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Support toasting of shared system relations, and provide toast tables for

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pg_database, pg_shadow, pg_group, all of which now have potentially-long
fields.  Along the way, get rid of SharedSystemRelationNames list: shared
rels are now identified in their include/pg_catalog/*.h files by a
BKI_SHARED_RELATION macro, while indexes and toast rels inherit sharedness
automatically from their parent table.  Fix some bugs with failure to detoast
pg_group.grolist during ALTER GROUP.
This commit is contained in:
Tom Lane
2002-04-27 21:24:34 +00:00
parent 108871f4fc
commit c06f6a6bc2
27 changed files with 403 additions and 531 deletions
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40
src/backend/commands/dbcommands.c
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@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/dbcommands.c,v 1.87 2002/04/21 00:26:42 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/dbcommands.c,v 1.88 2002/04/27 21:24:34 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -475,11 +475,14 @@ AlterDatabaseSet(AlterDatabaseSetStmt *stmt)
elog(ERROR, "permission denied");
MemSet(repl_repl, ' ', sizeof(repl_repl));
repl_repl[Anum_pg_database_datconfig-1] = 'r';
if (strcmp(stmt->variable, "all")==0 && stmt->value == NULL)
{
/* RESET ALL */
repl_null[Anum_pg_database_datconfig-1] = 'n';
repl_val[Anum_pg_database_datconfig-1] = (Datum) 0;
}
else
{
Datum datum;
@ -491,16 +494,12 @@ AlterDatabaseSet(AlterDatabaseSetStmt *stmt)
datum = heap_getattr(tuple, Anum_pg_database_datconfig,
RelationGetDescr(rel), &isnull);
a = isnull ? ((ArrayType *) NULL) : DatumGetArrayTypeP(datum);
if (valuestr)
a = GUCArrayAdd(isnull
? NULL
: (ArrayType *) pg_detoast_datum((struct varlena *)datum),
stmt->variable, valuestr);
a = GUCArrayAdd(a, stmt->variable, valuestr);
else
a = GUCArrayDelete(isnull
? NULL
: (ArrayType *) pg_detoast_datum((struct varlena *)datum),
stmt->variable);
a = GUCArrayDelete(a, stmt->variable);
repl_val[Anum_pg_database_datconfig-1] = PointerGetDatum(a);
}
@ -546,8 +545,6 @@ get_db_info(const char *name, Oid *dbIdP, int4 *ownerIdP,
if (gottuple)
{
Form_pg_database dbform = (Form_pg_database) GETSTRUCT(tuple);
text *tmptext;
bool isnull;
/* oid of the database */
if (dbIdP)
@ -573,16 +570,21 @@ get_db_info(const char *name, Oid *dbIdP, int4 *ownerIdP,
/* database path (as registered in pg_database) */
if (dbpath)
{
tmptext = DatumGetTextP(heap_getattr(tuple,
Anum_pg_database_datpath,
RelationGetDescr(relation),
&isnull));
Datum datum;
bool isnull;
datum = heap_getattr(tuple,
Anum_pg_database_datpath,
RelationGetDescr(relation),
&isnull);
if (!isnull)
{
Assert(VARSIZE(tmptext) - VARHDRSZ < MAXPGPATH);
text *pathtext = DatumGetTextP(datum);
int pathlen = VARSIZE(pathtext) - VARHDRSZ;
strncpy(dbpath, VARDATA(tmptext), VARSIZE(tmptext) - VARHDRSZ);
*(dbpath + VARSIZE(tmptext) - VARHDRSZ) = '\0';
Assert(pathlen >= 0 && pathlen < MAXPGPATH);
strncpy(dbpath, VARDATA(pathtext), pathlen);
*(dbpath + pathlen) = '\0';
}
else
strcpy(dbpath, "");