From 9f7f681e26887a9b284a2f25e8252c3a5077f348 Mon Sep 17 00:00:00 2001
From: Matt Mastracci <matthew@mastracci.com>
Date: Wed, 8 May 2024 14:39:06 -0600
Subject: fix(runtime): allow nul device on windows (#23741)

Fixes [23721](https://github.com/denoland/deno/issues/23721)
---
 runtime/permissions/lib.rs | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'runtime/permissions')

diff --git a/runtime/permissions/lib.rs b/runtime/permissions/lib.rs
index e66f16a7f..70d1abae7 100644
--- a/runtime/permissions/lib.rs
+++ b/runtime/permissions/lib.rs
@@ -1696,6 +1696,12 @@ impl PermissionsContainer {
         self.check_was_allow_all_flag_passed().map_err(error_all)?;
       }
     } else if cfg!(target_os = "windows") {
+      // \\.\nul is allowed
+      let s = path.as_os_str().as_encoded_bytes();
+      if s.eq_ignore_ascii_case(br#"\\.\nul"#) {
+        return Ok(());
+      }
+
       fn is_normalized_windows_drive_path(path: &Path) -> bool {
         let s = path.as_os_str().as_encoded_bytes();
         // \\?\X:\
-- 
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