From 03c0e3024c80fce1c0001ee5bf83808c0119155a Mon Sep 17 00:00:00 2001
From: Josh Megnauth <jo.sh@tutanota.com>
Date: Thu, 18 Sep 2025 02:38:15 -0400
Subject: [PATCH] Export fexecve

It turns out we have fexecve but it wasn't exported in unistd.h.

Related: #184
---
 src/header/unistd/mod.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/header/unistd/mod.rs b/src/header/unistd/mod.rs
index 46617a3b2e..12a7b4d6da 100644
--- a/src/header/unistd/mod.rs
+++ b/src/header/unistd/mod.rs
@@ -344,6 +344,18 @@ pub unsafe extern "C" fn execve(
         .or_minus_one_errno()
 }
 
+/// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/exec.html>.
+#[no_mangle]
+pub unsafe extern "C" fn fexecve(
+    fd: c_int,
+    argv: *const *mut c_char,
+    envp: *const *mut c_char,
+) -> c_int {
+    Sys::fexecve(fd, argv, envp)
+        .map(|()| unreachable!())
+        .or_minus_one_errno()
+}
+
 #[cfg(target_os = "linux")]
 const PATH_SEPARATOR: u8 = b':';