dyndb.c revision 1.2.2.2
1 1.2.2.2 pgoyette /* $NetBSD: dyndb.c,v 1.2.2.2 2018/09/06 06:55:00 pgoyette Exp $ */ 2 1.2.2.2 pgoyette 3 1.2.2.2 pgoyette /* 4 1.2.2.2 pgoyette * Copyright (C) Internet Systems Consortium, Inc. ("ISC") 5 1.2.2.2 pgoyette * 6 1.2.2.2 pgoyette * This Source Code Form is subject to the terms of the Mozilla Public 7 1.2.2.2 pgoyette * License, v. 2.0. If a copy of the MPL was not distributed with this 8 1.2.2.2 pgoyette * file, You can obtain one at http://mozilla.org/MPL/2.0/. 9 1.2.2.2 pgoyette * 10 1.2.2.2 pgoyette * See the COPYRIGHT file distributed with this work for additional 11 1.2.2.2 pgoyette * information regarding copyright ownership. 12 1.2.2.2 pgoyette */ 13 1.2.2.2 pgoyette 14 1.2.2.2 pgoyette 15 1.2.2.2 pgoyette #include <config.h> 16 1.2.2.2 pgoyette 17 1.2.2.2 pgoyette #if HAVE_DLFCN_H 18 1.2.2.2 pgoyette #include <dlfcn.h> 19 1.2.2.2 pgoyette #elif _WIN32 20 1.2.2.2 pgoyette #include <windows.h> 21 1.2.2.2 pgoyette #endif 22 1.2.2.2 pgoyette 23 1.2.2.2 pgoyette #include <isc/buffer.h> 24 1.2.2.2 pgoyette #include <isc/mem.h> 25 1.2.2.2 pgoyette #include <isc/mutex.h> 26 1.2.2.2 pgoyette #include <isc/once.h> 27 1.2.2.2 pgoyette #include <isc/result.h> 28 1.2.2.2 pgoyette #include <isc/region.h> 29 1.2.2.2 pgoyette #include <isc/task.h> 30 1.2.2.2 pgoyette #include <isc/types.h> 31 1.2.2.2 pgoyette #include <isc/util.h> 32 1.2.2.2 pgoyette 33 1.2.2.2 pgoyette #include <dns/dyndb.h> 34 1.2.2.2 pgoyette #include <dns/log.h> 35 1.2.2.2 pgoyette #include <dns/types.h> 36 1.2.2.2 pgoyette #include <dns/view.h> 37 1.2.2.2 pgoyette #include <dns/zone.h> 38 1.2.2.2 pgoyette 39 1.2.2.2 pgoyette #include <string.h> 40 1.2.2.2 pgoyette 41 1.2.2.2 pgoyette #define CHECK(op) \ 42 1.2.2.2 pgoyette do { result = (op); \ 43 1.2.2.2 pgoyette if (result != ISC_R_SUCCESS) goto cleanup; \ 44 1.2.2.2 pgoyette } while (0) 45 1.2.2.2 pgoyette 46 1.2.2.2 pgoyette 47 1.2.2.2 pgoyette typedef struct dyndb_implementation dyndb_implementation_t; 48 1.2.2.2 pgoyette struct dyndb_implementation { 49 1.2.2.2 pgoyette isc_mem_t *mctx; 50 1.2.2.2 pgoyette void *handle; 51 1.2.2.2 pgoyette dns_dyndb_register_t *register_func; 52 1.2.2.2 pgoyette dns_dyndb_destroy_t *destroy_func; 53 1.2.2.2 pgoyette char *name; 54 1.2.2.2 pgoyette void *inst; 55 1.2.2.2 pgoyette LINK(dyndb_implementation_t) link; 56 1.2.2.2 pgoyette }; 57 1.2.2.2 pgoyette 58 1.2.2.2 pgoyette /* 59 1.2.2.2 pgoyette * List of dyndb implementations. Locked by dyndb_lock. 60 1.2.2.2 pgoyette * 61 1.2.2.2 pgoyette * These are stored here so they can be cleaned up on shutdown. 62 1.2.2.2 pgoyette * (The order in which they are stored is not important.) 63 1.2.2.2 pgoyette */ 64 1.2.2.2 pgoyette static LIST(dyndb_implementation_t) dyndb_implementations; 65 1.2.2.2 pgoyette 66 1.2.2.2 pgoyette /* Locks dyndb_implementations. */ 67 1.2.2.2 pgoyette static isc_mutex_t dyndb_lock; 68 1.2.2.2 pgoyette static isc_once_t once = ISC_ONCE_INIT; 69 1.2.2.2 pgoyette 70 1.2.2.2 pgoyette static void 71 1.2.2.2 pgoyette dyndb_initialize(void) { 72 1.2.2.2 pgoyette RUNTIME_CHECK(isc_mutex_init(&dyndb_lock) == ISC_R_SUCCESS); 73 1.2.2.2 pgoyette INIT_LIST(dyndb_implementations); 74 1.2.2.2 pgoyette } 75 1.2.2.2 pgoyette 76 1.2.2.2 pgoyette static dyndb_implementation_t * 77 1.2.2.2 pgoyette impfind(const char *name) { 78 1.2.2.2 pgoyette dyndb_implementation_t *imp; 79 1.2.2.2 pgoyette 80 1.2.2.2 pgoyette for (imp = ISC_LIST_HEAD(dyndb_implementations); 81 1.2.2.2 pgoyette imp != NULL; 82 1.2.2.2 pgoyette imp = ISC_LIST_NEXT(imp, link)) 83 1.2.2.2 pgoyette if (strcasecmp(name, imp->name) == 0) 84 1.2.2.2 pgoyette return (imp); 85 1.2.2.2 pgoyette return (NULL); 86 1.2.2.2 pgoyette } 87 1.2.2.2 pgoyette 88 1.2.2.2 pgoyette #if HAVE_DLFCN_H && HAVE_DLOPEN 89 1.2.2.2 pgoyette static isc_result_t 90 1.2.2.2 pgoyette load_symbol(void *handle, const char *filename, 91 1.2.2.2 pgoyette const char *symbol_name, void **symbolp) 92 1.2.2.2 pgoyette { 93 1.2.2.2 pgoyette const char *errmsg; 94 1.2.2.2 pgoyette void *symbol; 95 1.2.2.2 pgoyette 96 1.2.2.2 pgoyette REQUIRE(handle != NULL); 97 1.2.2.2 pgoyette REQUIRE(symbolp != NULL && *symbolp == NULL); 98 1.2.2.2 pgoyette 99 1.2.2.2 pgoyette symbol = dlsym(handle, symbol_name); 100 1.2.2.2 pgoyette if (symbol == NULL) { 101 1.2.2.2 pgoyette errmsg = dlerror(); 102 1.2.2.2 pgoyette if (errmsg == NULL) 103 1.2.2.2 pgoyette errmsg = "returned function pointer is NULL"; 104 1.2.2.2 pgoyette isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, 105 1.2.2.2 pgoyette DNS_LOGMODULE_DYNDB, ISC_LOG_ERROR, 106 1.2.2.2 pgoyette "failed to lookup symbol %s in " 107 1.2.2.2 pgoyette "dyndb module '%s': %s", 108 1.2.2.2 pgoyette symbol_name, filename, errmsg); 109 1.2.2.2 pgoyette return (ISC_R_FAILURE); 110 1.2.2.2 pgoyette } 111 1.2.2.2 pgoyette dlerror(); 112 1.2.2.2 pgoyette 113 1.2.2.2 pgoyette *symbolp = symbol; 114 1.2.2.2 pgoyette 115 1.2.2.2 pgoyette return (ISC_R_SUCCESS); 116 1.2.2.2 pgoyette } 117 1.2.2.2 pgoyette 118 1.2.2.2 pgoyette static isc_result_t 119 1.2.2.2 pgoyette load_library(isc_mem_t *mctx, const char *filename, const char *instname, 120 1.2.2.2 pgoyette dyndb_implementation_t **impp) 121 1.2.2.2 pgoyette { 122 1.2.2.2 pgoyette isc_result_t result; 123 1.2.2.2 pgoyette void *handle = NULL; 124 1.2.2.2 pgoyette dyndb_implementation_t *imp = NULL; 125 1.2.2.2 pgoyette dns_dyndb_register_t *register_func = NULL; 126 1.2.2.2 pgoyette dns_dyndb_destroy_t *destroy_func = NULL; 127 1.2.2.2 pgoyette dns_dyndb_version_t *version_func = NULL; 128 1.2.2.2 pgoyette int version, flags; 129 1.2.2.2 pgoyette 130 1.2.2.2 pgoyette REQUIRE(impp != NULL && *impp == NULL); 131 1.2.2.2 pgoyette 132 1.2.2.2 pgoyette isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, 133 1.2.2.2 pgoyette DNS_LOGMODULE_DYNDB, ISC_LOG_INFO, 134 1.2.2.2 pgoyette "loading DynDB instance '%s' driver '%s'", 135 1.2.2.2 pgoyette instname, filename); 136 1.2.2.2 pgoyette 137 1.2.2.2 pgoyette flags = RTLD_NOW|RTLD_LOCAL; 138 1.2.2.2 pgoyette #ifdef RTLD_DEEPBIND 139 1.2.2.2 pgoyette flags |= RTLD_DEEPBIND; 140 1.2.2.2 pgoyette #endif 141 1.2.2.2 pgoyette 142 1.2.2.2 pgoyette handle = dlopen(filename, flags); 143 1.2.2.2 pgoyette if (handle == NULL) 144 1.2.2.2 pgoyette CHECK(ISC_R_FAILURE); 145 1.2.2.2 pgoyette 146 1.2.2.2 pgoyette /* Clear dlerror */ 147 1.2.2.2 pgoyette dlerror(); 148 1.2.2.2 pgoyette 149 1.2.2.2 pgoyette CHECK(load_symbol(handle, filename, "dyndb_version", 150 1.2.2.2 pgoyette (void **)&version_func)); 151 1.2.2.2 pgoyette 152 1.2.2.2 pgoyette version = version_func(NULL); 153 1.2.2.2 pgoyette if (version < (DNS_DYNDB_VERSION - DNS_DYNDB_AGE) || 154 1.2.2.2 pgoyette version > DNS_DYNDB_VERSION) 155 1.2.2.2 pgoyette { 156 1.2.2.2 pgoyette isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, 157 1.2.2.2 pgoyette DNS_LOGMODULE_DYNDB, ISC_LOG_ERROR, 158 1.2.2.2 pgoyette "driver API version mismatch: %d/%d", 159 1.2.2.2 pgoyette version, DNS_DYNDB_VERSION); 160 1.2.2.2 pgoyette CHECK(ISC_R_FAILURE); 161 1.2.2.2 pgoyette } 162 1.2.2.2 pgoyette 163 1.2.2.2 pgoyette CHECK(load_symbol(handle, filename, "dyndb_init", 164 1.2.2.2 pgoyette (void **)®ister_func)); 165 1.2.2.2 pgoyette CHECK(load_symbol(handle, filename, "dyndb_destroy", 166 1.2.2.2 pgoyette (void **)&destroy_func)); 167 1.2.2.2 pgoyette 168 1.2.2.2 pgoyette imp = isc_mem_get(mctx, sizeof(dyndb_implementation_t)); 169 1.2.2.2 pgoyette if (imp == NULL) 170 1.2.2.2 pgoyette CHECK(ISC_R_NOMEMORY); 171 1.2.2.2 pgoyette 172 1.2.2.2 pgoyette imp->mctx = NULL; 173 1.2.2.2 pgoyette isc_mem_attach(mctx, &imp->mctx); 174 1.2.2.2 pgoyette imp->handle = handle; 175 1.2.2.2 pgoyette imp->register_func = register_func; 176 1.2.2.2 pgoyette imp->destroy_func = destroy_func; 177 1.2.2.2 pgoyette imp->name = isc_mem_strdup(mctx, instname); 178 1.2.2.2 pgoyette if (imp->name == NULL) 179 1.2.2.2 pgoyette CHECK(ISC_R_NOMEMORY); 180 1.2.2.2 pgoyette 181 1.2.2.2 pgoyette imp->inst = NULL; 182 1.2.2.2 pgoyette INIT_LINK(imp, link); 183 1.2.2.2 pgoyette 184 1.2.2.2 pgoyette *impp = imp; 185 1.2.2.2 pgoyette imp = NULL; 186 1.2.2.2 pgoyette 187 1.2.2.2 pgoyette cleanup: 188 1.2.2.2 pgoyette if (result != ISC_R_SUCCESS) 189 1.2.2.2 pgoyette isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, 190 1.2.2.2 pgoyette DNS_LOGMODULE_DYNDB, ISC_LOG_ERROR, 191 1.2.2.2 pgoyette "failed to dynamically load instance '%s' " 192 1.2.2.2 pgoyette "driver '%s': %s (%s)", instname, filename, 193 1.2.2.2 pgoyette dlerror(), isc_result_totext(result)); 194 1.2.2.2 pgoyette if (imp != NULL) 195 1.2.2.2 pgoyette isc_mem_putanddetach(&imp->mctx, imp, sizeof(dyndb_implementation_t)); 196 1.2.2.2 pgoyette if (result != ISC_R_SUCCESS && handle != NULL) 197 1.2.2.2 pgoyette dlclose(handle); 198 1.2.2.2 pgoyette 199 1.2.2.2 pgoyette return (result); 200 1.2.2.2 pgoyette } 201 1.2.2.2 pgoyette 202 1.2.2.2 pgoyette static void 203 1.2.2.2 pgoyette unload_library(dyndb_implementation_t **impp) { 204 1.2.2.2 pgoyette dyndb_implementation_t *imp; 205 1.2.2.2 pgoyette 206 1.2.2.2 pgoyette REQUIRE(impp != NULL && *impp != NULL); 207 1.2.2.2 pgoyette 208 1.2.2.2 pgoyette imp = *impp; 209 1.2.2.2 pgoyette 210 1.2.2.2 pgoyette isc_mem_free(imp->mctx, imp->name); 211 1.2.2.2 pgoyette isc_mem_putanddetach(&imp->mctx, imp, sizeof(dyndb_implementation_t)); 212 1.2.2.2 pgoyette 213 1.2.2.2 pgoyette *impp = NULL; 214 1.2.2.2 pgoyette } 215 1.2.2.2 pgoyette #elif _WIN32 216 1.2.2.2 pgoyette static isc_result_t 217 1.2.2.2 pgoyette load_symbol(HMODULE handle, const char *filename, 218 1.2.2.2 pgoyette const char *symbol_name, void **symbolp) 219 1.2.2.2 pgoyette { 220 1.2.2.2 pgoyette void *symbol; 221 1.2.2.2 pgoyette 222 1.2.2.2 pgoyette REQUIRE(handle != NULL); 223 1.2.2.2 pgoyette REQUIRE(symbolp != NULL && *symbolp == NULL); 224 1.2.2.2 pgoyette 225 1.2.2.2 pgoyette symbol = GetProcAddress(handle, symbol_name); 226 1.2.2.2 pgoyette if (symbol == NULL) { 227 1.2.2.2 pgoyette int errstatus = GetLastError(); 228 1.2.2.2 pgoyette isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, 229 1.2.2.2 pgoyette DNS_LOGMODULE_DYNDB, ISC_LOG_ERROR, 230 1.2.2.2 pgoyette "failed to lookup symbol %s in " 231 1.2.2.2 pgoyette "dyndb module '%s': %d", 232 1.2.2.2 pgoyette symbol_name, filename, errstatus); 233 1.2.2.2 pgoyette return (ISC_R_FAILURE); 234 1.2.2.2 pgoyette } 235 1.2.2.2 pgoyette 236 1.2.2.2 pgoyette *symbolp = symbol; 237 1.2.2.2 pgoyette 238 1.2.2.2 pgoyette return (ISC_R_SUCCESS); 239 1.2.2.2 pgoyette } 240 1.2.2.2 pgoyette 241 1.2.2.2 pgoyette static isc_result_t 242 1.2.2.2 pgoyette load_library(isc_mem_t *mctx, const char *filename, const char *instname, 243 1.2.2.2 pgoyette dyndb_implementation_t **impp) 244 1.2.2.2 pgoyette { 245 1.2.2.2 pgoyette isc_result_t result; 246 1.2.2.2 pgoyette HMODULE handle; 247 1.2.2.2 pgoyette dyndb_implementation_t *imp = NULL; 248 1.2.2.2 pgoyette dns_dyndb_register_t *register_func = NULL; 249 1.2.2.2 pgoyette dns_dyndb_destroy_t *destroy_func = NULL; 250 1.2.2.2 pgoyette dns_dyndb_version_t *version_func = NULL; 251 1.2.2.2 pgoyette int version; 252 1.2.2.2 pgoyette 253 1.2.2.2 pgoyette REQUIRE(impp != NULL && *impp == NULL); 254 1.2.2.2 pgoyette 255 1.2.2.2 pgoyette isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, 256 1.2.2.2 pgoyette DNS_LOGMODULE_DYNDB, ISC_LOG_INFO, 257 1.2.2.2 pgoyette "loading DynDB instance '%s' driver '%s'", 258 1.2.2.2 pgoyette instname, filename); 259 1.2.2.2 pgoyette 260 1.2.2.2 pgoyette handle = LoadLibraryA(filename); 261 1.2.2.2 pgoyette if (handle == NULL) 262 1.2.2.2 pgoyette CHECK(ISC_R_FAILURE); 263 1.2.2.2 pgoyette 264 1.2.2.2 pgoyette CHECK(load_symbol(handle, filename, "dyndb_version", 265 1.2.2.2 pgoyette (void **)&version_func)); 266 1.2.2.2 pgoyette 267 1.2.2.2 pgoyette version = version_func(NULL); 268 1.2.2.2 pgoyette if (version < (DNS_DYNDB_VERSION - DNS_DYNDB_AGE) || 269 1.2.2.2 pgoyette version > DNS_DYNDB_VERSION) 270 1.2.2.2 pgoyette { 271 1.2.2.2 pgoyette isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, 272 1.2.2.2 pgoyette DNS_LOGMODULE_DYNDB, ISC_LOG_ERROR, 273 1.2.2.2 pgoyette "driver API version mismatch: %d/%d", 274 1.2.2.2 pgoyette version, DNS_DYNDB_VERSION); 275 1.2.2.2 pgoyette CHECK(ISC_R_FAILURE); 276 1.2.2.2 pgoyette } 277 1.2.2.2 pgoyette 278 1.2.2.2 pgoyette CHECK(load_symbol(handle, filename, "dyndb_init", 279 1.2.2.2 pgoyette (void **)®ister_func)); 280 1.2.2.2 pgoyette CHECK(load_symbol(handle, filename, "dyndb_destroy", 281 1.2.2.2 pgoyette (void **)&destroy_func)); 282 1.2.2.2 pgoyette 283 1.2.2.2 pgoyette imp = isc_mem_get(mctx, sizeof(dyndb_implementation_t)); 284 1.2.2.2 pgoyette if (imp == NULL) 285 1.2.2.2 pgoyette CHECK(ISC_R_NOMEMORY); 286 1.2.2.2 pgoyette 287 1.2.2.2 pgoyette imp->mctx = NULL; 288 1.2.2.2 pgoyette isc_mem_attach(mctx, &imp->mctx); 289 1.2.2.2 pgoyette imp->handle = handle; 290 1.2.2.2 pgoyette imp->register_func = register_func; 291 1.2.2.2 pgoyette imp->destroy_func = destroy_func; 292 1.2.2.2 pgoyette imp->name = isc_mem_strdup(mctx, instname); 293 1.2.2.2 pgoyette if (imp->name == NULL) 294 1.2.2.2 pgoyette CHECK(ISC_R_NOMEMORY); 295 1.2.2.2 pgoyette 296 1.2.2.2 pgoyette imp->inst = NULL; 297 1.2.2.2 pgoyette INIT_LINK(imp, link); 298 1.2.2.2 pgoyette 299 1.2.2.2 pgoyette *impp = imp; 300 1.2.2.2 pgoyette imp = NULL; 301 1.2.2.2 pgoyette 302 1.2.2.2 pgoyette cleanup: 303 1.2.2.2 pgoyette if (result != ISC_R_SUCCESS) 304 1.2.2.2 pgoyette isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, 305 1.2.2.2 pgoyette DNS_LOGMODULE_DYNDB, ISC_LOG_ERROR, 306 1.2.2.2 pgoyette "failed to dynamically load instance '%s' " 307 1.2.2.2 pgoyette "driver '%s': %d (%s)", instname, filename, 308 1.2.2.2 pgoyette GetLastError(), isc_result_totext(result)); 309 1.2.2.2 pgoyette if (imp != NULL) 310 1.2.2.2 pgoyette isc_mem_putanddetach(&imp->mctx, imp, sizeof(dyndb_implementation_t)); 311 1.2.2.2 pgoyette if (result != ISC_R_SUCCESS && handle != NULL) 312 1.2.2.2 pgoyette FreeLibrary(handle); 313 1.2.2.2 pgoyette 314 1.2.2.2 pgoyette return (result); 315 1.2.2.2 pgoyette } 316 1.2.2.2 pgoyette 317 1.2.2.2 pgoyette static void 318 1.2.2.2 pgoyette unload_library(dyndb_implementation_t **impp) { 319 1.2.2.2 pgoyette dyndb_implementation_t *imp; 320 1.2.2.2 pgoyette 321 1.2.2.2 pgoyette REQUIRE(impp != NULL && *impp != NULL); 322 1.2.2.2 pgoyette 323 1.2.2.2 pgoyette imp = *impp; 324 1.2.2.2 pgoyette 325 1.2.2.2 pgoyette isc_mem_free(imp->mctx, imp->name); 326 1.2.2.2 pgoyette isc_mem_putanddetach(&imp->mctx, imp, sizeof(dyndb_implementation_t)); 327 1.2.2.2 pgoyette 328 1.2.2.2 pgoyette *impp = NULL; 329 1.2.2.2 pgoyette } 330 1.2.2.2 pgoyette #else /* HAVE_DLFCN_H || _WIN32 */ 331 1.2.2.2 pgoyette static isc_result_t 332 1.2.2.2 pgoyette load_library(isc_mem_t *mctx, const char *filename, const char *instname, 333 1.2.2.2 pgoyette dyndb_implementation_t **impp) 334 1.2.2.2 pgoyette { 335 1.2.2.2 pgoyette UNUSED(mctx); 336 1.2.2.2 pgoyette UNUSED(filename); 337 1.2.2.2 pgoyette UNUSED(instname); 338 1.2.2.2 pgoyette UNUSED(impp); 339 1.2.2.2 pgoyette 340 1.2.2.2 pgoyette isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, DNS_LOGMODULE_DYNDB, 341 1.2.2.2 pgoyette ISC_LOG_ERROR, 342 1.2.2.2 pgoyette "dynamic database support is not implemented"); 343 1.2.2.2 pgoyette 344 1.2.2.2 pgoyette return (ISC_R_NOTIMPLEMENTED); 345 1.2.2.2 pgoyette } 346 1.2.2.2 pgoyette 347 1.2.2.2 pgoyette static void 348 1.2.2.2 pgoyette unload_library(dyndb_implementation_t **impp) 349 1.2.2.2 pgoyette { 350 1.2.2.2 pgoyette UNUSED(impp); 351 1.2.2.2 pgoyette } 352 1.2.2.2 pgoyette #endif /* HAVE_DLFCN_H */ 353 1.2.2.2 pgoyette 354 1.2.2.2 pgoyette isc_result_t 355 1.2.2.2 pgoyette dns_dyndb_load(const char *libname, const char *name, const char *parameters, 356 1.2.2.2 pgoyette const char *file, unsigned long line, isc_mem_t *mctx, 357 1.2.2.2 pgoyette const dns_dyndbctx_t *dctx) 358 1.2.2.2 pgoyette { 359 1.2.2.2 pgoyette isc_result_t result; 360 1.2.2.2 pgoyette dyndb_implementation_t *implementation = NULL; 361 1.2.2.2 pgoyette 362 1.2.2.2 pgoyette REQUIRE(DNS_DYNDBCTX_VALID(dctx)); 363 1.2.2.2 pgoyette REQUIRE(name != NULL); 364 1.2.2.2 pgoyette 365 1.2.2.2 pgoyette RUNTIME_CHECK(isc_once_do(&once, dyndb_initialize) == ISC_R_SUCCESS); 366 1.2.2.2 pgoyette 367 1.2.2.2 pgoyette LOCK(&dyndb_lock); 368 1.2.2.2 pgoyette 369 1.2.2.2 pgoyette /* duplicate instance names are not allowed */ 370 1.2.2.2 pgoyette if (impfind(name) != NULL) 371 1.2.2.2 pgoyette CHECK(ISC_R_EXISTS); 372 1.2.2.2 pgoyette 373 1.2.2.2 pgoyette CHECK(load_library(mctx, libname, name, &implementation)); 374 1.2.2.2 pgoyette CHECK(implementation->register_func(mctx, name, parameters, file, line, 375 1.2.2.2 pgoyette dctx, &implementation->inst)); 376 1.2.2.2 pgoyette 377 1.2.2.2 pgoyette APPEND(dyndb_implementations, implementation, link); 378 1.2.2.2 pgoyette result = ISC_R_SUCCESS; 379 1.2.2.2 pgoyette 380 1.2.2.2 pgoyette cleanup: 381 1.2.2.2 pgoyette if (result != ISC_R_SUCCESS) 382 1.2.2.2 pgoyette if (implementation != NULL) 383 1.2.2.2 pgoyette unload_library(&implementation); 384 1.2.2.2 pgoyette 385 1.2.2.2 pgoyette UNLOCK(&dyndb_lock); 386 1.2.2.2 pgoyette return (result); 387 1.2.2.2 pgoyette } 388 1.2.2.2 pgoyette 389 1.2.2.2 pgoyette void 390 1.2.2.2 pgoyette dns_dyndb_cleanup(isc_boolean_t exiting) { 391 1.2.2.2 pgoyette dyndb_implementation_t *elem; 392 1.2.2.2 pgoyette dyndb_implementation_t *prev; 393 1.2.2.2 pgoyette 394 1.2.2.2 pgoyette RUNTIME_CHECK(isc_once_do(&once, dyndb_initialize) == ISC_R_SUCCESS); 395 1.2.2.2 pgoyette 396 1.2.2.2 pgoyette LOCK(&dyndb_lock); 397 1.2.2.2 pgoyette elem = TAIL(dyndb_implementations); 398 1.2.2.2 pgoyette while (elem != NULL) { 399 1.2.2.2 pgoyette prev = PREV(elem, link); 400 1.2.2.2 pgoyette UNLINK(dyndb_implementations, elem, link); 401 1.2.2.2 pgoyette isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, 402 1.2.2.2 pgoyette DNS_LOGMODULE_DYNDB, ISC_LOG_INFO, 403 1.2.2.2 pgoyette "unloading DynDB instance '%s'", elem->name); 404 1.2.2.2 pgoyette elem->destroy_func(&elem->inst); 405 1.2.2.2 pgoyette ENSURE(elem->inst == NULL); 406 1.2.2.2 pgoyette unload_library(&elem); 407 1.2.2.2 pgoyette elem = prev; 408 1.2.2.2 pgoyette } 409 1.2.2.2 pgoyette UNLOCK(&dyndb_lock); 410 1.2.2.2 pgoyette 411 1.2.2.2 pgoyette if (exiting == ISC_TRUE) 412 1.2.2.2 pgoyette isc_mutex_destroy(&dyndb_lock); 413 1.2.2.2 pgoyette } 414 1.2.2.2 pgoyette 415 1.2.2.2 pgoyette isc_result_t 416 1.2.2.2 pgoyette dns_dyndb_createctx(isc_mem_t *mctx, const void *hashinit, isc_log_t *lctx, 417 1.2.2.2 pgoyette dns_view_t *view, dns_zonemgr_t *zmgr, isc_task_t *task, 418 1.2.2.2 pgoyette isc_timermgr_t *tmgr, dns_dyndbctx_t **dctxp) 419 1.2.2.2 pgoyette { 420 1.2.2.2 pgoyette dns_dyndbctx_t *dctx; 421 1.2.2.2 pgoyette 422 1.2.2.2 pgoyette REQUIRE(dctxp != NULL && *dctxp == NULL); 423 1.2.2.2 pgoyette 424 1.2.2.2 pgoyette dctx = isc_mem_get(mctx, sizeof(*dctx)); 425 1.2.2.2 pgoyette if (dctx == NULL) 426 1.2.2.2 pgoyette return (ISC_R_NOMEMORY); 427 1.2.2.2 pgoyette 428 1.2.2.2 pgoyette memset(dctx, 0, sizeof(*dctx)); 429 1.2.2.2 pgoyette if (view != NULL) 430 1.2.2.2 pgoyette dns_view_attach(view, &dctx->view); 431 1.2.2.2 pgoyette if (zmgr != NULL) 432 1.2.2.2 pgoyette dns_zonemgr_attach(zmgr, &dctx->zmgr); 433 1.2.2.2 pgoyette if (task != NULL) 434 1.2.2.2 pgoyette isc_task_attach(task, &dctx->task); 435 1.2.2.2 pgoyette dctx->timermgr = tmgr; 436 1.2.2.2 pgoyette dctx->hashinit = hashinit; 437 1.2.2.2 pgoyette dctx->lctx = lctx; 438 1.2.2.2 pgoyette dctx->refvar = &isc_bind9; 439 1.2.2.2 pgoyette 440 1.2.2.2 pgoyette isc_mem_attach(mctx, &dctx->mctx); 441 1.2.2.2 pgoyette dctx->magic = DNS_DYNDBCTX_MAGIC; 442 1.2.2.2 pgoyette 443 1.2.2.2 pgoyette *dctxp = dctx; 444 1.2.2.2 pgoyette 445 1.2.2.2 pgoyette return (ISC_R_SUCCESS); 446 1.2.2.2 pgoyette } 447 1.2.2.2 pgoyette 448 1.2.2.2 pgoyette void 449 1.2.2.2 pgoyette dns_dyndb_destroyctx(dns_dyndbctx_t **dctxp) { 450 1.2.2.2 pgoyette dns_dyndbctx_t *dctx; 451 1.2.2.2 pgoyette 452 1.2.2.2 pgoyette REQUIRE(dctxp != NULL && DNS_DYNDBCTX_VALID(*dctxp)); 453 1.2.2.2 pgoyette 454 1.2.2.2 pgoyette dctx = *dctxp; 455 1.2.2.2 pgoyette *dctxp = NULL; 456 1.2.2.2 pgoyette 457 1.2.2.2 pgoyette dctx->magic = 0; 458 1.2.2.2 pgoyette 459 1.2.2.2 pgoyette if (dctx->view != NULL) 460 1.2.2.2 pgoyette dns_view_detach(&dctx->view); 461 1.2.2.2 pgoyette if (dctx->zmgr != NULL) 462 1.2.2.2 pgoyette dns_zonemgr_detach(&dctx->zmgr); 463 1.2.2.2 pgoyette if (dctx->task != NULL) 464 1.2.2.2 pgoyette isc_task_detach(&dctx->task); 465 1.2.2.2 pgoyette dctx->timermgr = NULL; 466 1.2.2.2 pgoyette dctx->lctx = NULL; 467 1.2.2.2 pgoyette 468 1.2.2.2 pgoyette isc_mem_putanddetach(&dctx->mctx, dctx, sizeof(*dctx)); 469 1.2.2.2 pgoyette } 470
Indexes created Tue Apr 28 00:22:25 UTC 2026