From b26885fbc1a42b3fb148f9ecca460714670af116 Mon Sep 17 00:00:00 2001
From: ptitSeb <sebastien.chev@gmail.com>
Date: Thu, 11 Aug 2022 10:33:58 +0200
Subject: [PATCH] Fixed a potential issue when renaming a file and the
 destination is from a preopened dir and already exist (for #3084)

---
 lib/wasi/src/syscalls/mod.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/lib/wasi/src/syscalls/mod.rs b/lib/wasi/src/syscalls/mod.rs
index 51f7595f20c..0c5266e6efc 100644
--- a/lib/wasi/src/syscalls/mod.rs
+++ b/lib/wasi/src/syscalls/mod.rs
@@ -2656,6 +2656,18 @@ pub fn path_rename<M: MemorySize>(
         source_path.to_str().as_ref().unwrap(),
         true
     ));
+    if state
+        .fs
+        .get_inode_at_path(
+            inodes.deref_mut(),
+            new_fd,
+            target_path.to_str().as_ref().unwrap(),
+            true,
+        )
+        .is_ok()
+    {
+        return __WASI_EEXIST;
+    }
     let (source_parent_inode, source_entry_name) =
         wasi_try!(state
             .fs