add free_space to OC_FILESYSTEM

lib/filestorage.php

@@ -75,6 +75,7 @@ class OC_FILESTORAGE{
 	public function find($path){}
 	public function getTree($path){}
 	public function hash($type,$path,$raw){}
+	public function free_space($path){}
 }
 
 
@@ -466,6 +467,10 @@ class OC_FILESTORAGE_LOCAL extends OC_FILESTORAGE{
 		}
 		return $return;
 	}
+	
+	public function free_space($path){
+		return disk_free_space($this->datadir.$path);
+	}
 
 	/**
 	 * @brief get the size of folder and it's content

lib/filesystem.php

@@ -386,5 +386,11 @@ class OC_FILESYSTEM{
 			return $storage->hash($type,self::getInternalPath($path),$raw);
 		}
 	}
+	
+	static public function free_space($path='/'){
+		if(self::canRead($path) and $storage=self::getStorage($path)){
+			return $storage->free_space($path);
+		}
+	}
 }
 ?>

settings/index.php

@@ -10,7 +10,7 @@ if( !OC_USER::isLoggedIn()){
 
 $tmpl = new OC_TEMPLATE( "settings", "index", "admin");
 $used=OC_FILESYSTEM::filesize('/');
-$free=disk_free_space(OC_CONFIG::getValue('datadirectory'));
+$free=OC_FILESYSTEM::free_space();
 $total=$free+$used;
 $relative=round(($used/$total)*100);
 $tmpl->assign('usage',OC_HELPER::humanFileSize($used));