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Allow removal of system-named pg_* temp tables. Rename temp file/dir as
pgsql_tmp.
This commit is contained in:
Bruce Momjian
parent
0bba6bdb8a
commit
49ce6fff1d
@ -8,7 +8,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/catalog/aclchk.c,v 1.50 2001/06/09 23:21:54 petere Exp $
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* $Header: /cvsroot/pgsql/src/backend/catalog/aclchk.c,v 1.51 2001/06/18 16:13:21 momjian Exp $
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*
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* NOTES
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* See acl.h.
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@ -32,6 +32,7 @@
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#include "parser/parse_func.h"
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#include "utils/acl.h"
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#include "utils/syscache.h"
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#include "utils/temprel.h"
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static int32 aclcheck(Acl *acl, AclId id, AclIdType idtype, AclMode mode);
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@ -437,7 +438,7 @@ pg_aclcheck(char *relname, Oid userid, AclMode mode)
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*/
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if ((mode & (ACL_INSERT | ACL_UPDATE | ACL_DELETE)) &&
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!allowSystemTableMods && IsSystemRelationName(relname) &&
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strncmp(relname, "pg_temp.", strlen("pg_temp.")) != 0 &&
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!is_temp_relname(relname) &&
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!((Form_pg_shadow) GETSTRUCT(tuple))->usecatupd)
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{
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#ifdef ACLDEBUG
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@ -8,7 +8,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/catalog/heap.c,v 1.167 2001/06/12 05:55:49 tgl Exp $
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* $Header: /cvsroot/pgsql/src/backend/catalog/heap.c,v 1.168 2001/06/18 16:13:21 momjian Exp $
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*
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*
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* INTERFACE ROUTINES
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@ -281,8 +281,8 @@ heap_create(char *relname,
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* replace relname of caller with a unique name for a temp
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* relation
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*/
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snprintf(relname, NAMEDATALEN, "pg_temp.%d.%u",
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(int) MyProcPid, uniqueId++);
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snprintf(relname, NAMEDATALEN, "%s_%d_%u",
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PG_TEMP_REL_PREFIX, (int) MyProcPid, uniqueId++);
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}
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/*
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@ -874,37 +874,6 @@ heap_create_with_catalog(char *relname,
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}
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/* ----------------------------------------------------------------
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* heap_drop_with_catalog - removes all record of named relation from catalogs
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*
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* 1) open relation, check for existence, etc.
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* 2) remove inheritance information
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* 3) remove indexes
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* 4) remove pg_class tuple
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* 5) remove pg_attribute tuples and related descriptions
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* 6) remove pg_description tuples
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* 7) remove pg_type tuples
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* 8) RemoveConstraints ()
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* 9) unlink relation
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*
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* old comments
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* Except for vital relations, removes relation from
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* relation catalog, and related attributes from
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* attribute catalog (needed?). (Anything else?)
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*
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* get proper relation from relation catalog (if not arg)
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* scan attribute catalog deleting attributes of reldesc
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* (necessary?)
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* delete relation from relation catalog
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* (How are the tuples of the relation discarded?)
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*
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* XXX Must fix to work with indexes.
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* There may be a better order for doing things.
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* Problems with destroying a deleted database--cannot create
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* a struct reldesc without having an open file descriptor.
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* ----------------------------------------------------------------
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*/
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/* --------------------------------
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* RelationRemoveInheritance
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*
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@ -1334,10 +1303,35 @@ DeleteTypeTuple(Relation rel)
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heap_close(pg_type_desc, RowExclusiveLock);
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}
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/* --------------------------------
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* heap_drop_with_catalog
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/* ----------------------------------------------------------------
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* heap_drop_with_catalog - removes all record of named relation from catalogs
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*
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* --------------------------------
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* 1) open relation, check for existence, etc.
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* 2) remove inheritance information
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* 3) remove indexes
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* 4) remove pg_class tuple
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* 5) remove pg_attribute tuples and related descriptions
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* 6) remove pg_description tuples
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* 7) remove pg_type tuples
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* 8) RemoveConstraints ()
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* 9) unlink relation
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*
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* old comments
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* Except for vital relations, removes relation from
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* relation catalog, and related attributes from
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* attribute catalog (needed?). (Anything else?)
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*
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* get proper relation from relation catalog (if not arg)
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* scan attribute catalog deleting attributes of reldesc
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* (necessary?)
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* delete relation from relation catalog
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* (How are the tuples of the relation discarded?)
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*
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* XXX Must fix to work with indexes.
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* There may be a better order for doing things.
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* Problems with destroying a deleted database--cannot create
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* a struct reldesc without having an open file descriptor.
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* ----------------------------------------------------------------
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*/
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void
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heap_drop_with_catalog(const char *relname,
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@ -1360,8 +1354,10 @@ heap_drop_with_catalog(const char *relname,
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* prevent deletion of system relations
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*/
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/* allow temp of pg_class? Guess so. */
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if (!istemp && !allow_system_table_mods &&
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IsSystemRelationName(RelationGetRelationName(rel)))
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if (!istemp &&
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!allow_system_table_mods &&
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IsSystemRelationName(RelationGetRelationName(rel)) &&
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!is_temp_relname(RelationGetRelationName(rel)))
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elog(ERROR, "System relation \"%s\" may not be dropped",
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RelationGetRelationName(rel));
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@ -7,7 +7,7 @@
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/storage/file/fd.c,v 1.81 2001/06/11 04:12:29 tgl Exp $
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* $Header: /cvsroot/pgsql/src/backend/storage/file/fd.c,v 1.82 2001/06/18 16:13:21 momjian Exp $
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*
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* NOTES:
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*
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@ -54,8 +54,8 @@
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/* Filename components for OpenTemporaryFile */
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#define PG_TEMP_FILES_DIR "pg_tempfiles"
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#define PG_TEMP_FILE_PREFIX "pg_temp"
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#define PG_TEMP_FILES_DIR "pgsql_tmp"
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#define PG_TEMP_FILE_PREFIX "pgsql_tmp"
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/*
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@ -10,7 +10,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/tcop/utility.c,v 1.113 2001/06/09 23:21:54 petere Exp $
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* $Header: /cvsroot/pgsql/src/backend/tcop/utility.c,v 1.114 2001/06/18 16:13:21 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -46,6 +46,7 @@
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#include "utils/acl.h"
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#include "utils/ps_status.h"
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#include "utils/syscache.h"
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#include "utils/temprel.h"
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#include "access/xlog.h"
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/*
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@ -120,7 +121,8 @@ CheckDropPermissions(char *name, char rightkind)
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elog(ERROR, "you do not own %s \"%s\"",
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rentry->name, name);
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if (!allowSystemTableMods && IsSystemRelationName(name))
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if (!allowSystemTableMods && IsSystemRelationName(name) &&
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!is_temp_relname(name))
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elog(ERROR, "%s \"%s\" is a system %s",
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rentry->name, name, rentry->name);
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@ -7,7 +7,7 @@
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* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $Id: temprel.h,v 1.15 2001/03/22 04:01:14 momjian Exp $
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* $Id: temprel.h,v 1.16 2001/06/18 16:13:21 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -16,6 +16,11 @@
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#include "access/htup.h"
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#define PG_TEMP_REL_PREFIX "pg_temp"
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#define is_temp_relname(relname) \
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(strncmp(relname, PG_TEMP_REL_PREFIX, strlen(PG_TEMP_REL_PREFIX)) == 0)
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extern void create_temp_relation(const char *relname,
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HeapTuple pg_class_tuple);
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extern void remove_temp_rel_by_relid(Oid relid);
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