1 /* $NetBSD: resolv.h,v 1.31 2005/12/26 19:01:47 perry Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1987, 1989 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") 34 * Portions Copyright (c) 1996-1999 by Internet Software Consortium. 35 * 36 * Permission to use, copy, modify, and distribute this software for any 37 * purpose with or without fee is hereby granted, provided that the above 38 * copyright notice and this permission notice appear in all copies. 39 * 40 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES 41 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 42 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR 43 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 44 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 45 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 46 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 47 */ 48 49 /* 50 * @(#)resolv.h 8.1 (Berkeley) 6/2/93 51 * Id: resolv.h,v 1.7.2.11.4.2 2004/06/25 00:41:05 marka Exp 52 */ 53 54 #ifndef _RESOLV_PRIVATE_H_ 55 #define _RESOLV_PRIVATE_H_ 56 57 #include <sys/cdefs.h> 58 59 #include <resolv.h> 60 #include "resolv_static.h" 61 #include "resolv_params.h" 62 #include "resolv_stats.h" 63 #include <net/if.h> 64 #include <time.h> 65 66 // Linux defines MAXHOSTNAMELEN as 64, while the domain name limit in 67 // RFC 1034 and RFC 1035 is 255 octets. 68 #ifdef MAXHOSTNAMELEN 69 #undef MAXHOSTNAMELEN 70 #endif 71 #define MAXHOSTNAMELEN 256 72 73 /* 74 * Revision information. This is the release date in YYYYMMDD format. 75 * It can change every day so the right thing to do with it is use it 76 * in preprocessor commands such as "#if (__RES > 19931104)". Do not 77 * compare for equality; rather, use it to determine whether your resolver 78 * is new enough to contain a certain feature. 79 */ 80 81 #define __RES 20030124 82 83 /* 84 * This used to be defined in res_query.c, now it's in herror.c. 85 * [XXX no it's not. It's in irs/irs_data.c] 86 * It was 87 * never extern'd by any *.h file before it was placed here. For thread 88 * aware programs, the last h_errno value set is stored in res->h_errno. 89 * 90 * XXX: There doesn't seem to be a good reason for exposing RES_SET_H_ERRNO 91 * (and __h_errno_set) to the public via <resolv.h>. 92 * XXX: __h_errno_set is really part of IRS, not part of the resolver. 93 * If somebody wants to build and use a resolver that doesn't use IRS, 94 * what do they do? Perhaps something like 95 * #ifdef WANT_IRS 96 * # define RES_SET_H_ERRNO(r,x) __h_errno_set(r,x) 97 * #else 98 * # define RES_SET_H_ERRNO(r,x) (h_errno = (r)->res_h_errno = (x)) 99 * #endif 100 */ 101 102 #define RES_SET_H_ERRNO(r,x) (h_errno = (r)->res_h_errno = (x)) 103 struct __res_state; /* forward */ 104 105 /* 106 * Resolver configuration file. 107 * Normally not present, but may contain the address of the 108 * initial name server(s) to query and the domain search list. 109 */ 110 111 #ifndef _PATH_RESCONF 112 #ifdef ANDROID_CHANGES 113 #define _PATH_RESCONF "/etc/ppp/resolv.conf" 114 #else 115 #define _PATH_RESCONF "/etc/resolv.conf" 116 #endif 117 #endif 118 119 typedef enum { res_goahead, res_nextns, res_modified, res_done, res_error } 120 res_sendhookact; 121 122 typedef res_sendhookact (*res_send_qhook)(struct sockaddr * const *, 123 const u_char **, int *, 124 u_char *, int, int *); 125 126 typedef res_sendhookact (*res_send_rhook)(const struct sockaddr *, 127 const u_char *, int, u_char *, 128 int, int *); 129 130 struct res_sym { 131 int number; /* Identifying number, like T_MX */ 132 const char * name; /* Its symbolic name, like "MX" */ 133 const char * humanname; /* Its fun name, like "mail exchanger" */ 134 }; 135 136 /* 137 * Global defines and variables for resolver stub. 138 */ 139 #define MAXDFLSRCH 3 /* # default domain levels to try */ 140 #define LOCALDOMAINPARTS 2 /* min levels in name that is "local" */ 141 142 #define RES_TIMEOUT 5 /* min. seconds between retries */ 143 #define MAXRESOLVSORT 10 /* number of net to sort on */ 144 #define RES_MAXNDOTS 15 /* should reflect bit field size */ 145 #define RES_MAXRETRANS 30 /* only for resolv.conf/RES_OPTIONS */ 146 #define RES_MAXRETRY 5 /* only for resolv.conf/RES_OPTIONS */ 147 #define RES_DFLRETRY 2 /* Default #/tries. */ 148 #define RES_MAXTIME 65535 /* Infinity, in milliseconds. */ 149 150 struct __res_state_ext; 151 152 struct __res_state { 153 unsigned netid; /* NetId: cache key and socket mark */ 154 int retrans; /* retransmission time interval */ 155 int retry; /* number of times to retransmit */ 156 #ifdef sun 157 u_int options; /* option flags - see below. */ 158 #else 159 u_long options; /* option flags - see below. */ 160 #endif 161 int nscount; /* number of name servers */ 162 struct sockaddr_in 163 nsaddr_list[MAXNS]; /* address of name server */ 164 #define nsaddr nsaddr_list[0] /* for backward compatibility */ 165 u_short id; /* current message id */ 166 char *dnsrch[MAXDNSRCH+1]; /* components of domain to search */ 167 char defdname[256]; /* default domain (deprecated) */ 168 #ifdef sun 169 u_int pfcode; /* RES_PRF_ flags - see below. */ 170 #else 171 u_long pfcode; /* RES_PRF_ flags - see below. */ 172 #endif 173 unsigned ndots:4; /* threshold for initial abs. query */ 174 unsigned nsort:4; /* number of elements in sort_list[] */ 175 char unused[3]; 176 struct { 177 struct in_addr addr; 178 uint32_t mask; 179 } sort_list[MAXRESOLVSORT]; 180 #ifdef __OLD_RES_STATE 181 char lookups[4]; 182 #else 183 res_send_qhook qhook; /* query hook */ 184 res_send_rhook rhook; /* response hook */ 185 int res_h_errno; /* last one set for this context */ 186 unsigned _mark; /* If non-0 SET_MARK to _mark on all request sockets */ 187 int _vcsock; /* PRIVATE: for res_send VC i/o */ 188 u_int _flags; /* PRIVATE: see below */ 189 u_int _pad; /* make _u 64 bit aligned */ 190 union { 191 /* On an 32-bit arch this means 512b total. */ 192 char pad[72 - 4*sizeof (int) - 2*sizeof (void *)]; 193 struct { 194 uint16_t nscount; 195 uint16_t nstimes[MAXNS]; /* ms. */ 196 int nssocks[MAXNS]; 197 struct __res_state_ext *ext; /* extention for IPv6 */ 198 } _ext; 199 } _u; 200 #endif 201 struct res_static rstatic[1]; 202 }; 203 204 typedef struct __res_state *res_state; 205 206 /* Retrieve a local copy of the stats for the given netid. The buffer must have space for 207 * MAXNS __resolver_stats. Returns the revision id of the resolvers used. 208 */ 209 __LIBC_HIDDEN__ 210 extern int 211 _resolv_cache_get_resolver_stats( unsigned netid, struct __res_params* params, 212 struct __res_stats stats[MAXNS]); 213 214 /* Add a sample to the shared struct for the given netid and server, provided that the 215 * revision_id of the stored servers has not changed. 216 */ 217 __LIBC_HIDDEN__ 218 extern void 219 _resolv_cache_add_resolver_stats_sample( unsigned netid, int revision_id, int ns, 220 const struct __res_sample* sample, int max_samples); 221 222 /* End of stats related definitions */ 223 224 union res_sockaddr_union { 225 struct sockaddr_in sin; 226 #ifdef IN6ADDR_ANY_INIT 227 struct sockaddr_in6 sin6; 228 #endif 229 #ifdef ISC_ALIGN64 230 int64_t __align64; /* 64bit alignment */ 231 #else 232 int32_t __align32; /* 32bit alignment */ 233 #endif 234 char __space[128]; /* max size */ 235 }; 236 237 /* 238 * Resolver flags (used to be discrete per-module statics ints). 239 */ 240 #define RES_F_VC 0x00000001 /* socket is TCP */ 241 #define RES_F_CONN 0x00000002 /* socket is connected */ 242 #define RES_F_EDNS0ERR 0x00000004 /* EDNS0 caused errors */ 243 #define RES_F__UNUSED 0x00000008 /* (unused) */ 244 #define RES_F_LASTMASK 0x000000F0 /* ordinal server of last res_nsend */ 245 #define RES_F_LASTSHIFT 4 /* bit position of LASTMASK "flag" */ 246 #define RES_GETLAST(res) (((res)._flags & RES_F_LASTMASK) >> RES_F_LASTSHIFT) 247 248 /* res_findzonecut2() options */ 249 #define RES_EXHAUSTIVE 0x00000001 /* always do all queries */ 250 #define RES_IPV4ONLY 0x00000002 /* IPv4 only */ 251 #define RES_IPV6ONLY 0x00000004 /* IPv6 only */ 252 253 /* 254 * Resolver options (keep these in synch with res_debug.c, please) 255 */ 256 #define RES_INIT 0x00000001 /* address initialized */ 257 #define RES_DEBUG 0x00000002 /* print debug messages */ 258 #define RES_AAONLY 0x00000004 /* authoritative answers only (!IMPL)*/ 259 #define RES_USEVC 0x00000008 /* use virtual circuit */ 260 #define RES_PRIMARY 0x00000010 /* query primary server only (!IMPL) */ 261 #define RES_IGNTC 0x00000020 /* ignore trucation errors */ 262 #define RES_RECURSE 0x00000040 /* recursion desired */ 263 #define RES_DEFNAMES 0x00000080 /* use default domain name */ 264 #define RES_STAYOPEN 0x00000100 /* Keep TCP socket open */ 265 #define RES_DNSRCH 0x00000200 /* search up local domain tree */ 266 #define RES_INSECURE1 0x00000400 /* type 1 security disabled */ 267 #define RES_INSECURE2 0x00000800 /* type 2 security disabled */ 268 #define RES_NOALIASES 0x00001000 /* shuts off HOSTALIASES feature */ 269 #define RES_USE_INET6 0x00002000 /* use/map IPv6 in gethostbyname() */ 270 #define RES_ROTATE 0x00004000 /* rotate ns list after each query */ 271 #define RES_NOCHECKNAME 0x00008000 /* do not check names for sanity. */ 272 #define RES_KEEPTSIG 0x00010000 /* do not strip TSIG records */ 273 #define RES_BLAST 0x00020000 /* blast all recursive servers */ 274 #define RES_NOTLDQUERY 0x00100000 /* don't unqualified name as a tld */ 275 #define RES_USE_DNSSEC 0x00200000 /* use DNSSEC using OK bit in OPT */ 276 /* #define RES_DEBUG2 0x00400000 */ /* nslookup internal */ 277 /* KAME extensions: use higher bit to avoid conflict with ISC use */ 278 #define RES_USE_DNAME 0x10000000 /* use DNAME */ 279 #define RES_USE_EDNS0 0x40000000 /* use EDNS0 if configured */ 280 #define RES_NO_NIBBLE2 0x80000000 /* disable alternate nibble lookup */ 281 282 #define RES_DEFAULT (RES_RECURSE | RES_DEFNAMES | \ 283 RES_DNSRCH | RES_NO_NIBBLE2) 284 285 /* 286 * Resolver "pfcode" values. Used by dig. 287 */ 288 #define RES_PRF_STATS 0x00000001 289 #define RES_PRF_UPDATE 0x00000002 290 #define RES_PRF_CLASS 0x00000004 291 #define RES_PRF_CMD 0x00000008 292 #define RES_PRF_QUES 0x00000010 293 #define RES_PRF_ANS 0x00000020 294 #define RES_PRF_AUTH 0x00000040 295 #define RES_PRF_ADD 0x00000080 296 #define RES_PRF_HEAD1 0x00000100 297 #define RES_PRF_HEAD2 0x00000200 298 #define RES_PRF_TTLID 0x00000400 299 #define RES_PRF_HEADX 0x00000800 300 #define RES_PRF_QUERY 0x00001000 301 #define RES_PRF_REPLY 0x00002000 302 #define RES_PRF_INIT 0x00004000 303 #define RES_PRF_TRUNC 0x00008000 304 /* 0x00010000 */ 305 306 /* Things involving an internal (static) resolver context. */ 307 __BEGIN_DECLS 308 309 __LIBC_HIDDEN__ extern struct __res_state *__res_get_state(void); 310 __LIBC_HIDDEN__ extern void __res_put_state(struct __res_state *); 311 312 #ifndef ANDROID_CHANGES 313 /* 314 * Source and Binary compatibility; _res will not work properly 315 * with multi-threaded programs. 316 */ 317 extern struct __res_state *__res_state(void); 318 #define _res (*__res_state()) 319 #endif 320 321 __END_DECLS 322 323 #ifndef __BIND_NOSTATIC 324 #define fp_nquery __fp_nquery 325 #define fp_query __fp_query 326 #define hostalias __hostalias 327 #define p_query __p_query 328 #define res_close __res_close 329 #define res_opt __res_opt 330 #define res_isourserver __res_isourserver 331 #define res_querydomain __res_querydomain 332 #define res_send __res_send 333 #define res_sendsigned __res_sendsigned 334 335 #ifdef BIND_RES_POSIX3 336 #define dn_expand __dn_expand 337 #define res_init __res_init 338 #define res_query __res_query 339 #define res_search __res_search 340 #define res_mkquery __res_mkquery 341 #endif 342 343 __BEGIN_DECLS 344 void fp_nquery(const u_char *, int, FILE *); 345 void fp_query(const u_char *, FILE *); 346 const char * hostalias(const char *); 347 void p_query(const u_char *); 348 void res_close(void); 349 int res_init(void); 350 __LIBC_HIDDEN__ int res_opt(int, u_char *, int, int); 351 int res_isourserver(const struct sockaddr_in *); 352 int res_mkquery(int, const char *, int, int, const u_char *, int, const u_char *, u_char *, int); 353 int res_query(const char *, int, int, u_char *, int); 354 int res_querydomain(const char *, const char *, int, int, u_char *, int); 355 int res_search(const char *, int, int, u_char *, int); 356 int res_send(const u_char *, int, u_char *, int); 357 int res_sendsigned(const u_char *, int, ns_tsig_key *, u_char *, int); 358 __END_DECLS 359 #endif 360 361 #if !defined(SHARED_LIBBIND) || defined(LIB) 362 /* 363 * If libbind is a shared object (well, DLL anyway) 364 * these externs break the linker when resolv.h is 365 * included by a lib client (like named) 366 * Make them go away if a client is including this 367 * 368 */ 369 __LIBC_HIDDEN__ extern const struct res_sym __p_key_syms[]; 370 __LIBC_HIDDEN__ extern const struct res_sym __p_cert_syms[]; 371 extern const struct res_sym __p_class_syms[]; 372 extern const struct res_sym __p_type_syms[]; 373 __LIBC_HIDDEN__ extern const struct res_sym __p_rcode_syms[]; 374 #endif /* SHARED_LIBBIND */ 375 376 #ifndef ANDROID_CHANGES 377 #define dn_comp __dn_comp 378 #endif 379 #define dn_count_labels __dn_count_labels 380 #define dn_skipname __dn_skipname 381 #define fp_resstat __fp_resstat 382 #define loc_aton __loc_aton 383 #define loc_ntoa __loc_ntoa 384 #define p_cdname __p_cdname 385 #define p_cdnname __p_cdnname 386 #define p_class __p_class 387 #define p_fqname __p_fqname 388 #define p_fqnname __p_fqnname 389 #define p_option __p_option 390 #define p_secstodate __p_secstodate 391 #define p_section __p_section 392 #define p_time __p_time 393 #define p_type __p_type 394 #define p_rcode __p_rcode 395 #define p_sockun __p_sockun 396 #define putlong __putlong 397 #define putshort __putshort 398 #define res_dnok __res_dnok 399 #define res_findzonecut __res_findzonecut 400 #define res_findzonecut2 __res_findzonecut2 401 #define res_hnok __res_hnok 402 #define res_hostalias __res_hostalias 403 #define res_mailok __res_mailok 404 #define res_nameinquery __res_nameinquery 405 #define res_nclose __res_nclose 406 #define res_ninit __res_ninit 407 #define res_nmkquery __res_nmkquery 408 #define res_pquery __res_pquery 409 #define res_nquery __res_nquery 410 #define res_nquerydomain __res_nquerydomain 411 #define res_nsearch __res_nsearch 412 #define res_nsend __res_nsend 413 #define res_nsendsigned __res_nsendsigned 414 #define res_nisourserver __res_nisourserver 415 #define res_ownok __res_ownok 416 #define res_queriesmatch __res_queriesmatch 417 #define sym_ntop __sym_ntop 418 #define sym_ntos __sym_ntos 419 #define sym_ston __sym_ston 420 #define res_nopt __res_nopt 421 #define res_ndestroy __res_ndestroy 422 #define res_nametoclass __res_nametoclass 423 #define res_nametotype __res_nametotype 424 #define res_setservers __res_setservers 425 #define res_getservers __res_getservers 426 #define res_buildprotolist __res_buildprotolist 427 #define res_destroyprotolist __res_destroyprotolist 428 #define res_destroyservicelist __res_destroyservicelist 429 #define res_get_nibblesuffix __res_get_nibblesuffix 430 #define res_get_nibblesuffix2 __res_get_nibblesuffix2 431 #define res_ourserver_p __res_ourserver_p 432 #define res_protocolname __res_protocolname 433 #define res_protocolnumber __res_protocolnumber 434 #define res_send_setqhook __res_send_setqhook 435 #define res_send_setrhook __res_send_setrhook 436 #define res_servicename __res_servicename 437 #define res_servicenumber __res_servicenumber 438 __BEGIN_DECLS 439 int res_hnok(const char *); 440 int res_ownok(const char *); 441 int res_mailok(const char *); 442 int res_dnok(const char *); 443 int sym_ston(const struct res_sym *, const char *, int *); 444 const char * sym_ntos(const struct res_sym *, int, int *); 445 const char * sym_ntop(const struct res_sym *, int, int *); 446 #ifndef ANDROID_CHANGES 447 int b64_ntop(u_char const *, size_t, char *, size_t); 448 int b64_pton(char const *, u_char *, size_t); 449 #endif 450 int loc_aton(const char *, u_char *); 451 const char * loc_ntoa(const u_char *, char *, size_t); 452 int dn_skipname(const u_char *, const u_char *); 453 void putlong(uint32_t, u_char *); 454 void putshort(uint16_t, u_char *); 455 #ifndef __ultrix__ 456 uint16_t _getshort(const u_char *); 457 uint32_t _getlong(const u_char *); 458 #endif 459 const char * p_class(int); 460 const char * p_time(uint32_t); 461 const char * p_type(int); 462 const char * p_rcode(int); 463 __LIBC_HIDDEN__ const char * p_sockun(union res_sockaddr_union, char *, size_t); 464 const u_char * p_cdnname(const u_char *, const u_char *, int, FILE *); 465 const u_char * p_cdname(const u_char *, const u_char *, FILE *); 466 const u_char * p_fqnname(const u_char *, const u_char *, 467 int, char *, int); 468 const u_char * p_fqname(const u_char *, const u_char *, FILE *); 469 const char * p_option(u_long); 470 char * p_secstodate(u_long); 471 int dn_count_labels(const char *); 472 int res_nameinquery(const char *, int, int, const u_char *, 473 const u_char *); 474 int res_queriesmatch(const u_char *, const u_char *, 475 const u_char *, const u_char *); 476 __LIBC_HIDDEN__ const char * p_section(int, int); 477 /* Things involving a resolver context. */ 478 int res_ninit(res_state); 479 int res_nisourserver(const res_state, const struct sockaddr_in *); 480 void fp_resstat(const res_state, FILE *); 481 __LIBC_HIDDEN__ void res_pquery(const res_state, const u_char *, int, FILE *); 482 const char * res_hostalias(const res_state, const char *, char *, size_t); 483 int res_nquery(res_state, const char *, int, int, u_char *, int); 484 int res_nsearch(res_state, const char *, int, int, u_char *, int); 485 int res_nquerydomain(res_state, const char *, const char *, 486 int, int, u_char *, int); 487 int res_nmkquery(res_state, int, const char *, int, int, 488 const u_char *, int, const u_char *, 489 u_char *, int); 490 int res_nsend(res_state, const u_char *, int, u_char *, int); 491 int res_nsendsigned(res_state, const u_char *, int, 492 ns_tsig_key *, u_char *, int); 493 int res_findzonecut(res_state, const char *, ns_class, int, 494 char *, size_t, struct in_addr *, int); 495 int res_findzonecut2(res_state, const char *, ns_class, int, 496 char *, size_t, 497 union res_sockaddr_union *, int); 498 void res_nclose(res_state); 499 __LIBC_HIDDEN__ int res_nopt(res_state, int, u_char *, int, int); 500 void res_send_setqhook(res_send_qhook); 501 void res_send_setrhook(res_send_rhook); 502 __LIBC_HIDDEN__ int __res_vinit(res_state, int); 503 void res_destroyservicelist(void); 504 const char * res_servicename(uint16_t, const char *); 505 const char * res_protocolname(int); 506 void res_destroyprotolist(void); 507 void res_buildprotolist(void); 508 __LIBC_HIDDEN__ const char * res_get_nibblesuffix(res_state); 509 __LIBC_HIDDEN__ const char * res_get_nibblesuffix2(res_state); 510 __LIBC_HIDDEN__ void res_ndestroy(res_state); 511 __LIBC_HIDDEN__ uint16_t res_nametoclass(const char *, int *); 512 __LIBC_HIDDEN__ uint16_t res_nametotype(const char *, int *); 513 __LIBC_HIDDEN__ void res_setservers(res_state, 514 const union res_sockaddr_union *, int); 515 __LIBC_HIDDEN__ int res_getservers(res_state, 516 union res_sockaddr_union *, int); 517 518 __LIBC_HIDDEN__ void res_setnetid(res_state, unsigned); 519 __LIBC_HIDDEN__ void res_setmark(res_state, unsigned); 520 521 // We use the OpenBSD __res_randomid... 522 u_int __res_randomid(void); 523 // ...but NetBSD calls it res_randomid. 524 #define res_randomid __res_randomid 525 526 #ifdef __i386__ 527 # define __socketcall extern __attribute__((__cdecl__)) 528 #else 529 # define __socketcall extern 530 #endif 531 532 __socketcall int __connect(int, const struct sockaddr*, socklen_t); 533 534 #undef __socketcall 535 536 // Symbols that are supposed to be in resolv.h, but that we aren't exporting. 537 int ns_parserr2(ns_msg*, ns_sect, int, ns_rr2*); 538 int ns_name_pton2(const char*, u_char*, size_t, size_t*); 539 int ns_name_unpack2(const u_char*, const u_char*, const u_char*, u_char*, size_t, size_t*); 540 int ns_name_eq(ns_nname_ct, size_t, ns_nname_ct, size_t); 541 int ns_name_owned(ns_namemap_ct, int, ns_namemap_ct, int); 542 int ns_name_map(ns_nname_ct, size_t, ns_namemap_t, int); 543 int ns_name_labels(ns_nname_ct, size_t); 544 545 __END_DECLS 546 547 #endif /* !_RESOLV_PRIVATE_H_ */ 548