diff options
Diffstat (limited to 'contrib/pageinspect/btreefuncs.c')
| -rw-r--r-- | contrib/pageinspect/btreefuncs.c | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/contrib/pageinspect/btreefuncs.c b/contrib/pageinspect/btreefuncs.c index ab80b54500..85935b9990 100644 --- a/contrib/pageinspect/btreefuncs.c +++ b/contrib/pageinspect/btreefuncs.c @@ -1,5 +1,5 @@ /* - * $PostgreSQL: pgsql/contrib/pageinspect/btreefuncs.c,v 1.8 2008/05/17 01:28:19 adunstan Exp $ + * $PostgreSQL: pgsql/contrib/pageinspect/btreefuncs.c,v 1.9 2009/03/31 22:54:31 tgl Exp $ * * * btreefuncs.c @@ -190,6 +190,16 @@ bt_page_stats(PG_FUNCTION_ARGS) elog(ERROR, "relation \"%s\" is not a btree index", RelationGetRelationName(rel)); + /* + * Reject attempts to read non-local temporary relations; we would + * be likely to get wrong data since we have no visibility into the + * owning session's local buffers. + */ + if (RELATION_IS_OTHER_TEMP(rel)) + ereport(ERROR, + (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), + errmsg("cannot access temporary tables of other sessions"))); + if (blkno == 0) elog(ERROR, "block 0 is a meta page"); @@ -298,6 +308,16 @@ bt_page_items(PG_FUNCTION_ARGS) elog(ERROR, "relation \"%s\" is not a btree index", RelationGetRelationName(rel)); + /* + * Reject attempts to read non-local temporary relations; we would + * be likely to get wrong data since we have no visibility into the + * owning session's local buffers. + */ + if (RELATION_IS_OTHER_TEMP(rel)) + ereport(ERROR, + (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), + errmsg("cannot access temporary tables of other sessions"))); + if (blkno == 0) elog(ERROR, "block 0 is a meta page"); @@ -437,6 +457,16 @@ bt_metap(PG_FUNCTION_ARGS) elog(ERROR, "relation \"%s\" is not a btree index", RelationGetRelationName(rel)); + /* + * Reject attempts to read non-local temporary relations; we would + * be likely to get wrong data since we have no visibility into the + * owning session's local buffers. + */ + if (RELATION_IS_OTHER_TEMP(rel)) + ereport(ERROR, + (errcode(ERRCODE_FEATURE_NOT_SUPPORTED), + errmsg("cannot access temporary tables of other sessions"))); + buffer = ReadBuffer(rel, 0); page = BufferGetPage(buffer); metad = BTPageGetMeta(page); |