From 46933f03117ae7d0c8c992e13d7f11a3ca3207da Mon Sep 17 00:00:00 2001
From: Bryant Mairs <bryantmairs@google.com>
Date: Sun, 14 Jan 2018 20:44:34 -0800
Subject: [PATCH] Add sockaddr_ctl on Mac

---
 libc-test/build.rs        | 3 ++-
 src/unix/bsd/apple/mod.rs | 9 +++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/libc-test/build.rs b/libc-test/build.rs
index 21e17a1cbef4b..1c1b0f5c2579d 100644
--- a/libc-test/build.rs
+++ b/libc-test/build.rs
@@ -177,6 +177,7 @@ fn main() {
         cfg.header("net/route.h");
         cfg.header("netinet/if_ether.h");
         cfg.header("sys/proc_info.h");
+        cfg.header("sys/kern_control.h");
     }
 
     if bsdlike {
@@ -216,7 +217,7 @@ fn main() {
             cfg.header("sys/reg.h");
         }
     }
- 
+
     if linux || android || emscripten {
         cfg.header("malloc.h");
         cfg.header("net/ethernet.h");
diff --git a/src/unix/bsd/apple/mod.rs b/src/unix/bsd/apple/mod.rs
index 7281f91968e2e..83911e6250f16 100644
--- a/src/unix/bsd/apple/mod.rs
+++ b/src/unix/bsd/apple/mod.rs
@@ -498,6 +498,15 @@ s! {
         pub sin_tos: ::c_ushort,
         pub sin_other: ::c_ushort,
     }
+
+    pub struct sockaddr_ctl {
+        pub sc_len: ::c_uchar,
+        pub sc_family: ::c_uchar,
+        pub ss_sysaddr: ::uint16_t,
+        pub sc_id: ::uint32_t,
+        pub sc_unit: ::uint32_t,
+        pub sc_reserved: [::uint32_t; 5],
+    }
 }
 
 pub const _UTX_USERSIZE: usize = 256;