From fb1974cc6b58cd21a269dd7ab8aea0120906ec3b Mon Sep 17 00:00:00 2001
From: Tom Lane
Date: Thu, 8 May 2014 21:45:02 -0400
Subject: Document permissions needed for pg_database_size and
 pg_tablespace_size.

Back in 8.3, we installed permissions checks in these functions (see
commits 8bc225e7990a and cc26599b7206).  But we forgot to document that
anywhere in the user-facing docs; it did get mentioned in the 8.3 release
notes, but nobody's looking at that any more.  Per gripe from Suya Huang.
---
 doc/src/sgml/func.sgml | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index d04dd747af8..5126f14eb6a 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -16946,7 +16946,11 @@ postgres=# SELECT * FROM pg_xlogfile_name_offset(pg_stop_backup());
    <para>
     <function>pg_database_size</function> and <function>pg_tablespace_size</>
     accept the OID or name of a database or tablespace, and return the total
-    disk space used therein.
+    disk space used therein.  To use <function>pg_database_size</function>,
+    you must have <literal>CONNECT</> permission on the specified database
+    (which is granted by default).  To use <function>pg_tablespace_size</>,
+    you must have <literal>CREATE</> permission on the specified tablespace,
+    unless it is the default tablespace for the current database.
    </para>
 
    <para>
-- 
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