Ability to customise the piwik/tmp directory path in config/config.ini.php file (#12189)

config/global.ini.php

@@ -135,7 +135,6 @@ enabled = 0
 disable_merged_assets = 0
 
 [General]
-
 ; the following settings control whether Unique Visitors `nb_uniq_visitors` and Unique users `nb_users` will be processed for different period types.
 ; year and range periods are disabled by default, to ensure optimal performance for high traffic Piwik instances
 ; if you set it to 1 and want the Unique Visitors to be re-processed for reports in the past, drop all piwik_archive_* tables
@@ -573,6 +572,10 @@ enable_custom_logo_check = 1
 ; absolute path to the chroot environment. eg. '/path/to/piwik/chrooted/'
 absolute_chroot_path =
 
+; The path (relative to the Piwik directory) in which Piwik temporary files are stored.
+; Defaults to ./tmp (the tmp/ folder inside the Piwik directory)
+tmp_path = "/tmp"
+
 ; In some rare cases it may be useful to explicitely tell Piwik not to use LOAD DATA INFILE
 ; This may for example be useful when doing Mysql AWS replication
 enable_load_data_infile = 1

config/global.php

@@ -4,6 +4,7 @@ use Interop\Container\ContainerInterface;
 use Interop\Container\Exception\NotFoundException;
 use Piwik\Cache\Eager;
 use Piwik\SettingsServer;
+use Piwik\Config;
 
 return array(
 
@@ -19,8 +20,10 @@ return array(
         } else {
             $instanceId = '';
         }
-
-        return $root . '/tmp' . $instanceId;
+        
+        $tmp = Config::getInstance()->General['tmp_path'];
+        
+        return $root . $tmp . $instanceId;
     },
 
     'path.cache' => DI\string('{path.tmp}/cache/tracker/'),