1 files changed, 46 insertions, 0 deletions

diff --git a/vendor/golang.org/x/sys/unix/sockcmsg_unix_other.go b/vendor/golang.org/x/sys/unix/sockcmsg_unix_other.go
new file mode 100644
index 0000000..4a1eab3
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/sockcmsg_unix_other.go
@@ -0,0 +1,46 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build aix || darwin || freebsd || linux || netbsd || openbsd || solaris || zos
+
+package unix
+
+import (
+        "runtime"
+)
+
+// Round the length of a raw sockaddr up to align it properly.
+func cmsgAlignOf(salen int) int {
+        salign := SizeofPtr
+
+        // dragonfly needs to check ABI version at runtime, see cmsgAlignOf in
+        // sockcmsg_dragonfly.go
+        switch runtime.GOOS {
+        case "aix":
+                // There is no alignment on AIX.
+                salign = 1
+        case "darwin", "ios", "illumos", "solaris":
+                // NOTE: It seems like 64-bit Darwin, Illumos and Solaris
+                // kernels still require 32-bit aligned access to network
+                // subsystem.
+                if SizeofPtr == 8 {
+                        salign = 4
+                }
+        case "netbsd", "openbsd":
+                // NetBSD and OpenBSD armv7 require 64-bit alignment.
+                if runtime.GOARCH == "arm" {
+                        salign = 8
+                }
+                // NetBSD aarch64 requires 128-bit alignment.
+                if runtime.GOOS == "netbsd" && runtime.GOARCH == "arm64" {
+                        salign = 16
+                }
+        case "zos":
+                // z/OS socket macros use [32-bit] sizeof(int) alignment,
+                // not pointer width.
+                salign = SizeofInt
+        }
+
+        return (salen + salign - 1) & ^(salign - 1)
+}