Introduce a config parameter to have an instance-level quota

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/private/Files/Storage/Common.php

@@ -61,6 +61,7 @@
 use OCP\Files\Storage\ILockingStorage;
 use OCP\Files\Storage\IStorage;
 use OCP\Files\Storage\IWriteStreamStorage;
+use OCP\IConfig;
 use OCP\Lock\ILockingProvider;
 use OCP\Lock\LockedException;
 use Psr\Log\LoggerInterface;
@@ -474,12 +475,20 @@ public function test() {
 	}
 
 	/**
-	 * get the free space in the storage
+	 * Get the free space in the storage
+	 *
+	 * In case the admin has overwritten the global instance quota, default to the quota instead of unknown
 	 *
 	 * @param string $path
 	 * @return int|false
 	 */
 	public function free_space($path) {
+		/** @var IConfig $config */
+		$config = \OC::$server->get(IConfig::class);
+		$configQuota = (int) $config->getAppValue('core', 'quota_instance_global', '0');
+		if ($configQuota > 0) {
+			return $configQuota;
+		}
 		return \OCP\Files\FileInfo::SPACE_UNKNOWN;
 	}
 

lib/private/legacy/OC_Helper.php

@@ -48,6 +48,7 @@
 use OCP\Files\Mount\IMountPoint;
 use OCP\ICacheFactory;
 use OCP\IBinaryFinder;
+use OCP\IConfig;
 use OCP\IUser;
 use Psr\Log\LoggerInterface;
 
@@ -486,6 +487,15 @@ public static function getStorageInfo($path, $rootInfo = null, $includeMountPoin
 			$used = 0;
 		}
 		$quota = \OCP\Files\FileInfo::SPACE_UNLIMITED;
+
+		// If the admin overrides the global instance quota we default to the value set
+		/** @var IConfig $config */
+		$config = \OC::$server->get(IConfig::class);
+		$configQuota = (int) $config->getAppValue('core', 'quota_instance_global', '0');
+		if ($configQuota > 0) {
+			$quota = $configQuota;
+		}
+
 		$mount = $rootInfo->getMountPoint();
 		$storage = $mount->getStorage();
 		$sourceStorage = $storage;