| // Copyright 2016 The Vanadium 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 lockutil |
| |
| import ( |
| "io/ioutil" |
| "os" |
| "strconv" |
| "strings" |
| ) |
| |
| func getSystemID() (string, error) { |
| for _, path := range []string{"/etc/machine-id", "/var/lib/dbus/machine-id"} { |
| b, err := ioutil.ReadFile(path) |
| if err == nil { |
| return strings.TrimSpace(string(b)), nil |
| } |
| } |
| fi, err := os.Stat("/proc/1") |
| if err != nil { |
| return "", err |
| } |
| return strconv.FormatInt(fi.ModTime().UnixNano(), 10), nil |
| } |
