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Tom Lane 1e24cf645d Don't leave pg_hba and pg_ident data lying around in running backends. 
Free the contexts holding this data after we're done using it, by the
expedient of attaching them to the PostmasterContext which we were
already taking care to delete (and where, indeed, this data used to live
before commits e5e2fc842c and 7c45e3a3c6).  This saves a
probably-usually-negligible amount of space per running backend.  It also
avoids leaving potentially-security-sensitive data lying around in memory
in processes that don't need it.  You'd have to be unusually paranoid to
think that that amounts to a live security bug, so I've not gone so far as
to forcibly zero the memory; but there surely isn't a good reason to keep
this data around.

Arguably this is a memory management bug in the aforementioned commits,
but it doesn't seem important enough to back-patch.
2015-07-01 18:55:39 -04:00
config Remove configure check prohibiting threaded libpython on OpenBSD. 2015-05-26 22:14:59 -04:00
contrib Fix test_decoding's handling of nonexistant columns in old tuple versions. 2015-06-27 19:00:45 +02:00
doc Fix broken link in documentation. 2015-06-30 18:47:32 -04:00
src Don't leave pg_hba and pg_ident data lying around in running backends. 2015-07-01 18:55:39 -04:00
.dir-locals.el emacs: Set indent-tabs-mode in perl-mode 2015-04-12 23:53:23 -04:00
.gitattributes Add functions for dealing with PGP armor header lines to pgcrypto. 2014-10-01 16:03:39 +03:00
.gitignore Improve speed of make check-world 2015-04-23 08:59:52 -04:00
aclocal.m4 Remove cvs keywords from all files. 2010-09-20 22:08:53 +02:00
configure Stamp HEAD as 9.6devel. 2015-06-30 14:01:15 -04:00
configure.in Stamp HEAD as 9.6devel. 2015-06-30 14:01:15 -04:00
COPYRIGHT Update copyright for 2015 2015-01-06 11:43:47 -05:00
GNUmakefile.in Fix distclean/maintainer-clean targets to remove top-level tmp_install dir. 2015-05-13 18:48:05 -04:00
HISTORY Improve text of stub HISTORY file. 2014-02-12 18:16:17 -05:00
Makefile Allow make check in PL directories 2011-02-15 06:52:12 +02:00
README Don't generate plain-text HISTORY and src/test/regress/README anymore. 2014-02-10 20:48:04 -05:00
README.git Don't generate plain-text HISTORY and src/test/regress/README anymore. 2014-02-10 20:48:04 -05:00

README 

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:

	http://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
http://www.postgresql.org/download/.  For more information look at our
web site located at http://www.postgresql.org/.