diff options
Diffstat (limited to 'upgrade.php')
| -rw-r--r-- | upgrade.php | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/upgrade.php b/upgrade.php index a58fcdc96..c5f158c61 100644 --- a/upgrade.php +++ b/upgrade.php @@ -9,6 +9,8 @@ * new version of the script. Deleting the script is not a requirement and * leaving it behind does not affect the security of the site. * + * Upgrades use a table {db_prefix}upgrade_lock as a mutex to prevent concurrent upgrades. + * * @package Elgg.Core * @subpackage Upgrade */ @@ -20,9 +22,9 @@ define('UPGRADING', 'upgrading'); require_once(dirname(__FILE__) . "/engine/start.php"); if (get_input('upgrade') == 'upgrade') { - // prevent someone from running the upgrade script in parallel (see #4643) if (!_elgg_upgrade_lock()) { + register_error(elgg_echo('upgrade:locked')); forward(); } @@ -40,7 +42,6 @@ if (get_input('upgrade') == 'upgrade') { elgg_invalidate_simplecache(); elgg_reset_system_cache(); - // critical region has past _elgg_upgrade_unlock(); } else { |