libgo/go/os/sys_linux.go

   1 // 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
   7 package os
   8
   9 func hostname() (name string, err error) {
  10         f, err := Open("/proc/sys/kernel/hostname")
  11         if err != nil {
  12                 return "", err
  13         }
  14         defer f.Close()
  15
  16         var buf [512]byte // Enough for a DNS name.
  17         n, err := f.Read(buf[0:])
  18         if err != nil {
  19                 return "", err
  20         }
  21
  22         if n > 0 && buf[n-1] == '\n' {
  23                 n--
  24         }
  25         return string(buf[0:n]), nil
  26 }