Use the correct root for shared jail when the source storage is also a jail

Signed-off-by: Robin Appelman <robin@icewind.nl>

1 files changed, 11 insertions, 0 deletions

diff --git a/lib/private/Files/Storage/Wrapper/Jail.php b/lib/private/Files/Storage/Wrapper/Jail.php
index 4fa2428c968..d7f244b7d31 100644
--- a/lib/private/Files/Storage/Wrapper/Jail.php
+++ b/lib/private/Files/Storage/Wrapper/Jail.php
@@ -58,6 +58,17 @@ class Jail extends Wrapper {
 		}
 	}
 
+	public function getJailedPath($path) {
+		$root = rtrim($this->rootPath, '/') . '/';
+
+		if (strpos($path, $root) !== 0) {
+			return null;
+		} else {
+			$path = substr($path, strlen($this->rootPath));
+			return trim($path, '/');
+		}
+	}
+
 	public function getId() {
 		return parent::getId();
 	}