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replace dns_slabheader_raw() with a flexible array member

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we can use header->raw instead of dns_slabheader_raw().
This commit is contained in:
Evan Hunt 2025-08-17 15:54:03 -07:00 committed by Ondřej Surý
parent 712ef31a0c
commit 727fb9a011
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GPG Key ID: 2820F37E873DEA41
4 changed files with 13 additions and 18 deletions
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12
lib/dns/include/dns/rdataslab.h
View File

@ -143,6 +143,12 @@ struct dns_slabheader {
* rendering that character upper case.
*/
unsigned char upper[32];
/*%
* Flexible member indicates the address of the raw data
* following this header.
*/
unsigned char raw[];
};
enum {
@ -278,12 +284,6 @@ dns_rdataslab_equalx(dns_slabheader_t *header1, dns_slabheader_t *header2,
*\li true if the slabs are equal, #false otherwise.
*/
void *
dns_slabheader_raw(dns_slabheader_t *header);
/*%
* Returns the address of the raw memory following a dns_slabheader.
*/
void
dns_slabheader_setownercase(dns_slabheader_t *header, const dns_name_t *name);
/*%<

10
lib/dns/qpcache.c
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@ -1072,7 +1072,7 @@ bindrdataset(qpcache_t *qpdb, qpcnode_t *node, dns_slabheader_t *header,
rdataset->slab.db = (dns_db_t *)qpdb;
rdataset->slab.node = (dns_dbnode_t *)node;
rdataset->slab.raw = dns_slabheader_raw(header);
rdataset->slab.raw = header->raw;
rdataset->slab.iter_pos = NULL;
rdataset->slab.iter_count = 0;
@ -2913,8 +2913,8 @@ addnoqname(isc_mem_t *mctx, dns_slabheader_t *newheader, uint32_t maxrrperset,
noqname = isc_mem_get(mctx, sizeof(*noqname));
*noqname = (dns_slabheader_proof_t){
.neg = dns_slabheader_raw((dns_slabheader_t *)r1.base),
.negsig = dns_slabheader_raw((dns_slabheader_t *)r2.base),
.neg = ((dns_slabheader_t *)r1.base)->raw,
.negsig = ((dns_slabheader_t *)r2.base)->raw,
.type = neg.type,
.name = DNS_NAME_INITEMPTY,
};
@ -2952,8 +2952,8 @@ addclosest(isc_mem_t *mctx, dns_slabheader_t *newheader, uint32_t maxrrperset,
closest = isc_mem_get(mctx, sizeof(*closest));
*closest = (dns_slabheader_proof_t){
.neg = dns_slabheader_raw((dns_slabheader_t *)r1.base),
.negsig = dns_slabheader_raw((dns_slabheader_t *)r2.base),
.neg = ((dns_slabheader_t *)r1.base)->raw,
.negsig = ((dns_slabheader_t *)r2.base)->raw,
.name = DNS_NAME_INITEMPTY,
.type = neg.type,
};

4
lib/dns/qpzone.c
View File

@ -1042,7 +1042,7 @@ bindrdataset(qpzonedb_t *qpdb, qpznode_t *node, dns_slabheader_t *header,
rdataset->slab.db = (dns_db_t *)qpdb;
rdataset->slab.node = (dns_dbnode_t *)node;
rdataset->slab.raw = dns_slabheader_raw(header);
rdataset->slab.raw = header->raw;
rdataset->slab.iter_pos = NULL;
rdataset->slab.iter_count = 0;
@ -1110,7 +1110,7 @@ setnsec3parameters(dns_db_t *db, qpz_version_t *version) {
/*
* Find an NSEC3PARAM with a supported algorithm.
*/
raw = dns_slabheader_raw(found);
raw = found->raw;
count = get_uint16(raw);
while (count-- > 0U) {
dns_rdata_t rdata = DNS_RDATA_INIT;

5
lib/dns/rdataslab.c
View File

@ -800,11 +800,6 @@ dns_rdataslab_equalx(dns_slabheader_t *slab1, dns_slabheader_t *slab2,
return true;
}
void *
dns_slabheader_raw(dns_slabheader_t *header) {
return header + 1;
}
void
dns_slabheader_setownercase(dns_slabheader_t *header, const dns_name_t *name) {
REQUIRE(!CASESET(header));