From f73bed308a8ccaea9082634f417966f7beb71614 Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Tue, 24 Feb 2009 01:38:10 +0000 Subject: [PATCH] Repair a longstanding bug in CLUSTER and the rewriting variants of ALTER TABLE: if the command is executed by someone other than the table owner (eg, a superuser) and the table has a toast table, the toast table's pg_type row ends up with the wrong typowner, ie, the command issuer not the table owner. This is quite harmless for most purposes, since no interesting permissions checks consult the pg_type row. However, it could lead to unexpected failures if one later tries to drop the role that issued the command (in 8.1 or 8.2), or strange warnings from pg_dump afterwards (in 8.3 and up, which will allow the DROP ROLE because we don't create a "redundant" owner dependency for table rowtypes). Problem identified by Cott Lang. Back-patch to 8.1. The problem is actually far older --- the CLUSTER variant can be demonstrated in 7.0 --- but it's mostly cosmetic before 8.1 because we didn't track ownership dependencies before 8.1. Also, fixing it before 8.1 would require changing the call signature of heap_create_with_catalog(), which seems to carry a nontrivial risk of breaking add-on modules. --- src/backend/catalog/heap.c | 7 ++++++- src/backend/catalog/pg_type.c | 15 ++++++++------- src/backend/commands/functioncmds.c | 4 ++-- src/backend/commands/typecmds.c | 9 +++++++-- src/include/catalog/pg_type_fn.h | 7 +++++-- 5 files changed, 28 insertions(+), 14 deletions(-) diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c index b01edbe017..70083b52a6 100644 --- a/src/backend/catalog/heap.c +++ b/src/backend/catalog/heap.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/catalog/heap.c,v 1.350 2009/01/22 20:16:01 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/catalog/heap.c,v 1.351 2009/02/24 01:38:09 tgl Exp $ * * * INTERFACE ROUTINES @@ -79,6 +79,7 @@ static Oid AddNewRelationType(const char *typeName, Oid typeNamespace, Oid new_rel_oid, char new_rel_kind, + Oid ownerid, Oid new_array_type); static void RelationRemoveInheritance(Oid relid); static void StoreRelCheck(Relation rel, char *ccname, Node *expr, @@ -784,6 +785,7 @@ AddNewRelationType(const char *typeName, Oid typeNamespace, Oid new_rel_oid, char new_rel_kind, + Oid ownerid, Oid new_array_type) { return @@ -792,6 +794,7 @@ AddNewRelationType(const char *typeName, typeNamespace, /* type namespace */ new_rel_oid, /* relation oid */ new_rel_kind, /* relation kind */ + ownerid, /* owner's ID */ -1, /* internal size (varlena) */ TYPTYPE_COMPOSITE, /* type-type (composite) */ TYPCATEGORY_COMPOSITE, /* type-category (ditto) */ @@ -955,6 +958,7 @@ heap_create_with_catalog(const char *relname, relnamespace, relid, relkind, + ownerid, new_array_oid); /* @@ -971,6 +975,7 @@ heap_create_with_catalog(const char *relname, relnamespace, /* Same namespace as parent */ InvalidOid, /* Not composite, no relationOid */ 0, /* relkind, also N/A here */ + ownerid, /* owner's ID */ -1, /* Internal size (varlena) */ TYPTYPE_BASE, /* Not composite - typelem is */ TYPCATEGORY_ARRAY, /* type-category (array) */ diff --git a/src/backend/catalog/pg_type.c b/src/backend/catalog/pg_type.c index 6d28b1df2f..c7daed4e32 100644 --- a/src/backend/catalog/pg_type.c +++ b/src/backend/catalog/pg_type.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/catalog/pg_type.c,v 1.124 2009/01/22 20:16:01 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/catalog/pg_type.c,v 1.125 2009/02/24 01:38:09 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -47,7 +47,7 @@ * ---------------------------------------------------------------- */ Oid -TypeShellMake(const char *typeName, Oid typeNamespace) +TypeShellMake(const char *typeName, Oid typeNamespace, Oid ownerId) { Relation pg_type_desc; TupleDesc tupDesc; @@ -87,7 +87,7 @@ TypeShellMake(const char *typeName, Oid typeNamespace) namestrcpy(&name, typeName); values[i++] = NameGetDatum(&name); /* typname */ values[i++] = ObjectIdGetDatum(typeNamespace); /* typnamespace */ - values[i++] = ObjectIdGetDatum(GetUserId()); /* typowner */ + values[i++] = ObjectIdGetDatum(ownerId); /* typowner */ values[i++] = Int16GetDatum(sizeof(int4)); /* typlen */ values[i++] = BoolGetDatum(true); /* typbyval */ values[i++] = CharGetDatum(TYPTYPE_PSEUDO); /* typtype */ @@ -134,7 +134,7 @@ TypeShellMake(const char *typeName, Oid typeNamespace) typoid, InvalidOid, 0, - GetUserId(), + ownerId, F_SHELL_IN, F_SHELL_OUT, InvalidOid, @@ -173,6 +173,7 @@ TypeCreate(Oid newTypeOid, Oid typeNamespace, Oid relationOid, /* only for relation rowtypes */ char relationKind, /* ditto */ + Oid ownerId, int16 internalSize, char typeType, char typeCategory, @@ -310,7 +311,7 @@ TypeCreate(Oid newTypeOid, namestrcpy(&name, typeName); values[i++] = NameGetDatum(&name); /* typname */ values[i++] = ObjectIdGetDatum(typeNamespace); /* typnamespace */ - values[i++] = ObjectIdGetDatum(GetUserId()); /* typowner */ + values[i++] = ObjectIdGetDatum(ownerId); /* typowner */ values[i++] = Int16GetDatum(internalSize); /* typlen */ values[i++] = BoolGetDatum(passedByValue); /* typbyval */ values[i++] = CharGetDatum(typeType); /* typtype */ @@ -380,7 +381,7 @@ TypeCreate(Oid newTypeOid, /* * shell type must have been created by same owner */ - if (((Form_pg_type) GETSTRUCT(tup))->typowner != GetUserId()) + if (((Form_pg_type) GETSTRUCT(tup))->typowner != ownerId) aclcheck_error(ACLCHECK_NOT_OWNER, ACL_KIND_TYPE, typeName); /* trouble if caller wanted to force the OID */ @@ -426,7 +427,7 @@ TypeCreate(Oid newTypeOid, typeObjectId, relationOid, relationKind, - GetUserId(), + ownerId, inputProcedure, outputProcedure, receiveProcedure, diff --git a/src/backend/commands/functioncmds.c b/src/backend/commands/functioncmds.c index a813fd9a02..f913f3b766 100644 --- a/src/backend/commands/functioncmds.c +++ b/src/backend/commands/functioncmds.c @@ -10,7 +10,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/commands/functioncmds.c,v 1.107 2009/01/06 02:01:27 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/commands/functioncmds.c,v 1.108 2009/02/24 01:38:09 tgl Exp $ * * DESCRIPTION * These routines take the parse tree and pick out the @@ -144,7 +144,7 @@ compute_return_type(TypeName *returnType, Oid languageOid, if (aclresult != ACLCHECK_OK) aclcheck_error(aclresult, ACL_KIND_NAMESPACE, get_namespace_name(namespaceId)); - rettype = TypeShellMake(typname, namespaceId); + rettype = TypeShellMake(typname, namespaceId, GetUserId()); Assert(OidIsValid(rettype)); } diff --git a/src/backend/commands/typecmds.c b/src/backend/commands/typecmds.c index ca87b15068..03e08f1b4c 100644 --- a/src/backend/commands/typecmds.c +++ b/src/backend/commands/typecmds.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/commands/typecmds.c,v 1.131 2009/02/02 19:31:39 alvherre Exp $ + * $PostgreSQL: pgsql/src/backend/commands/typecmds.c,v 1.132 2009/02/24 01:38:09 tgl Exp $ * * DESCRIPTION * The "DefineFoo" routines take the parse tree and pick out the @@ -199,7 +199,7 @@ DefineType(List *names, List *parameters) */ if (!OidIsValid(typoid)) { - typoid = TypeShellMake(typeName, typeNamespace); + typoid = TypeShellMake(typeName, typeNamespace, GetUserId()); /* Make new shell type visible for modification below */ CommandCounterIncrement(); @@ -536,6 +536,7 @@ DefineType(List *names, List *parameters) typeNamespace, /* namespace */ InvalidOid, /* relation oid (n/a here) */ 0, /* relation kind (ditto) */ + GetUserId(), /* owner's ID */ internalLength, /* internal size */ TYPTYPE_BASE, /* type-type (base type) */ category, /* type-category */ @@ -574,6 +575,7 @@ DefineType(List *names, List *parameters) typeNamespace, /* namespace */ InvalidOid, /* relation oid (n/a here) */ 0, /* relation kind (ditto) */ + GetUserId(), /* owner's ID */ -1, /* internal size (always varlena) */ TYPTYPE_BASE, /* type-type (base type) */ TYPCATEGORY_ARRAY, /* type-category (array) */ @@ -1018,6 +1020,7 @@ DefineDomain(CreateDomainStmt *stmt) domainNamespace, /* namespace */ InvalidOid, /* relation oid (n/a here) */ 0, /* relation kind (ditto) */ + GetUserId(), /* owner's ID */ internalLength, /* internal size */ TYPTYPE_DOMAIN, /* type-type (domain type) */ category, /* type-category */ @@ -1131,6 +1134,7 @@ DefineEnum(CreateEnumStmt *stmt) enumNamespace, /* namespace */ InvalidOid, /* relation oid (n/a here) */ 0, /* relation kind (ditto) */ + GetUserId(), /* owner's ID */ sizeof(Oid), /* internal size */ TYPTYPE_ENUM, /* type-type (enum type) */ TYPCATEGORY_ENUM, /* type-category (enum type) */ @@ -1169,6 +1173,7 @@ DefineEnum(CreateEnumStmt *stmt) enumNamespace, /* namespace */ InvalidOid, /* relation oid (n/a here) */ 0, /* relation kind (ditto) */ + GetUserId(), /* owner's ID */ -1, /* internal size (always varlena) */ TYPTYPE_BASE, /* type-type (base type) */ TYPCATEGORY_ARRAY, /* type-category (array) */ diff --git a/src/include/catalog/pg_type_fn.h b/src/include/catalog/pg_type_fn.h index dd0695cf10..11409cf349 100644 --- a/src/include/catalog/pg_type_fn.h +++ b/src/include/catalog/pg_type_fn.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/catalog/pg_type_fn.h,v 1.3 2009/01/01 17:23:58 momjian Exp $ + * $PostgreSQL: pgsql/src/include/catalog/pg_type_fn.h,v 1.4 2009/02/24 01:38:10 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -17,13 +17,16 @@ #include "nodes/nodes.h" -extern Oid TypeShellMake(const char *typeName, Oid typeNamespace); +extern Oid TypeShellMake(const char *typeName, + Oid typeNamespace, + Oid ownerId); extern Oid TypeCreate(Oid newTypeOid, const char *typeName, Oid typeNamespace, Oid relationOid, char relationKind, + Oid ownerId, int16 internalSize, char typeType, char typeCategory, -- 2.11.0