diff options
Diffstat (limited to 'contrib/bind9/lib/dns/zt.c')
| -rw-r--r-- | contrib/bind9/lib/dns/zt.c | 320 |
1 files changed, 0 insertions, 320 deletions
diff --git a/contrib/bind9/lib/dns/zt.c b/contrib/bind9/lib/dns/zt.c deleted file mode 100644 index 7aa6a9f4c96e..000000000000 --- a/contrib/bind9/lib/dns/zt.c +++ /dev/null @@ -1,320 +0,0 @@ -/* - * Copyright (C) 2004 Internet Systems Consortium, Inc. ("ISC") - * Copyright (C) 1999-2002 Internet Software Consortium. - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH - * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, - * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM - * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE - * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR - * PERFORMANCE OF THIS SOFTWARE. - */ - -/* $Id: zt.c,v 1.33.12.6 2004/03/08 21:06:28 marka Exp $ */ - -#include <config.h> - -#include <isc/magic.h> -#include <isc/mem.h> -#include <isc/util.h> - -#include <dns/rbt.h> -#include <dns/result.h> -#include <dns/zone.h> -#include <dns/zt.h> - -struct dns_zt { - /* Unlocked. */ - unsigned int magic; - isc_mem_t *mctx; - dns_rdataclass_t rdclass; - isc_rwlock_t rwlock; - /* Locked by lock. */ - isc_uint32_t references; - dns_rbt_t *table; -}; - -#define ZTMAGIC ISC_MAGIC('Z', 'T', 'b', 'l') -#define VALID_ZT(zt) ISC_MAGIC_VALID(zt, ZTMAGIC) - -static void -auto_detach(void *, void *); - -static isc_result_t -load(dns_zone_t *zone, void *uap); - -static isc_result_t -loadnew(dns_zone_t *zone, void *uap); - -isc_result_t -dns_zt_create(isc_mem_t *mctx, dns_rdataclass_t rdclass, dns_zt_t **ztp) { - dns_zt_t *zt; - isc_result_t result; - - REQUIRE(ztp != NULL && *ztp == NULL); - - zt = isc_mem_get(mctx, sizeof(*zt)); - if (zt == NULL) - return (ISC_R_NOMEMORY); - - zt->table = NULL; - result = dns_rbt_create(mctx, auto_detach, zt, &zt->table); - if (result != ISC_R_SUCCESS) - goto cleanup_zt; - - result = isc_rwlock_init(&zt->rwlock, 0, 0); - if (result != ISC_R_SUCCESS) { - UNEXPECTED_ERROR(__FILE__, __LINE__, - "isc_rwlock_init() failed: %s", - isc_result_totext(result)); - result = ISC_R_UNEXPECTED; - goto cleanup_rbt; - } - - zt->mctx = mctx; - zt->references = 1; - zt->rdclass = rdclass; - zt->magic = ZTMAGIC; - *ztp = zt; - - return (ISC_R_SUCCESS); - - cleanup_rbt: - dns_rbt_destroy(&zt->table); - - cleanup_zt: - isc_mem_put(mctx, zt, sizeof(*zt)); - - return (result); -} - -isc_result_t -dns_zt_mount(dns_zt_t *zt, dns_zone_t *zone) { - isc_result_t result; - dns_zone_t *dummy = NULL; - dns_name_t *name; - - REQUIRE(VALID_ZT(zt)); - - name = dns_zone_getorigin(zone); - - RWLOCK(&zt->rwlock, isc_rwlocktype_write); - - result = dns_rbt_addname(zt->table, name, zone); - if (result == ISC_R_SUCCESS) - dns_zone_attach(zone, &dummy); - - RWUNLOCK(&zt->rwlock, isc_rwlocktype_write); - - return (result); -} - -isc_result_t -dns_zt_unmount(dns_zt_t *zt, dns_zone_t *zone) { - isc_result_t result; - dns_name_t *name; - - REQUIRE(VALID_ZT(zt)); - - name = dns_zone_getorigin(zone); - - RWLOCK(&zt->rwlock, isc_rwlocktype_write); - - result = dns_rbt_deletename(zt->table, name, ISC_FALSE); - - RWUNLOCK(&zt->rwlock, isc_rwlocktype_write); - - return (result); -} - -isc_result_t -dns_zt_find(dns_zt_t *zt, dns_name_t *name, unsigned int options, - dns_name_t *foundname, dns_zone_t **zonep) -{ - isc_result_t result; - dns_zone_t *dummy = NULL; - unsigned int rbtoptions = 0; - - REQUIRE(VALID_ZT(zt)); - - if ((options & DNS_ZTFIND_NOEXACT) != 0) - rbtoptions |= DNS_RBTFIND_NOEXACT; - - RWLOCK(&zt->rwlock, isc_rwlocktype_read); - - result = dns_rbt_findname(zt->table, name, rbtoptions, foundname, - (void **) (void*)&dummy); - if (result == ISC_R_SUCCESS || result == DNS_R_PARTIALMATCH) - dns_zone_attach(dummy, zonep); - - RWUNLOCK(&zt->rwlock, isc_rwlocktype_read); - - return (result); -} - -void -dns_zt_attach(dns_zt_t *zt, dns_zt_t **ztp) { - - REQUIRE(VALID_ZT(zt)); - REQUIRE(ztp != NULL && *ztp == NULL); - - RWLOCK(&zt->rwlock, isc_rwlocktype_write); - - INSIST(zt->references > 0); - zt->references++; - INSIST(zt->references != 0); - - RWUNLOCK(&zt->rwlock, isc_rwlocktype_write); - - *ztp = zt; -} - -static isc_result_t -flush(dns_zone_t *zone, void *uap) { - UNUSED(uap); - return (dns_zone_flush(zone)); -} - -static void -zt_flushanddetach(dns_zt_t **ztp, isc_boolean_t need_flush) { - isc_boolean_t destroy = ISC_FALSE; - dns_zt_t *zt; - - REQUIRE(ztp != NULL && VALID_ZT(*ztp)); - - zt = *ztp; - - RWLOCK(&zt->rwlock, isc_rwlocktype_write); - - INSIST(zt->references > 0); - zt->references--; - if (zt->references == 0) - destroy = ISC_TRUE; - - RWUNLOCK(&zt->rwlock, isc_rwlocktype_write); - - if (destroy) { - if (need_flush) - (void)dns_zt_apply(zt, ISC_FALSE, flush, NULL); - dns_rbt_destroy(&zt->table); - isc_rwlock_destroy(&zt->rwlock); - zt->magic = 0; - isc_mem_put(zt->mctx, zt, sizeof(*zt)); - } - - *ztp = NULL; -} - -void -dns_zt_flushanddetach(dns_zt_t **ztp) { - zt_flushanddetach(ztp, ISC_TRUE); -} - -void -dns_zt_detach(dns_zt_t **ztp) { - zt_flushanddetach(ztp, ISC_FALSE); -} - -isc_result_t -dns_zt_load(dns_zt_t *zt, isc_boolean_t stop) { - isc_result_t result; - - REQUIRE(VALID_ZT(zt)); - - RWLOCK(&zt->rwlock, isc_rwlocktype_read); - result = dns_zt_apply(zt, stop, load, NULL); - RWUNLOCK(&zt->rwlock, isc_rwlocktype_read); - return (result); -} - -static isc_result_t -load(dns_zone_t *zone, void *uap) { - isc_result_t result; - UNUSED(uap); - result = dns_zone_load(zone); - if (result == DNS_R_CONTINUE || result == DNS_R_UPTODATE) - result = ISC_R_SUCCESS; - return (result); -} - -isc_result_t -dns_zt_loadnew(dns_zt_t *zt, isc_boolean_t stop) { - isc_result_t result; - - REQUIRE(VALID_ZT(zt)); - - RWLOCK(&zt->rwlock, isc_rwlocktype_read); - result = dns_zt_apply(zt, stop, loadnew, NULL); - RWUNLOCK(&zt->rwlock, isc_rwlocktype_read); - return (result); -} - -static isc_result_t -loadnew(dns_zone_t *zone, void *uap) { - isc_result_t result; - UNUSED(uap); - result = dns_zone_loadnew(zone); - if (result == DNS_R_CONTINUE || result == DNS_R_UPTODATE || - result == DNS_R_DYNAMIC) - result = ISC_R_SUCCESS; - return (result); -} - -isc_result_t -dns_zt_apply(dns_zt_t *zt, isc_boolean_t stop, - isc_result_t (*action)(dns_zone_t *, void *), void *uap) -{ - dns_rbtnode_t *node; - dns_rbtnodechain_t chain; - isc_result_t result; - dns_zone_t *zone; - - REQUIRE(VALID_ZT(zt)); - REQUIRE(action != NULL); - - dns_rbtnodechain_init(&chain, zt->mctx); - result = dns_rbtnodechain_first(&chain, zt->table, NULL, NULL); - if (result == ISC_R_NOTFOUND) { - /* - * The tree is empty. - */ - result = ISC_R_NOMORE; - } - while (result == DNS_R_NEWORIGIN || result == ISC_R_SUCCESS) { - result = dns_rbtnodechain_current(&chain, NULL, NULL, - &node); - if (result == ISC_R_SUCCESS) { - zone = node->data; - if (zone != NULL) - result = (action)(zone, uap); - if (result != ISC_R_SUCCESS && stop) - goto cleanup; /* don't break */ - } - result = dns_rbtnodechain_next(&chain, NULL, NULL); - } - if (result == ISC_R_NOMORE) - result = ISC_R_SUCCESS; - - cleanup: - dns_rbtnodechain_invalidate(&chain); - - return (result); -} - -/*** - *** Private - ***/ - -static void -auto_detach(void *data, void *arg) { - dns_zone_t *zone = data; - - UNUSED(arg); - - dns_zone_detach(&zone); -} |