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Tom Lane de5e03f7fe Try again to work around Windows' ERROR_SHARING_VIOLATION in pg_ctl. 
Commit 0da33c762 introduced an unfortunate regression in pg_ctl on
Windows: if the log file specified with -l doesn't exist yet, and
pg_ctl is running with Administrator privileges, then the log file
might get created with permissions that prevent the postmaster from
writing on it.  (It seems that whether this happens depends on whether
the log file is inside the user's home directory or not, and perhaps
on other phase-of-the-moon conditions, which may explain why we failed
to notice it sooner.)

To fix, just don't create the log file if it doesn't exist yet.  The
case where we need to wait obviously only occurs with a pre-existing
log file.

In passing, switch from using fopen() to plain open(), saving a few
cycles.

Per bug #16259 from Jonathan Katz and Heath Lord.  Back-patch to v12,
as the faulty commit was.

Alexander Lakhin

Discussion: https://postgr.es/m/16259-c5ebed32a262a8b1@postgresql.org
2020-02-16 12:20:18 -05:00
config Update config.guess and config.sub 2019-04-27 14:25:00 +02:00
contrib In jsonb_plpython.c, suppress warning message from gcc 10. 2020-01-30 18:26:13 -05:00
doc Doc: fix old oversights in GRANT/REVOKE documentation. 2020-02-12 14:13:13 -05:00
src Try again to work around Windows' ERROR_SHARING_VIOLATION in pg_ctl. 2020-02-16 12:20:18 -05:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.gitattributes Add XSL stylesheet to fix up SVG files 2019-06-19 21:26:42 +02:00
.gitignore Support for optimizing and emitting code in LLVM JIT provider. 2018-03-22 11:05:22 -07:00
aclocal.m4 Fix configure's AC_CHECK_DECLS tests to work correctly with clang. 2018-11-19 12:01:47 -05:00
configure Stamp 12.2. 2020-02-10 17:14:51 -05:00
configure.in Stamp 12.2. 2020-02-10 17:14:51 -05:00
COPYRIGHT Update copyrights for 2020 2020-01-01 12:21:45 -05:00
GNUmakefile.in Integrate cpluspluscheck into build system. 2019-05-31 12:36:17 -07:00
HISTORY Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
Makefile Don't unset MAKEFLAGS in non-GNU Makefile. 2019-06-25 09:36:21 +12:00
README Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
README.git Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00

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:

	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/.