From 05efdfeee4efd8fc28d42f441fd04f7c59227fad Mon Sep 17 00:00:00 2001
From: LoveSy <shana@zju.edu.cn>
Date: Thu, 1 Feb 2024 22:38:11 +0800
Subject: [PATCH] Recursive bind mount

---
 userspace/ksud/src/mount.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/userspace/ksud/src/mount.rs b/userspace/ksud/src/mount.rs
index 0ebe88667e62..6dd326c159cc 100644
--- a/userspace/ksud/src/mount.rs
+++ b/userspace/ksud/src/mount.rs
@@ -152,7 +152,9 @@ fn bind_mount(from: impl AsRef<Path>, to: impl AsRef<Path>) -> Result<()> {
     let tree = open_tree(
         CWD,
         from.as_ref(),
-        OpenTreeFlags::OPEN_TREE_CLOEXEC | OpenTreeFlags::OPEN_TREE_CLONE,
+        OpenTreeFlags::OPEN_TREE_CLOEXEC
+            | OpenTreeFlags::OPEN_TREE_CLONE
+            | OpenTreeFlags::AT_RECURSIVE,
     )?;
     move_mount(
         tree.as_fd(),