From d7f6c1068e809e2ffc5102638654e42c8fffc127 Mon Sep 17 00:00:00 2001
From: Yage Hu <me@huyage.dev>
Date: Mon, 18 Dec 2023 09:35:56 -0800
Subject: [PATCH] Fix preopened directory mapping to virtual root

This commit fixes the bug where preopening `.` causes the WASI runner to
map it to the virtual root, causing `path_open` to fail.

fixes https://github.com/wasmerio/wasmer/issues/4361
---
 lib/wasix/src/runners/wasi_common.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/wasix/src/runners/wasi_common.rs b/lib/wasix/src/runners/wasi_common.rs
index d02fa7d2185..8c10868f746 100644
--- a/lib/wasix/src/runners/wasi_common.rs
+++ b/lib/wasix/src/runners/wasi_common.rs
@@ -49,7 +49,7 @@ impl CommonWasiOptions {
 
         if self.mapped_dirs.iter().all(|m| m.guest != ".") {
             // The user hasn't mounted "." to anything, so let's map it to "/"
-            builder.add_map_dir(".", "/")?;
+            builder.add_map_dir(".", "/mnt/host")?;
         }
 
         builder.set_fs(Box::new(fs));