PostgreSQL Source Code git master
Functions
pg_parameter_acl.c File Reference
#include "postgres.h"
#include "access/htup_details.h"
#include "access/table.h"
#include "catalog/catalog.h"
#include "catalog/indexing.h"
#include "catalog/pg_parameter_acl.h"
#include "utils/builtins.h"
#include "utils/guc.h"
#include "utils/rel.h"
#include "utils/syscache.h"
Include dependency graph for pg_parameter_acl.c:

Go to the source code of this file.

Functions

Oid  ParameterAclLookup (const char *parameter, bool missing_ok)
 
Oid  ParameterAclCreate (const char *parameter)
 

Function Documentation

◆ ParameterAclCreate()

Oid ParameterAclCreate ( const char *  parameter )

Definition at line 69 of file pg_parameter_acl.c.

70{
71 Oid parameterId;
72 char *parname;
73 Relation rel;
74 TupleDesc tupDesc;
75 HeapTuple tuple;
76 Datum values[Natts_pg_parameter_acl] = {0};
77 bool nulls[Natts_pg_parameter_acl] = {0};
78
79 /*
80 * To prevent cluttering pg_parameter_acl with useless entries, insist
81 * that the name be valid.
82 */
84
85 /* Convert name to the form it should have in pg_parameter_acl. */
86 parname = convert_GUC_name_for_parameter_acl(parameter);
87
88 /*
89 * Create and insert a new record containing a null ACL.
90 *
91 * We don't take a strong enough lock to prevent concurrent insertions,
92 * relying instead on the unique index.
93 */
94 rel = table_open(ParameterAclRelationId, RowExclusiveLock);
95 tupDesc = RelationGetDescr(rel);
96 parameterId = GetNewOidWithIndex(rel,
97 ParameterAclOidIndexId,
98 Anum_pg_parameter_acl_oid);
99 values[Anum_pg_parameter_acl_oid - 1] = ObjectIdGetDatum(parameterId);
100 values[Anum_pg_parameter_acl_parname - 1] =
102 nulls[Anum_pg_parameter_acl_paracl - 1] = true;
103 tuple = heap_form_tuple(tupDesc, values, nulls);
104 CatalogTupleInsert(rel, tuple);
105
106 /* Close pg_parameter_acl, but keep lock till commit. */
107 heap_freetuple(tuple);
108 table_close(rel, NoLock);
109
110 return parameterId;
111}
static Datum values[MAXATTR]
Definition: bootstrap.c:153
Oid GetNewOidWithIndex(Relation relation, Oid indexId, AttrNumber oidcolumn)
Definition: catalog.c:448
void check_GUC_name_for_parameter_acl(const char *name)
Definition: guc.c:1412
char * convert_GUC_name_for_parameter_acl(const char *name)
Definition: guc.c:1376
HeapTuple heap_form_tuple(TupleDesc tupleDescriptor, const Datum *values, const bool *isnull)
Definition: heaptuple.c:1117
void heap_freetuple(HeapTuple htup)
Definition: heaptuple.c:1435
void CatalogTupleInsert(Relation heapRel, HeapTuple tup)
Definition: indexing.c:233
#define NoLock
Definition: lockdefs.h:34
#define RowExclusiveLock
Definition: lockdefs.h:38
static Datum PointerGetDatum(const void *X)
Definition: postgres.h:332
static Datum ObjectIdGetDatum(Oid X)
Definition: postgres.h:262
uint64_t Datum
Definition: postgres.h:70
unsigned int Oid
Definition: postgres_ext.h:32
#define RelationGetDescr(relation)
Definition: rel.h:540
Definition: rel.h:56
void table_close(Relation relation, LOCKMODE lockmode)
Definition: table.c:126
Relation table_open(Oid relationId, LOCKMODE lockmode)
Definition: table.c:40
text * cstring_to_text(const char *s)
Definition: varlena.c:181

References CatalogTupleInsert(), check_GUC_name_for_parameter_acl(), convert_GUC_name_for_parameter_acl(), cstring_to_text(), GetNewOidWithIndex(), heap_form_tuple(), heap_freetuple(), NoLock, ObjectIdGetDatum(), PointerGetDatum(), RelationGetDescr, RowExclusiveLock, table_close(), table_open(), and values.

Referenced by objectNamesToOids().

◆ ParameterAclLookup()

Oid ParameterAclLookup ( const char *  parameter,
bool  missing_ok 
)

Definition at line 36 of file pg_parameter_acl.c.

37{
38 Oid oid;
39 char *parname;
40
41 /* Convert name to the form it should have in pg_parameter_acl... */
42 parname = convert_GUC_name_for_parameter_acl(parameter);
43
44 /* ... and look it up */
45 oid = GetSysCacheOid1(PARAMETERACLNAME, Anum_pg_parameter_acl_oid,
47
48 if (!OidIsValid(oid) && !missing_ok)
50 (errcode(ERRCODE_UNDEFINED_OBJECT),
51 errmsg("parameter ACL \"%s\" does not exist", parameter)));
52
53 pfree(parname);
54
55 return oid;
56}
#define OidIsValid(objectId)
Definition: c.h:774
int errcode(int sqlerrcode)
Definition: elog.c:854
int errmsg(const char *fmt,...)
Definition: elog.c:1071
#define ERROR
Definition: elog.h:39
#define ereport(elevel,...)
Definition: elog.h:150
void pfree(void *pointer)
Definition: mcxt.c:1594
#define GetSysCacheOid1(cacheId, oidcol, key1)
Definition: syscache.h:109

References convert_GUC_name_for_parameter_acl(), cstring_to_text(), ereport, errcode(), errmsg(), ERROR, GetSysCacheOid1, OidIsValid, pfree(), and PointerGetDatum().

Referenced by get_object_address_unqualified(), and objectNamesToOids().

AltStyle によって変換されたページ (->オリジナル) /