diff options
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/pltcl.sgml | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/doc/src/sgml/pltcl.sgml b/doc/src/sgml/pltcl.sgml index c4ea226a7fe..5a425a8cb44 100644 --- a/doc/src/sgml/pltcl.sgml +++ b/doc/src/sgml/pltcl.sgml @@ -1,4 +1,4 @@ -<!-- $PostgreSQL: pgsql/doc/src/sgml/pltcl.sgml,v 2.49 2010/04/03 07:22:55 petere Exp $ --> +<!-- $PostgreSQL: pgsql/doc/src/sgml/pltcl.sgml,v 2.50 2010/05/13 18:29:12 tgl Exp $ --> <chapter id="pltcl"> <title>PL/Tcl - Tcl Procedural Language</title> @@ -689,8 +689,10 @@ CREATE TRIGGER trig_mytab_modcount BEFORE INSERT OR UPDATE ON mytab It recognizes a special table, <literal>pltcl_modules</>, which is presumed to contain modules of Tcl code. If this table exists, the module <literal>unknown</> is fetched from the table - and loaded into the Tcl interpreter immediately after creating - the interpreter. + and loaded into the Tcl interpreter immediately before the first + execution of a PL/Tcl function in a database session. (This + happens separately for PL/Tcl and PL/TclU, if both are used, + because separate interpreters are used for the two languages.) </para> <para> While the <literal>unknown</> module could actually contain any @@ -717,7 +719,11 @@ CREATE TRIGGER trig_mytab_modcount BEFORE INSERT OR UPDATE ON mytab <para> The tables <literal>pltcl_modules</> and <literal>pltcl_modfuncs</> must be readable by all, but it is wise to make them owned and - writable only by the database administrator. + writable only by the database administrator. As a security + precaution, PL/Tcl will ignore <literal>pltcl_modules</> (and thus, + not attempt to load the <literal>unknown</> module) unless it is + owned by a superuser. But update privileges on this table can be + granted to other users, if you trust them sufficiently. </para> </sect1> |