From 27339601f61b6600859d7d2058f146df5380f39a Mon Sep 17 00:00:00 2001
From: Carl Schwan <carlschwan@kde.org>
Date: Wed, 14 Jan 2026 16:06:09 +0100
Subject: [PATCH] perf(View): Optimize getDirectoryContent hot-loop

Signed-off-by: Carl Schwan <carlschwan@kde.org>
---
 lib/private/Files/Cache/CacheEntry.php |  2 +-
 lib/private/Files/Mount/Manager.php    | 12 +++---
 lib/private/Files/View.php             | 55 +++++++++++++-------------
 3 files changed, 33 insertions(+), 36 deletions(-)

diff --git a/lib/private/Files/Cache/CacheEntry.php b/lib/private/Files/Cache/CacheEntry.php
index c558ec7721e8f..220763f773bb6 100644
--- a/lib/private/Files/Cache/CacheEntry.php
+++ b/lib/private/Files/Cache/CacheEntry.php
@@ -90,7 +90,7 @@ public function getEtag() {
 		return $this->data['etag'];
 	}
 
-	public function getPermissions() {
+	public function getPermissions(): int {
 		return $this->data['permissions'];
 	}
 
diff --git a/lib/private/Files/Mount/Manager.php b/lib/private/Files/Mount/Manager.php
index 55de488c726cd..c38fefab734f4 100644
--- a/lib/private/Files/Mount/Manager.php
+++ b/lib/private/Files/Mount/Manager.php
@@ -110,7 +110,6 @@ public function find(string $path): IMountPoint {
 	/**
 	 * Find all mounts in $path
 	 *
-	 * @param string $path
 	 * @return IMountPoint[]
 	 */
 	public function findIn(string $path): array {
@@ -122,11 +121,10 @@ public function findIn(string $path): array {
 		}
 
 		$result = [];
-		$pathLength = \strlen($path);
-		$mountPoints = array_keys($this->mounts);
-		foreach ($mountPoints as $mountPoint) {
-			if (substr($mountPoint, 0, $pathLength) === $path && \strlen($mountPoint) > $pathLength) {
-				$result[] = $this->mounts[$mountPoint];
+		$pathLen = strlen($path);
+		foreach ($this->mounts as $mountPoint => $mount) {
+			if (strlen($mountPoint) > $pathLen && strncmp($mountPoint, $path, $pathLen) === 0) {
+				$result[] = $mount;
 			}
 		}
 
@@ -134,7 +132,7 @@ public function findIn(string $path): array {
 		return $result;
 	}
 
-	public function clear() {
+	public function clear(): void {
 		$this->mounts = [];
 		$this->pathCache->clear();
 		$this->inPathCache->clear();
diff --git a/lib/private/Files/View.php b/lib/private/Files/View.php
index f731da58b677d..4a9ef9f813814 100644
--- a/lib/private/Files/View.php
+++ b/lib/private/Files/View.php
@@ -31,6 +31,8 @@
 use OCP\Files\Mount\IMountPoint;
 use OCP\Files\NotFoundException;
 use OCP\Files\ReservedWordException;
+use OCP\Files\StorageInvalidException;
+use OCP\Files\StorageNotAvailableException;
 use OCP\IUser;
 use OCP\IUserManager;
 use OCP\L10N\IFactory;
@@ -1350,11 +1352,7 @@ public function hasUpdated($path, $time) {
 		return $this->basicOperation('hasUpdated', $path, [], $time);
 	}
 
-	/**
-	 * @param string $ownerId
-	 * @return IUser
-	 */
-	private function getUserObjectForOwner(string $ownerId) {
+	private function getUserObjectForOwner(string $ownerId): IUser {
 		return new LazyUser($ownerId, $this->userManager);
 	}
 
@@ -1511,35 +1509,38 @@ public function getDirectoryContent($directory, $mimetype_filter = '', ?\OCP\Fil
 		$contents = $cache->getFolderContentsById($folderId); //TODO: mimetype_filter
 
 		$sharingDisabled = \OCP\Util::isSharingDisabledForUser();
+		$permissionsMask = ~\OCP\Constants::PERMISSION_SHARE;
+
+		$files = [];
+		foreach ($contents as $content) {
+			$name = $content->getName();
+			$contentPath = $content->getPath();
 
-		$fileNames = array_map(function (ICacheEntry $content) {
-			return $content->getName();
-		}, $contents);
-		/**
-		 * @var \OC\Files\FileInfo[] $fileInfos
-		 */
-		$fileInfos = array_map(function (ICacheEntry $content) use ($path, $storage, $mount, $sharingDisabled) {
 			if ($sharingDisabled) {
-				$content['permissions'] = $content['permissions'] & ~\OCP\Constants::PERMISSION_SHARE;
-			}
-			$ownerId = $storage->getOwner($content['path']);
-			if ($ownerId !== false) {
-				$owner = $this->getUserObjectForOwner($ownerId);
-			} else {
-				$owner = null;
+				$content['permissions'] = $content->getPermissions() & $permissionsMask;
 			}
-			return new FileInfo($path . '/' . $content['name'], $storage, $content['path'], $content, $mount, $owner);
-		}, $contents);
-		$files = array_combine($fileNames, $fileInfos);
+
+			$ownerId = $storage->getOwner($contentPath);
+			$owner = $ownerId !== false
+				? $this->getUserObjectForOwner($ownerId)
+				: null;
+
+			$files[$name] = new FileInfo(
+				$path . '/' . $name,
+				$storage,
+				$contentPath,
+				$content,
+				$mount,
+				$owner
+			);
+		}
 
 		//add a folder for any mountpoint in this directory and add the sizes of other mountpoints to the folders
 		$mounts = Filesystem::getMountManager()->findIn($path);
 
 		// make sure nested mounts are sorted after their parent mounts
 		// otherwise doesn't propagate the etag across storage boundaries correctly
-		usort($mounts, function (IMountPoint $a, IMountPoint $b) {
-			return $a->getMountPoint() <=> $b->getMountPoint();
-		});
+		usort($mounts, static fn (IMountPoint $a, IMountPoint $b): int => $a->getMountPoint() <=> $b->getMountPoint());
 
 		$dirLength = strlen($path);
 		foreach ($mounts as $mount) {
@@ -1553,9 +1554,7 @@ public function getDirectoryContent($directory, $mimetype_filter = '', ?\OCP\Fil
 					$subScanner = $subStorage->getScanner();
 					try {
 						$subScanner->scanFile('');
-					} catch (\OCP\Files\StorageNotAvailableException $e) {
-						continue;
-					} catch (\OCP\Files\StorageInvalidException $e) {
+					} catch (StorageNotAvailableException|StorageInvalidException) {
 						continue;
 					} catch (\Exception $e) {
 						// sometimes when the storage is not available it can be any exception