This file is indexed.

/usr/share/postgresql/10/extension/sslinfo--1.0--1.1.sql is in postgresql-10 10.6-0ubuntu0.18.04.1.

This file is owned by root:root, with mode 0o644.

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/* contrib/sslinfo/sslinfo--1.0--1.1.sql */

-- complain if script is sourced in psql, rather than via CREATE EXTENSION
\echo Use "ALTER EXTENSION sslinfo UPDATE TO '1.1'" to load this file. \quit

CREATE FUNCTION
ssl_extension_info(OUT name text,
	OUT value text,
    OUT critical boolean
) RETURNS SETOF record
AS 'MODULE_PATHNAME', 'ssl_extension_info'
LANGUAGE C STRICT;