only determine is sharing is disabled for a user once

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

apps/files_sharing/lib/MountProvider.php

@@ -87,6 +87,7 @@ class MountProvider implements IMountProvider {
 		$mounts = [];
 		$view = new View('/' . $user->getUID() . '/files');
 		$ownerViews = [];
+		$sharingDisabledForUser = $this->shareManager->sharingDisabledForUser($user->getUID());
 		foreach ($superShares as $share) {
 			try {
 				/** @var \OCP\Share\IShare $parentShare */
@@ -104,7 +105,8 @@ class MountProvider implements IMountProvider {
 						'superShare' => $parentShare,
 						// children/component of the superShare
 						'groupedShares' => $share[1],
-						'ownerView' => $ownerViews[$owner]
+						'ownerView' => $ownerViews[$owner],
+						'sharingDisabledForUser' => $sharingDisabledForUser
 					],
 					$storageFactory,
 					$view

apps/files_sharing/lib/SharedStorage.php

@@ -79,6 +79,9 @@ class SharedStorage extends \OC\Files\Storage\Wrapper\Jail implements ISharedSto
 
 	private $options;
 
+	/** @var boolean */
+	private $sharingDisabledForUser;
+
 	public function __construct($arguments) {
 		$this->ownerView = $arguments['ownerView'];
 		$this->logger = \OC::$server->getLogger();
@@ -87,6 +90,11 @@ class SharedStorage extends \OC\Files\Storage\Wrapper\Jail implements ISharedSto
 		$this->groupedShares = $arguments['groupedShares'];
 
 		$this->user = $arguments['user'];
+		if (isset($arguments['sharingDisabledForUser'])) {
+			$this->sharingDisabledForUser = $arguments['sharingDisabledForUser'];
+		} else {
+			$this->sharingDisabledForUser = false;
+		}
 
 		parent::__construct([
 			'storage' => null,
@@ -193,7 +201,7 @@ class SharedStorage extends \OC\Files\Storage\Wrapper\Jail implements ISharedSto
 			$permissions |= \OCP\Constants::PERMISSION_DELETE;
 		}
 
-		if (\OCP\Util::isSharingDisabledForUser()) {
+		if ($this->sharingDisabledForUser) {
 			$permissions &= ~\OCP\Constants::PERMISSION_SHARE;
 		}