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Restrict pgrowlocks function to superusers. (This might be too strict,

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but no permissions check at all is certainly no good.)  Clean up usage
of some deprecated APIs.
This commit is contained in:
Tom Lane
2007-08-27 00:13:51 +00:00
parent 38c75ecf83
commit 56f3fb3ba1
4 changed files with 26 additions and 61 deletions
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14
contrib/pgrowlocks/README.pgrowlocks
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@@ -1,4 +1,4 @@
$PostgreSQL: pgsql/contrib/pgrowlocks/README.pgrowlocks,v 1.1 2006/04/23 01:12:58 ishii Exp $
$PostgreSQL: pgsql/contrib/pgrowlocks/README.pgrowlocks,v 1.2 2007/08/27 00:13:51 tgl Exp $
pgrowlocks README Tatsuo Ishii
@@ -6,16 +6,14 @@ pgrowlocks README Tatsuo Ishii
pgrowlocks shows row locking information for specified table.
pgrowlocks returns following data type:
pgrowlocks returns following columns:
CREATE TYPE pgrowlocks_type AS (
locked_row TID, -- row TID
lock_type TEXT, -- lock type
locker XID, -- locking XID
multi bool, -- multi XID?
xids xid[], -- multi XIDs
pids INTEGER[] -- locker's process id
);
Here is a sample execution of pgrowlocks:
@@ -62,14 +60,6 @@ test=# SELECT * FROM pgrowlocks('t1');
3. How to use pgrowlocks
The calling sequence for pgrowlocks is as follows:
CREATE OR REPLACE FUNCTION pgrowlocks(text) RETURNS pgrowlocks_type
AS 'MODULE_PATHNAME', 'pgrowlocks'
LANGUAGE 'c' WITH (isstrict);
The parameter is a name of table. pgrowlocks returns type pgrowlocks_type.
pgrowlocks grab AccessShareLock for the target table and read each
row one by one to get the row locking information. You should
notice that: