From b5e764d967a11626dd0f54d01d2452b74783ee8e Mon Sep 17 00:00:00 2001
From: Wildan M <willnode@wellosoft.net>
Date: Tue, 23 Jun 2026 12:22:31 +0700
Subject: [PATCH] Fix posix_spawn launching sh script

---
 redox-rt/src/proc.rs      | 5 +++++
 src/platform/redox/mod.rs | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/redox-rt/src/proc.rs b/redox-rt/src/proc.rs
index 64e9caf6f0..34b321e5ae 100644
--- a/redox-rt/src/proc.rs
+++ b/redox-rt/src/proc.rs
@@ -85,6 +85,11 @@ pub fn fexec_impl(
     pread_all(&image_file, 0, &mut header_bytes)?;
     let header = Header::from_bytes(&header_bytes);
 
+    if header.e_ident[..4] != [0x7F, 0x45, 0x4C, 0x46] {
+        // Not an ELF, according to posix_spawn() just throw error here
+        return Err(Error::new(ENOEXEC));
+    }
+
     let grants_fd = if let Some(interp) = interp_override.as_ref() {
         FdGuard::new(interp.grants_fd).to_upper()?
     } else {
diff --git a/src/platform/redox/mod.rs b/src/platform/redox/mod.rs
index 5655420c2b..b849ab0287 100644
--- a/src/platform/redox/mod.rs
+++ b/src/platform/redox/mod.rs
@@ -1332,7 +1332,7 @@ impl Pal for Sys {
         //         .map(|s| str::from_utf8(s).unwrap_or("???"))
         //         .collect::<Vec<_>>()
         //         .as_slice(),
-        //     cwd.as_bytes()
+        //     cwd.as_str()
         // );
 
         new_file_table.call_wo(