5c47c6546c
Instead of returning the number of characters in the RelFileNumber, return the RelFileNumber itself. Continue to return the fork number, as before, and additionally return the segment number. parse_filename_for_nontemp_relation now rejects a RelFileNumber or segment number that begins with a leading zero. Before, we accepted such cases as relation filenames, but if we continued to do so after this change, the function might return the same values for two different files (e.g. 1234.5 and 001234.5 or 1234.005) which could be annoying for callers. Since we don't actually ever generate filenames with leading zeroes in the names, any such files that we find must have been created by something other than PostgreSQL, and it is therefore reasonable to treat them as non-relation files. Along the way, change unlogged_relation_entry to store a RelFileNumber rather than an OID. This update should have been made in 851f4cc75cdd8c831f1baa9a7abf8c8248b65890, but it was overlooked. It's trivial to make the update as part of this commit, perhaps more trivial than it would have been without it, so do that. Patch by me, reviewed by David Steele. Discussion: http://postgr.es/m/CA+TgmoZNVeBzoqDL8xvr-nkaepq815jtDR4nJzPew7=3iEuM1g@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/.