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Refactor dir/file permissions

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Consolidate directory and file create permissions for tools which work
with the PG data directory by adding a new module (common/file_perm.c)
that contains variables (pg_file_create_mode, pg_dir_create_mode) and
constants to initialize them (0600 for files and 0700 for directories).

Convert mkdir() calls in the backend to MakePGDirectory() if the
original call used default permissions (always the case for regular PG
directories).

Add tests to make sure permissions in PGDATA are set correctly by the
tools which modify the PG data directory.

Authors: David Steele <david@pgmasters.net>,
         Adam Brightwell <adam.brightwell@crunchydata.com>
Reviewed-By: Michael Paquier, with discussion amongst many others.
Discussion: https://postgr.es/m/ad346fe6-b23e-59f1-ecb7-0e08390ad629%40pgmasters.net
This commit is contained in:
Stephen Frost
2018-04-07 17:45:39 -04:00
parent 499be013de
commit da9b580d89
34 changed files with 330 additions and 75 deletions
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18
src/bin/pg_ctl/t/001_start_stop.pl
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@@ -4,7 +4,7 @@ use warnings;
use Config;
use PostgresNode;
use TestLib;
use Test::More tests => 19;
use Test::More tests => 21;
my $tempdir = TestLib::tempdir;
my $tempdir_short = TestLib::tempdir_short;
@@ -57,9 +57,23 @@ command_ok([ 'pg_ctl', 'stop', '-D', "$tempdir/data" ], 'pg_ctl stop');
command_fails([ 'pg_ctl', 'stop', '-D', "$tempdir/data" ],
'second pg_ctl stop fails');
# Log file for default permission test. The permissions won't be checked on
# Windows but we still want to do the restart test.
my $logFileName = "$tempdir/data/perm-test-600.log";
command_ok(
[ 'pg_ctl', 'restart', '-D', "$tempdir/data" ],
[ 'pg_ctl', 'restart', '-D', "$tempdir/data", '-l', $logFileName ],
'pg_ctl restart with server not running');
# Permissions on log file should be default
SKIP:
{
skip "unix-style permissions not supported on Windows", 2 if ($windows_os);
ok(-f $logFileName);
ok(check_mode_recursive("$tempdir/data", 0700, 0600));
}
command_ok([ 'pg_ctl', 'restart', '-D', "$tempdir/data" ],
'pg_ctl restart with server running');