Hulk did something

[bytom/vapor.git] / vendor / golang.org / x / net / internal / socket / sys.go

diff --git a/vendor/golang.org/x/net/internal/socket/sys.go b/vendor/golang.org/x/net/internal/socket/sys.go
new file mode 100644 (file)
index 0000000..4f0eead
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys.go
@@ -0,0 +1,33 @@
+// Copyright 2017 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.
+
+package socket
+
+import (
+       "encoding/binary"
+       "unsafe"
+)
+
+var (
+       // NativeEndian is the machine native endian implementation of
+       // ByteOrder.
+       NativeEndian binary.ByteOrder
+
+       kernelAlign int
+)
+
+func init() {
+       i := uint32(1)
+       b := (*[4]byte)(unsafe.Pointer(&i))
+       if b[0] == 1 {
+               NativeEndian = binary.LittleEndian
+       } else {
+               NativeEndian = binary.BigEndian
+       }
+       kernelAlign = probeProtocolStack()
+}
+
+func roundup(l int) int {
+       return (l + kernelAlign - 1) & ^(kernelAlign - 1)
+}