From 4e95a3713e77e56ee987894fd9daeaf52ceb9e02 Mon Sep 17 00:00:00 2001
From: Mahmoud Al-Qudsi <mqudsi@neosmart.net>
Date: Sat, 9 Mar 2024 22:05:23 -0600
Subject: [PATCH] Add test asserting stdlib uses O_CLOEXEC

---
 src/tests/mod.rs |  1 +
 src/tests/std.rs | 16 ++++++++++++++++
 2 files changed, 17 insertions(+)
 create mode 100644 src/tests/std.rs

diff --git a/src/tests/mod.rs b/src/tests/mod.rs
index a5c28822b..61c68ab55 100644
--- a/src/tests/mod.rs
+++ b/src/tests/mod.rs
@@ -18,6 +18,7 @@ mod parser;
 mod reader;
 mod redirection;
 mod screen;
+mod std;
 mod string_escape;
 mod threads;
 mod tokenizer;
diff --git a/src/tests/std.rs b/src/tests/std.rs
new file mode 100644
index 000000000..def07d1c8
--- /dev/null
+++ b/src/tests/std.rs
@@ -0,0 +1,16 @@
+//! This module contains tests that assert the functionality and behavior of the rust standard
+//! library, to ensure we can safely use its abstractions to perform low-level operations.
+
+use std::fs::File;
+use std::os::fd::AsRawFd;
+
+#[test]
+fn test_fd_cloexec() {
+    // Just open a file. Any file.
+    let file = File::create("test_file_for_fd_cloexec").unwrap();
+    let fd = file.as_raw_fd();
+    unsafe {
+        assert_eq!(libc::fcntl(fd, libc::F_GETFD) & libc::FD_CLOEXEC, libc::FD_CLOEXEC);
+    }
+    let _  = std::fs::remove_file("test_file_for_fd_cloexec");
+}