Polyfill posix_spawn_file_actions_addchdir_np

bwoebi · bwoebi · commit 5336ca07c303 · 2025-06-17T14:46:35.000+02:00
Signed-off-by: Bob Weinand &lt;bob.weinand@datadoghq.com&gt;
diff --git a/Cargo.lock b/Cargo.lock
diff --git a/components-rs/Cargo.toml b/components-rs/Cargo.toml
@@ -45,6 +45,7 @@ serde_json = "1.0.113"
 regex = "1.10.5"
 regex-automata = "0.4.5"
 http = "1.0"
+libc = "0.2"
 
 [build-dependencies]
 cbindgen = "0.27"
diff --git a/components-rs/lib.rs b/components-rs/lib.rs
@@ -94,3 +94,16 @@ pub extern "C" fn ddog_library_configurator_new_dummy(
 ) -> Box<Configurator> {
     datadog_library_config_ffi::ddog_library_configurator_new(debug_logs, language)
 }
+
+// Starting with https://github.com/rust-lang/rust/commit/7f74c894b0e31f370b5321d94f2ca2830e1d30fd
+// rust assumes posix_spawn_file_actions_addchdir_np exists. Thus we need to polyfill it here.
+#[no_mangle]
+#[cfg(all(target_os = "linux", target_env = "musl"))]
+pub unsafe extern "C" fn posix_spawn_file_actions_addchdir_np(file_actions: *mut libc::c_void, path: *const libc::c_char) -> libc::c_int {
+    let sym = std::mem::transmute::<*mut libc::c_void, std::option::Option<extern "C" fn(*mut libc::c_void, *const libc::c_char) -> libc::c_int>>(libc::dlsym(null_mut(), c"posix_spawn_file_actions_addchdir_np".as_ptr()));
+    if let Some(sym) = sym {
+        sym(file_actions, path)
+    } else {
+        -libc::ENOSYS
+    }
+}
