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Merge branch '4683-qpzone-tsan-fix' into 'main'

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replace qpzone node attributes with atomics

Closes #4683

See merge request isc-projects/bind9!9033
This commit is contained in:
Evan Hunt 2024-05-17 00:33:48 +00:00
commit 6a9ac65f0c
1 changed files with 19 additions and 31 deletions
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50
lib/dns/qpzone.c
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@ -155,12 +155,10 @@ struct qpznode {
isc_refcount_t erefs;
uint16_t locknum;
void *data;
unsigned int : 0;
unsigned int nsec : 2; /*%< range is 0..3 */
unsigned int wild : 1;
unsigned int delegating : 1;
unsigned int dirty : 1;
unsigned int : 0;
atomic_uint_fast8_t nsec;
atomic_bool wild;
atomic_bool delegating;
atomic_bool dirty;
};
struct qpzonedb {
@ -882,7 +880,7 @@ clean_zone_node(qpznode_t *node, uint32_t least_serial) {
top_prev = current;
}
if (!still_dirty) {
node->dirty = 0;
node->dirty = false;
}
}
@ -1324,7 +1322,7 @@ rollback_node(qpznode_t *node, uint32_t serial) {
}
}
if (make_dirty) {
node->dirty = 1;
node->dirty = true;
}
}
@ -1968,7 +1966,7 @@ add(qpzonedb_t *qpdb, qpznode_t *node, const dns_name_t *nodename,
newheader->next = topheader->next;
newheader->down = topheader;
topheader->next = newheader;
node->dirty = 1;
node->dirty = true;
if (changed != NULL) {
changed->dirty = true;
}
@ -2014,7 +2012,7 @@ add(qpzonedb_t *qpdb, qpznode_t *node, const dns_name_t *nodename,
if (changed != NULL) {
changed->dirty = true;
}
node->dirty = 1;
node->dirty = true;
} else {
/*
* No rdatasets of the given type exist at the node.
@ -2055,14 +2053,12 @@ add(qpzonedb_t *qpdb, qpznode_t *node, const dns_name_t *nodename,
}
static void
wildcardmagic(qpzonedb_t *qpdb, dns_qp_t *qp, const dns_name_t *name,
bool lock) {
wildcardmagic(qpzonedb_t *qpdb, dns_qp_t *qp, const dns_name_t *name) {
isc_result_t result;
dns_name_t foundname;
dns_offsets_t offsets;
unsigned int n;
qpznode_t *node = NULL;
isc_rwlocktype_t nlocktype = isc_rwlocktype_none;
dns_name_init(&foundname, offsets);
n = dns_name_countlabels(name);
@ -2080,19 +2076,11 @@ wildcardmagic(qpzonedb_t *qpdb, dns_qp_t *qp, const dns_name_t *name,
qpznode_unref(node);
}
/* set the bit, locking if necessary */
if (lock) {
NODE_WRLOCK(&qpdb->node_locks[node->locknum].lock, &nlocktype);
}
node->wild = 1;
if (lock) {
NODE_UNLOCK(&qpdb->node_locks[node->locknum].lock, &nlocktype);
}
node->wild = true;
}
static void
addwildcards(qpzonedb_t *qpdb, dns_qp_t *qp, const dns_name_t *name,
bool lock) {
addwildcards(qpzonedb_t *qpdb, dns_qp_t *qp, const dns_name_t *name) {
dns_name_t foundname;
dns_offsets_t offsets;
unsigned int n, l, i;
@ -2104,7 +2092,7 @@ addwildcards(qpzonedb_t *qpdb, dns_qp_t *qp, const dns_name_t *name,
while (i < n) {
dns_name_getlabelsequence(name, n - i, i, &foundname);
if (dns_name_iswildcard(&foundname)) {
wildcardmagic(qpdb, qp, &foundname, lock);
wildcardmagic(qpdb, qp, &foundname);
}
i++;
@ -2136,7 +2124,7 @@ loading_addrdataset(void *arg, const dns_name_t *name,
if (rdataset->type != dns_rdatatype_nsec3 &&
rdataset->covers != dns_rdatatype_nsec3)
{
addwildcards(qpdb, loadctx->tree, name, false);
addwildcards(qpdb, loadctx->tree, name);
}
if (dns_name_iswildcard(name)) {
@ -2154,7 +2142,7 @@ loading_addrdataset(void *arg, const dns_name_t *name,
return (DNS_R_INVALIDNSEC3);
}
wildcardmagic(qpdb, loadctx->tree, name, false);
wildcardmagic(qpdb, loadctx->tree, name);
}
loading_addnode(loadctx, name, rdataset->type, rdataset->covers, &node);
@ -2193,7 +2181,7 @@ loading_addrdataset(void *arg, const dns_name_t *name,
if (result == ISC_R_SUCCESS &&
delegating_type(qpdb, node, rdataset->type))
{
node->delegating = 1;
node->delegating = true;
} else if (result == DNS_R_UNCHANGED) {
result = ISC_R_SUCCESS;
}
@ -2521,9 +2509,9 @@ findnodeintree(qpzonedb_t *qpdb, const dns_name_t *name, bool create,
if (nsec3) {
node->nsec = DNS_DB_NSEC_NSEC3;
} else {
addwildcards(qpdb, qp, name, true);
addwildcards(qpdb, qp, name);
if (dns_name_iswildcard(name)) {
wildcardmagic(qpdb, qp, name, true);
wildcardmagic(qpdb, qp, name);
}
}
}
@ -4738,7 +4726,7 @@ addrdataset(dns_db_t *db, dns_dbnode_t *dbnode, dns_dbversion_t *dbversion,
if (result == ISC_R_SUCCESS &&
delegating_type(qpdb, node, rdataset->type))
{
node->delegating = 1;
node->delegating = true;
}
NODE_UNLOCK(&qpdb->node_locks[node->locknum].lock, &nlocktype);
@ -4906,7 +4894,7 @@ subtractrdataset(dns_db_t *db, dns_dbnode_t *dbnode, dns_dbversion_t *dbversion,
newheader->next = topheader->next;
newheader->down = topheader;
topheader->next = newheader;
node->dirty = 1;
node->dirty = true;
changed->dirty = true;
resigndelete(qpdb, version, header DNS__DB_FLARG_PASS);
} else {