Vendor github.com/coreos/go-systemd/util

Signed-off-by: Antonio Murdaca <runcom@linux.com>

Godeps/Godeps.json

@@ -17,6 +17,11 @@
 			"Comment": "v3",
 			"Rev": "be94bc700879ae8217780e9d141789a2defa302b"
 		},
+		{
+			"ImportPath": "github.com/coreos/go-systemd/util",
+			"Comment": "v3",
+			"Rev": "be94bc700879ae8217780e9d141789a2defa302b"
+		},
 		{
 			"ImportPath": "github.com/docker/docker/pkg/mount",
 			"Comment": "v1.4.1-4127-gb81f2ee",

Godeps/_workspace/src/github.com/coreos/go-systemd/util/util.go

@@ -0,0 +1,33 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package util contains utility functions related to systemd that applications
+// can use to check things like whether systemd is running.
+package util
+
+import (
+	"os"
+)
+
+// IsRunningSystemd checks whether the host was booted with systemd as its init
+// system. This functions similar to systemd's `sd_booted(3)`: internally, it
+// checks whether /run/systemd/system/ exists and is a directory.
+// http://www.freedesktop.org/software/systemd/man/sd_booted.html
+func IsRunningSystemd() bool {
+	fi, err := os.Lstat("/run/systemd/system")
+	if err != nil {
+		return false
+	}
+	return fi.IsDir()
+}