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[PGPRO-13804] Save original RTEPermissionInfo array before adding a new element#284

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26 changes: 26 additions & 0 deletionssrc/partition_filter.c
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Original file line numberDiff line numberDiff line change
Expand Up@@ -51,6 +51,9 @@ typedef struct
{
intestate_alloc_result_rels;/* number of allocated result rels */
boolestate_not_modified;/* did we modify EState somehow? */
#if PG_VERSION_NUM >= 160000
boolperminfo_not_modified;/* did we change the estate->es_rteperminfos field? */
#endif
} estate_mod_data;

/*
Expand DownExpand Up@@ -95,6 +98,9 @@ static Node *fix_returning_list_mutator(Node *node, void *state);

static Index append_rte_to_estate(EState *estate, RangeTblEntry *rte, Relation child_rel);
static int append_rri_to_estate(EState *estate, ResultRelInfo *rri);
#if PG_VERSION_NUM >= 160000
static void prepare_estate_for_append_perminfo(EState *estate);
#endif

static void pf_memcxt_callback(void *arg);
static estate_mod_data * fetch_estate_mod_data(EState *estate);
Expand DownExpand Up@@ -337,6 +343,7 @@ scan_result_parts_storage(EState *estate, ResultPartsStorage *parts_storage,
parent_perminfo = getRTEPermissionInfo(estate->es_rteperminfos, init_rte);

child_rte->perminfoindex = 0;/* expected by addRTEPermissionInfo() */
prepare_estate_for_append_perminfo(estate);
child_perminfo = addRTEPermissionInfo(&estate->es_rteperminfos, child_rte);
child_perminfo->requiredPerms= parent_perminfo->requiredPerms;
child_perminfo->checkAsUser= parent_perminfo->checkAsUser;
Expand DownExpand Up@@ -1449,6 +1456,22 @@ fix_returning_list_mutator(Node *node, void *state)
* -------------------------------------
*/

#if PG_VERSION_NUM >= 160000
/* Prepare estate->es_rteperminfos for append RTEPermissionInfo */
static void
prepare_estate_for_append_perminfo(EState *estate)
{
estate_mod_data *emd_struct = fetch_estate_mod_data(estate);

/* Copy estate->es_rteperminfos if it's first time expansion. */
if (emd_struct->perminfo_not_modified)
estate->es_rteperminfos = list_copy(estate->es_rteperminfos);

/* Update estate_mod_data. */
emd_struct->perminfo_not_modified = false;
}
#endif

/* Append RangeTblEntry 'rte' to estate->es_range_table */
static Index
append_rte_to_estate(EState *estate, RangeTblEntry *rte, Relation child_rel)
Expand DownExpand Up@@ -1594,6 +1617,9 @@ fetch_estate_mod_data(EState *estate)
/* Have to create a new one */
emd_struct = MemoryContextAlloc(estate_mcxt, sizeof(estate_mod_data));
emd_struct->estate_not_modified = true;
#if PG_VERSION_NUM >= 160000
emd_struct->perminfo_not_modified = true;
#endif
#if PG_VERSION_NUM >= 140000
/*
* Reworked in commit a04daa97a433: field "es_num_result_relations"
Expand Down
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