contrib/bind-9.5.2/lib/dns/rdataset.c

   1 /*
   2  * Copyright (C) 2004-2007, 2009  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 1999-2003  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  10  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  11  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  12  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  13  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  14  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  15  * PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 /* $Id: rdataset.c,v 1.79.128.2 2009/01/19 23:47:02 tbox Exp $ */
  19
  20 /*! \file */
  21
  22 #include <config.h>
  23
  24 #include <stdlib.h>
  25
  26 #include <isc/buffer.h>
  27 #include <isc/mem.h>
  28 #include <isc/random.h>
  29 #include <isc/util.h>
  30
  31 #include <dns/name.h>
  32 #include <dns/ncache.h>
  33 #include <dns/rdata.h>
  34 #include <dns/rdataset.h>
  35 #include <dns/compress.h>
  36
  37 void
  38 dns_rdataset_init(dns_rdataset_t *rdataset) {
  39
  40         /*
  41          * Make 'rdataset' a valid, disassociated rdataset.
  42          */
  43
  44         REQUIRE(rdataset != NULL);
  45
  46         rdataset->magic = DNS_RDATASET_MAGIC;
  47         rdataset->methods = NULL;
  48         ISC_LINK_INIT(rdataset, link);
  49         rdataset->rdclass = 0;
  50         rdataset->type = 0;
  51         rdataset->ttl = 0;
  52         rdataset->trust = 0;
  53         rdataset->covers = 0;
  54         rdataset->attributes = 0;
  55         rdataset->count = ISC_UINT32_MAX;
  56         rdataset->private1 = NULL;
  57         rdataset->private2 = NULL;
  58         rdataset->private3 = NULL;
  59         rdataset->privateuint4 = 0;
  60         rdataset->private5 = NULL;
  61         rdataset->private6 = NULL;
  62 }
  63
  64 void
  65 dns_rdataset_invalidate(dns_rdataset_t *rdataset) {
  66
  67         /*
  68          * Invalidate 'rdataset'.
  69          */
  70
  71         REQUIRE(DNS_RDATASET_VALID(rdataset));
  72         REQUIRE(rdataset->methods == NULL);
  73
  74         rdataset->magic = 0;
  75         ISC_LINK_INIT(rdataset, link);
  76         rdataset->rdclass = 0;
  77         rdataset->type = 0;
  78         rdataset->ttl = 0;
  79         rdataset->trust = 0;
  80         rdataset->covers = 0;
  81         rdataset->attributes = 0;
  82         rdataset->count = ISC_UINT32_MAX;
  83         rdataset->private1 = NULL;
  84         rdataset->private2 = NULL;
  85         rdataset->private3 = NULL;
  86         rdataset->privateuint4 = 0;
  87         rdataset->private5 = NULL;
  88 }
  89
  90 void
  91 dns_rdataset_disassociate(dns_rdataset_t *rdataset) {
  92
  93         /*
  94          * Disassociate 'rdataset' from its rdata, allowing it to be reused.
  95          */
  96
  97         REQUIRE(DNS_RDATASET_VALID(rdataset));
  98         REQUIRE(rdataset->methods != NULL);
  99
 100         (rdataset->methods->disassociate)(rdataset);
 101         rdataset->methods = NULL;
 102         ISC_LINK_INIT(rdataset, link);
 103         rdataset->rdclass = 0;
 104         rdataset->type = 0;
 105         rdataset->ttl = 0;
 106         rdataset->trust = 0;
 107         rdataset->covers = 0;
 108         rdataset->attributes = 0;
 109         rdataset->count = ISC_UINT32_MAX;
 110         rdataset->private1 = NULL;
 111         rdataset->private2 = NULL;
 112         rdataset->private3 = NULL;
 113         rdataset->privateuint4 = 0;
 114         rdataset->private5 = NULL;
 115         rdataset->private6 = NULL;
 116 }
 117
 118 isc_boolean_t
 119 dns_rdataset_isassociated(dns_rdataset_t *rdataset) {
 120         /*
 121          * Is 'rdataset' associated?
 122          */
 123
 124         REQUIRE(DNS_RDATASET_VALID(rdataset));
 125
 126         if (rdataset->methods != NULL)
 127                 return (ISC_TRUE);
 128
 129         return (ISC_FALSE);
 130 }
 131
 132 static void
 133 question_disassociate(dns_rdataset_t *rdataset) {
 134         UNUSED(rdataset);
 135 }
 136
 137 static isc_result_t
 138 question_cursor(dns_rdataset_t *rdataset) {
 139         UNUSED(rdataset);
 140
 141         return (ISC_R_NOMORE);
 142 }
 143
 144 static void
 145 question_current(dns_rdataset_t *rdataset, dns_rdata_t *rdata) {
 146         /*
 147          * This routine should never be called.
 148          */
 149         UNUSED(rdataset);
 150         UNUSED(rdata);
 151
 152         REQUIRE(0);
 153 }
 154
 155 static void
 156 question_clone(dns_rdataset_t *source, dns_rdataset_t *target) {
 157         *target = *source;
 158 }
 159
 160 static unsigned int
 161 question_count(dns_rdataset_t *rdataset) {
 162         /*
 163          * This routine should never be called.
 164          */
 165         UNUSED(rdataset);
 166         REQUIRE(0);
 167
 168         return (0);
 169 }
 170
 171 static dns_rdatasetmethods_t question_methods = {
 172         question_disassociate,
 173         question_cursor,
 174         question_cursor,
 175         question_current,
 176         question_clone,
 177         question_count,
 178         NULL,
 179         NULL,
 180         NULL,
 181         NULL,
 182         NULL
 183 };
 184
 185 void
 186 dns_rdataset_makequestion(dns_rdataset_t *rdataset, dns_rdataclass_t rdclass,
 187                           dns_rdatatype_t type)
 188 {
 189
 190         /*
 191          * Make 'rdataset' a valid, associated, question rdataset, with a
 192          * question class of 'rdclass' and type 'type'.
 193          */
 194
 195         REQUIRE(DNS_RDATASET_VALID(rdataset));
 196         REQUIRE(rdataset->methods == NULL);
 197
 198         rdataset->methods = &question_methods;
 199         rdataset->rdclass = rdclass;
 200         rdataset->type = type;
 201         rdataset->attributes |= DNS_RDATASETATTR_QUESTION;
 202 }
 203
 204 unsigned int
 205 dns_rdataset_count(dns_rdataset_t *rdataset) {
 206
 207         /*
 208          * Return the number of records in 'rdataset'.
 209          */
 210
 211         REQUIRE(DNS_RDATASET_VALID(rdataset));
 212         REQUIRE(rdataset->methods != NULL);
 213
 214         return ((rdataset->methods->count)(rdataset));
 215 }
 216
 217 void
 218 dns_rdataset_clone(dns_rdataset_t *source, dns_rdataset_t *target) {
 219
 220         /*
 221          * Make 'target' refer to the same rdataset as 'source'.
 222          */
 223
 224         REQUIRE(DNS_RDATASET_VALID(source));
 225         REQUIRE(source->methods != NULL);
 226         REQUIRE(DNS_RDATASET_VALID(target));
 227         REQUIRE(target->methods == NULL);
 228
 229         (source->methods->clone)(source, target);
 230 }
 231
 232 isc_result_t
 233 dns_rdataset_first(dns_rdataset_t *rdataset) {
 234
 235         /*
 236          * Move the rdata cursor to the first rdata in the rdataset (if any).
 237          */
 238
 239         REQUIRE(DNS_RDATASET_VALID(rdataset));
 240         REQUIRE(rdataset->methods != NULL);
 241
 242         return ((rdataset->methods->first)(rdataset));
 243 }
 244
 245 isc_result_t
 246 dns_rdataset_next(dns_rdataset_t *rdataset) {
 247
 248         /*
 249          * Move the rdata cursor to the next rdata in the rdataset (if any).
 250          */
 251
 252         REQUIRE(DNS_RDATASET_VALID(rdataset));
 253         REQUIRE(rdataset->methods != NULL);
 254
 255         return ((rdataset->methods->next)(rdataset));
 256 }
 257
 258 void
 259 dns_rdataset_current(dns_rdataset_t *rdataset, dns_rdata_t *rdata) {
 260
 261         /*
 262          * Make 'rdata' refer to the current rdata.
 263          */
 264
 265         REQUIRE(DNS_RDATASET_VALID(rdataset));
 266         REQUIRE(rdataset->methods != NULL);
 267
 268         (rdataset->methods->current)(rdataset, rdata);
 269 }
 270
 271 #define MAX_SHUFFLE     32
 272 #define WANT_FIXED(r)   (((r)->attributes & DNS_RDATASETATTR_FIXEDORDER) != 0)
 273 #define WANT_RANDOM(r)  (((r)->attributes & DNS_RDATASETATTR_RANDOMIZE) != 0)
 274
 275 struct towire_sort {
 276         int key;
 277         dns_rdata_t *rdata;
 278 };
 279
 280 static int
 281 towire_compare(const void *av, const void *bv) {
 282         const struct towire_sort *a = (const struct towire_sort *) av;
 283         const struct towire_sort *b = (const struct towire_sort *) bv;
 284         return (a->key - b->key);
 285 }
 286
 287 static isc_result_t
 288 towiresorted(dns_rdataset_t *rdataset, const dns_name_t *owner_name,
 289              dns_compress_t *cctx, isc_buffer_t *target,
 290              dns_rdatasetorderfunc_t order, const void *order_arg,
 291              isc_boolean_t partial, unsigned int options,
 292              unsigned int *countp, void **state)
 293 {
 294         dns_rdata_t rdata = DNS_RDATA_INIT;
 295         isc_region_t r;
 296         isc_result_t result;
 297         unsigned int i, count, added, choice;
 298         isc_buffer_t savedbuffer, rdlen, rrbuffer;
 299         unsigned int headlen;
 300         isc_boolean_t question = ISC_FALSE;
 301         isc_boolean_t shuffle = ISC_FALSE;
 302         dns_rdata_t *shuffled = NULL, shuffled_fixed[MAX_SHUFFLE];
 303         struct towire_sort *sorted = NULL, sorted_fixed[MAX_SHUFFLE];
 304
 305         UNUSED(state);
 306
 307         /*
 308          * Convert 'rdataset' to wire format, compressing names as specified
 309          * in cctx, and storing the result in 'target'.
 310          */
 311
 312         REQUIRE(DNS_RDATASET_VALID(rdataset));
 313         REQUIRE(countp != NULL);
 314         REQUIRE((order == NULL) == (order_arg == NULL));
 315         REQUIRE(cctx != NULL && cctx->mctx != NULL);
 316
 317         count = 0;
 318         if ((rdataset->attributes & DNS_RDATASETATTR_QUESTION) != 0) {
 319                 question = ISC_TRUE;
 320                 count = 1;
 321                 result = dns_rdataset_first(rdataset);
 322                 INSIST(result == ISC_R_NOMORE);
 323         } else if (rdataset->type == 0) {
 324                 /*
 325                  * This is a negative caching rdataset.
 326                  */
 327                 unsigned int ncache_opts = 0;
 328                 if ((options & DNS_RDATASETTOWIRE_OMITDNSSEC) != 0)
 329                         ncache_opts |= DNS_NCACHETOWIRE_OMITDNSSEC;
 330                 return (dns_ncache_towire(rdataset, cctx, target, ncache_opts,
 331                                           countp));
 332         } else {
 333                 count = (rdataset->methods->count)(rdataset);
 334                 result = dns_rdataset_first(rdataset);
 335                 if (result == ISC_R_NOMORE)
 336                         return (ISC_R_SUCCESS);
 337                 if (result != ISC_R_SUCCESS)
 338                         return (result);
 339         }
 340
 341         /*
 342          * Do we want to shuffle this answer?
 343          */
 344         if (!question && count > 1 &&
 345             (!WANT_FIXED(rdataset) || order != NULL) &&
 346             rdataset->type != dns_rdatatype_rrsig)
 347                 shuffle = ISC_TRUE;
 348
 349         if (shuffle && count > MAX_SHUFFLE) {
 350                 shuffled = isc_mem_get(cctx->mctx, count * sizeof(*shuffled));
 351                 sorted = isc_mem_get(cctx->mctx, count * sizeof(*sorted));
 352                 if (shuffled == NULL || sorted == NULL)
 353                         shuffle = ISC_FALSE;
 354         } else {
 355                 shuffled = shuffled_fixed;
 356                 sorted = sorted_fixed;
 357         }
 358
 359         if (shuffle) {
 360                 /*
 361                  * First we get handles to all of the rdata.
 362                  */
 363                 i = 0;
 364                 do {
 365                         INSIST(i < count);
 366                         dns_rdata_init(&shuffled[i]);
 367                         dns_rdataset_current(rdataset, &shuffled[i]);
 368                         i++;
 369                         result = dns_rdataset_next(rdataset);
 370                 } while (result == ISC_R_SUCCESS);
 371                 if (result != ISC_R_NOMORE)
 372                         goto cleanup;
 373                 INSIST(i == count);
 374
 375                 /*
 376                  * Now we shuffle.
 377                  */
 378                 if (WANT_FIXED(rdataset)) {
 379                         /*
 380                          * 'Fixed' order.
 381                          */
 382                         INSIST(order != NULL);
 383                         for (i = 0; i < count; i++) {
 384                                 sorted[i].key = (*order)(&shuffled[i],
 385                                                          order_arg);
 386                                 sorted[i].rdata = &shuffled[i];
 387                         }
 388                 } else if (WANT_RANDOM(rdataset)) {
 389                         /*
 390                          * 'Random' order.
 391                          */
 392                         for (i = 0; i < count; i++) {
 393                                 dns_rdata_t rdata;
 394                                 isc_uint32_t val;
 395
 396                                 isc_random_get(&val);
 397                                 choice = i + (val % (count - i));
 398                                 rdata = shuffled[i];
 399                                 shuffled[i] = shuffled[choice];
 400                                 shuffled[choice] = rdata;
 401                                 if (order != NULL)
 402                                         sorted[i].key = (*order)(&shuffled[i],
 403                                                                  order_arg);
 404                                 else
 405                                         sorted[i].key = 0; /* Unused */
 406                                 sorted[i].rdata = &shuffled[i];
 407                         }
 408                 } else {
 409                         /*
 410                          * "Cyclic" order.
 411                          */
 412                         isc_uint32_t val;
 413                         unsigned int j;
 414
 415                         val = rdataset->count;
 416                         if (val == ISC_UINT32_MAX)
 417                                 isc_random_get(&val);
 418                         j = val % count;
 419                         for (i = 0; i < count; i++) {
 420                                 if (order != NULL)
 421                                         sorted[j].key = (*order)(&shuffled[i],
 422                                                                  order_arg);
 423                                 else
 424                                         sorted[j].key = 0; /* Unused */
 425                                 sorted[j].rdata = &shuffled[i];
 426                                 j++;
 427                                 if (j == count)
 428                                         j = 0; /* Wrap around. */
 429                         }
 430                 }
 431
 432                 /*
 433                  * Sorted order.
 434                  */
 435                 if (order != NULL)
 436                         qsort(sorted, count, sizeof(sorted[0]),
 437                               towire_compare);
 438         }
 439
 440         savedbuffer = *target;
 441         i = 0;
 442         added = 0;
 443
 444         do {
 445                 /*
 446                  * Copy out the name, type, class, ttl.
 447                  */
 448
 449                 rrbuffer = *target;
 450                 dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14);
 451                 result = dns_name_towire(owner_name, cctx, target);
 452                 if (result != ISC_R_SUCCESS)
 453                         goto rollback;
 454                 headlen = sizeof(dns_rdataclass_t) + sizeof(dns_rdatatype_t);
 455                 if (!question)
 456                         headlen += sizeof(dns_ttl_t)
 457                                 + 2;  /* XXX 2 for rdata len */
 458                 isc_buffer_availableregion(target, &r);
 459                 if (r.length < headlen) {
 460                         result = ISC_R_NOSPACE;
 461                         goto rollback;
 462                 }
 463                 isc_buffer_putuint16(target, rdataset->type);
 464                 isc_buffer_putuint16(target, rdataset->rdclass);
 465                 if (!question) {
 466                         isc_buffer_putuint32(target, rdataset->ttl);
 467
 468                         /*
 469                          * Save space for rdlen.
 470                          */
 471                         rdlen = *target;
 472                         isc_buffer_add(target, 2);
 473
 474                         /*
 475                          * Copy out the rdata
 476                          */
 477                         if (shuffle)
 478                                 rdata = *(sorted[i].rdata);
 479                         else {
 480                                 dns_rdata_reset(&rdata);
 481                                 dns_rdataset_current(rdataset, &rdata);
 482                         }
 483                         result = dns_rdata_towire(&rdata, cctx, target);
 484                         if (result != ISC_R_SUCCESS)
 485                                 goto rollback;
 486                         INSIST((target->used >= rdlen.used + 2) &&
 487                                (target->used - rdlen.used - 2 < 65536));
 488                         isc_buffer_putuint16(&rdlen,
 489                                              (isc_uint16_t)(target->used -
 490                                                             rdlen.used - 2));
 491                         added++;
 492                 }
 493
 494                 if (shuffle) {
 495                         i++;
 496                         if (i == count)
 497                                 result = ISC_R_NOMORE;
 498                         else
 499                                 result = ISC_R_SUCCESS;
 500                 } else {
 501                         result = dns_rdataset_next(rdataset);
 502                 }
 503         } while (result == ISC_R_SUCCESS);
 504
 505         if (result != ISC_R_NOMORE)
 506                 goto rollback;
 507
 508         *countp += count;
 509
 510         result = ISC_R_SUCCESS;
 511         goto cleanup;
 512
 513  rollback:
 514         if (partial && result == ISC_R_NOSPACE) {
 515                 INSIST(rrbuffer.used < 65536);
 516                 dns_compress_rollback(cctx, (isc_uint16_t)rrbuffer.used);
 517                 *countp += added;
 518                 *target = rrbuffer;
 519                 goto cleanup;
 520         }
 521         INSIST(savedbuffer.used < 65536);
 522         dns_compress_rollback(cctx, (isc_uint16_t)savedbuffer.used);
 523         *countp = 0;
 524         *target = savedbuffer;
 525
 526  cleanup:
 527         if (sorted != NULL && sorted != sorted_fixed)
 528                 isc_mem_put(cctx->mctx, sorted, count * sizeof(*sorted));
 529         if (shuffled != NULL && shuffled != shuffled_fixed)
 530                 isc_mem_put(cctx->mctx, shuffled, count * sizeof(*shuffled));
 531         return (result);
 532 }
 533
 534 isc_result_t
 535 dns_rdataset_towiresorted(dns_rdataset_t *rdataset,
 536                           const dns_name_t *owner_name,
 537                           dns_compress_t *cctx,
 538                           isc_buffer_t *target,
 539                           dns_rdatasetorderfunc_t order,
 540                           const void *order_arg,
 541                           unsigned int options,
 542                           unsigned int *countp)
 543 {
 544         return (towiresorted(rdataset, owner_name, cctx, target,
 545                              order, order_arg, ISC_FALSE, options,
 546                              countp, NULL));
 547 }
 548
 549 isc_result_t
 550 dns_rdataset_towirepartial(dns_rdataset_t *rdataset,
 551                            const dns_name_t *owner_name,
 552                            dns_compress_t *cctx,
 553                            isc_buffer_t *target,
 554                            dns_rdatasetorderfunc_t order,
 555                            const void *order_arg,
 556                            unsigned int options,
 557                            unsigned int *countp,
 558                            void **state)
 559 {
 560         REQUIRE(state == NULL); /* XXX remove when implemented */
 561         return (towiresorted(rdataset, owner_name, cctx, target,
 562                              order, order_arg, ISC_TRUE, options,
 563                              countp, state));
 564 }
 565
 566 isc_result_t
 567 dns_rdataset_towire(dns_rdataset_t *rdataset,
 568                     dns_name_t *owner_name,
 569                     dns_compress_t *cctx,
 570                     isc_buffer_t *target,
 571                     unsigned int options,
 572                     unsigned int *countp)
 573 {
 574         return (towiresorted(rdataset, owner_name, cctx, target,
 575                              NULL, NULL, ISC_FALSE, options, countp, NULL));
 576 }
 577
 578 isc_result_t
 579 dns_rdataset_additionaldata(dns_rdataset_t *rdataset,
 580                             dns_additionaldatafunc_t add, void *arg)
 581 {
 582         dns_rdata_t rdata = DNS_RDATA_INIT;
 583         isc_result_t result;
 584
 585         /*
 586          * For each rdata in rdataset, call 'add' for each name and type in the
 587          * rdata which is subject to additional section processing.
 588          */
 589
 590         REQUIRE(DNS_RDATASET_VALID(rdataset));
 591         REQUIRE((rdataset->attributes & DNS_RDATASETATTR_QUESTION) == 0);
 592
 593         result = dns_rdataset_first(rdataset);
 594         if (result != ISC_R_SUCCESS)
 595                 return (result);
 596
 597         do {
 598                 dns_rdataset_current(rdataset, &rdata);
 599                 result = dns_rdata_additionaldata(&rdata, add, arg);
 600                 if (result == ISC_R_SUCCESS)
 601                         result = dns_rdataset_next(rdataset);
 602                 dns_rdata_reset(&rdata);
 603         } while (result == ISC_R_SUCCESS);
 604
 605         if (result != ISC_R_NOMORE)
 606                 return (result);
 607
 608         return (ISC_R_SUCCESS);
 609 }
 610
 611 isc_result_t
 612 dns_rdataset_addnoqname(dns_rdataset_t *rdataset, dns_name_t *name) {
 613
 614         REQUIRE(DNS_RDATASET_VALID(rdataset));
 615         REQUIRE(rdataset->methods != NULL);
 616         if (rdataset->methods->addnoqname == NULL)
 617                 return (ISC_R_NOTIMPLEMENTED);
 618         return((rdataset->methods->addnoqname)(rdataset, name));
 619 }
 620
 621 isc_result_t
 622 dns_rdataset_getnoqname(dns_rdataset_t *rdataset, dns_name_t *name,
 623                         dns_rdataset_t *nsec, dns_rdataset_t *nsecsig)
 624 {
 625         REQUIRE(DNS_RDATASET_VALID(rdataset));
 626         REQUIRE(rdataset->methods != NULL);
 627
 628         if (rdataset->methods->getnoqname == NULL)
 629                 return (ISC_R_NOTIMPLEMENTED);
 630         return((rdataset->methods->getnoqname)(rdataset, name, nsec, nsecsig));
 631 }
 632
 633 /*
 634  * Additional cache stuff
 635  */
 636 isc_result_t
 637 dns_rdataset_getadditional(dns_rdataset_t *rdataset,
 638                            dns_rdatasetadditional_t type,
 639                            dns_rdatatype_t qtype,
 640                            dns_acache_t *acache,
 641                            dns_zone_t **zonep,
 642                            dns_db_t **dbp,
 643                            dns_dbversion_t **versionp,
 644                            dns_dbnode_t **nodep,
 645                            dns_name_t *fname,
 646                            dns_message_t *msg,
 647                            isc_stdtime_t now)
 648 {
 649         REQUIRE(DNS_RDATASET_VALID(rdataset));
 650         REQUIRE(rdataset->methods != NULL);
 651         REQUIRE(zonep == NULL || *zonep == NULL);
 652         REQUIRE(dbp != NULL && *dbp == NULL);
 653         REQUIRE(versionp != NULL && *versionp == NULL);
 654         REQUIRE(nodep != NULL && *nodep == NULL);
 655         REQUIRE(fname != NULL);
 656         REQUIRE(msg != NULL);
 657
 658         if (acache != NULL && rdataset->methods->getadditional != NULL) {
 659                 return ((rdataset->methods->getadditional)(rdataset, type,
 660                                                            qtype, acache,
 661                                                            zonep, dbp,
 662                                                            versionp, nodep,
 663                                                            fname, msg, now));
 664         }
 665
 666         return (ISC_R_FAILURE);
 667 }
 668
 669 isc_result_t
 670 dns_rdataset_setadditional(dns_rdataset_t *rdataset,
 671                            dns_rdatasetadditional_t type,
 672                            dns_rdatatype_t qtype,
 673                            dns_acache_t *acache,
 674                            dns_zone_t *zone,
 675                            dns_db_t *db,
 676                            dns_dbversion_t *version,
 677                            dns_dbnode_t *node,
 678                            dns_name_t *fname)
 679 {
 680         REQUIRE(DNS_RDATASET_VALID(rdataset));
 681         REQUIRE(rdataset->methods != NULL);
 682
 683         if (acache != NULL && rdataset->methods->setadditional != NULL) {
 684                 return ((rdataset->methods->setadditional)(rdataset, type,
 685                                                            qtype, acache, zone,
 686                                                            db, version,
 687                                                            node, fname));
 688         }
 689
 690         return (ISC_R_FAILURE);
 691 }
 692
 693 isc_result_t
 694 dns_rdataset_putadditional(dns_acache_t *acache,
 695                            dns_rdataset_t *rdataset,
 696                            dns_rdatasetadditional_t type,
 697                            dns_rdatatype_t qtype)
 698 {
 699         REQUIRE(DNS_RDATASET_VALID(rdataset));
 700         REQUIRE(rdataset->methods != NULL);
 701
 702         if (acache != NULL && rdataset->methods->putadditional != NULL) {
 703                 return ((rdataset->methods->putadditional)(acache, rdataset,
 704                                                            type, qtype));
 705         }
 706
 707         return (ISC_R_FAILURE);
 708 }
 709