unix: Add [RWX]_OK constants for Access
POSIX defines [FRWX]_OK flags as the second arg to access() (Access()
here). Only F_OK was defined heretofore. This adds the missing
[RWX]_OK constants.
Fixes golang/go#6262
Change-Id: Ie96273db19aa21af92c46affea9509afe0efe63f
Reviewed-on: https://go-review.googlesource.com/7852
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
diff --git a/unix/constants.go b/unix/constants.go
new file mode 100644
index 0000000..a96f0eb
--- /dev/null
+++ b/unix/constants.go
@@ -0,0 +1,13 @@
+// Copyright 2015 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.
+
+// +build darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package unix
+
+const (
+ R_OK = 0x4
+ W_OK = 0x2
+ X_OK = 0x1
+)
