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Nathan Bossart d4a43b2837 Convert libpgport's pqsignal() to a void function. 
The protections added by commit 3b00fdba9f introduced race
conditions to this function that can lead to bogus return values.
Since nobody seems to inspect the return value, this is of little
consequence, but it would have been nice to convert it to a void
function to avoid any possibility of a bogus return value.  I
originally thought that doing so would have required also modifying
legacy-pqsignal.c's version of the function (which would've
required an SONAME bump), but commit 9a45a89c38 gave
legacy-pqsignal.c its own dedicated extern for pqsignal(), thereby
decoupling it enough that libpgport's pqsignal() can be modified.

This commit also adds an assertion for the return value of
sigaction()/signal().  Since a failure most likely indicates a
coding error, and nobody has ever bothered to check pqsignal()'s
return value, it's probably not worth the effort to do anything
fancier.

Reviewed-by: Tom Lane
Discussion: https://postgr.es/m/Z4chOKfnthRH71mw%40nathan
2025-01-16 16:41:05 -06:00
.github Add CODE_OF_CONDUCT.md, CONTRIBUTING.md, and SECURITY.md. 2024-07-02 13:03:58 -05:00
config Remove useless configure check 2025-01-05 11:34:28 +01:00
contrib Add OLD/NEW support to RETURNING in DML queries. 2025-01-16 14:57:35 +00:00
doc Seek zone abbreviations in the IANA data before timezone_abbreviations. 2025-01-16 14:11:19 -05:00
src Convert libpgport's pqsignal() to a void function. 2025-01-16 16:41:05 -06:00
.cirrus.star Remove duplicate words in docs and code comments. 2023-10-09 09:18:47 +05:30
.cirrus.tasks.yml ci: Fix cached MacPorts installation management 2024-11-27 11:51:54 -05:00
.cirrus.yml ci: Make compute resources for CI configurable 2023-08-23 15:15:28 -07:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.editorconfig Add .editorconfig 2019-12-18 09:13:13 +01:00
.git-blame-ignore-revs Add commit 6e826278f1 to .git-blame-ignore-revs. 2025-01-13 09:37:32 -06:00
.gitattributes gitattributes: Add .cpp files to whitespace checks 2024-11-27 11:20:46 +01:00
.gitignore Update top-level .gitignore. 2022-12-04 15:23:00 -05:00
.mailmap Add a Git .mailmap file 2024-11-05 13:56:02 +01:00
aclocal.m4 autoconf: Move export_dynamic determination to configure 2022-12-06 18:55:28 -08:00
configure Remove useless configure check 2025-01-05 11:34:28 +01:00
configure.ac Update copyright for 2025 2025-01-01 11:21:55 -05:00
COPYRIGHT Update copyright for 2025 2025-01-01 11:21:55 -05:00
GNUmakefile.in Allow selecting the git revision to be packaged by "make dist". 2024-05-03 11:08:50 -04:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Remove AIX support 2024-02-28 15:17:23 +04:00
meson.build Fix meson detection of a couple of 64 bit builtins. 2025-01-08 07:19:46 +13:00
meson_options.txt Update copyright for 2025 2025-01-01 11:21:55 -05:00
README.md Revise the style of a paragraph in README.md. 2024-03-21 10:16:41 -05:00

README.md

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/.