2 * Copyright (C) 2004-2007, 2011 Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1999-2002 Internet Software Consortium.
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.
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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.
18 /* $Id: zt.h,v 1.40 2011/09/02 23:46:32 tbox Exp $ */
27 #include <dns/types.h>
29 #define DNS_ZTFIND_NOEXACT 0x01
34 (*dns_zt_allloaded_t)(void *arg);
36 * Method prototype: when all pending zone loads are complete,
37 * the zone table can inform the caller via a callback function with
42 (*dns_zt_zoneloaded_t)(dns_zt_t *zt, dns_zone_t *zone, isc_task_t *task);
44 * Method prototype: when a zone finishes loading, the zt object
45 * can be informed via a callback function with this signature.
49 dns_zt_create(isc_mem_t *mctx, dns_rdataclass_t rdclass, dns_zt_t **zt);
51 * Creates a new zone table.
54 * \li 'mctx' to be initialized.
57 * \li #ISC_R_SUCCESS on success.
62 dns_zt_mount(dns_zt_t *zt, dns_zone_t *zone);
64 * Mounts the zone on the zone table.
67 * \li 'zt' to be valid
68 * \li 'zone' to be valid
78 dns_zt_unmount(dns_zt_t *zt, dns_zone_t *zone);
80 * Unmount the given zone from the table.
84 * \li 'zone' to be valid
93 dns_zt_find(dns_zt_t *zt, dns_name_t *name, unsigned int options,
94 dns_name_t *foundname, dns_zone_t **zone);
96 * Find the best match for 'name' in 'zt'. If foundname is non NULL
97 * then the name of the zone found is returned.
100 * \li If the DNS_ZTFIND_NOEXACT is set, the best partial match (if any)
101 * to 'name' will be returned.
104 * \li 'zt' to be valid
105 * \li 'name' to be valid
106 * \li 'foundname' to be initialized and associated with a fixedname or NULL
107 * \li 'zone' to be non NULL and '*zone' to be NULL
111 * \li #DNS_R_PARTIALMATCH
112 * \li #ISC_R_NOTFOUND
117 dns_zt_detach(dns_zt_t **ztp);
119 * Detach the given zonetable, if the reference count goes to zero the
120 * zonetable will be freed. In either case 'ztp' is set to NULL.
123 * \li '*ztp' to be valid
127 dns_zt_flushanddetach(dns_zt_t **ztp);
129 * Detach the given zonetable, if the reference count goes to zero the
130 * zonetable will be flushed and then freed. In either case 'ztp' is
134 * \li '*ztp' to be valid
138 dns_zt_attach(dns_zt_t *zt, dns_zt_t **ztp);
140 * Attach 'zt' to '*ztp'.
143 * \li 'zt' to be valid
144 * \li '*ztp' to be NULL
148 dns_zt_load(dns_zt_t *zt, isc_boolean_t stop);
151 dns_zt_loadnew(dns_zt_t *zt, isc_boolean_t stop);
154 dns_zt_asyncload(dns_zt_t *zt, dns_zt_allloaded_t alldone, void *arg);
156 * Load all zones in the table. If 'stop' is ISC_TRUE,
157 * stop on the first error and return it. If 'stop'
158 * is ISC_FALSE, ignore errors.
160 * dns_zt_loadnew() only loads zones that are not yet loaded.
161 * dns_zt_load() also loads zones that are already loaded and
162 * and whose master file has changed since the last load.
163 * dns_zt_asyncload() loads zones asynchronously; when all
164 * zones in the zone table have finished loaded (or failed due
165 * to errors), the caller is informed by calling 'alldone'
166 * with an argument of 'arg'.
169 * \li 'zt' to be valid
173 dns_zt_freezezones(dns_zt_t *zt, isc_boolean_t freeze);
175 * Freeze/thaw updates to master zones.
176 * Any pending updates will be flushed.
177 * Zones will be reloaded on thaw.
181 dns_zt_apply(dns_zt_t *zt, isc_boolean_t stop,
182 isc_result_t (*action)(dns_zone_t *, void *), void *uap);
185 dns_zt_apply2(dns_zt_t *zt, isc_boolean_t stop, isc_result_t *sub,
186 isc_result_t (*action)(dns_zone_t *, void *), void *uap);
188 * Apply a given 'action' to all zone zones in the table.
189 * If 'stop' is 'ISC_TRUE' then walking the zone tree will stop if
190 * 'action' does not return ISC_R_SUCCESS.
193 * \li 'zt' to be valid.
194 * \li 'action' to be non NULL.
197 * \li ISC_R_SUCCESS if action was applied to all nodes. If 'stop' is
198 * ISC_FALSE and 'sub' is non NULL then the first error (if any)
199 * reported by 'action' is returned in '*sub';
200 * any error code from 'action'.
204 dns_zt_loadspending(dns_zt_t *zt);
206 * Returns ISC_TRUE if and only if there are zones still waiting to
207 * be loaded in zone table 'zt'.
210 * \li 'zt' to be valid.
215 #endif /* DNS_ZT_H */