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
56 #include
57 #include
58 #include
59 #include
60 #include
61 #include
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 * inital 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. */ 135 136 #define RES_DEFAULT (RES_RECURSE|RES_DEFNAMES|RES_DNSRCH) 137 138 /* 139 * Resolver "pfcode" values. Used by dig. 140 */ 141 #define RES_PRF_STATS 0x00000001 142 #define RES_PRF_UPDATE 0x00000002 143 #define RES_PRF_CLASS 0x00000004 144 #define RES_PRF_CMD 0x00000008 145 #define RES_PRF_QUES 0x00000010 146 #define RES_PRF_ANS 0x00000020 147 #define RES_PRF_AUTH 0x00000040 148 #define RES_PRF_ADD 0x00000080 149 #define RES_PRF_HEAD1 0x00000100 150 #define RES_PRF_HEAD2 0x00000200 151 #define RES_PRF_TTLID 0x00000400 152 #define RES_PRF_HEADX 0x00000800 153 #define RES_PRF_QUERY 0x00001000 154 #define RES_PRF_REPLY 0x00002000 155 #define RES_PRF_INIT 0x00004000 156 /* 0x00008000 */ 157 158 /* Things involving an internal (static) resolver context. */ 159 __BEGIN_DECLS 160 extern struct __res_state *__res_state(void) __attribute__ ((__const__)); 161 __END_DECLS 162 #define _res (*__res_state()) 163 164 #define fp_nquery __fp_nquery 165 #define fp_query __fp_query 166 #define hostalias __hostalias 167 #define p_query __p_query 168 #define res_close __res_close 169 #define res_init __res_init 170 #define res_isourserver __res_isourserver 171 172 #ifdef _LIBC 173 # define __RESOLV_DEPRECATED 174 # define __RESOLV_DEPRECATED_MSG(msg) 175 #else 176 # define __RESOLV_DEPRECATED __attribute_deprecated__ 177 # define __RESOLV_DEPRECATED_MSG(msg) __attribute_deprecated_msg__ (msg) 178 #endif 179 180 __BEGIN_DECLS 181 void fp_nquery (const unsigned char *, int, FILE *) __THROW 182 __RESOLV_DEPRECATED; 183 void fp_query (const unsigned char *, FILE *) __THROW 184 __RESOLV_DEPRECATED; 185 const char * hostalias (const char *) __THROW 186 __RESOLV_DEPRECATED_MSG ("use getaddrinfo instead"); 187 void p_query (const unsigned char *) __THROW 188 __RESOLV_DEPRECATED; 189 void res_close (void) __THROW; 190 int res_init (void) __THROW; 191 int res_isourserver (const struct sockaddr_in *) __THROW 192 __RESOLV_DEPRECATED; 193 int res_mkquery (int, const char *, int, int, 194 const unsigned char *, int, const unsigned char *, 195 unsigned char *, int) __THROW; 196 int res_query (const char *, int, int, unsigned char *, int) 197 __THROW; 198 int res_querydomain (const char *, const char *, int, int, 199 unsigned char *, int) __THROW; 200 int res_search (const char *, int, int, unsigned char *, int) 201 __THROW; 202 int res_send (const unsigned char *, int, unsigned char *, int) 203 __THROW; 204 __END_DECLS 205 206 #define b64_ntop __b64_ntop 207 #define b64_pton __b64_pton 208 #define dn_count_labels __dn_count_labels 209 #define fp_resstat __fp_resstat 210 #define loc_aton __loc_aton 211 #define loc_ntoa __loc_ntoa 212 #define p_cdname __p_cdname 213 #define p_cdnname __p_cdnname 214 #define p_class __p_class 215 #define p_fqname __p_fqname 216 #define p_fqnname __p_fqnname 217 #define p_option __p_option 218 #define p_time __p_time 219 #define p_type __p_type 220 #define p_rcode __p_rcode 221 #define putlong __putlong 222 #define putshort __putshort 223 #define res_hostalias __res_hostalias 224 #define res_nameinquery __res_nameinquery 225 #define res_nclose __res_nclose 226 #define res_ninit __res_ninit 227 #define res_queriesmatch __res_queriesmatch 228 #define res_randomid __res_randomid 229 #define sym_ntop __sym_ntop 230 #define sym_ntos __sym_ntos 231 #define sym_ston __sym_ston 232 __BEGIN_DECLS 233 int res_hnok (const char *) __THROW; 234 int res_ownok (const char *) __THROW; 235 int res_mailok (const char *) __THROW; 236 int res_dnok (const char *) __THROW; 237 int sym_ston (const struct res_sym *, const char *, int *) __THROW 238 __RESOLV_DEPRECATED; 239 const char * sym_ntos (const struct res_sym *, int, int *) __THROW 240 __RESOLV_DEPRECATED; 241 const char * sym_ntop (const struct res_sym *, int, int *) __THROW 242 __RESOLV_DEPRECATED; 243 int b64_ntop (const unsigned char *, size_t, char *, size_t) 244 __THROW; 245 int b64_pton (char const *, unsigned char *, size_t) __THROW; 246 int loc_aton (const char *__ascii, unsigned char *__binary) __THROW 247 __RESOLV_DEPRECATED; 248 const char * loc_ntoa (const unsigned char *__binary, char *__ascii) __THROW 249 __RESOLV_DEPRECATED; 250 int dn_skipname (const unsigned char *, const unsigned char *) 251 __THROW; 252 void putlong (uint32_t, unsigned char *) __THROW 253 __RESOLV_DEPRECATED_MSG ("use NS_PUT16 instead"); 254 void putshort (uint16_t, unsigned char *) __THROW 255 __RESOLV_DEPRECATED_MSG ("use NS_PUT32 instead"); 256 const char * p_class (int) __THROW __RESOLV_DEPRECATED; 257 const char * p_time (uint32_t) __THROW __RESOLV_DEPRECATED; 258 const char * p_type (int) __THROW __RESOLV_DEPRECATED; 259 const char * p_rcode (int) __THROW __RESOLV_DEPRECATED; 260 const unsigned char * p_cdnname (const unsigned char *, const unsigned char *, 261 int, FILE *) __THROW __RESOLV_DEPRECATED; 262 const unsigned char * p_cdname (const unsigned char *, const unsigned char *, 263 FILE *) __THROW __RESOLV_DEPRECATED; 264 const unsigned char * p_fqnname (const unsigned char *__cp, 265 const unsigned char *__msg, 266 int, char *, int) __THROW __RESOLV_DEPRECATED; 267 const unsigned char * p_fqname (const unsigned char *, const unsigned char *, 268 FILE *) __THROW __RESOLV_DEPRECATED; 269 const char * p_option (unsigned long __option) __THROW __RESOLV_DEPRECATED; 270 int dn_count_labels (const char *) __THROW __RESOLV_DEPRECATED; 271 int dn_comp (const char *, unsigned char *, int, unsigned char **, 272 unsigned char **) __THROW; 273 int dn_expand (const unsigned char *, const unsigned char *, 274 const unsigned char *, char *, int) __THROW; 275 unsigned int res_randomid (void) __THROW 276 __RESOLV_DEPRECATED_MSG ("use getentropy instead"); 277 int res_nameinquery (const char *, int, int, 278 const unsigned char *, 279 const unsigned char *) __THROW 280 __RESOLV_DEPRECATED; 281 int res_queriesmatch (const unsigned char *, 282 const unsigned char *, 283 const unsigned char *, 284 const unsigned char *) __THROW 285 __RESOLV_DEPRECATED; 286 /* Things involving a resolver context. */ 287 int res_ninit (res_state) __THROW; 288 void fp_resstat (const res_state, FILE *) __THROW 289 __RESOLV_DEPRECATED; 290 const char * res_hostalias (const res_state, const char *, char *, size_t) 291 __THROW __RESOLV_DEPRECATED_MSG ("use getaddrinfo instead"); 292 int res_nquery (res_state, const char *, int, int, 293 unsigned char *, int) __THROW; 294 int res_nsearch (res_state, const char *, int, int, 295 unsigned char *, int) __THROW; 296 int res_nquerydomain (res_state, const char *, const char *, int, 297 int, unsigned char *, int) __THROW; 298 int res_nmkquery (res_state, int, const char *, int, int, 299 const unsigned char *, int, 300 const unsigned char *, unsigned char *, int) 301 __THROW; 302 int res_nsend (res_state, const unsigned char *, int, 303 unsigned char *, int) __THROW; 304 void res_nclose (res_state) __THROW; 305 306 __END_DECLS 307 308 #endif /* !_RESOLV_H_ */
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