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This patch adds new default roles named 'pg_read_server_files', 'pg_write_server_files', 'pg_execute_server_program' which allow an administrator to GRANT to a non-superuser role the ability to access server-side files or run programs through PostgreSQL (as the user the database is running as). Having one of these roles allows a non-superuser to use server-side COPY to read, write, or with a program, and to use file_fdw (if installed by a superuser and GRANT'd USAGE on it) to read from files or run a program. The existing misc file functions are also changed to allow a user with the 'pg_read_server_files' default role to read any files on the filesystem, matching the privileges given to that role through COPY and file_fdw from above. Reviewed-By: Michael Paquier Discussion: https://postgr.es/m/20171231191939.GR2416%40tamriel.snowman.net |
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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/.