Filter symbols which are available in bindings

xpc-sys/build.rs

@@ -25,6 +25,13 @@ fn main() {
         // bindings for.
         .header(xpc_path)
         .header(bootstrap_path)
+        // Filter the results to only relevant symbols
+        .allowlist_function("^xpc_.*")
+        .allowlist_var("^_xpc_.*")
+        .allowlist_var("^bootstrap_port")
+        // The following symbols should probably be in libc or mach2, but are not
+        .allowlist_function("^mach_port.*")
+        .allowlist_function("^vm_allocate")
         // Tell cargo to invalidate the built crate whenever any of the
         // included header files changed.
         .parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))

xpc-sys/src/lib.rs

@@ -8,6 +8,7 @@ extern crate lazy_static;
 #[macro_use]
 extern crate bitflags;
 
+pub use libc::MAP_SHARED;
 use libc::{geteuid, mach_task_self_, strerror, sysctlbyname, KERN_SUCCESS, MACH_PORT_NULL};
 use std::ffi::{CStr, CString};
 use std::os::raw::{c_char, c_int, c_long, c_void};