pg_parameter_acl.c File Reference

#include "postgres.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 68 of file pg_parameter_acl.c.

{
    Oid         parameterId;
    char       *parname;
    Relation    rel;
    TupleDesc   tupDesc;
    HeapTuple   tuple;
    Datum       values[Natts_pg_parameter_acl] = {0};
    bool        nulls[Natts_pg_parameter_acl] = {0};
 
    /*
     * To prevent cluttering pg_parameter_acl with useless entries, insist
     * that the name be valid.
     */
    check_GUC_name_for_parameter_acl(parameter);
 
    /* Convert name to the form it should have in pg_parameter_acl. */
    parname = convert_GUC_name_for_parameter_acl(parameter);
 
    /*
     * Create and insert a new record containing a null ACL.
     *
     * We don't take a strong enough lock to prevent concurrent insertions,
     * relying instead on the unique index.
     */
    rel = table_open(ParameterAclRelationId, RowExclusiveLock);
    tupDesc = RelationGetDescr(rel);
    parameterId = GetNewOidWithIndex(rel,
                                     ParameterAclOidIndexId,
                                     Anum_pg_parameter_acl_oid);
    values[Anum_pg_parameter_acl_oid - 1] = ObjectIdGetDatum(parameterId);
    values[Anum_pg_parameter_acl_parname - 1] =
        PointerGetDatum(cstring_to_text(parname));
    nulls[Anum_pg_parameter_acl_paracl - 1] = true;
    tuple = heap_form_tuple(tupDesc, values, nulls);
    CatalogTupleInsert(rel, tuple);
 
    /* Close pg_parameter_acl, but keep lock till commit. */
    heap_freetuple(tuple);
    table_close(rel, NoLock);
 
    return parameterId;
}

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 35 of file pg_parameter_acl.c.

{
    Oid         oid;
    char       *parname;
 
    /* Convert name to the form it should have in pg_parameter_acl... */
    parname = convert_GUC_name_for_parameter_acl(parameter);
 
    /* ... and look it up */
    oid = GetSysCacheOid1(PARAMETERACLNAME, Anum_pg_parameter_acl_oid,
                          PointerGetDatum(cstring_to_text(parname)));
 
    if (!OidIsValid(oid) && !missing_ok)
        ereport(ERROR,
                (errcode(ERRCODE_UNDEFINED_OBJECT),
                 errmsg("parameter ACL \"%s\" does not exist", parameter)));
 
    pfree(parname);
 
    return oid;
}

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().