipname		__dn_skipname
#define fp_resstat		__fp_resstat
#define loc_aton		__loc_aton
#define loc_ntoa		__loc_ntoa
#define p_cdname		__p_cdname
#define p_cdnname		__p_cdnname
#define p_class			__p_class
#define p_fqname		__p_fqname
#define p_fqnname		__p_fqnname
#define p_option		__p_option
#define p_secstodate		__p_secstodate
#define p_section		__p_section
#define p_time			__p_time
#define p_type			__p_type
#define p_rcode			__p_rcode
#define putlong			__putlong
#define putshort		__putshort
#define res_dnok		__res_dnok
#define res_hnok		__res_hnok
#define res_hostalias		__res_hostalias
#define res_mailok		__res_mailok
#define res_nameinquery		__res_nameinquery
#define res_nclose		__res_nclose
#define res_ninit		__res_ninit
#define res_nmkquery		__res_nmkquery
#define res_npquery		__res_npquery
#define res_nquery		__res_nquery
#define res_nquerydomain	__res_nquerydomain
#define res_nsearch		__res_nsearch
#define res_nsend		__res_nsend
#define res_nisourserver	__res_nisourserver
#define res_ownok		__res_ownok
#define res_queriesmatch	__res_queriesmatch
#define res_randomid		__res_randomid
#define sym_ntop		__sym_ntop
#define sym_ntos		__sym_ntos
#define sym_ston		__sym_ston
__BEGIN_DECLS
int		res_hnok (const char *) __THROW;
int		res_ownok (const char *) __THROW;
int		res_mailok (const char *) __THROW;
int		res_dnok (const char *) __THROW;
int		sym_ston (const struct res_sym *, const char *, int *) __THROW;
const char *	sym_ntos (const struct res_sym *, int, int *) __THROW;
const char *	sym_ntop (const struct res_sym *, int, int *) __THROW;
int		b64_ntop (const unsigned char *, size_t, char *, size_t)
     __THROW;
int		b64_pton (char const *, unsigned char *, size_t) __THROW;
int		loc_aton (const char *__ascii, unsigned char *__binary) __THROW;
const char *	loc_ntoa (const unsigned char *__binary, char *__ascii) __THROW;
int		dn_skipname (const unsigned char *, const unsigned char *)
     __THROW;
void		putlong (uint32_t, unsigned char *) __THROW;
void		putshort (uint16_t, unsigned char *) __THROW;
const char *	p_class (int) __THROW;
const char *	p_time (uint32_t) __THROW;
const char *	p_type (int) __THROW;
const char *	p_rcode (int) __THROW;
const unsigned char * p_cdnname (const unsigned char *,
				 const unsigned char *, int, FILE *) __THROW;
const unsigned char * p_cdname (const unsigned char *, const unsigned char *,
				FILE *) __THROW;
const unsigned char * p_fqnname (const unsigned char *__cp,
				 const unsigned char *__msg,
				 int, char *, int) __THROW;
const unsigned char * p_fqname (const unsigned char *,
				const unsigned char *, FILE *) __THROW;
const char *	p_option (unsigned long __option) __THROW;
char *		p_secstodate (unsigned long) __THROW;
int		dn_count_labels (const char *) __THROW;
int		dn_comp (const char *, unsigned char *, int, unsigned char **,
			 unsigned char **) __THROW;
int		dn_expand (const unsigned char *, const unsigned char *,
			   const unsigned char *, char *, int) __THROW;
unsigned int	res_randomid (void) __THROW;
int		res_nameinquery (const char *, int, int,
				 const unsigned char *,
				 const unsigned char *) __THROW;
int		res_queriesmatch (const unsigned char *,
				  const unsigned char *,
				  const unsigned char *,
				  const unsigned char *) __THROW;
const char *	p_section (int __section, int __opcode) __THROW;
/* Things involving a resolver context. */
int		res_ninit (res_state) __THROW;
int		res_nisourserver (const res_state,
				  const struct sockaddr_in *) __THROW;
void		fp_resstat (const res_state, FILE *) __THROW;
void		res_npquery (const res_state, const unsigned char *, int,
			     FILE *) __THROW;
const char *	res_hostalias (const res_state, const char *, char *, size_t)
     __THROW;
int		res_nquery (res_state, const char *, int, int,
			    unsigned char *, int) __THROW;
int		res_nsearch (res_state, const char *, int, int,
			     unsigned char *, int) __THROW;
int		res_nquerydomain (res_state, const char *, const char *, int,
				  int, unsigned char *, int) __THROW;
int		res_nmkquery (res_state, int, const char *, int, int,
			      const unsigned char *, int,
			      const unsigned char *, unsigned char *, int)
     __THROW;
int		res_nsend (res_state, const unsigned char *, int,
			   unsigned char *, int) __THROW;
void		res_nclose (res_state) __THROW;
__END_DECLS
#endif

#endif /* !_RESOLV_H_ */
Commit	Line	Data
28f540f4	1	/*
e685e07d	2	* Copyright (c) 1983, 1987, 1989
28f540f4	3	* The Regents of the University of California. All rights reserved.
835bf8e0	4	*
28f540f4 RM	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
28f540f4 RM	13	* 4. Neither the name of the University nor the names of its contributors
	14	* may be used to endorse or promote products derived from this software
	15	* without specific prior written permission.
835bf8e0	16	*
28f540f4 RM	17	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	18	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	19	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	20	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	21	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	22	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	23	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	24	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	25	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	26	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	27	* SUCH DAMAGE.
28f540f4 RM	28	*/
28f540f4 RM	29
b43b13ac UD	30	/*
	31	* Portions Copyright (c) 1996-1999 by Internet Software Consortium.
	32	*
	33	* Permission to use, copy, modify, and distribute this software for any
	34	* purpose with or without fee is hereby granted, provided that the above
	35	* copyright notice and this permission notice appear in all copies.
	36	*
	37	* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
	38	* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
	39	* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
	40	* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
	41	* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
	42	* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
	43	* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
	44	* SOFTWARE.
	45	*/
	46
28f540f4 RM	47	/*
28f540f4 RM	48	* @(#)resolv.h 8.1 (Berkeley) 6/2/93
e685e07d	49	* $BINDId: resolv.h,v 8.31 2000/03/30 20:16:50 vixie Exp $
28f540f4 RM	50	*/
28f540f4 RM	51
e685e07d	52	#ifndef _RESOLV_H_
64ca3f32 RM	53
	54	/* These headers are needed for types used in the `struct res_state'
	55	declaration. */
	56	#include <sys/types.h>
	57	#include <netinet/in.h>
	58
535b764d UD	59	#ifndef __need_res_state
535b764d UD	60	# define _RESOLV_H_
a5a0310d	61
535b764d	62	# include <sys/param.h>
535b764d UD	63	# include <sys/cdefs.h>
	64	# include <stdio.h>
	65	# include <arpa/nameser.h>
28f540f4	66	#endif
e685e07d	67
535b764d UD	68	#ifndef __res_state_defined
535b764d UD	69	# define __res_state_defined
28f540f4 RM	70
	71	/*
	72	* Global defines and variables for resolver stub.
	73	*/
535b764d UD	74	# define MAXNS 3 /* max # name servers we'll track */
	75	# define MAXDFLSRCH 3 /* # default domain levels to try */
	76	# define MAXDNSRCH 6 /* max # domains in search path */
	77	# define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */
28f540f4	78
535b764d UD	79	# define RES_TIMEOUT 5 /* min. seconds between retries */
	80	# define MAXRESOLVSORT 10 /* number of net to sort on */
	81	# define RES_MAXNDOTS 15 /* should reflect bit field size */
	82	# define RES_MAXRETRANS 30 /* only for resolv.conf/RES_OPTIONS */
	83	# define RES_MAXRETRY 5 /* only for resolv.conf/RES_OPTIONS */
	84	# define RES_DFLRETRY 2 /* Default #/tries. */
	85	# define RES_MAXTIME 65535 /* Infinity, in milliseconds. */
28f540f4 RM	86
28f540f4 RM	87	struct __res_state {
f87dfb1f	88	int retrans; /* retransmition time interval */
28f540f4	89	int retry; /* number of times to retransmit */
11160cb7	90	unsigned long options; /* option flags - see below. */
28f540f4 RM	91	int nscount; /* number of name servers */
	92	struct sockaddr_in
	93	nsaddr_list[MAXNS]; /* address of name server */
535b764d	94	# define nsaddr nsaddr_list[0] /* for backward compatibility */
11160cb7	95	unsigned short id; /* current message id */
ae1ad3ae	96	/* 2 byte hole here. */
28f540f4	97	char dnsrch[MAXDNSRCH+1]; / components of domain to search */
845dcb57	98	char defdname[256]; /* default domain (deprecated) */
11160cb7	99	unsigned long pfcode; /* RES_PRF_ flags - see below. */
28f540f4 RM	100	unsigned ndots:4; /* threshold for initial abs. query */
28f540f4 RM	101	unsigned nsort:4; /* number of elements in sort_list[] */
ae1ad3ae UD	102	unsigned ipv6_unavail:1; /* connecting to IPv6 server failed */
ae1ad3ae UD	103	unsigned unused:23;
28f540f4 RM	104	struct {
28f540f4 RM	105	struct in_addr addr;
11160cb7	106	uint32_t mask;
28f540f4	107	} sort_list[MAXRESOLVSORT];
ae1ad3ae	108	/* 4 byte hole here on 64-bit architectures. */
6815a33d FW	109	void * __glibc_unused_qhook;
6815a33d FW	110	void * __glibc_unused_rhook;
b43b13ac	111	int res_h_errno; /* last one set for this context */
e685e07d	112	int _vcsock; /* PRIVATE: for res_send VC i/o */
11160cb7	113	unsigned int _flags; /* PRIVATE: see below */
ae1ad3ae	114	/* 4 byte hole here on 64-bit architectures. */
e685e07d UD	115	union {
	116	char pad[52]; /* On an i386 this means 512b total. */
	117	struct {
11160cb7 ZW	118	uint16_t nscount;
11160cb7 ZW	119	uint16_t nsmap[MAXNS];
e685e07d	120	int nssocks[MAXNS];
11160cb7 ZW	121	uint16_t nscount6;
11160cb7 ZW	122	uint16_t nsinit;
438e8239	123	struct sockaddr_in6 *nsaddrs[MAXNS];
87bb6b6c UD	124	#ifdef _LIBC
	125	unsigned long long int initstamp
	126	__attribute__((packed));
	127	#else
	128	unsigned int _initstamp[2];
	129	#endif
e685e07d UD	130	} _ext;
e685e07d UD	131	} _u;
28f540f4 RM	132	};
28f540f4 RM	133
b43b13ac	134	typedef struct __res_state *res_state;
535b764d UD	135	# undef __need_res_state
	136	#endif
	137
	138	#ifdef _RESOLV_H_
	139	/*
	140	* Revision information. This is the release date in YYYYMMDD format.
	141	* It can change every day so the right thing to do with it is use it
	142	* in preprocessor commands such as "#if (__RES > 19931104)". Do not
	143	* compare for equality; rather, use it to determine whether your resolver
	144	* is new enough to contain a certain feature.
	145	*/
	146
	147	#define __RES 19991006
	148
	149	/*
	150	* Resolver configuration file.
	151	* Normally not present, but may contain the address of the
	152	* inital name server(s) to query and the domain search list.
	153	*/
	154
	155	#ifndef _PATH_RESCONF
	156	#define _PATH_RESCONF "/etc/resolv.conf"
	157	#endif
	158
	159	struct res_sym {
	160	int number; /* Identifying number, like T_MX */
	161	char * name; /* Its symbolic name, like "MX" */
	162	char * humanname; /* Its fun name, like "mail exchanger" */
	163	};
b43b13ac UD	164
	165	/*
	166	* Resolver flags (used to be discrete per-module statics ints).
	167	*/
	168	#define RES_F_VC 0x00000001 /* socket is TCP */
	169	#define RES_F_CONN 0x00000002 /* socket is connected */
2bbb7d5b	170	#define RES_F_EDNS0ERR 0x00000004 /* EDNS0 caused errors */
b43b13ac UD	171
	172	/* res_findzonecut() options */
	173	#define RES_EXHAUSTIVE 0x00000001 /* always do all queries */
	174
28f540f4 RM	175	/*
	176	* Resolver options (keep these in synch with res_debug.c, please)
	177	*/
	178	#define RES_INIT 0x00000001 /* address initialized */
	179	#define RES_DEBUG 0x00000002 /* print debug messages */
bfbd1de1 FW	180	#define RES_AAONLY \
bfbd1de1 FW	181	__glibc_macro_warning ("RES_AAONLY is deprecated") 0x00000004
28f540f4	182	#define RES_USEVC 0x00000008 /* use virtual circuit */
bfbd1de1 FW	183	#define RES_PRIMARY \
bfbd1de1 FW	184	__glibc_macro_warning ("RES_PRIMARY is deprecated") 0x00000010
28f540f4 RM	185	#define RES_IGNTC 0x00000020 /* ignore trucation errors */
	186	#define RES_RECURSE 0x00000040 /* recursion desired */
	187	#define RES_DEFNAMES 0x00000080 /* use default domain name */
	188	#define RES_STAYOPEN 0x00000100 /* Keep TCP socket open */
	189	#define RES_DNSRCH 0x00000200 /* search up local domain tree */
	190	#define RES_INSECURE1 0x00000400 /* type 1 security disabled */
	191	#define RES_INSECURE2 0x00000800 /* type 2 security disabled */
3d61b63c	192	#define RES_NOALIASES 0x00001000 /* shuts off HOSTALIASES feature */
fa0bc87c	193	#define RES_USE_INET6 0x00002000 /* use/map IPv6 in gethostbyname() */
b43b13ac	194	#define RES_ROTATE 0x00004000 /* rotate ns list after each query */
bfbd1de1 FW	195	#define RES_NOCHECKNAME \
	196	__glibc_macro_warning ("RES_NOCHECKNAME is deprecated") 0x00008000
	197	#define RES_KEEPTSIG \
	198	__glibc_macro_warning ("RES_KEEPTSIG is deprecated") 0x00010000
e685e07d	199	#define RES_BLAST 0x00020000 /* blast all recursive servers */
ee778b56 UD	200	#define RES_USEBSTRING 0x00040000 /* IPv6 reverse lookup with byte
ee778b56 UD	201	strings */
340ef046 UD	202	#define RES_NOIP6DOTINT 0x00080000 /* Do not use .ip6.int in IPv6
340ef046 UD	203	reverse lookup */
2bbb7d5b	204	#define RES_USE_EDNS0 0x00100000 /* Use EDNS0. */
ae061910	205	#define RES_SNGLKUP 0x00200000 /* one outstanding request at a time */
44d20bca UD	206	#define RES_SNGLKUPREOP 0x00400000 /* -"-, but open new socket for each
44d20bca UD	207	request */
2d0671cb	208	#define RES_USE_DNSSEC 0x00800000 /* use DNSSEC using OK bit in OPT */
f87dfb1f UD	209	#define RES_NOTLDQUERY 0x01000000 /* Do not look up unqualified name
f87dfb1f UD	210	as a TLD. */
28f540f4	211
0acb7b83	212	#define RES_DEFAULT (RES_RECURSE\|RES_DEFNAMES\|RES_DNSRCH\|RES_NOIP6DOTINT)
28f540f4 RM	213
	214	/*
	215	* Resolver "pfcode" values. Used by dig.
	216	*/
	217	#define RES_PRF_STATS 0x00000001
b43b13ac	218	#define RES_PRF_UPDATE 0x00000002
e685e07d	219	#define RES_PRF_CLASS 0x00000004
28f540f4 RM	220	#define RES_PRF_CMD 0x00000008
	221	#define RES_PRF_QUES 0x00000010
	222	#define RES_PRF_ANS 0x00000020
	223	#define RES_PRF_AUTH 0x00000040
	224	#define RES_PRF_ADD 0x00000080
	225	#define RES_PRF_HEAD1 0x00000100
	226	#define RES_PRF_HEAD2 0x00000200
	227	#define RES_PRF_TTLID 0x00000400
	228	#define RES_PRF_HEADX 0x00000800
	229	#define RES_PRF_QUERY 0x00001000
	230	#define RES_PRF_REPLY 0x00002000
b43b13ac	231	#define RES_PRF_INIT 0x00004000
28f540f4 RM	232	/* 0x00008000 */
28f540f4 RM	233
b43b13ac	234	/* Things involving an internal (static) resolver context. */
835bf8e0	235	__BEGIN_DECLS
f14273c5	236	extern struct __res_state *__res_state(void) __attribute__ ((__const__));
835bf8e0	237	__END_DECLS
e685e07d	238	#define _res (*__res_state())
fdacb17d	239
b43b13ac UD	240	#define fp_nquery __fp_nquery
	241	#define fp_query __fp_query
	242	#define hostalias __hostalias
	243	#define p_query __p_query
	244	#define res_close __res_close
e685e07d	245	#define res_init __res_init
b43b13ac	246	#define res_isourserver __res_isourserver
e685e07d UD	247	#define res_mkquery __res_mkquery
	248	#define res_query __res_query
	249	#define res_querydomain __res_querydomain
	250	#define res_search __res_search
b43b13ac	251	#define res_send __res_send
28f540f4	252
b43b13ac	253	__BEGIN_DECLS
11160cb7 ZW	254	void fp_nquery (const unsigned char , int, FILE ) __THROW;
11160cb7 ZW	255	void fp_query (const unsigned char , FILE ) __THROW;
79937577	256	const char * hostalias (const char *) __THROW;
11160cb7	257	void p_query (const unsigned char *) __THROW;
79937577 UD	258	void res_close (void) __THROW;
	259	int res_init (void) __THROW;
	260	int res_isourserver (const struct sockaddr_in *) __THROW;
11160cb7 ZW	261	int res_mkquery (int, const char *, int, int,
	262	const unsigned char , int, const unsigned char ,
	263	unsigned char *, int) __THROW;
	264	int res_query (const char , int, int, unsigned char , int)
	265	__THROW;
79937577	266	int res_querydomain (const char , const char , int, int,
11160cb7 ZW	267	unsigned char *, int) __THROW;
	268	int res_search (const char , int, int, unsigned char , int)
	269	__THROW;
	270	int res_send (const unsigned char , int, unsigned char , int)
	271	__THROW;
b43b13ac	272	__END_DECLS
df21c858	273
b43b13ac UD	274	#define b64_ntop __b64_ntop
	275	#define b64_pton __b64_pton
	276	#define dn_comp __dn_comp
	277	#define dn_count_labels __dn_count_labels
e685e07d	278	#define dn_expand __dn_expand
b43b13ac UD	279	#define dn_skipname __dn_skipname
	280	#define fp_resstat __fp_resstat
	281	#define loc_aton __loc_aton
	282	#define loc_ntoa __loc_ntoa
	283	#define p_cdname __p_cdname
	284	#define p_cdnname __p_cdnname
	285	#define p_class __p_class
	286	#define p_fqname __p_fqname
	287	#define p_fqnname __p_fqnname
	288	#define p_option __p_option
	289	#define p_secstodate __p_secstodate
	290	#define p_section __p_section
	291	#define p_time __p_time
	292	#define p_type __p_type
	293	#define p_rcode __p_rcode
	294	#define putlong __putlong
	295	#define putshort __putshort
	296	#define res_dnok __res_dnok
b43b13ac UD	297	#define res_hnok __res_hnok
	298	#define res_hostalias __res_hostalias
	299	#define res_mailok __res_mailok
	300	#define res_nameinquery __res_nameinquery
	301	#define res_nclose __res_nclose
	302	#define res_ninit __res_ninit
	303	#define res_nmkquery __res_nmkquery
	304	#define res_npquery __res_npquery
	305	#define res_nquery __res_nquery
	306	#define res_nquerydomain __res_nquerydomain
	307	#define res_nsearch __res_nsearch
	308	#define res_nsend __res_nsend
	309	#define res_nisourserver __res_nisourserver
	310	#define res_ownok __res_ownok
	311	#define res_queriesmatch __res_queriesmatch
	312	#define res_randomid __res_randomid
	313	#define sym_ntop __sym_ntop
	314	#define sym_ntos __sym_ntos
	315	#define sym_ston __sym_ston
28f540f4	316	__BEGIN_DECLS
79937577 UD	317	int res_hnok (const char *) __THROW;
	318	int res_ownok (const char *) __THROW;
	319	int res_mailok (const char *) __THROW;
	320	int res_dnok (const char *) __THROW;
	321	int sym_ston (const struct res_sym , const char , int *) __THROW;
	322	const char * sym_ntos (const struct res_sym , int, int ) __THROW;
	323	const char * sym_ntop (const struct res_sym , int, int ) __THROW;
11160cb7 ZW	324	int b64_ntop (const unsigned char , size_t, char , size_t)
	325	__THROW;
	326	int b64_pton (char const , unsigned char , size_t) __THROW;
	327	int loc_aton (const char __ascii, unsigned char __binary) __THROW;
	328	const char * loc_ntoa (const unsigned char __binary, char __ascii) __THROW;
	329	int dn_skipname (const unsigned char , const unsigned char )
	330	__THROW;
	331	void putlong (uint32_t, unsigned char *) __THROW;
	332	void putshort (uint16_t, unsigned char *) __THROW;
79937577	333	const char * p_class (int) __THROW;
11160cb7	334	const char * p_time (uint32_t) __THROW;
79937577 UD	335	const char * p_type (int) __THROW;
79937577 UD	336	const char * p_rcode (int) __THROW;
11160cb7 ZW	337	const unsigned char * p_cdnname (const unsigned char *,
	338	const unsigned char , int, FILE ) __THROW;
	339	const unsigned char * p_cdname (const unsigned char , const unsigned char ,
	340	FILE *) __THROW;
	341	const unsigned char * p_fqnname (const unsigned char *__cp,
	342	const unsigned char *__msg,
	343	int, char *, int) __THROW;
	344	const unsigned char * p_fqname (const unsigned char *,
	345	const unsigned char , FILE ) __THROW;
	346	const char * p_option (unsigned long __option) __THROW;
	347	char * p_secstodate (unsigned long) __THROW;
79937577	348	int dn_count_labels (const char *) __THROW;
11160cb7 ZW	349	int dn_comp (const char , unsigned char , int, unsigned char **,
	350	unsigned char **) __THROW;
	351	int dn_expand (const unsigned char , const unsigned char ,
	352	const unsigned char , char , int) __THROW;
	353	unsigned int res_randomid (void) __THROW;
79937577	354	int res_nameinquery (const char *, int, int,
11160cb7 ZW	355	const unsigned char *,
	356	const unsigned char *) __THROW;
	357	int res_queriesmatch (const unsigned char *,
	358	const unsigned char *,
	359	const unsigned char *,
	360	const unsigned char *) __THROW;
d82a27f8	361	const char * p_section (int __section, int __opcode) __THROW;
b43b13ac	362	/* Things involving a resolver context. */
79937577 UD	363	int res_ninit (res_state) __THROW;
	364	int res_nisourserver (const res_state,
	365	const struct sockaddr_in *) __THROW;
	366	void fp_resstat (const res_state, FILE *) __THROW;
11160cb7 ZW	367	void res_npquery (const res_state, const unsigned char *, int,
11160cb7 ZW	368	FILE *) __THROW;
79937577 UD	369	const char * res_hostalias (const res_state, const char , char , size_t)
79937577 UD	370	__THROW;
11160cb7 ZW	371	int res_nquery (res_state, const char *, int, int,
	372	unsigned char *, int) __THROW;
	373	int res_nsearch (res_state, const char *, int, int,
	374	unsigned char *, int) __THROW;
79937577	375	int res_nquerydomain (res_state, const char , const char , int,
11160cb7	376	int, unsigned char *, int) __THROW;
79937577	377	int res_nmkquery (res_state, int, const char *, int, int,
11160cb7 ZW	378	const unsigned char *, int,
11160cb7 ZW	379	const unsigned char , unsigned char , int)
79937577	380	__THROW;
11160cb7 ZW	381	int res_nsend (res_state, const unsigned char *, int,
11160cb7 ZW	382	unsigned char *, int) __THROW;
79937577	383	void res_nclose (res_state) __THROW;
28f540f4	384	__END_DECLS
535b764d	385	#endif
28f540f4	386
b43b13ac	387	#endif /* !_RESOLV_H_ */