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I've been working with Nick Phillips on an issue he ran into when trying to use threads with SSL client certificates. As it turns out, the call in initialize_SSL() to SSL_CTX_use_certificate_chain_file() will modify our SSL_context without any protection from other threads also calling that function or being at some other point and trying to read from SSL_context. To protect against this, I've written up the attached (based on an initial patch from Nick and much subsequent discussion) which puts locks around SSL_CTX_use_certificate_chain_file() and all of the other users of SSL_context which weren't already protected. Nick Phillips, much reworked by Stephen Frost Back-patch to 9.0 where we started loading the cert directly instead of using a callback.
PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: http://www.postgresql.org/download See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Changes between all PostgreSQL releases are recorded in the file HISTORY. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.