From 66bc0f0848846bce3680b79da4209d42620f1b8d Mon Sep 17 00:00:00 2001
From: Vincent Petry <pvince81@owncloud.com>
Date: Wed, 19 Mar 2014 19:07:11 +0100
Subject: [PATCH] Still return quota value when free space is unknown

Fixed the quota storage wrapper to correctly return the quota value when
the free space is not known (which usually happens when the disk_free_space
function is disabled)
---
 lib/private/files/storage/wrapper/quota.php |  9 ++++++++-
 tests/lib/files/storage/wrapper/quota.php   | 18 ++++++++++++++++++
 2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/lib/private/files/storage/wrapper/quota.php b/lib/private/files/storage/wrapper/quota.php
index 32ceba8b19..a878b2c5cf 100644
--- a/lib/private/files/storage/wrapper/quota.php
+++ b/lib/private/files/storage/wrapper/quota.php
@@ -69,7 +69,14 @@ class Quota extends Wrapper {
 				return \OC\Files\SPACE_NOT_COMPUTED;
 			} else {
 				$free = $this->storage->free_space($path);
-				return min($free, (max($this->quota - $used, 0)));
+				$quotaFree = max($this->quota - $used, 0);
+				// if free space is known
+				if ($free >= 0) {
+					$free = min($free, $quotaFree);
+				} else {
+					$free = $quotaFree;
+				}
+				return $free;
 			}
 		}
 	}
diff --git a/tests/lib/files/storage/wrapper/quota.php b/tests/lib/files/storage/wrapper/quota.php
index bd2c69a739..777529fd85 100644
--- a/tests/lib/files/storage/wrapper/quota.php
+++ b/tests/lib/files/storage/wrapper/quota.php
@@ -61,6 +61,24 @@ class Quota extends \Test\Files\Storage\Storage {
 		$this->assertEquals(6, $instance->free_space(''));
 	}
 
+	public function testFreeSpaceWithUnknownDiskSpace() {
+		$storage = $this->getMock(
+			'\OC\Files\Storage\Local',
+			array('free_space'),
+			array(array('datadir' => $this->tmpDir))
+		);
+		$storage->expects($this->any())
+			->method('free_space')
+			->will($this->returnValue(-2));
+		$storage->getScanner()->scan('');
+
+		$instance = new \OC\Files\Storage\Wrapper\Quota(array('storage' => $storage, 'quota' => 9));
+		$instance->getCache()->put(
+			'', array('size' => 3, 'unencrypted_size' => 0)
+		);
+		$this->assertEquals(6, $instance->free_space(''));
+	}
+
 	public function testFreeSpaceWithUsedSpaceAndEncryption() {
 		$instance = $this->getLimitedStorage(9);
 		$instance->getCache()->put(