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This code was trying to be paranoid, but it wasn't paranoid enough. It only ensured that the selected port is in 0..65535, while most Unix systems will refuse unprivileged attempts to use TCP port numbers below 1024. Change it to allow specification of ports 1024..65535, while if the port is outside that range, map it into 49152..65535 which is the port range used by our later branches. The main reason we've not noticed this up to now is that it's not important when testing over Unix-socket connections, only TCP, and most of our test code deliberately prevents the postmaster from opening any TCP ports. However, the SSL tests do open up a TCP port, and I believe this explains why buildfarm member chipmunk has been failing the SSL tests in 9.5: it's picking a reserved port number. Patch in 9.5 and 9.4. Later branches do not use this code. |
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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: https://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. 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 https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.