named/unix/dlz_dlopen_driver.c

72 #define MAYBE_LOCK(cd) \
74 		if ((cd->flags & DNS_SDLZFLAG_THREADSAFE) == 0 && \
75 		    cd->in_configure == ISC_FALSE) \
76 			LOCK(&cd->lock); \
79 #define MAYBE_UNLOCK(cd) \
81 		if ((cd->flags & DNS_SDLZFLAG_THREADSAFE) == 0 && \
82 		    cd->in_configure == ISC_FALSE) \
83 			UNLOCK(&cd->lock); \
107 	dlopen_data_t *cd = (dlopen_data_t *) dbdata;
113 	if (cd->dlz_allnodes == NULL) {
117 	MAYBE_LOCK(cd);
118 	result = cd->dlz_allnodes(zone, cd->dbdata, allnodes);
119 	MAYBE_UNLOCK(cd);
128 	dlopen_data_t *cd = (dlopen_data_t *) dbdata;
134 	if (cd->dlz_allowzonexfr == NULL) {
138 	MAYBE_LOCK(cd);
139 	result = cd->dlz_allowzonexfr(cd->dbdata, name, client);
140 	MAYBE_UNLOCK(cd);
148 	dlopen_data_t *cd = (dlopen_data_t *) dbdata;
153 	if (cd->dlz_authority == NULL) {
157 	MAYBE_LOCK(cd);
158 	result = cd->dlz_authority(zone, cd->dbdata, lookup);
159 	MAYBE_UNLOCK(cd);
166 	dlopen_data_t *cd = (dlopen_data_t *) dbdata;
171 	MAYBE_LOCK(cd);
172 	result = cd->dlz_findzonedb(cd->dbdata, name);
173 	MAYBE_UNLOCK(cd);
184 	dlopen_data_t *cd = (dlopen_data_t *) dbdata;
189 	MAYBE_LOCK(cd);
190 	result = cd->dlz_lookup(zone, name, cd->dbdata, lookup,
192 	MAYBE_UNLOCK(cd);
200 dl_load_symbol(dlopen_data_t *cd, const char *symbol, isc_boolean_t mandatory) {
201 	void *ptr = dlsym(cd->dl_handle, symbol);
205 			   "required symbol '%s'", cd->dl_path, symbol);
217 	dlopen_data_t *cd;
235 	cd = isc_mem_get(mctx, sizeof(*cd));
236 	if (cd == NULL) {
240 	memset(cd, 0, sizeof(*cd));
242 	cd->mctx = mctx;
244 	cd->dl_path = isc_mem_strdup(cd->mctx, argv[1]);
245 	if (cd->dl_path == NULL) {
249 	cd->dlzname = isc_mem_strdup(cd->mctx, dlzname);
250 	if (cd->dlzname == NULL) {
255 	result = isc_mutex_init(&cd->lock);
275 	cd->dl_handle = dlopen(cd->dl_path, dlopen_flags);
276 	if (cd->dl_handle == NULL) {
279 			   cd->dl_path, dlerror());
284 	cd->dlz_version = (dlz_dlopen_version_t *)
285 		dl_load_symbol(cd, "dlz_version", ISC_TRUE);
286 	cd->dlz_create = (dlz_dlopen_create_t *)
287 		dl_load_symbol(cd, "dlz_create", ISC_TRUE);
288 	cd->dlz_lookup = (dlz_dlopen_lookup_t *)
289 		dl_load_symbol(cd, "dlz_lookup", ISC_TRUE);
290 	cd->dlz_findzonedb = (dlz_dlopen_findzonedb_t *)
291 		dl_load_symbol(cd, "dlz_findzonedb", ISC_TRUE);
293 	if (cd->dlz_create == NULL ||
294 	    cd->dlz_lookup == NULL ||
295 	    cd->dlz_findzonedb == NULL)
301 	cd->dlz_allowzonexfr = (dlz_dlopen_allowzonexfr_t *)
302 		dl_load_symbol(cd, "dlz_allowzonexfr", ISC_FALSE);
303 	cd->dlz_allnodes = (dlz_dlopen_allnodes_t *)
304 		dl_load_symbol(cd, "dlz_allnodes",
305 			       ISC_TF(cd->dlz_allowzonexfr != NULL));
306 	cd->dlz_authority = (dlz_dlopen_authority_t *)
307 		dl_load_symbol(cd, "dlz_authority", ISC_FALSE);
308 	cd->dlz_newversion = (dlz_dlopen_newversion_t *)
309 		dl_load_symbol(cd, "dlz_newversion", ISC_FALSE);
310 	cd->dlz_closeversion = (dlz_dlopen_closeversion_t *)
311 		dl_load_symbol(cd, "dlz_closeversion",
312 			       ISC_TF(cd->dlz_newversion != NULL));
313 	cd->dlz_configure = (dlz_dlopen_configure_t *)
314 		dl_load_symbol(cd, "dlz_configure", ISC_FALSE);
315 	cd->dlz_ssumatch = (dlz_dlopen_ssumatch_t *)
316 		dl_load_symbol(cd, "dlz_ssumatch", ISC_FALSE);
317 	cd->dlz_addrdataset = (dlz_dlopen_addrdataset_t *)
318 		dl_load_symbol(cd, "dlz_addrdataset", ISC_FALSE);
319 	cd->dlz_subrdataset = (dlz_dlopen_subrdataset_t *)
320 		dl_load_symbol(cd, "dlz_subrdataset", ISC_FALSE);
321 	cd->dlz_delrdataset = (dlz_dlopen_delrdataset_t *)
322 		dl_load_symbol(cd, "dlz_delrdataset", ISC_FALSE);
323 	cd->dlz_destroy = (dlz_dlopen_destroy_t *)
324 		dl_load_symbol(cd, "dlz_destroy", ISC_FALSE);
327 	cd->version = cd->dlz_version(&cd->flags);
328 	if (cd->version != DLZ_DLOPEN_VERSION) {
332 			   cd->version, DLZ_DLOPEN_VERSION, cd->dl_path);
343 	MAYBE_LOCK(cd);
344 	result = cd->dlz_create(dlzname, argc-1, argv+1,
345 				&cd->dbdata,
351 	MAYBE_UNLOCK(cd);
355 	*dbdata = cd;
361 	if (cd->dl_path != NULL)
362 		isc_mem_free(mctx, cd->dl_path);
363 	if (cd->dlzname != NULL)
364 		isc_mem_free(mctx, cd->dlzname);
366 		(void) isc_mutex_destroy(&cd->lock);
368 	if (cd->dl_handle)
369 		dlclose(cd->dl_handle);
371 	isc_mem_put(mctx, cd, sizeof(*cd));
382 	dlopen_data_t *cd = (dlopen_data_t *) dbdata;
387 	if (cd->dlz_destroy) {
388 		MAYBE_LOCK(cd);
389 		cd->dlz_destroy(cd->dbdata);
390 		MAYBE_UNLOCK(cd);
393 	if (cd->dl_path)
394 		isc_mem_free(cd->mctx, cd->dl_path);
395 	if (cd->dlzname)
396 		isc_mem_free(cd->mctx, cd->dlzname);
399 	if (cd->dl_handle)
400 		dlclose(cd->dl_handle);
403 	(void) isc_mutex_destroy(&cd->lock);
405 	mctx = cd->mctx;
406 	isc_mem_put(mctx, cd, sizeof(*cd));
417 	dlopen_data_t *cd = (dlopen_data_t *) dbdata;
422 	if (cd->dlz_newversion == NULL)
425 	MAYBE_LOCK(cd);
426 	result = cd->dlz_newversion(zone, cd->dbdata, versionp);
427 	MAYBE_UNLOCK(cd);
438 	dlopen_data_t *cd = (dlopen_data_t *) dbdata;
442 	if (cd->dlz_newversion == NULL) {
447 	MAYBE_LOCK(cd);
448 	cd->dlz_closeversion(zone, commit, cd->dbdata, versionp);
449 	MAYBE_UNLOCK(cd);
457 	dlopen_data_t *cd = (dlopen_data_t *) dbdata;
462 	if (cd->dlz_configure == NULL)
465 	MAYBE_LOCK(cd);
466 	cd->in_configure = ISC_TRUE;
467 	result = cd->dlz_configure(view, cd->dbdata);
468 	cd->in_configure = ISC_FALSE;
469 	MAYBE_UNLOCK(cd);
483 	dlopen_data_t *cd = (dlopen_data_t *) dbdata;
488 	if (cd->dlz_ssumatch == NULL)
491 	MAYBE_LOCK(cd);
492 	ret = cd->dlz_ssumatch(signer, name, tcpaddr, type, key, keydatalen,
493 			       keydata, cd->dbdata);
494 	MAYBE_UNLOCK(cd);
507 	dlopen_data_t *cd = (dlopen_data_t *) dbdata;
512 	if (cd->dlz_addrdataset == NULL)
515 	MAYBE_LOCK(cd);
516 	result = cd->dlz_addrdataset(name, rdatastr, cd->dbdata, version);
517 	MAYBE_UNLOCK(cd);
529 	dlopen_data_t *cd = (dlopen_data_t *) dbdata;
534 	if (cd->dlz_subrdataset == NULL)
537 	MAYBE_LOCK(cd);
538 	result = cd->dlz_subrdataset(name, rdatastr, cd->dbdata, version);
539 	MAYBE_UNLOCK(cd);
551 	dlopen_data_t *cd = (dlopen_data_t *) dbdata;
556 	if (cd->dlz_delrdataset == NULL)
559 	MAYBE_LOCK(cd);
560 	result = cd->dlz_delrdataset(name, type, cd->dbdata, version);
561 	MAYBE_UNLOCK(cd);