blob: 76cdf5043239963d6a01430929edaf04af6e777a [file] [log] [blame]
Russ Coxb32769b2009-06-29 13:44:46 -07001// Copyright 2009 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5// Linux-specific
6
7package os
8
Alex Brainman994e0642012-01-17 16:51:54 +11009func hostname() (name string, err error) {
Rob Pike8a90fd32011-04-04 23:42:14 -070010 f, err := Open("/proc/sys/kernel/hostname")
Russ Coxb32769b2009-06-29 13:44:46 -070011 if err != nil {
Robert Griesemer40621d52009-11-09 12:07:39 -080012 return "", err
Russ Coxb32769b2009-06-29 13:44:46 -070013 }
Robert Griesemerd65a5cc2009-12-15 15:40:16 -080014 defer f.Close()
Russ Coxb32769b2009-06-29 13:44:46 -070015
Robert Griesemerd65a5cc2009-12-15 15:40:16 -080016 var buf [512]byte // Enough for a DNS name.
Russ Coxbb84f4b2010-05-27 14:51:47 -070017 n, err := f.Read(buf[0:])
Russ Coxb32769b2009-06-29 13:44:46 -070018 if err != nil {
Robert Griesemer40621d52009-11-09 12:07:39 -080019 return "", err
Russ Coxb32769b2009-06-29 13:44:46 -070020 }
21
22 if n > 0 && buf[n-1] == '\n' {
Robert Griesemer40621d52009-11-09 12:07:39 -080023 n--
Russ Coxb32769b2009-06-29 13:44:46 -070024 }
Robert Griesemerd65a5cc2009-12-15 15:40:16 -080025 return string(buf[0:n]), nil
Russ Coxb32769b2009-06-29 13:44:46 -070026}