1 files changed, 25 insertions, 5 deletions

diff --git a/apps/files_sharing/lib/MountProvider.php b/apps/files_sharing/lib/MountProvider.php
index bfb40387622..d85d796c722 100644
--- a/apps/files_sharing/lib/MountProvider.php
+++ b/apps/files_sharing/lib/MountProvider.php
@@ -38,6 +38,7 @@ use OCP\ICacheFactory;
 use OCP\IConfig;
 use OCP\ILogger;
 use OCP\IUser;
+use OCP\Share\IAttributes;
 use OCP\Share\IManager;
 use OCP\Share\IShare;
 
@@ -228,14 +229,32 @@ class MountProvider implements IMountProvider {
 				->setTarget($shares[0]->getTarget());
 
 			// use most permissive permissions
-			$permissions = 0;
+			// this covers the case where there are multiple shares for the same
+			// file e.g. from different groups and different permissions
+			$superPermissions = 0;
+			$superAttributes = $this->shareManager->newShare()->newAttributes();
 			$status = IShare::STATUS_PENDING;
 			foreach ($shares as $share) {
-				$permissions |= $share->getPermissions();
+				$superPermissions |= $share->getPermissions();
 				$status = max($status, $share->getStatus());
+				// update permissions
+				$superPermissions |= $share->getPermissions();
+
+				// update share permission attributes
+				$attributes = $share->getAttributes();
+				if ($attributes !== null) {
+					foreach ($attributes->toArray() as $attribute) {
+						if ($superAttributes->getAttribute($attribute['scope'], $attribute['key']) === true) {
+							// if super share attribute is already enabled, it is most permissive
+							continue;
+						}
+						// update supershare attributes with subshare attribute
+						$superAttributes->setAttribute($attribute['scope'], $attribute['key'], $attribute['enabled']);
+					}
+				}
 
+				// adjust target, for database consistency if needed
 				if ($share->getTarget() !== $superShare->getTarget()) {
-					// adjust target, for database consistency
 					$share->setTarget($superShare->getTarget());
 					try {
 						$this->shareManager->moveShare($share, $user->getUID());
@@ -260,8 +279,9 @@ class MountProvider implements IMountProvider {
 				}
 			}
 
-			$superShare->setPermissions($permissions)
-				->setStatus($status);
+			$superShare->setPermissions($superPermissions);
+			$superShare->setStatus($status);
+			$superShare->setAttributes($superAttributes);
 
 			$result[] = [$superShare, $shares];
 		}