From e687a59c8a6b5962b9b27cc8f7a683bab99e5006 Mon Sep 17 00:00:00 2001
From: Greg V <greg@unrelenting.technology>
Date: Wed, 15 Apr 2020 01:01:13 +0300
Subject: [PATCH 1/2] freebsdlike: add SCM_CREDS

It is present on both FreeBSD and DragonFly
---
 src/unix/bsd/freebsdlike/mod.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/unix/bsd/freebsdlike/mod.rs b/src/unix/bsd/freebsdlike/mod.rs
index 509bf8c08e975..b10f60f18b625 100644
--- a/src/unix/bsd/freebsdlike/mod.rs
+++ b/src/unix/bsd/freebsdlike/mod.rs
@@ -738,6 +738,7 @@ pub const MSG_DONTWAIT: ::c_int = 0x00000080;
 pub const MSG_EOF: ::c_int = 0x00000100;
 
 pub const SCM_TIMESTAMP: ::c_int = 0x02;
+pub const SCM_CREDS: ::c_int = 0x03;
 
 pub const SOCK_STREAM: ::c_int = 1;
 pub const SOCK_DGRAM: ::c_int = 2;

From d8764e8b78b2736ecd74f3fd29d6767e40cac491 Mon Sep 17 00:00:00 2001
From: Greg V <greg@unrelenting.technology>
Date: Wed, 15 Apr 2020 14:55:21 +0300
Subject: [PATCH 2/2] freebsd: add sockcred/SOCKCREDSIZE

Like on NetBSD, but without a pid field in the struct.
---
 src/unix/bsd/freebsdlike/freebsd/mod.rs | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/unix/bsd/freebsdlike/freebsd/mod.rs b/src/unix/bsd/freebsdlike/freebsd/mod.rs
index 1b714b77514ab..d9dc4f2f7459a 100644
--- a/src/unix/bsd/freebsdlike/freebsd/mod.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/mod.rs
@@ -107,6 +107,15 @@ s! {
         pub msg_hdr: ::msghdr,
         pub msg_len: ::ssize_t,
     }
+
+    pub struct sockcred {
+        pub sc_uid: ::uid_t,
+        pub sc_euid: ::uid_t,
+        pub sc_gid: ::gid_t,
+        pub sc_egid: ::gid_t,
+        pub sc_ngroups: ::c_int,
+        pub sc_groups: [::gid_t; 1],
+    }
 }
 
 s_no_extra_traits! {
@@ -1136,6 +1145,15 @@ f! {
             as ::c_uint
     }
 
+    pub fn SOCKCREDSIZE(ngrps: usize) -> usize {
+        let ngrps = if ngrps > 0 {
+            ngrps - 1
+        } else {
+            0
+        };
+        ::mem::size_of::<sockcred>() + ::mem::size_of::<::gid_t>() * ngrps
+    }
+
     pub fn uname(buf: *mut ::utsname) -> ::c_int {
         __xuname(256, buf as *mut ::c_void)
     }