45f5c81ad2
If sendFileWithContent were used to send a file larger than the bbsink buffer size, this would result in corruption. The only files that are sent via sendFileWithContent are the backup label file, the tablespace map file, and .done files for WAL segments included in the backup. Of these, it seems that only the tablespace_map file can become large enough to cause a problem, and then only if you have a lot of tablespaces. If you do have that situation, you might end up with a corrupted tablespace_map file, which would be bad. My commit bef47ff85df18bf4a3a9b13bd2a54820e27f3614 introduced this problem. Report and patch by Antonin Houska. Discussion: http://postgr.es/m/15764.1670528645@antos
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/.