1 /* 2 * services/localzone.h - local zones authority service. 3 * 4 * Copyright (c) 2007, NLnet Labs. All rights reserved. 5 * 6 * This software is open source. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * Redistributions of source code must retain the above copyright notice, 13 * this list of conditions and the following disclaimer. 14 * 15 * Redistributions in binary form must reproduce the above copyright notice, 16 * this list of conditions and the following disclaimer in the documentation 17 * and/or other materials provided with the distribution. 18 * 19 * Neither the name of the NLNET LABS nor the names of its contributors may 20 * be used to endorse or promote products derived from this software without 21 * specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 27 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 29 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 30 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 31 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 32 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 33 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 */ 35 36 /** 37 * \file 38 * 39 * This file contains functions to enable local zone authority service. 40 */ 41 42 #ifndef SERVICES_LOCALZONE_H 43 #define SERVICES_LOCALZONE_H 44 #include "util/rbtree.h" 45 #include "util/locks.h" 46 #include "util/storage/dnstree.h" 47 #include "util/module.h" 48 #include "services/view.h" 49 #include "sldns/sbuffer.h" 50 struct packed_rrset_data; 51 struct ub_packed_rrset_key; 52 struct regional; 53 struct config_file; 54 struct edns_data; 55 struct query_info; 56 struct sldns_buffer; 57 struct comm_reply; 58 struct config_strlist; 59 60 /** 61 * Local zone type 62 * This type determines processing for queries that did not match 63 * local-data directly. 64 */ 65 enum localzone_type { 66 /** unset type, used for unset tag_action elements */ 67 local_zone_unset = 0, 68 /** drop query */ 69 local_zone_deny, 70 /** answer with error */ 71 local_zone_refuse, 72 /** answer nxdomain or nodata */ 73 local_zone_static, 74 /** resolve normally */ 75 local_zone_transparent, 76 /** do not block types at localdata names */ 77 local_zone_typetransparent, 78 /** answer with data at zone apex */ 79 local_zone_redirect, 80 /** remove default AS112 blocking contents for zone 81 * nodefault is used in config not during service. */ 82 local_zone_nodefault, 83 /** log client address, but no block (transparent) */ 84 local_zone_inform, 85 /** log client address, and block (drop) */ 86 local_zone_inform_deny, 87 /** log client address, and direct */ 88 local_zone_inform_redirect, 89 /** resolve normally, even when there is local data */ 90 local_zone_always_transparent, 91 /** resolve normally, even when there is local data but return NODATA for A queries */ 92 local_zone_block_a, 93 /** answer with error, even when there is local data */ 94 local_zone_always_refuse, 95 /** answer with nxdomain, even when there is local data */ 96 local_zone_always_nxdomain, 97 /** answer with noerror/nodata, even when there is local data */ 98 local_zone_always_nodata, 99 /** drop query, even when there is local data */ 100 local_zone_always_deny, 101 /** answer with 0.0.0.0 or ::0 or noerror/nodata, even when there is 102 * local data */ 103 local_zone_always_null, 104 /** answer not from the view, but global or no-answer */ 105 local_zone_noview, 106 /** truncate the response; client should retry via tcp */ 107 local_zone_truncate, 108 /** Invalid type, cannot be used to generate answer */ 109 local_zone_invalid 110 }; 111 112 /** 113 * Authoritative local zones storage, shared. 114 */ 115 struct local_zones { 116 /** lock on the localzone tree */ 117 lock_rw_type lock; 118 /** rbtree of struct local_zone */ 119 rbtree_type ztree; 120 }; 121 122 /** 123 * Local zone. A locally served authoritative zone. 124 */ 125 struct local_zone { 126 /** rbtree node, key is name and class */ 127 rbnode_type node; 128 /** parent zone, if any. */ 129 struct local_zone* parent; 130 131 /** zone name, in uncompressed wireformat */ 132 uint8_t* name; 133 /** length of zone name */ 134 size_t namelen; 135 /** number of labels in zone name */ 136 int namelabs; 137 /** the class of this zone. 138 * uses 'dclass' to not conflict with c++ keyword class. */ 139 uint16_t dclass; 140 141 /** lock on the data in the structure 142 * For the node, parent, name, namelen, namelabs, dclass, you 143 * need to also hold the zones_tree lock to change them (or to 144 * delete this zone) */ 145 lock_rw_type lock; 146 147 /** how to process zone */ 148 enum localzone_type type; 149 /** tag bitlist */ 150 uint8_t* taglist; 151 /** length of the taglist (in bytes) */ 152 size_t taglen; 153 /** netblock addr_tree with struct local_zone_override information 154 * or NULL if there are no override elements */ 155 struct rbtree_type* override_tree; 156 157 /** in this region the zone's data is allocated. 158 * the struct local_zone itself is malloced. */ 159 struct regional* region; 160 /** local data for this zone 161 * rbtree of struct local_data */ 162 rbtree_type data; 163 /** if data contains zone apex SOA data, this is a ptr to it. */ 164 struct ub_packed_rrset_key* soa; 165 /** if data contains zone apex SOA data, this is a ptr to an 166 * artificial negative SOA rrset (TTL is the minimum of the TTL and the 167 * SOA.MINIMUM). */ 168 struct ub_packed_rrset_key* soa_negative; 169 }; 170 171 /** 172 * Local data. One domain name, and the RRs to go with it. 173 */ 174 struct local_data { 175 /** rbtree node, key is name only */ 176 rbnode_type node; 177 /** domain name */ 178 uint8_t* name; 179 /** length of name */ 180 size_t namelen; 181 /** number of labels in name */ 182 int namelabs; 183 /** the data rrsets, with different types, linked list. 184 * If this list is NULL, the node is an empty non-terminal. */ 185 struct local_rrset* rrsets; 186 }; 187 188 /** 189 * A local data RRset 190 */ 191 struct local_rrset { 192 /** next in list */ 193 struct local_rrset* next; 194 /** RRset data item */ 195 struct ub_packed_rrset_key* rrset; 196 }; 197 198 /** 199 * Local zone override information 200 */ 201 struct local_zone_override { 202 /** node in addrtree */ 203 struct addr_tree_node node; 204 /** override for local zone type */ 205 enum localzone_type type; 206 }; 207 208 /** 209 * Create local zones storage 210 * @return new struct or NULL on error. 211 */ 212 struct local_zones* local_zones_create(void); 213 214 /** 215 * Delete local zones storage 216 * @param zones: to delete. 217 */ 218 void local_zones_delete(struct local_zones* zones); 219 220 /** 221 * Apply config settings; setup the local authoritative data. 222 * Takes care of locking. 223 * @param zones: is set up. 224 * @param cfg: config data. 225 * @return false on error. 226 */ 227 int local_zones_apply_cfg(struct local_zones* zones, struct config_file* cfg); 228 229 /** 230 * Compare two local_zone entries in rbtree. Sort hierarchical but not 231 * canonical 232 * @param z1: zone 1 233 * @param z2: zone 2 234 * @return: -1, 0, +1 comparison value. 235 */ 236 int local_zone_cmp(const void* z1, const void* z2); 237 238 /** 239 * Compare two local_data entries in rbtree. Sort canonical. 240 * @param d1: data 1 241 * @param d2: data 2 242 * @return: -1, 0, +1 comparison value. 243 */ 244 int local_data_cmp(const void* d1, const void* d2); 245 246 /** 247 * Delete one zone 248 * @param z: to delete. 249 */ 250 void local_zone_delete(struct local_zone* z); 251 252 /** 253 * Lookup zone that contains the given name, class and taglist. 254 * User must lock the tree or result zone. 255 * @param zones: the zones tree 256 * @param name: dname to lookup 257 * @param len: length of name. 258 * @param labs: labelcount of name. 259 * @param dclass: class to lookup. 260 * @param dtype: type to lookup, if type DS a zone higher is used for zonecuts. 261 * @param taglist: taglist to lookup. 262 * @param taglen: length of taglist. 263 * @param ignoretags: lookup zone by name and class, regardless the 264 * local-zone's tags. 265 * @return closest local_zone or NULL if no covering zone is found. 266 */ 267 struct local_zone* local_zones_tags_lookup(struct local_zones* zones, 268 uint8_t* name, size_t len, int labs, uint16_t dclass, uint16_t dtype, 269 uint8_t* taglist, size_t taglen, int ignoretags); 270 271 /** 272 * Lookup zone that contains the given name, class. 273 * User must lock the tree or result zone. 274 * @param zones: the zones tree 275 * @param name: dname to lookup 276 * @param len: length of name. 277 * @param labs: labelcount of name. 278 * @param dclass: class to lookup. 279 * @param dtype: type of the record, if type DS then a zone higher up is found 280 * pass 0 to just plain find a zone for a name. 281 * @return closest local_zone or NULL if no covering zone is found. 282 */ 283 struct local_zone* local_zones_lookup(struct local_zones* zones, 284 uint8_t* name, size_t len, int labs, uint16_t dclass, uint16_t dtype); 285 286 /** 287 * Debug helper. Print all zones 288 * Takes care of locking. 289 * @param zones: the zones tree 290 */ 291 void local_zones_print(struct local_zones* zones); 292 293 /** 294 * Answer authoritatively for local zones. 295 * Takes care of locking. 296 * @param zones: the stored zones (shared, read only). 297 * @param env: the module environment. 298 * @param qinfo: query info (parsed). 299 * @param edns: edns info (parsed). 300 * @param buf: buffer with query ID and flags, also for reply. 301 * @param temp: temporary storage region. 302 * @param repinfo: source address for checks. may be NULL. 303 * @param taglist: taglist for checks. May be NULL. 304 * @param taglen: length of the taglist. 305 * @param tagactions: local zone actions for tags. May be NULL. 306 * @param tagactionssize: length of the tagactions. 307 * @param tag_datas: array per tag of strlist with rdata strings. or NULL. 308 * @param tag_datas_size: size of tag_datas array. 309 * @param tagname: array of tag name strings (for debug output). 310 * @param num_tags: number of items in tagname array. 311 * @param view: answer using this view. May be NULL. 312 * @return true if answer is in buffer. false if query is not answered 313 * by authority data. If the reply should be dropped altogether, the return 314 * value is true, but the buffer is cleared (empty). 315 * It can also return true if a non-exact alias answer is found. In this 316 * case qinfo->local_alias points to the corresponding alias RRset but the 317 * answer is NOT encoded in buffer. It's the caller's responsibility to 318 * complete the alias chain (if needed) and encode the final set of answer. 319 * Data pointed to by qinfo->local_alias is allocated in 'temp' or refers to 320 * configuration data. So the caller will need to make a deep copy of it 321 * if it needs to keep it beyond the lifetime of 'temp' or a dynamic update 322 * to local zone data. 323 */ 324 int local_zones_answer(struct local_zones* zones, struct module_env* env, 325 struct query_info* qinfo, struct edns_data* edns, struct sldns_buffer* buf, 326 struct regional* temp, struct comm_reply* repinfo, uint8_t* taglist, 327 size_t taglen, uint8_t* tagactions, size_t tagactionssize, 328 struct config_strlist** tag_datas, size_t tag_datas_size, 329 char** tagname, int num_tags, struct view* view); 330 331 /** 332 * Answer using the local zone only (not local data used). 333 * @param z: zone for query. 334 * @param env: module environment. 335 * @param qinfo: query. 336 * @param edns: edns from query. 337 * @param repinfo: source address for checks. may be NULL. 338 * @param buf: buffer for answer. 339 * @param temp: temp region for encoding. 340 * @param ld: local data, if NULL, no such name exists in localdata. 341 * @param lz_type: type of the local zone. 342 * @return 1 if a reply is to be sent, 0 if not. 343 */ 344 int 345 local_zones_zone_answer(struct local_zone* z, struct module_env* env, 346 struct query_info* qinfo, struct edns_data* edns, 347 struct comm_reply* repinfo, sldns_buffer* buf, struct regional* temp, 348 struct local_data* ld, enum localzone_type lz_type); 349 350 /** 351 * Parse the string into localzone type. 352 * 353 * @param str: string to parse 354 * @param t: local zone type returned here. 355 * @return 0 on parse error. 356 */ 357 int local_zone_str2type(const char* str, enum localzone_type* t); 358 359 /** 360 * Print localzone type to a string. Pointer to a constant string. 361 * 362 * @param t: local zone type. 363 * @return constant string that describes type. 364 */ 365 const char* local_zone_type2str(enum localzone_type t); 366 367 /** 368 * Find zone that with exactly given name, class. 369 * User must lock the tree or result zone. 370 * @param zones: the zones tree 371 * @param name: dname to lookup 372 * @param len: length of name. 373 * @param labs: labelcount of name. 374 * @param dclass: class to lookup. 375 * @return the exact local_zone or NULL. 376 */ 377 struct local_zone* local_zones_find(struct local_zones* zones, 378 uint8_t* name, size_t len, int labs, uint16_t dclass); 379 380 /** 381 * Find zone that with exactly or smaller name/class 382 * User must lock the tree or result zone. 383 * @param zones: the zones tree 384 * @param name: dname to lookup 385 * @param len: length of name. 386 * @param labs: labelcount of name. 387 * @param dclass: class to lookup. 388 * @param exact: 1 on return is this is an exact match. 389 * @return the exact or smaller local_zone or NULL. 390 */ 391 struct local_zone* 392 local_zones_find_le(struct local_zones* zones, 393 uint8_t* name, size_t len, int labs, uint16_t dclass, 394 int* exact); 395 396 /** 397 * Add a new zone. Caller must hold the zones lock. 398 * Adjusts the other zones as well (parent pointers) after insertion. 399 * The zone must NOT exist (returns NULL and logs error). 400 * @param zones: the zones tree 401 * @param name: dname to add 402 * @param len: length of name. 403 * @param labs: labelcount of name. 404 * @param dclass: class to add. 405 * @param tp: type. 406 * @return local_zone or NULL on error, caller must printout memory error. 407 */ 408 struct local_zone* local_zones_add_zone(struct local_zones* zones, 409 uint8_t* name, size_t len, int labs, uint16_t dclass, 410 enum localzone_type tp); 411 412 /** 413 * Delete a zone. Caller must hold the zones lock. 414 * Adjusts the other zones as well (parent pointers) after insertion. 415 * @param zones: the zones tree 416 * @param zone: the zone to delete from tree. Also deletes zone from memory. 417 */ 418 void local_zones_del_zone(struct local_zones* zones, struct local_zone* zone); 419 420 /** 421 * Add RR data into the localzone data. 422 * Looks up the zone, if no covering zone, a transparent zone with the 423 * name of the RR is created. 424 * @param zones: the zones tree. Not locked by caller. 425 * @param rr: string with on RR. 426 * @return false on failure. 427 */ 428 int local_zones_add_RR(struct local_zones* zones, const char* rr); 429 430 /** 431 * Remove data from domain name in the tree. 432 * All types are removed. No effect if zone or name does not exist. 433 * @param zones: zones tree. 434 * @param name: dname to remove 435 * @param len: length of name. 436 * @param labs: labelcount of name. 437 * @param dclass: class to remove. 438 */ 439 void local_zones_del_data(struct local_zones* zones, 440 uint8_t* name, size_t len, int labs, uint16_t dclass); 441 442 443 /** 444 * Form wireformat from text format domain name. 445 * @param str: the domain name in text "www.example.com" 446 * @param res: resulting wireformat is stored here with malloc. 447 * @param len: length of resulting wireformat. 448 * @param labs: number of labels in resulting wireformat. 449 * @return false on error, syntax or memory. Also logged. 450 */ 451 int parse_dname(const char* str, uint8_t** res, size_t* len, int* labs); 452 453 /** 454 * Find local data tag string match for the given type (in qinfo) in the list. 455 * If found, 'r' will be filled with corresponding rrset information. 456 * @param qinfo: contains name, type, and class for the data 457 * @param list: stores local tag data to be searched 458 * @param r: rrset key to be filled for matched data 459 * @param temp: region to allocate rrset in 'r' 460 * @return 1 if a match is found and rrset is built; otherwise 0 including 461 * errors. 462 */ 463 int local_data_find_tag_datas(const struct query_info* qinfo, 464 struct config_strlist* list, struct ub_packed_rrset_key* r, 465 struct regional* temp); 466 467 /** 468 * See if two sets of tag lists (in the form of bitmap) have the same tag that 469 * has an action. If so, '*tag' will be set to the found tag index, and the 470 * corresponding action will be returned in the form of local zone type. 471 * Otherwise the passed type (lzt) will be returned as the default action. 472 * Pointers except tagactions must not be NULL. 473 * @param taglist: 1st list of tags 474 * @param taglen: size of taglist in bytes 475 * @param taglist2: 2nd list of tags 476 * @param taglen2: size of taglist2 in bytes 477 * @param tagactions: local data actions for tags. May be NULL. 478 * @param tagactionssize: length of the tagactions. 479 * @param lzt: default action (local zone type) if no tag action is found. 480 * @param tag: see above. 481 * @param tagname: array of tag name strings (for debug output). 482 * @param num_tags: number of items in tagname array. 483 * @return found tag action or the default action. 484 */ 485 enum localzone_type local_data_find_tag_action(const uint8_t* taglist, 486 size_t taglen, const uint8_t* taglist2, size_t taglen2, 487 const uint8_t* tagactions, size_t tagactionssize, 488 enum localzone_type lzt, int* tag, char* const* tagname, int num_tags); 489 490 /** 491 * Enter defaults to local zone. 492 * @param zones: to add defaults to 493 * @param cfg: containing list of zones to exclude from default set. 494 * @return 1 on success; 0 otherwise. 495 */ 496 int local_zone_enter_defaults(struct local_zones* zones, 497 struct config_file* cfg); 498 499 /** 500 * Parses resource record string into wire format, also returning its field values. 501 * @param str: input resource record 502 * @param nm: domain name field 503 * @param type: record type field 504 * @param dclass: record class field 505 * @param ttl: ttl field 506 * @param rr: buffer for the parsed rr in wire format 507 * @param len: buffer length 508 * @param rdata: rdata field 509 * @param rdata_len: rdata field length 510 * @return 1 on success; 0 otherwise. 511 */ 512 int rrstr_get_rr_content(const char* str, uint8_t** nm, uint16_t* type, 513 uint16_t* dclass, time_t* ttl, uint8_t* rr, size_t len, 514 uint8_t** rdata, size_t* rdata_len); 515 516 /** 517 * Insert specified rdata into the specified resource record. 518 * @param region: allocator 519 * @param pd: data portion of the destination resource record 520 * @param rdata: source rdata 521 * @param rdata_len: source rdata length 522 * @param ttl: time to live 523 * @param rrstr: resource record in text form (for logging) 524 * @return 1 on success; 0 otherwise. 525 */ 526 int rrset_insert_rr(struct regional* region, struct packed_rrset_data* pd, 527 uint8_t* rdata, size_t rdata_len, time_t ttl, const char* rrstr); 528 529 /** 530 * Remove RR from rrset that is created using localzone's rrset_insert_rr. 531 * @param pd: the RRset containing the RR to remove 532 * @param index: index of RR to remove 533 * @return: 1 on success; 0 otherwise. 534 */ 535 int 536 local_rrset_remove_rr(struct packed_rrset_data* pd, size_t index); 537 538 /** 539 * Valid response ip actions for the IP-response-driven-action feature; 540 * defined here instead of in the respip module to enable sharing of enum 541 * values with the localzone_type enum. 542 * Note that these values except 'none' are the same as localzone types of 543 * the 'same semantics'. It's intentional as we use these values via 544 * access-control-tags, which can be shared for both response ip actions and 545 * local zones. 546 */ 547 enum respip_action { 548 /** no respip action */ 549 respip_none = local_zone_unset, 550 /** don't answer */ 551 respip_deny = local_zone_deny, 552 /** redirect as per provided data */ 553 respip_redirect = local_zone_redirect, 554 /** log query source and answer query */ 555 respip_inform = local_zone_inform, 556 /** log query source and don't answer query */ 557 respip_inform_deny = local_zone_inform_deny, 558 /** log query source and redirect */ 559 respip_inform_redirect = local_zone_inform_redirect, 560 /** resolve normally, even when there is response-ip data */ 561 respip_always_transparent = local_zone_always_transparent, 562 /** answer with 'refused' response */ 563 respip_always_refuse = local_zone_always_refuse, 564 /** answer with 'no such domain' response */ 565 respip_always_nxdomain = local_zone_always_nxdomain, 566 /** answer with nodata response */ 567 respip_always_nodata = local_zone_always_nodata, 568 /** answer with nodata response */ 569 respip_always_deny = local_zone_always_deny, 570 /** RPZ: truncate answer in order to force switch to tcp */ 571 respip_truncate = local_zone_truncate, 572 573 /* The rest of the values are only possible as 574 * access-control-tag-action */ 575 576 /** serves response data (if any), else, drops queries. */ 577 respip_refuse = local_zone_refuse, 578 /** serves response data, else, nodata answer. */ 579 respip_static = local_zone_static, 580 /** gives response data (if any), else nodata answer. */ 581 respip_transparent = local_zone_transparent, 582 /** gives response data (if any), else nodata answer. */ 583 respip_typetransparent = local_zone_typetransparent, 584 /** type invalid */ 585 respip_invalid = local_zone_invalid, 586 }; 587 588 /** 589 * Get local data from local zone and encode answer. 590 * @param z: local zone to use 591 * @param env: module env 592 * @param qinfo: qinfo 593 * @param edns: edns data, for message encoding 594 * @param repinfo: reply info, for message encoding 595 * @param buf: commpoint buffer 596 * @param temp: scratchpad region 597 * @param labs: number of labels in qname 598 * @param ldp: where to store local data 599 * @param lz_type: type of local zone 600 * @param tag: matching tag index 601 * @param tag_datas: alc specific tag data list 602 * @param tag_datas_size: size of tag_datas 603 * @param tagname: list of names of tags, for logging purpose 604 * @param num_tags: number of tags 605 * @return 1 on success 606 */ 607 int 608 local_data_answer(struct local_zone* z, struct module_env* env, 609 struct query_info* qinfo, struct edns_data* edns, 610 struct comm_reply* repinfo, sldns_buffer* buf, 611 struct regional* temp, int labs, struct local_data** ldp, 612 enum localzone_type lz_type, int tag, struct config_strlist** tag_datas, 613 size_t tag_datas_size, char** tagname, int num_tags); 614 615 /** 616 * Add RR to local zone. 617 * @param z: local zone to add RR to 618 * @param nm: dname of RR 619 * @param nmlen: length of nm 620 * @param nmlabs: number of labels of nm 621 * @param rrtype: RR type 622 * @param rrclass: RR class 623 * @param ttl: TTL of RR to add 624 * @param rdata: RDATA of RR to add 625 * @param rdata_len: length of rdata 626 * @param rrstr: RR in string format, for logging 627 * @return: 1 on success 628 */ 629 int 630 local_zone_enter_rr(struct local_zone* z, uint8_t* nm, size_t nmlen, 631 int nmlabs, uint16_t rrtype, uint16_t rrclass, time_t ttl, 632 uint8_t* rdata, size_t rdata_len, const char* rrstr); 633 634 /** 635 * Find a data node by exact name for a local zone 636 * @param z: local_zone containing data tree 637 * @param nm: name of local-data element to find 638 * @param nmlen: length of nm 639 * @param nmlabs: labs of nm 640 * @return local_data on exact match, NULL otherwise. 641 */ 642 struct local_data* 643 local_zone_find_data(struct local_zone* z, uint8_t* nm, size_t nmlen, int nmlabs); 644 #endif /* SERVICES_LOCALZONE_H */ 645