653b55b570
In the past, FileRead() and FileWrite() used types based on the Unix read() and write() functions from before C and POSIX standardization, though not exactly (we had int for amount instead of unsigned). In commit 2d4f1ba6 we changed to the appropriate standard C types, just like the modern POSIX functions they wrap, but again not exactly: the return type stayed as int. In theory, a ssize_t value could be returned by the underlying call that is too large for an int. That wasn't really a live bug, because we don't expect PostgreSQL code to perform reads or writes of gigabytes, and OSes probably apply internal caps smaller than that anyway. This change is done on the principle that the return might as well follow the standard interfaces consistently. Reported-by: Tom Lane <tgl@sss.pgh.pa.us> Reviewed-by: Peter Eisentraut <peter@eisentraut.org> Discussion: https://postgr.es/m/1672202.1703441340%40sss.pgh.pa.us
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/.