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For a long time (since commit aed378e8d) we have had a policy to log nothing about a connection if the client disconnects when challenged for a password. This is because libpq-using clients will typically do that, and then come back for a new connection attempt once they've collected a password from their user, so that logging the abandoned connection attempt will just result in log spam. However, this did not work well for PAM authentication: the bottom-level function pam_passwd_conv_proc() was on board with it, but we logged messages at higher levels anyway, for lack of any reporting mechanism. Add a flag and tweak the logic so that the case is silent, as it is for other password-using auth mechanisms. Per complaint from Yoann La Cancellera. It's been like this for awhile, so back-patch to all supported branches. Discussion: https://postgr.es/m/CACP=ajbrFFYUrLyJBLV8=q+eNCapa1xDEyvXhMoYrNphs-xqPw@mail.gmail.com
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/.