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# Copyright (c) 2021-2025, PostgreSQL Global Development Group
use strict;
use warnings FATAL => 'all';
use PostgreSQL::Test::Cluster;
use PostgreSQL::Test::Utils;
use Test::More;
program_help_ok('pg_controldata');
program_version_ok('pg_controldata');
program_options_handling_ok('pg_controldata');
command_fails(['pg_controldata'], 'pg_controldata without arguments fails');
command_fails([ 'pg_controldata', 'nonexistent' ],
'pg_controldata with nonexistent directory fails');
my $node = PostgreSQL::Test::Cluster->new('main');
$node->init;
command_like([ 'pg_controldata', $node->data_dir ],
qr/checkpoint/, 'pg_controldata produces output');
# Check with a corrupted pg_control
#
# To corrupt it, overwrite most of it with zeros. We leave the
# beginning portion that contains the pg_control version number (first
# 16 bytes) unmodified because otherwise you get an error about the
# version number, instead of checksum mismatch.
my $pg_control = $node->data_dir . '/global/pg_control';
my $size = -s $pg_control;
open my $fh, '+<', $pg_control or BAIL_OUT($!);
binmode $fh;
my ($overwrite_off, $overwrite_len) = (16, $size - 16);
seek $fh, $overwrite_off, 0 or BAIL_OUT($!);
print $fh pack("x[$overwrite_len]");
close $fh;
command_checks_all(
[ 'pg_controldata', $node->data_dir ],
0,
[qr/./],
[
qr/warning: calculated CRC checksum does not match value stored in control file/,
qr/warning: invalid WAL segment size/
],
'pg_controldata with corrupted pg_control');
done_testing();
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