From 8fe740473542fc26d19d2ec33f9a22df109753c4 Mon Sep 17 00:00:00 2001
From: Robin Appelman <robin@icewind.nl>
Date: Fri, 23 Oct 2026 15:14:56 +0200
Subject: [PATCH] feat: add method for deleting user mounts by root id

Signed-off-by: Robin Appelman <robin@icewind.nl>
---
 lib/private/Files/Config/UserMountCache.php | 13 +++++++++++++
 lib/public/Files/Config/IUserMountCache.php |  7 +++++++
 2 files changed, 20 insertions(+)

diff --git a/lib/private/Files/Config/UserMountCache.php b/lib/private/Files/Config/UserMountCache.php
index 1430ab469eff3..5b8ad021589f8 100644
--- a/lib/private/Files/Config/UserMountCache.php
+++ b/lib/private/Files/Config/UserMountCache.php
@@ -574,6 +574,19 @@ public function removeMount(string $mountPoint, ?IUser $user = null): void {
 		}
 	}
 
+	#[\Override]
+	public function removeMountsForRoot(int $rootId, ?IUser $user = null): void {
+		$query = $this->connection->getQueryBuilder();
+		$query->delete('mounts')
+			->where($query->expr()->eq('root_id', $query->createNamedParameter($rootId, IQueryBuilder::PARAM_INT)));
+		if ($user) {
+			$query->andWhere($query->expr()->eq('user_id', $query->createNamedParameter($user->getUID())));
+		}
+		$query->executeStatement();
+
+		$this->clear();
+	}
+
 	#[\Override]
 	public function addMount(
 		IUser $user,
diff --git a/lib/public/Files/Config/IUserMountCache.php b/lib/public/Files/Config/IUserMountCache.php
index 9ff3118664d07..5ff7ef21fa4d3 100644
--- a/lib/public/Files/Config/IUserMountCache.php
+++ b/lib/public/Files/Config/IUserMountCache.php
@@ -145,6 +145,13 @@ public function getMountsInPath(IUser $user, string $path): array;
 	 */
 	public function removeMount(string $mountPoint, ?IUser $user = null): void;
 
+	/**
+	 * Remove all mounts for a given root id
+	 *
+	 * @since 36.0.0
+	 */
+	public function removeMountsForRoot(int $rootId): void;
+
 	/**
 	 * Register a new mountpoint for a user
 	 *