/usr/share/postgresql/10/extension/adminpack--1.0.sql is in postgresql-10 10.6-0ubuntu0.18.04.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 | /* contrib/adminpack/adminpack--1.0.sql */
-- complain if script is sourced in psql, rather than via CREATE EXTENSION
\echo Use "CREATE EXTENSION adminpack" to load this file. \quit
/* ***********************************************
* Administrative functions for PostgreSQL
* *********************************************** */
/* generic file access functions */
CREATE FUNCTION pg_catalog.pg_file_write(text, text, bool)
RETURNS bigint
AS 'MODULE_PATHNAME', 'pg_file_write'
LANGUAGE C VOLATILE STRICT;
CREATE FUNCTION pg_catalog.pg_file_rename(text, text, text)
RETURNS bool
AS 'MODULE_PATHNAME', 'pg_file_rename'
LANGUAGE C VOLATILE;
CREATE FUNCTION pg_catalog.pg_file_rename(text, text)
RETURNS bool
AS 'SELECT pg_catalog.pg_file_rename($1, $2, NULL::pg_catalog.text);'
LANGUAGE SQL VOLATILE STRICT;
CREATE FUNCTION pg_catalog.pg_file_unlink(text)
RETURNS bool
AS 'MODULE_PATHNAME', 'pg_file_unlink'
LANGUAGE C VOLATILE STRICT;
CREATE FUNCTION pg_catalog.pg_logdir_ls()
RETURNS setof record
AS 'MODULE_PATHNAME', 'pg_logdir_ls'
LANGUAGE C VOLATILE STRICT;
/* Renaming of existing backend functions for pgAdmin compatibility */
CREATE FUNCTION pg_catalog.pg_file_read(text, bigint, bigint)
RETURNS text
AS 'pg_read_file'
LANGUAGE INTERNAL VOLATILE STRICT;
CREATE FUNCTION pg_catalog.pg_file_length(text)
RETURNS bigint
AS 'SELECT size FROM pg_catalog.pg_stat_file($1)'
LANGUAGE SQL VOLATILE STRICT;
CREATE FUNCTION pg_catalog.pg_logfile_rotate()
RETURNS int4
AS 'pg_rotate_logfile'
LANGUAGE INTERNAL VOLATILE STRICT;
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