diff --git a/apps/files_trashbin/lib/Trash/TrashItem.php b/apps/files_trashbin/lib/Trash/TrashItem.php
index 0112b6dbc8..12fd9b7c13 100644
--- a/apps/files_trashbin/lib/Trash/TrashItem.php
+++ b/apps/files_trashbin/lib/Trash/TrashItem.php
@@ -177,4 +177,16 @@ class TrashItem implements ITrashItem {
 	public function getTitle(): string {
 		return $this->getOriginalLocation();
 	}
+
+	public function getMetadataEtag(): ?string {
+		return $this->fileInfo->getMetadataEtag();
+	}
+
+	public function getCreationTime(): int {
+		return $this->fileInfo->getCreationTime();
+	}
+
+	public function getUploadTime(): int {
+		return $this->fileInfo->getUploadTime();
+	}
 }
diff --git a/lib/private/Files/FileInfo.php b/lib/private/Files/FileInfo.php
index 19b95cd035..bdc7a4b634 100644
--- a/lib/private/Files/FileInfo.php
+++ b/lib/private/Files/FileInfo.php
@@ -406,4 +406,16 @@ class FileInfo implements \OCP\Files\FileInfo, \ArrayAccess {
 	public function getExtension(): string {
 		return pathinfo($this->getName(), PATHINFO_EXTENSION);
 	}
+
+	public function getMetadataEtag(): ?string {
+		return $this->data['metadata_etag'];
+	}
+
+	public function getCreationTime(): int {
+		return $this->data['creation_time'];
+	}
+
+	public function getUploadTime(): int {
+		return $this->data['upload_time'];
+	}
 }
diff --git a/lib/private/Files/Node/LazyRoot.php b/lib/private/Files/Node/LazyRoot.php
index 01b4ca5276..3e54d1254a 100644
--- a/lib/private/Files/Node/LazyRoot.php
+++ b/lib/private/Files/Node/LazyRoot.php
@@ -480,4 +480,25 @@ class LazyRoot implements IRootFolder {
 	public function getRecent($limit, $offset = 0) {
 		return $this->__call(__FUNCTION__, func_get_args());
 	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public function getMetadataEtag(): ?string {
+		return $this->__call(__FUNCTION__, func_get_args());
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public function getCreationTime(): int {
+		return $this->__call(__FUNCTION__, func_get_args());
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public function getUploadTime(): int {
+		return $this->__call(__FUNCTION__, func_get_args());
+	}
 }
diff --git a/lib/private/Files/Node/Node.php b/lib/private/Files/Node/Node.php
index c440dd4a8f..dcf5efa62d 100644
--- a/lib/private/Files/Node/Node.php
+++ b/lib/private/Files/Node/Node.php
@@ -444,4 +444,16 @@ class Node implements \OCP\Files\Node {
 		}
 	}
 
+	public function getMetadataEtag(): ?string {
+		return $this->getFileInfo()->getMetadataEtag();
+	}
+
+	public function getCreationTime(): int {
+		return $this->getFileInfo()->getCreationTime();
+	}
+
+	public function getUploadTime(): int {
+		return $this->getFileInfo()->getUploadTime();
+	}
+
 }
diff --git a/lib/public/Files/FileInfo.php b/lib/public/Files/FileInfo.php
index c256f0980f..e1b57d4788 100644
--- a/lib/public/Files/FileInfo.php
+++ b/lib/public/Files/FileInfo.php
@@ -268,4 +268,40 @@ interface FileInfo {
 	 * @since 15.0.0
 	 */
 	public function getExtension(): string;
+
+	/**
+	 * Get the metadata etag for the file
+	 *
+	 * Unlike the regular etag, the metadata etag also gets updated on metadata only changes
+	 *
+	 * @return string | null
+	 * @since 18.0.0
+	 */
+	public function getMetadataEtag(): ?string;
+
+	/**
+	 * Get the creation date as unix timestamp
+	 *
+	 * If the creation time is not known, 0 will be returned
+	 *
+	 * creation time is not set automatically by the server and is generally only available
+	 * for files uploaded by the sync clients
+	 *
+	 * @return int
+	 * @since 18.0.0
+	 */
+	public function getCreationTime(): int;
+
+	/**
+	 * Get the upload date as unix timestamp
+	 *
+	 * If the upload time is not known, 0 will be returned
+	 *
+	 * Upload time will be set automatically by the server for files uploaded over DAV
+	 * files created by Nextcloud apps generally do not have an the upload time set
+	 *
+	 * @return int
+	 * @since 18.0.0
+	 */
+	public function getUploadTime(): int;
 }
diff --git a/tests/lib/Files/ViewTest.php b/tests/lib/Files/ViewTest.php
index 4697dbe89d..5c37c9a0e9 100644
--- a/tests/lib/Files/ViewTest.php
+++ b/tests/lib/Files/ViewTest.php
@@ -25,6 +25,7 @@ use OCP\Share;
 use OCP\Util;
 use Test\TestMoveableMountPoint;
 use Test\HookHelper;
+use Test\Traits\UserTrait;
 
 class TemporaryNoTouch extends Temporary {
 	public function touch($path, $mtime = null) {
@@ -60,10 +61,12 @@ class TemporaryNoLocal extends Temporary {
  * @package Test\Files
  */
 class ViewTest extends \Test\TestCase {
+	use UserTrait;
+
 	/**
 	 * @var \OC\Files\Storage\Storage[] $storages
 	 */
-	private $storages = array();
+	private $storages = [];
 
 	/**
 	 * @var string
@@ -138,9 +141,9 @@ class ViewTest extends \Test\TestCase {
 		$storage2 = $this->getTestStorage();
 		$storage3 = $this->getTestStorage();
 		$root = self::getUniqueID('/');
-		Filesystem::mount($storage1, array(), $root . '/');
-		Filesystem::mount($storage2, array(), $root . '/substorage');
-		Filesystem::mount($storage3, array(), $root . '/folder/anotherstorage');
+		Filesystem::mount($storage1, [], $root . '/');
+		Filesystem::mount($storage2, [], $root . '/substorage');
+		Filesystem::mount($storage3, [], $root . '/folder/anotherstorage');
 		$textSize = strlen("dummy file data\n");
 		$imageSize = filesize(\OC::$SERVERROOT . '/core/img/logo/logo.png');
 		$storageSize = $textSize * 2 + $imageSize;
@@ -204,13 +207,13 @@ class ViewTest extends \Test\TestCase {
 
 		$cachedData = $rootView->getFileInfo('/foo.txt');
 		$this->assertFalse($cachedData['encrypted']);
-		$id = $rootView->putFileInfo('/foo.txt', array('encrypted' => true));
+		$id = $rootView->putFileInfo('/foo.txt', ['encrypted' => true]);
 		$cachedData = $rootView->getFileInfo('/foo.txt');
 		$this->assertTrue($cachedData['encrypted']);
 		$this->assertEquals($cachedData['fileid'], $id);
 
 		$this->assertFalse($rootView->getFileInfo('/non/existing'));
-		$this->assertEquals(array(), $rootView->getDirectoryContent('/non/existing'));
+		$this->assertEquals([], $rootView->getDirectoryContent('/non/existing'));
 	}
 
 	/**
@@ -220,9 +223,9 @@ class ViewTest extends \Test\TestCase {
 		$storage1 = $this->getTestStorage();
 		$storage2 = $this->getTestStorage();
 		$storage3 = $this->getTestStorage();
-		Filesystem::mount($storage1, array(), '/');
-		Filesystem::mount($storage2, array(), '/substorage');
-		Filesystem::mount($storage3, array(), '/folder/anotherstorage');
+		Filesystem::mount($storage1, [], '/');
+		Filesystem::mount($storage2, [], '/substorage');
+		Filesystem::mount($storage3, [], '/folder/anotherstorage');
 
 		$rootView = new View('');
 
@@ -262,8 +265,8 @@ class ViewTest extends \Test\TestCase {
 		$storage1 = $this->getTestStorage(false);
 		$storage2 = $this->getTestStorage();
 		$storage1->mkdir('substorage');
-		Filesystem::mount($storage1, array(), '/');
-		Filesystem::mount($storage2, array(), '/substorage');
+		Filesystem::mount($storage1, [], '/');
+		Filesystem::mount($storage2, [], '/substorage');
 
 		$rootView = new View('');
 		$folderContent = $rootView->getDirectoryContent('/');
@@ -292,8 +295,8 @@ class ViewTest extends \Test\TestCase {
 
 		$storage1 = $this->getTestStorage();
 		$storage2 = $this->getTestStorage();
-		Filesystem::mount($storage1, array(), '/');
-		Filesystem::mount($storage2, array(), '/mount');
+		Filesystem::mount($storage1, [], '/');
+		Filesystem::mount($storage2, [], '/mount');
 
 		$view = new View('/');
 
@@ -313,7 +316,7 @@ class ViewTest extends \Test\TestCase {
 	public function testCacheIncompleteFolder() {
 		$storage1 = $this->getTestStorage(false);
 		Filesystem::clearMounts();
-		Filesystem::mount($storage1, array(), '/incomplete');
+		Filesystem::mount($storage1, [], '/incomplete');
 		$rootView = new View('/incomplete');
 
 		$entries = $rootView->getDirectoryContent('/');
@@ -327,8 +330,8 @@ class ViewTest extends \Test\TestCase {
 	public function testAutoScan() {
 		$storage1 = $this->getTestStorage(false);
 		$storage2 = $this->getTestStorage(false);
-		Filesystem::mount($storage1, array(), '/');
-		Filesystem::mount($storage2, array(), '/substorage');
+		Filesystem::mount($storage1, [], '/');
+		Filesystem::mount($storage2, [], '/substorage');
 		$textSize = strlen("dummy file data\n");
 
 		$rootView = new View('');
@@ -349,15 +352,15 @@ class ViewTest extends \Test\TestCase {
 		$storage1 = $this->getTestStorage();
 		$storage2 = $this->getTestStorage();
 		$storage3 = $this->getTestStorage();
-		Filesystem::mount($storage1, array(), '/');
-		Filesystem::mount($storage2, array(), '/substorage');
-		Filesystem::mount($storage3, array(), '/folder/anotherstorage');
+		Filesystem::mount($storage1, [], '/');
+		Filesystem::mount($storage2, [], '/substorage');
+		Filesystem::mount($storage3, [], '/folder/anotherstorage');
 
 		$rootView = new View('');
 
 		$results = $rootView->search('foo');
 		$this->assertCount(6, $results);
-		$paths = array();
+		$paths = [];
 		foreach ($results as $result) {
 			$this->assertEquals($result['path'], Filesystem::normalizePath($result['path']));
 			$paths[] = $result['path'];
@@ -372,7 +375,7 @@ class ViewTest extends \Test\TestCase {
 		$folderView = new View('/folder');
 		$results = $folderView->search('bar');
 		$this->assertCount(2, $results);
-		$paths = array();
+		$paths = [];
 		foreach ($results as $result) {
 			$paths[] = $result['path'];
 		}
@@ -381,7 +384,7 @@ class ViewTest extends \Test\TestCase {
 
 		$results = $folderView->search('foo');
 		$this->assertCount(2, $results);
-		$paths = array();
+		$paths = [];
 		foreach ($results as $result) {
 			$paths[] = $result['path'];
 		}
@@ -397,7 +400,7 @@ class ViewTest extends \Test\TestCase {
 	 */
 	public function testWatcher() {
 		$storage1 = $this->getTestStorage();
-		Filesystem::mount($storage1, array(), '/');
+		Filesystem::mount($storage1, [], '/');
 		$storage1->getWatcher()->setPolicy(Watcher::CHECK_ALWAYS);
 
 		$rootView = new View('');
@@ -405,7 +408,7 @@ class ViewTest extends \Test\TestCase {
 		$cachedData = $rootView->getFileInfo('foo.txt');
 		$this->assertEquals(16, $cachedData['size']);
 
-		$rootView->putFileInfo('foo.txt', array('storage_mtime' => 10));
+		$rootView->putFileInfo('foo.txt', ['storage_mtime' => 10]);
 		$storage1->file_put_contents('foo.txt', 'foo');
 		clearstatcache();
 
@@ -441,8 +444,8 @@ class ViewTest extends \Test\TestCase {
 	}
 
 	public function copyBetweenStorages($storage1, $storage2) {
-		Filesystem::mount($storage1, array(), '/');
-		Filesystem::mount($storage2, array(), '/substorage');
+		Filesystem::mount($storage1, [], '/');
+		Filesystem::mount($storage2, [], '/substorage');
 
 		$rootView = new View('');
 		$rootView->mkdir('substorage/emptyfolder');
@@ -487,8 +490,8 @@ class ViewTest extends \Test\TestCase {
 	}
 
 	public function moveBetweenStorages($storage1, $storage2) {
-		Filesystem::mount($storage1, array(), '/');
-		Filesystem::mount($storage2, array(), '/substorage');
+		Filesystem::mount($storage1, [], '/');
+		Filesystem::mount($storage2, [], '/substorage');
 
 		$rootView = new View('');
 		$rootView->rename('foo.txt', 'substorage/folder/foo.txt');
@@ -506,8 +509,8 @@ class ViewTest extends \Test\TestCase {
 	public function testUnlink() {
 		$storage1 = $this->getTestStorage();
 		$storage2 = $this->getTestStorage();
-		Filesystem::mount($storage1, array(), '/');
-		Filesystem::mount($storage2, array(), '/substorage');
+		Filesystem::mount($storage1, [], '/');
+		Filesystem::mount($storage2, [], '/substorage');
 
 		$rootView = new View('');
 		$rootView->file_put_contents('/foo.txt', 'asd');
@@ -552,8 +555,8 @@ class ViewTest extends \Test\TestCase {
 	public function testUnlinkRootMustFail() {
 		$storage1 = $this->getTestStorage();
 		$storage2 = $this->getTestStorage();
-		Filesystem::mount($storage1, array(), '/');
-		Filesystem::mount($storage2, array(), '/substorage');
+		Filesystem::mount($storage1, [], '/');
+		Filesystem::mount($storage2, [], '/substorage');
 
 		$rootView = new View('');
 		$rootView->file_put_contents('/foo.txt', 'asd');
@@ -571,7 +574,7 @@ class ViewTest extends \Test\TestCase {
 	public function testTouch() {
 		$storage = $this->getTestStorage(true, TemporaryNoTouch::class);
 
-		Filesystem::mount($storage, array(), '/');
+		Filesystem::mount($storage, [], '/');
 
 		$rootView = new View('');
 		$oldCachedData = $rootView->getFileInfo('foo.txt');
@@ -582,7 +585,7 @@ class ViewTest extends \Test\TestCase {
 		$this->assertEquals(500, $cachedData['mtime']);
 		$this->assertEquals($oldCachedData['storage_mtime'], $cachedData['storage_mtime']);
 
-		$rootView->putFileInfo('foo.txt', array('storage_mtime' => 1000)); //make sure the watcher detects the change
+		$rootView->putFileInfo('foo.txt', ['storage_mtime' => 1000]); //make sure the watcher detects the change
 		$rootView->file_put_contents('foo.txt', 'asd');
 		$cachedData = $rootView->getFileInfo('foo.txt');
 		$this->assertGreaterThanOrEqual($oldCachedData['mtime'], $cachedData['mtime']);
@@ -595,7 +598,7 @@ class ViewTest extends \Test\TestCase {
 	public function testTouchFloat() {
 		$storage = $this->getTestStorage(true, TemporaryNoTouch::class);
 
-		Filesystem::mount($storage, array(), '/');
+		Filesystem::mount($storage, [], '/');
 
 		$rootView = new View('');
 		$oldCachedData = $rootView->getFileInfo('foo.txt');
@@ -613,8 +616,8 @@ class ViewTest extends \Test\TestCase {
 		$storage1 = $this->getTestStorage();
 		$storage2 = $this->getTestStorage();
 		$defaultRoot = Filesystem::getRoot();
-		Filesystem::mount($storage1, array(), '/');
-		Filesystem::mount($storage2, array(), $defaultRoot . '/substorage');
+		Filesystem::mount($storage1, [], '/');
+		Filesystem::mount($storage2, [], $defaultRoot . '/substorage');
 		\OC_Hook::connect('OC_Filesystem', 'post_write', $this, 'dummyHook');
 
 		$rootView = new View('');
@@ -636,7 +639,7 @@ class ViewTest extends \Test\TestCase {
 
 	public function testSearchNotOutsideView() {
 		$storage1 = $this->getTestStorage();
-		Filesystem::mount($storage1, array(), '/');
+		Filesystem::mount($storage1, [], '/');
 		$storage1->rename('folder', 'foo');
 		$scanner = $storage1->getScanner();
 		$scanner->scan('');
@@ -656,7 +659,7 @@ class ViewTest extends \Test\TestCase {
 		/**
 		 * @var \OC\Files\Storage\Storage $storage
 		 */
-		$storage = new $class(array());
+		$storage = new $class([]);
 		$textData = "dummy file data\n";
 		$imgData = file_get_contents(\OC::$SERVERROOT . '/core/img/logo/logo.png');
 		$storage->mkdir('folder');
@@ -679,8 +682,8 @@ class ViewTest extends \Test\TestCase {
 		$storage1 = $this->getTestStorage();
 		$storage2 = $this->getTestStorage();
 		$defaultRoot = Filesystem::getRoot();
-		Filesystem::mount($storage1, array(), '/');
-		Filesystem::mount($storage2, array(), $defaultRoot . '_substorage');
+		Filesystem::mount($storage1, [], '/');
+		Filesystem::mount($storage2, [], $defaultRoot . '_substorage');
 		\OC_Hook::connect('OC_Filesystem', 'post_write', $this, 'dummyHook');
 
 		$subView = new View($defaultRoot . '_substorage');
@@ -710,8 +713,8 @@ class ViewTest extends \Test\TestCase {
 		$storage1 = $this->getTestStorage();
 		$storage2 = $this->getTestStorage();
 		$defaultRoot = Filesystem::getRoot();
-		Filesystem::mount($storage1, array(), '/');
-		Filesystem::mount($storage2, array(), $defaultRoot);
+		Filesystem::mount($storage1, [], '/');
+		Filesystem::mount($storage2, [], $defaultRoot);
 		\OC_Hook::connect('OC_Filesystem', 'post_create', $this, 'dummyHookCreate');
 		\OC_Hook::connect('OC_Filesystem', 'post_update', $this, 'dummyHookUpdate');
 		\OC_Hook::connect('OC_Filesystem', 'post_write', $this, 'dummyHookWrite');
@@ -741,7 +744,7 @@ class ViewTest extends \Test\TestCase {
 	 */
 	public function testResolvePath($expected, $pathToTest) {
 		$storage1 = $this->getTestStorage();
-		Filesystem::mount($storage1, array(), '/');
+		Filesystem::mount($storage1, [], '/');
 
 		$view = new View('');
 
@@ -756,25 +759,25 @@ class ViewTest extends \Test\TestCase {
 	}
 
 	public function resolvePathTestProvider() {
-		return array(
-			array('foo.txt', 'foo.txt'),
-			array('foo.txt', '/foo.txt'),
-			array('folder', 'folder'),
-			array('folder', '/folder'),
-			array('folder', 'folder/'),
-			array('folder', '/folder/'),
-			array('folder/bar.txt', 'folder/bar.txt'),
-			array('folder/bar.txt', '/folder/bar.txt'),
-			array('', ''),
-			array('', '/'),
-		);
+		return [
+			['foo.txt', 'foo.txt'],
+			['foo.txt', '/foo.txt'],
+			['folder', 'folder'],
+			['folder', '/folder'],
+			['folder', 'folder/'],
+			['folder', '/folder/'],
+			['folder/bar.txt', 'folder/bar.txt'],
+			['folder/bar.txt', '/folder/bar.txt'],
+			['', ''],
+			['', '/'],
+		];
 	}
 
 	public function testUTF8Names() {
-		$names = array('虚', '和知しゃ和で', 'regular ascii', 'sɨˈrɪlɪk', 'ѨѬ', 'أنا أحب القراءة كثيرا');
+		$names = ['虚', '和知しゃ和で', 'regular ascii', 'sɨˈrɪlɪk', 'ѨѬ', 'أنا أحب القراءة كثيرا'];
 
-		$storage = new Temporary(array());
-		Filesystem::mount($storage, array(), '/');
+		$storage = new Temporary([]);
+		Filesystem::mount($storage, [], '/');
 
 		$rootView = new View('');
 		foreach ($names as $name) {
@@ -802,8 +805,8 @@ class ViewTest extends \Test\TestCase {
 
 	public function xtestLongPath() {
 
-		$storage = new Temporary(array());
-		Filesystem::mount($storage, array(), '/');
+		$storage = new Temporary([]);
+		Filesystem::mount($storage, [], '/');
 
 		$rootView = new View('');
 
@@ -851,9 +854,9 @@ class ViewTest extends \Test\TestCase {
 	}
 
 	public function testTouchNotSupported() {
-		$storage = new TemporaryNoTouch(array());
+		$storage = new TemporaryNoTouch([]);
 		$scanner = $storage->getScanner();
-		Filesystem::mount($storage, array(), '/test/');
+		Filesystem::mount($storage, [], '/test/');
 		$past = time() - 100;
 		$storage->file_put_contents('test', 'foobar');
 		$scanner->scan('');
@@ -868,13 +871,13 @@ class ViewTest extends \Test\TestCase {
 	}
 
 	public function testWatcherEtagCrossStorage() {
-		$storage1 = new Temporary(array());
-		$storage2 = new Temporary(array());
+		$storage1 = new Temporary([]);
+		$storage2 = new Temporary([]);
 		$scanner1 = $storage1->getScanner();
 		$scanner2 = $storage2->getScanner();
 		$storage1->mkdir('sub');
-		Filesystem::mount($storage1, array(), '/test/');
-		Filesystem::mount($storage2, array(), '/test/sub/storage');
+		Filesystem::mount($storage1, [], '/test/');
+		Filesystem::mount($storage2, [], '/test/sub/storage');
 
 		$past = time() - 100;
 		$storage2->file_put_contents('test.txt', 'foobar');
@@ -887,9 +890,9 @@ class ViewTest extends \Test\TestCase {
 		$oldFileInfo = $view->getFileInfo('/test/sub/storage/test.txt');
 		$oldFolderInfo = $view->getFileInfo('/test');
 
-		$storage2->getCache()->update($oldFileInfo->getId(), array(
-			'storage_mtime' => $past
-		));
+		$storage2->getCache()->update($oldFileInfo->getId(), [
+			'storage_mtime' => $past,
+		]);
 
 		$oldEtag = $oldFolderInfo->getEtag();
 
@@ -908,9 +911,9 @@ class ViewTest extends \Test\TestCase {
 	}
 
 	public function testPartFileInfo() {
-		$storage = new Temporary(array());
+		$storage = new Temporary([]);
 		$scanner = $storage->getScanner();
-		Filesystem::mount($storage, array(), '/test/');
+		Filesystem::mount($storage, [], '/test/');
 		$storage->file_put_contents('test.part', 'foobar');
 		$scanner->scan('');
 		$view = new View('/test');
@@ -922,15 +925,15 @@ class ViewTest extends \Test\TestCase {
 	}
 
 	public function absolutePathProvider() {
-		return array(
-			array('/files/', ''),
-			array('/files/0', '0'),
-			array('/files/false', 'false'),
-			array('/files/true', 'true'),
-			array('/files/', '/'),
-			array('/files/test', 'test'),
-			array('/files/test', '/test'),
-		);
+		return [
+			['/files/', ''],
+			['/files/0', '0'],
+			['/files/false', 'false'],
+			['/files/true', 'true'],
+			['/files/', '/'],
+			['/files/test', 'test'],
+			['/files/test', '/test'],
+		];
 	}
 
 	/**
@@ -959,81 +962,81 @@ class ViewTest extends \Test\TestCase {
 	}
 
 	public function relativePathProvider($missingRootExpectedPath) {
-		return array(
+		return [
 			// No root - returns the path
-			array('', '/files', '/files'),
-			array('', '/files/', '/files/'),
+			['', '/files', '/files'],
+			['', '/files/', '/files/'],
 
 			// Root equals path - /
-			array('/files/', '/files/', '/'),
-			array('/files/', '/files', '/'),
-			array('/files', '/files/', '/'),
-			array('/files', '/files', '/'),
+			['/files/', '/files/', '/'],
+			['/files/', '/files', '/'],
+			['/files', '/files/', '/'],
+			['/files', '/files', '/'],
 
 			// False negatives: chroot fixes those by adding the leading slash.
 			// But setting them up with this root (instead of chroot($root))
 			// will fail them, although they should be the same.
 			// TODO init should be fixed, so it also adds the leading slash
-			array('files/', '/files/', $missingRootExpectedPath),
-			array('files', '/files/', $missingRootExpectedPath),
-			array('files/', '/files', $missingRootExpectedPath),
-			array('files', '/files', $missingRootExpectedPath),
+			['files/', '/files/', $missingRootExpectedPath],
+			['files', '/files/', $missingRootExpectedPath],
+			['files/', '/files', $missingRootExpectedPath],
+			['files', '/files', $missingRootExpectedPath],
 
 			// False negatives: Paths provided to the method should have a leading slash
 			// TODO input should be checked to have a leading slash
-			array('/files/', 'files/', null),
-			array('/files', 'files/', null),
-			array('/files/', 'files', null),
-			array('/files', 'files', null),
+			['/files/', 'files/', null],
+			['/files', 'files/', null],
+			['/files/', 'files', null],
+			['/files', 'files', null],
 
 			// with trailing slashes
-			array('/files/', '/files/0', '0'),
-			array('/files/', '/files/false', 'false'),
-			array('/files/', '/files/true', 'true'),
-			array('/files/', '/files/test', 'test'),
-			array('/files/', '/files/test/foo', 'test/foo'),
+			['/files/', '/files/0', '0'],
+			['/files/', '/files/false', 'false'],
+			['/files/', '/files/true', 'true'],
+			['/files/', '/files/test', 'test'],
+			['/files/', '/files/test/foo', 'test/foo'],
 
 			// without trailing slashes
 			// TODO false expectation: Should match "with trailing slashes"
-			array('/files', '/files/0', '/0'),
-			array('/files', '/files/false', '/false'),
-			array('/files', '/files/true', '/true'),
-			array('/files', '/files/test', '/test'),
-			array('/files', '/files/test/foo', '/test/foo'),
+			['/files', '/files/0', '/0'],
+			['/files', '/files/false', '/false'],
+			['/files', '/files/true', '/true'],
+			['/files', '/files/test', '/test'],
+			['/files', '/files/test/foo', '/test/foo'],
 
 			// leading slashes
-			array('/files/', '/files_trashbin/', null),
-			array('/files', '/files_trashbin/', null),
-			array('/files/', '/files_trashbin', null),
-			array('/files', '/files_trashbin', null),
+			['/files/', '/files_trashbin/', null],
+			['/files', '/files_trashbin/', null],
+			['/files/', '/files_trashbin', null],
+			['/files', '/files_trashbin', null],
 
 			// no leading slashes
-			array('files/', 'files_trashbin/', null),
-			array('files', 'files_trashbin/', null),
-			array('files/', 'files_trashbin', null),
-			array('files', 'files_trashbin', null),
+			['files/', 'files_trashbin/', null],
+			['files', 'files_trashbin/', null],
+			['files/', 'files_trashbin', null],
+			['files', 'files_trashbin', null],
 
 			// mixed leading slashes
-			array('files/', '/files_trashbin/', null),
-			array('/files/', 'files_trashbin/', null),
-			array('files', '/files_trashbin/', null),
-			array('/files', 'files_trashbin/', null),
-			array('files/', '/files_trashbin', null),
-			array('/files/', 'files_trashbin', null),
-			array('files', '/files_trashbin', null),
-			array('/files', 'files_trashbin', null),
+			['files/', '/files_trashbin/', null],
+			['/files/', 'files_trashbin/', null],
+			['files', '/files_trashbin/', null],
+			['/files', 'files_trashbin/', null],
+			['files/', '/files_trashbin', null],
+			['/files/', 'files_trashbin', null],
+			['files', '/files_trashbin', null],
+			['/files', 'files_trashbin', null],
 
-			array('files', 'files_trashbin/test', null),
-			array('/files', '/files_trashbin/test', null),
-			array('/files', 'files_trashbin/test', null),
-		);
+			['files', 'files_trashbin/test', null],
+			['/files', '/files_trashbin/test', null],
+			['/files', 'files_trashbin/test', null],
+		];
 	}
 
 	public function testFileView() {
-		$storage = new Temporary(array());
+		$storage = new Temporary([]);
 		$scanner = $storage->getScanner();
 		$storage->file_put_contents('foo.txt', 'bar');
-		Filesystem::mount($storage, array(), '/test/');
+		Filesystem::mount($storage, [], '/test/');
 		$scanner->scan('');
 		$view = new View('/test/foo.txt');
 
@@ -1059,9 +1062,9 @@ class ViewTest extends \Test\TestCase {
 			$longPath .= '/' . $folderName;
 		}
 
-		$storage = new Temporary(array());
+		$storage = new Temporary([]);
 		$this->tempStorage = $storage; // for later hard cleanup
-		Filesystem::mount($storage, array(), '/');
+		Filesystem::mount($storage, [], '/');
 
 		$rootView = new View('');
 
@@ -1074,64 +1077,64 @@ class ViewTest extends \Test\TestCase {
 			$longPath = 'md5';
 		}
 
-		call_user_func(array($rootView, $operation), $longPath, $param0);
+		call_user_func([$rootView, $operation], $longPath, $param0);
 	}
 
 	public function tooLongPathDataProvider() {
-		return array(
-			array('getAbsolutePath'),
-			array('getRelativePath'),
-			array('getMountPoint'),
-			array('resolvePath'),
-			array('getLocalFile'),
-			array('getLocalFolder'),
-			array('mkdir'),
-			array('rmdir'),
-			array('opendir'),
-			array('is_dir'),
-			array('is_file'),
-			array('stat'),
-			array('filetype'),
-			array('filesize'),
-			array('readfile'),
-			array('isCreatable'),
-			array('isReadable'),
-			array('isUpdatable'),
-			array('isDeletable'),
-			array('isSharable'),
-			array('file_exists'),
-			array('filemtime'),
-			array('touch'),
-			array('file_get_contents'),
-			array('unlink'),
-			array('deleteAll'),
-			array('toTmpFile'),
-			array('getMimeType'),
-			array('free_space'),
-			array('getFileInfo'),
-			array('getDirectoryContent'),
-			array('getOwner'),
-			array('getETag'),
-			array('file_put_contents', 'ipsum'),
-			array('rename', '@0'),
-			array('copy', '@0'),
-			array('fopen', 'r'),
-			array('fromTmpFile', '@0'),
-			array('hash'),
-			array('hasUpdated', 0),
-			array('putFileInfo', array()),
-		);
+		return [
+			['getAbsolutePath'],
+			['getRelativePath'],
+			['getMountPoint'],
+			['resolvePath'],
+			['getLocalFile'],
+			['getLocalFolder'],
+			['mkdir'],
+			['rmdir'],
+			['opendir'],
+			['is_dir'],
+			['is_file'],
+			['stat'],
+			['filetype'],
+			['filesize'],
+			['readfile'],
+			['isCreatable'],
+			['isReadable'],
+			['isUpdatable'],
+			['isDeletable'],
+			['isSharable'],
+			['file_exists'],
+			['filemtime'],
+			['touch'],
+			['file_get_contents'],
+			['unlink'],
+			['deleteAll'],
+			['toTmpFile'],
+			['getMimeType'],
+			['free_space'],
+			['getFileInfo'],
+			['getDirectoryContent'],
+			['getOwner'],
+			['getETag'],
+			['file_put_contents', 'ipsum'],
+			['rename', '@0'],
+			['copy', '@0'],
+			['fopen', 'r'],
+			['fromTmpFile', '@0'],
+			['hash'],
+			['hasUpdated', 0],
+			['putFileInfo', []],
+		];
 	}
 
 	public function testRenameCrossStoragePreserveMtime() {
-		$storage1 = new Temporary(array());
-		$storage2 = new Temporary(array());
+		$storage1 = new Temporary([]);
+		$storage2 = new Temporary([]);
 		$storage1->mkdir('sub');
 		$storage1->mkdir('foo');
 		$storage1->file_put_contents('foo.txt', 'asd');
 		$storage1->file_put_contents('foo/bar.txt', 'asd');
-		Filesystem::mount($storage1, array(), '/test/');
-		Filesystem::mount($storage2, array(), '/test/sub/storage');
+		Filesystem::mount($storage1, [], '/test/');
+		Filesystem::mount($storage2, [], '/test/sub/storage');
 
 		$view = new View('');
 		$time = time() - 200;
@@ -1157,7 +1160,7 @@ class ViewTest extends \Test\TestCase {
 	}
 
 	private function doTestCopyRenameFail($operation) {
-		$storage1 = new Temporary(array());
+		$storage1 = new Temporary([]);
 		/** @var \PHPUnit_Framework_MockObject_MockObject|Temporary $storage2 */
 		$storage2 = $this->getMockBuilder(TemporaryNoCross::class)
 			->setConstructorArgs([[]])
@@ -1180,8 +1183,8 @@ class ViewTest extends \Test\TestCase {
 		$storage2->file_put_contents('existing.txt', '0123');
 		$storage1->getScanner()->scan('');
 		$storage2->getScanner()->scan('');
-		Filesystem::mount($storage1, array(), '/test/');
-		Filesystem::mount($storage2, array(), '/test/sub/storage');
+		Filesystem::mount($storage1, [], '/test/');
+		Filesystem::mount($storage2, [], '/test/sub/storage');
 
 		// move file
 		$view = new View('');
@@ -1212,8 +1215,8 @@ class ViewTest extends \Test\TestCase {
 	public function testDeleteFailKeepCache() {
 		/** @var Temporary|\PHPUnit_Framework_MockObject_MockObject $storage */
 		$storage = $this->getMockBuilder(Temporary::class)
-			->setConstructorArgs(array(array()))
-			->setMethods(array('unlink'))
+			->setConstructorArgs([[]])
+			->setMethods(['unlink'])
 			->getMock();
 		$storage->expects($this->once())
 			->method('unlink')
@@ -1222,7 +1225,7 @@ class ViewTest extends \Test\TestCase {
 		$cache = $storage->getCache();
 		$storage->file_put_contents('foo.txt', 'asd');
 		$scanner->scan('');
-		Filesystem::mount($storage, array(), '/test/');
+		Filesystem::mount($storage, [], '/test/');
 
 		$view = new View('/test');
 
@@ -1248,14 +1251,14 @@ class ViewTest extends \Test\TestCase {
 	}
 
 	public function testRenameOverWrite() {
-		$storage = new Temporary(array());
+		$storage = new Temporary([]);
 		$scanner = $storage->getScanner();
 		$storage->mkdir('sub');
 		$storage->mkdir('foo');
 		$storage->file_put_contents('foo.txt', 'asd');
 		$storage->file_put_contents('foo/bar.txt', 'asd');
 		$scanner->scan('');
-		Filesystem::mount($storage, array(), '/test/');
+		Filesystem::mount($storage, [], '/test/');
 		$view = new View('');
 		$this->assertTrue($view->rename('/test/foo.txt', '/test/foo/bar.txt'));
 	}
@@ -1309,7 +1312,7 @@ class ViewTest extends \Test\TestCase {
 		$pathPrefix = str_replace('{folder}', 'files', $pathPrefix);
 
 		$view = new View($rootPath);
-		$storage = new Temporary(array());
+		$storage = new Temporary([]);
 		Filesystem::mount($storage, [], '/');
 		$this->assertTrue($view->lockFile($pathPrefix . '/foo/bar', ILockingProvider::LOCK_EXCLUSIVE));
 		$view->lockFile($pathPrefix . '/foo/bar/asd', ILockingProvider::LOCK_SHARED);
@@ -1328,7 +1331,7 @@ class ViewTest extends \Test\TestCase {
 		$pathPrefix = str_replace('{folder}', 'files_encryption', $pathPrefix);
 
 		$view = new View($rootPath);
-		$storage = new Temporary(array());
+		$storage = new Temporary([]);
 		Filesystem::mount($storage, [], '/');
 		$this->assertFalse($view->lockFile($pathPrefix . '/foo/bar', ILockingProvider::LOCK_EXCLUSIVE));
 		$this->assertFalse($view->lockFile($pathPrefix . '/foo/bar/asd', ILockingProvider::LOCK_SHARED));
@@ -1349,7 +1352,7 @@ class ViewTest extends \Test\TestCase {
 		$pathPrefix = str_replace('{folder}', 'files', $pathPrefix);
 
 		$view = new View($rootPath);
-		$storage = new Temporary(array());
+		$storage = new Temporary([]);
 		Filesystem::mount($storage, [], '/');
 		$this->assertTrue($view->lockFile($pathPrefix . '/foo/bar', ILockingProvider::LOCK_SHARED));
 		$view->lockFile($pathPrefix . '/foo/bar', ILockingProvider::LOCK_EXCLUSIVE);
@@ -1368,7 +1371,7 @@ class ViewTest extends \Test\TestCase {
 		$pathPrefix = str_replace('{folder}', 'files_encryption', $pathPrefix);
 
 		$view = new View($rootPath);
-		$storage = new Temporary(array());
+		$storage = new Temporary([]);
 		Filesystem::mount($storage, [], '/');
 		$this->assertFalse($view->lockFile($pathPrefix . '/foo/bar', ILockingProvider::LOCK_SHARED));
 		$this->assertFalse($view->lockFile($pathPrefix . '/foo/bar', ILockingProvider::LOCK_EXCLUSIVE));
@@ -1516,7 +1519,7 @@ class ViewTest extends \Test\TestCase {
 
 	public function testChangeLock() {
 		$view = new View('/testuser/files/');
-		$storage = new Temporary(array());
+		$storage = new Temporary([]);
 		Filesystem::mount($storage, [], '/');
 
 		$view->lockFile('/test/sub', ILockingProvider::LOCK_SHARED);
@@ -1544,7 +1547,7 @@ class ViewTest extends \Test\TestCase {
 			['/foo', '/files/foo', true],
 			['/foo', 'filesfoo', false],
 			['', '/foo/files', true],
-			['', '/foo/files/bar.txt', true]
+			['', '/foo/files/bar.txt', true],
 		];
 	}
 
@@ -1828,7 +1831,7 @@ class ViewTest extends \Test\TestCase {
 			->setMethods([$operation])
 			->getMock();
 
-		Filesystem::mount($storage, array(), $this->user . '/');
+		Filesystem::mount($storage, [], $this->user . '/');
 
 		// work directly on disk because mkdir might be mocked
 		$realPath = $storage->getSourcePath('');
@@ -1852,7 +1855,7 @@ class ViewTest extends \Test\TestCase {
 		$this->connectMockHooks($hookType, $view, $lockedPath, $lockTypePre, $lockTypePost);
 
 		// do operation
-		call_user_func_array(array($view, $operation), $operationArgs);
+		call_user_func_array([$view, $operation], $operationArgs);
 
 		if ($hookType !== null) {
 			$this->assertEquals($expectedLockBefore, $lockTypePre, 'File locked properly during pre-hook');
@@ -1878,7 +1881,7 @@ class ViewTest extends \Test\TestCase {
 			->setMethods(['fopen'])
 			->getMock();
 
-		Filesystem::mount($storage, array(), $this->user . '/');
+		Filesystem::mount($storage, [], $this->user . '/');
 		$storage->mkdir('files');
 
 		$storage->expects($this->once())
@@ -1917,7 +1920,7 @@ class ViewTest extends \Test\TestCase {
 			->setMethods(['fopen'])
 			->getMock();
 
-		Filesystem::mount($storage, array(), $this->user . '/');
+		Filesystem::mount($storage, [], $this->user . '/');
 		$storage->mkdir('files');
 
 		$storage->expects($this->once())
@@ -1972,7 +1975,7 @@ class ViewTest extends \Test\TestCase {
 			->setMethods([$operation])
 			->getMock();
 
-		Filesystem::mount($storage, array(), $this->user . '/');
+		Filesystem::mount($storage, [], $this->user . '/');
 
 		// work directly on disk because mkdir might be mocked
 		$realPath = $storage->getSourcePath('');
@@ -1991,7 +1994,7 @@ class ViewTest extends \Test\TestCase {
 
 		$thrown = false;
 		try {
-			call_user_func_array(array($view, $operation), $operationArgs);
+			call_user_func_array([$view, $operation], $operationArgs);
 		} catch (\Exception $e) {
 			$thrown = true;
 			$this->assertEquals('Simulated exception', $e->getMessage());
@@ -2005,7 +2008,7 @@ class ViewTest extends \Test\TestCase {
 
 		$storage = new Temporary([]);
 
-		Filesystem::mount($storage, array(), $this->user . '/');
+		Filesystem::mount($storage, [], $this->user . '/');
 
 		$storage->mkdir('files');
 		$storage->mkdir('files/dir');
@@ -2054,7 +2057,7 @@ class ViewTest extends \Test\TestCase {
 			->setMethods([$operation])
 			->getMock();
 
-		Filesystem::mount($storage, array(), $this->user . '/');
+		Filesystem::mount($storage, [], $this->user . '/');
 		$storage->mkdir('files');
 
 		Util::connectHook(
@@ -2064,7 +2067,7 @@ class ViewTest extends \Test\TestCase {
 			'cancellingCallback'
 		);
 
-		call_user_func_array(array($view, $operation), $operationArgs);
+		call_user_func_array([$view, $operation], $operationArgs);
 
 		$this->assertNull($this->getFileLockType($view, $path), 'File got unlocked after exception');
 	}
@@ -2100,7 +2103,7 @@ class ViewTest extends \Test\TestCase {
 		$sourcePath = 'original.txt';
 		$targetPath = 'target.txt';
 
-		Filesystem::mount($storage, array(), $this->user . '/');
+		Filesystem::mount($storage, [], $this->user . '/');
 		$storage->mkdir('files');
 		$view->file_put_contents($sourcePath, 'meh');
 
@@ -2152,7 +2155,7 @@ class ViewTest extends \Test\TestCase {
 		$sourcePath = 'original.txt';
 		$targetPath = 'target.txt';
 
-		Filesystem::mount($storage, array(), $this->user . '/');
+		Filesystem::mount($storage, [], $this->user . '/');
 		$storage->mkdir('files');
 		$view->file_put_contents($sourcePath, 'meh');
 
@@ -2279,8 +2282,8 @@ class ViewTest extends \Test\TestCase {
 		$sourcePath = 'original.txt';
 		$targetPath = 'substorage/target.txt';
 
-		Filesystem::mount($storage, array(), $this->user . '/');
-		Filesystem::mount($storage2, array(), $this->user . '/files/substorage');
+		Filesystem::mount($storage, [], $this->user . '/');
+		Filesystem::mount($storage2, [], $this->user . '/files/substorage');
 		$storage->mkdir('files');
 		$view->file_put_contents($sourcePath, 'meh');
 
@@ -2513,7 +2516,7 @@ class ViewTest extends \Test\TestCase {
 	public function testGetDirectoryContentMimeFilter($filter, $expected) {
 		$storage1 = new Temporary();
 		$root = self::getUniqueID('/');
-		Filesystem::mount($storage1, array(), $root . '/');
+		Filesystem::mount($storage1, [], $root . '/');
 		$view = new View($root);
 
 		$view->file_put_contents('test1.txt', 'asd');
@@ -2532,10 +2535,10 @@ class ViewTest extends \Test\TestCase {
 	}
 
 	public function testFilePutContentsClearsChecksum() {
-		$storage = new Temporary(array());
+		$storage = new Temporary([]);
 		$scanner = $storage->getScanner();
 		$storage->file_put_contents('foo.txt', 'bar');
-		Filesystem::mount($storage, array(), '/test/');
+		Filesystem::mount($storage, [], '/test/');
 		$scanner->scan('');
 
 		$view = new View('/test/foo.txt');
@@ -2552,11 +2555,11 @@ class ViewTest extends \Test\TestCase {
 	}
 
 	public function testDeleteGhostFile() {
-		$storage = new Temporary(array());
+		$storage = new Temporary([]);
 		$scanner = $storage->getScanner();
 		$cache = $storage->getCache();
 		$storage->file_put_contents('foo.txt', 'bar');
-		Filesystem::mount($storage, array(), '/test/');
+		Filesystem::mount($storage, [], '/test/');
 		$scanner->scan('');
 
 		$storage->unlink('foo.txt');
@@ -2575,12 +2578,12 @@ class ViewTest extends \Test\TestCase {
 	}
 
 	public function testDeleteGhostFolder() {
-		$storage = new Temporary(array());
+		$storage = new Temporary([]);
 		$scanner = $storage->getScanner();
 		$cache = $storage->getCache();
 		$storage->mkdir('foo');
 		$storage->file_put_contents('foo/foo.txt', 'bar');
-		Filesystem::mount($storage, array(), '/test/');
+		Filesystem::mount($storage, [], '/test/');
 		$scanner->scan('');
 
 		$storage->rmdir('foo');
@@ -2669,4 +2672,24 @@ class ViewTest extends \Test\TestCase {
 			->willReturn(true);
 		$this->assertFalse(self::invokePrivate($view, 'createParentDirectories', ['/file.txt/folder/structure']));
 	}
+
+	public function testCacheExtension() {
+		$storage = new Temporary([]);
+		$scanner = $storage->getScanner();
+		$storage->file_put_contents('foo.txt', 'bar');
+		$scanner->scan('');
+
+		Filesystem::mount($storage, [], '/test/');
+		$view = new View('/test');
+
+		$info = $view->getFileInfo('/foo.txt');
+		$this->assertEquals(0, $info->getUploadTime());
+		$this->assertEquals(0, $info->getCreationTime());
+
+		$view->putFileInfo('/foo.txt', ['upload_time' => 25]);
+
+		$info = $view->getFileInfo('/foo.txt');
+		$this->assertEquals(25, $info->getUploadTime());
+		$this->assertEquals(0, $info->getCreationTime());
+	}
 }