Merge pull request #682 from bmeneguele/fix-bsd

Fix build for BSD OSes family

Author: bmeneg

cmd/util_darwin.go cmd/util_bsd.gocmd/util_darwin.go renamed to cmd/util_bsd.go

@@ -1,15 +1,15 @@
-// This file contains Darwin (MacOS) specific calls.
+// This file contains Darwin (MacOS) and *BSD specific calls.
 
-// +build darwin
+// +build freebsd openbsd dragonfly darwin
 
 package cmd
 
 // Unfortunatelly MacOS don't have the DUP3() system call, which is forced
 // by Linux ARM64 not having the DUP2() anymore. With that, we need to
 // repeat the other code and func declarations that are the same.
 
-// FIXME: there MUST be some better way to do that... only dupFD2() should be
-// here.
+// FIXME: there MUST be some better way to do that... only dupFD2() should
+// be here.
 
 import "syscall"
 

cmd/util_unix.go cmd/util_linux.gocmd/util_unix.go renamed to cmd/util_linux.go

@@ -1,13 +1,10 @@
 // This file contains Linux specific calls.
 
-// +build !windows,!darwin
-
 package cmd
 
 // Since we're using some system calls that are platform-specific, we need
-// to make sure we have a small layer of compatibility for Unix-like and
-// Windows operating systems. For now, this file is still valid for BSDs
-// (MacOS NOT included)
+// to make sure we have a small layer of compatibility for Linux, Windows
+// and *BSD operating systems.
 
 import "syscall"
 

cmd/util_windows.go

@@ -1,7 +1,5 @@
 // This file contains Windows specific calls.
 
-// +build windows
-
 package cmd
 
 // Even though Windows has a POSIX layer, it's implemented in userspace and,