The C and C++ Include Header Files

/usr/include/resolv.h


$ cat -n /usr/include/resolv.h

     1	/*
     2	 * Copyright (c) 1983, 1987, 1989
     3	 *    The Regents of the University of California.  All rights reserved.
     4	 *
     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.
    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.
    16	 *
    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.
    28	 */
    29	
    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	
    47	/*
    48	 *	@(#)resolv.h	8.1 (Berkeley) 6/2/93
    49	 *	$BINDId: resolv.h,v 8.31 2000/03/30 20:16:50 vixie Exp $
    50	 */
    51	
    52	#ifndef _RESOLV_H_
    53	#define _RESOLV_H_
    54	
    55	#include <sys/cdefs.h>
    56	#include <sys/param.h>
    57	#include <sys/types.h>
    58	#include <stdio.h>
    59	#include <netinet/in.h>
    60	#include <arpa/nameser.h>
    61	#include <bits/types/res_state.h>
    62	
    63	/*
    64	 * Global defines and variables for resolver stub.
    65	 */
    66	#define LOCALDOMAINPARTS	2	/* min levels in name that is "local" */
    67	
    68	#define RES_TIMEOUT		5	/* min. seconds between retries */
    69	#define RES_MAXNDOTS		15	/* should reflect bit field size */
    70	#define RES_MAXRETRANS		30	/* only for resolv.conf/RES_OPTIONS */
    71	#define RES_MAXRETRY		5	/* only for resolv.conf/RES_OPTIONS */
    72	#define RES_DFLRETRY		2	/* Default #/tries. */
    73	#define RES_MAXTIME		65535	/* Infinity, in milliseconds. */
    74	
    75	#define nsaddr	nsaddr_list[0]		/* for backward compatibility */
    76	
    77	/*
    78	 * Revision information.  This is the release date in YYYYMMDD format.
    79	 * It can change every day so the right thing to do with it is use it
    80	 * in preprocessor commands such as "#if (__RES > 19931104)".  Do not
    81	 * compare for equality; rather, use it to determine whether your resolver
    82	 * is new enough to contain a certain feature.
    83	 */
    84	
    85	#define	__RES	19991006
    86	
    87	/*
    88	 * Resolver configuration file.
    89	 * Normally not present, but may contain the address of the
    90	 * initial name server(s) to query and the domain search list.
    91	 */
    92	
    93	#ifndef _PATH_RESCONF
    94	#define _PATH_RESCONF        "/etc/resolv.conf"
    95	#endif
    96	
    97	struct res_sym {
    98		int	number;		/* Identifying number, like T_MX */
    99		char *	name;		/* Its symbolic name, like "MX" */
   100		char *	humanname;	/* Its fun name, like "mail exchanger" */
   101	};
   102	
   103	/*
   104	 * Resolver options (keep these in synch with res_debug.c, please)
   105	 */
   106	#define RES_INIT	0x00000001	/* address initialized */
   107	#define RES_DEBUG	0x00000002	/* print debug messages */
   108	#define RES_AAONLY \
   109	  __glibc_macro_warning ("RES_AAONLY is deprecated") 0x00000004
   110	#define RES_USEVC	0x00000008	/* use virtual circuit */
   111	#define RES_PRIMARY \
   112	  __glibc_macro_warning ("RES_PRIMARY is deprecated") 0x00000010
   113	#define RES_IGNTC	0x00000020	/* ignore trucation errors */
   114	#define RES_RECURSE	0x00000040	/* recursion desired */
   115	#define RES_DEFNAMES	0x00000080	/* use default domain name */
   116	#define RES_STAYOPEN	0x00000100	/* Keep TCP socket open */
   117	#define RES_DNSRCH	0x00000200	/* search up local domain tree */
   118	#define	RES_NOALIASES	0x00001000	/* shuts off HOSTALIASES feature */
   119	#define RES_ROTATE	0x00004000	/* rotate ns list after each query */
   120	#define	RES_NOCHECKNAME \
   121	  __glibc_macro_warning ("RES_NOCHECKNAME is deprecated") 0x00008000
   122	#define	RES_KEEPTSIG \
   123	  __glibc_macro_warning ("RES_KEEPTSIG is deprecated") 0x00010000
   124	#define	RES_BLAST \
   125	  __glibc_macro_warning ("RES_BLAST is deprecated") 0x00020000
   126	#define RES_USE_EDNS0	0x00100000	/* Use EDNS0.  */
   127	#define RES_SNGLKUP	0x00200000	/* one outstanding request at a time */
   128	#define RES_SNGLKUPREOP	0x00400000	/* -"-, but open new socket for each
   129						   request */
   130	#define RES_USE_DNSSEC	0x00800000	/* use DNSSEC using OK bit in OPT */
   131	#define RES_NOTLDQUERY	0x01000000	/* Do not look up unqualified name
   132						   as a TLD.  */
   133	#define RES_NORELOAD    0x02000000 /* No automatic configuration reload.  */
   134	#define RES_TRUSTAD     0x04000000 /* Request AD bit, keep it in responses.  */
   135	#define RES_NOAAAA      0x08000000 /* Suppress AAAA queries.  */
   136	
   137	#define RES_DEFAULT	(RES_RECURSE|RES_DEFNAMES|RES_DNSRCH)
   138	
   139	/*
   140	 * Resolver "pfcode" values.  Used by dig.
   141	 */
   142	#define RES_PRF_STATS	0x00000001
   143	#define RES_PRF_UPDATE	0x00000002
   144	#define RES_PRF_CLASS   0x00000004
   145	#define RES_PRF_CMD	0x00000008
   146	#define RES_PRF_QUES	0x00000010
   147	#define RES_PRF_ANS	0x00000020
   148	#define RES_PRF_AUTH	0x00000040
   149	#define RES_PRF_ADD	0x00000080
   150	#define RES_PRF_HEAD1	0x00000100
   151	#define RES_PRF_HEAD2	0x00000200
   152	#define RES_PRF_TTLID	0x00000400
   153	#define RES_PRF_HEADX	0x00000800
   154	#define RES_PRF_QUERY	0x00001000
   155	#define RES_PRF_REPLY	0x00002000
   156	#define RES_PRF_INIT	0x00004000
   157	/*			0x00008000	*/
   158	
   159	/* Things involving an internal (static) resolver context. */
   160	__BEGIN_DECLS
   161	extern struct __res_state *__res_state(void) __attribute__ ((__const__));
   162	__END_DECLS
   163	#define _res (*__res_state())
   164	
   165	#define fp_nquery		__fp_nquery
   166	#define fp_query		__fp_query
   167	#define hostalias		__hostalias
   168	#define p_query			__p_query
   169	#define res_close		__res_close
   170	#define res_init		__res_init
   171	#define res_isourserver		__res_isourserver
   172	
   173	#ifdef _LIBC
   174	# define __RESOLV_DEPRECATED
   175	# define __RESOLV_DEPRECATED_MSG(msg)
   176	#else
   177	# define __RESOLV_DEPRECATED __attribute_deprecated__
   178	# define __RESOLV_DEPRECATED_MSG(msg) __attribute_deprecated_msg__ (msg)
   179	#endif
   180	
   181	__BEGIN_DECLS
   182	void		fp_nquery (const unsigned char *, int, FILE *) __THROW
   183	  __RESOLV_DEPRECATED;
   184	void		fp_query (const unsigned char *, FILE *) __THROW
   185	  __RESOLV_DEPRECATED;
   186	const char *	hostalias (const char *) __THROW
   187	  __RESOLV_DEPRECATED_MSG ("use getaddrinfo instead");
   188	void		p_query (const unsigned char *) __THROW
   189	  __RESOLV_DEPRECATED;
   190	void		res_close (void) __THROW;
   191	int		res_init (void) __THROW;
   192	int		res_isourserver (const struct sockaddr_in *) __THROW
   193	  __RESOLV_DEPRECATED;
   194	int		res_mkquery (int, const char *, int, int,
   195				     const unsigned char *, int, const unsigned char *,
   196				     unsigned char *, int) __THROW;
   197	int		res_query (const char *, int, int, unsigned char *, int)
   198	     __THROW;
   199	int		res_querydomain (const char *, const char *, int, int,
   200					 unsigned char *, int) __THROW;
   201	int		res_search (const char *, int, int, unsigned char *, int)
   202	     __THROW;
   203	int		res_send (const unsigned char *, int, unsigned char *, int)
   204	     __THROW;
   205	__END_DECLS
   206	
   207	#define b64_ntop		__b64_ntop
   208	#define b64_pton		__b64_pton
   209	#define dn_count_labels		__dn_count_labels
   210	#define fp_resstat		__fp_resstat
   211	#define loc_aton		__loc_aton
   212	#define loc_ntoa		__loc_ntoa
   213	#define p_cdname		__p_cdname
   214	#define p_cdnname		__p_cdnname
   215	#define p_class			__p_class
   216	#define p_fqname		__p_fqname
   217	#define p_fqnname		__p_fqnname
   218	#define p_option		__p_option
   219	#define p_time			__p_time
   220	#define p_type			__p_type
   221	#define p_rcode			__p_rcode
   222	#define putlong			__putlong
   223	#define putshort		__putshort
   224	#define res_hostalias		__res_hostalias
   225	#define res_nameinquery		__res_nameinquery
   226	#define res_nclose		__res_nclose
   227	#define res_ninit		__res_ninit
   228	#define res_queriesmatch	__res_queriesmatch
   229	#define res_randomid		__res_randomid
   230	#define sym_ntop		__sym_ntop
   231	#define sym_ntos		__sym_ntos
   232	#define sym_ston		__sym_ston
   233	__BEGIN_DECLS
   234	int		res_hnok (const char *) __THROW;
   235	int		res_ownok (const char *) __THROW;
   236	int		res_mailok (const char *) __THROW;
   237	int		res_dnok (const char *) __THROW;
   238	int		sym_ston (const struct res_sym *, const char *, int *) __THROW
   239	  __RESOLV_DEPRECATED;
   240	const char *	sym_ntos (const struct res_sym *, int, int *) __THROW
   241	  __RESOLV_DEPRECATED;
   242	const char *	sym_ntop (const struct res_sym *, int, int *) __THROW
   243	  __RESOLV_DEPRECATED;
   244	int		b64_ntop (const unsigned char *, size_t, char *, size_t)
   245	  __THROW;
   246	int		b64_pton (char const *, unsigned char *, size_t) __THROW;
   247	int		loc_aton (const char *__ascii, unsigned char *__binary) __THROW
   248	  __RESOLV_DEPRECATED;
   249	const char *	loc_ntoa (const unsigned char *__binary, char *__ascii) __THROW
   250	  __RESOLV_DEPRECATED;
   251	int		dn_skipname (const unsigned char *, const unsigned char *)
   252	  __THROW;
   253	void		putlong (uint32_t, unsigned char *) __THROW
   254	  __RESOLV_DEPRECATED_MSG ("use NS_PUT16 instead");
   255	void		putshort (uint16_t, unsigned char *) __THROW
   256	  __RESOLV_DEPRECATED_MSG ("use NS_PUT32 instead");
   257	const char *	p_class (int) __THROW __RESOLV_DEPRECATED;
   258	const char *	p_time (uint32_t) __THROW __RESOLV_DEPRECATED;
   259	const char *	p_type (int) __THROW __RESOLV_DEPRECATED;
   260	const char *	p_rcode (int) __THROW __RESOLV_DEPRECATED;
   261	const unsigned char * p_cdnname (const unsigned char *, const unsigned char *,
   262					 int, FILE *) __THROW __RESOLV_DEPRECATED;
   263	const unsigned char * p_cdname (const unsigned char *, const unsigned char *,
   264					FILE *) __THROW __RESOLV_DEPRECATED;
   265	const unsigned char * p_fqnname (const unsigned char *__cp,
   266					 const unsigned char *__msg,
   267					 int, char *, int) __THROW __RESOLV_DEPRECATED;
   268	const unsigned char * p_fqname (const unsigned char *, const unsigned char *,
   269					FILE *) __THROW __RESOLV_DEPRECATED;
   270	const char *	p_option (unsigned long __option) __THROW __RESOLV_DEPRECATED;
   271	int		dn_count_labels (const char *) __THROW __RESOLV_DEPRECATED;
   272	int		dn_comp (const char *, unsigned char *, int, unsigned char **,
   273				 unsigned char **) __THROW;
   274	int		dn_expand (const unsigned char *, const unsigned char *,
   275				   const unsigned char *, char *, int) __THROW;
   276	unsigned int	res_randomid (void) __THROW
   277	  __RESOLV_DEPRECATED_MSG ("use getentropy instead");
   278	int		res_nameinquery (const char *, int, int,
   279					 const unsigned char *,
   280					 const unsigned char *) __THROW
   281	  __RESOLV_DEPRECATED;
   282	int		res_queriesmatch (const unsigned char *,
   283					  const unsigned char *,
   284					  const unsigned char *,
   285					  const unsigned char *) __THROW
   286	  __RESOLV_DEPRECATED;
   287	/* Things involving a resolver context. */
   288	int		res_ninit (res_state) __THROW;
   289	void		fp_resstat (const res_state, FILE *) __THROW
   290	  __RESOLV_DEPRECATED;
   291	const char *	res_hostalias (const res_state, const char *, char *, size_t)
   292	     __THROW __RESOLV_DEPRECATED_MSG ("use getaddrinfo instead");
   293	int		res_nquery (res_state, const char *, int, int,
   294				    unsigned char *, int) __THROW;
   295	int		res_nsearch (res_state, const char *, int, int,
   296				     unsigned char *, int) __THROW;
   297	int		res_nquerydomain (res_state, const char *, const char *, int,
   298					  int, unsigned char *, int) __THROW;
   299	int		res_nmkquery (res_state, int, const char *, int, int,
   300				      const unsigned char *, int,
   301				      const unsigned char *, unsigned char *, int)
   302	     __THROW;
   303	int		res_nsend (res_state, const unsigned char *, int,
   304				   unsigned char *, int) __THROW;
   305	void		res_nclose (res_state) __THROW;
   306	
   307	__END_DECLS
   308	
   309	#endif /* !_RESOLV_H_ */