upstream/bind9
1
0
Fork 0
mirror of https://github.com/isc-projects/bind9.git synced 2026-06-11 06:49:58 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

add attachversion; fix rdatasetiterator problem

Browse source
This commit is contained in:
Bob Halley 1999-04-19 22:52:25 +00:00
parent b8862d5130
commit d25999ff03
1 changed files with 46 additions and 26 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

72
lib/dns/rbtdb.c
View file

@ -403,6 +403,26 @@ newversion(dns_db_t *db, dns_dbversion_t **versionp) {
return (DNS_R_SUCCESS);
}
static void
attachversion(dns_db_t *db, dns_dbversion_t *source,
dns_dbversion_t **targetp)
{
dns_rbtdb_t *rbtdb = (dns_rbtdb_t *)db;
rbtdb_version_t *rbtversion = source;
REQUIRE(VALID_RBTDB(rbtdb));
LOCK(&rbtdb->lock);
INSIST(rbtversion->references > 0);
rbtversion->references++;
INSIST(rbtversion->references != 0);
UNLOCK(&rbtdb->lock);
*targetp = rbtversion;
}
static rbtdb_changed_t *
add_changed(dns_rbtdb_t *rbtdb, rbtdb_version_t *version,
dns_rbtnode_t *node)
@ -549,7 +569,9 @@ clean_zone_node(dns_rbtdb_t *rbtdb, dns_rbtnode_t *node,
break;
if (dcurrent->serial == dparent->serial ||
IGNORE(dcurrent)) {
dparent->down = dcurrent->down;
if (down_next != NULL)
down_next->next = dparent;
dparent->down = down_next;
free_rdataset(mctx, dcurrent);
} else
dparent = dcurrent;
@ -725,7 +747,6 @@ closeversion(dns_db_t *db, dns_dbversion_t **versionp, isc_boolean_t commit) {
dns_rbtnode_t *rbtnode;
REQUIRE(VALID_RBTDB(rbtdb));
REQUIRE(versionp != NULL && *versionp != NULL);
version = (rbtdb_version_t *)*versionp;
cleanup_version = NULL;
@ -2238,7 +2259,7 @@ add(dns_rbtdb_t *rbtdb, dns_rbtnode_t *rbtnode, rbtdb_version_t *rbtversion,
free_rdataset(rbtdb->common.mctx, header);
} else {
newheader->down = header;
header->next = NULL;
header->next = newheader;
rbtnode->dirty = 1;
if (changed != NULL)
changed->dirty = ISC_TRUE;
@ -2509,6 +2530,7 @@ static dns_dbmethods_t zone_methods = {
load,
currentversion,
newversion,
attachversion,
closeversion,
findnode,
zone_find,
@ -2528,6 +2550,7 @@ static dns_dbmethods_t cache_methods = {
load,
currentversion,
newversion,
attachversion,
closeversion,
findnode,
cache_find,
@ -2821,6 +2844,7 @@ rdatasetiter_next(dns_rdatasetiter_t *iterator) {
rdatasetheader_t *header, *top_next;
rbtdb_serial_t serial;
isc_stdtime_t now;
dns_rdatatype_t type;
header = rbtiterator->current;
if (header == NULL)
@ -2836,32 +2860,28 @@ rdatasetiter_next(dns_rdatasetiter_t *iterator) {
LOCK(&rbtdb->node_locks[rbtnode->locknum].lock);
/*
* XXX FIX ME!!!! Someone might have added a new record of
* this type above us, and our next pointer won't be valid.
* What we should do is have our next pointer point up to our
* parent, and we should just skip any records whose type is the
* same as ours.
*/
type = header->type;
for (header = header->next; header != NULL; header = top_next) {
top_next = header->next;
do {
if (header->serial <= serial && !IGNORE(header)) {
/*
* Is this a "this rdataset doesn't
* exist" record?
*/
if ((header->attributes &
RDATASET_ATTR_NONEXISTENT) != 0 ||
(now != 0 && now >= header->ttl))
header = NULL;
if (header->type != type) {
do {
if (header->serial <= serial &&
!IGNORE(header)) {
/*
* Is this a "this rdataset doesn't
* exist" record?
*/
if ((header->attributes &
RDATASET_ATTR_NONEXISTENT) != 0 ||
(now != 0 && now >= header->ttl))
header = NULL;
break;
} else
header = header->down;
} while (header != NULL);
if (header != NULL)
break;
} else
header = header->down;
} while (header != NULL);
if (header != NULL)
break;
}
}
UNLOCK(&rbtdb->node_locks[rbtnode->locknum].lock);