bde3a46160
This change has the advantage of removing some weird type casts, caused by offset calculations based on pgoff_t but saved as int (on older branches we use off_t, which could be 4 or 8 bytes depending on the environment). These are safe currently because capped by MAX_PHYSICAL_FILESIZE, but we would run into problems when to make MAX_PHYSICAL_FILESIZE larger or allow callers of these routines to use a larger physical max size on demand. While on it, this improves BufFileDumpBuffer() so as we do not use an offset for "availbytes". It is not a file offset per-set, but a number of available bytes. This change should lead to no functional changes. Author: Chao Li <li.evan.chao@gmail.com> Discussion: https://postgr.es/m/aUStrqoOCDRFAq1M@paquier.xyz
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.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.