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Add support for privileges on types

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This adds support for the more or less SQL-conforming USAGE privilege
on types and domains.  The intent is to be able restrict which users
can create dependencies on types, which restricts the way in which
owners can alter types.

reviewed by Yeb Havinga
This commit is contained in:
Peter Eisentraut
2011-12-20 00:05:19 +02:00
parent 05e992e90e
commit 729205571e
41 changed files with 1249 additions and 201 deletions
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24
src/backend/commands/operatorcmds.c
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@ -45,6 +45,7 @@
#include "parser/parse_func.h"
#include "parser/parse_oper.h"
#include "parser/parse_type.h"
#include "utils/builtins.h"
#include "utils/lsyscache.h"
#include "utils/rel.h"
#include "utils/syscache.h"
@ -73,6 +74,7 @@ DefineOperator(List *names, List *parameters)
TypeName *typeName2 = NULL; /* second type name */
Oid typeId1 = InvalidOid; /* types converted to OID */
Oid typeId2 = InvalidOid;
Oid rettype;
List *commutatorName = NIL; /* optional commutator operator name */
List *negatorName = NIL; /* optional negator operator name */
List *restrictionName = NIL; /* optional restrict. sel. procedure */
@ -175,6 +177,22 @@ DefineOperator(List *names, List *parameters)
(errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
errmsg("at least one of leftarg or rightarg must be specified")));
if (typeName1)
{
aclresult = pg_type_aclcheck(typeId1, GetUserId(), ACL_USAGE);
if (aclresult != ACLCHECK_OK)
aclcheck_error(aclresult, ACL_KIND_TYPE,
format_type_be(typeId1));
}
if (typeName2)
{
aclresult = pg_type_aclcheck(typeId2, GetUserId(), ACL_USAGE);
if (aclresult != ACLCHECK_OK)
aclcheck_error(aclresult, ACL_KIND_TYPE,
format_type_be(typeId2));
}
/*
* Look up the operator's underlying function.
*/
@ -206,6 +224,12 @@ DefineOperator(List *names, List *parameters)
aclcheck_error(aclresult, ACL_KIND_PROC,
NameListToString(functionName));
rettype = get_func_rettype(functionOid);
aclresult = pg_type_aclcheck(rettype, GetUserId(), ACL_USAGE);
if (aclresult != ACLCHECK_OK)
aclcheck_error(aclresult, ACL_KIND_TYPE,
format_type_be(rettype));
/*
* Look up restriction estimator if specified
*/