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// Copyright 2018 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.
package os
import "syscall"
// gethostname syscall cannot be used because it also returns the domain.
// Therefore, hostname is retrieve with uname syscall and the Nodename field.
func hostname() (name string, err error) {
var u syscall.Utsname
if errno := syscall.Uname(&u); errno != nil {
return "", NewSyscallError("uname", errno)
}
b := make([]byte, len(u.Nodename))
i := 0
for ; i < len(u.Nodename); i++ {
if u.Nodename[i] == 0 {
break
}
b[i] = byte(u.Nodename[i])
}
return string(b[:i]), nil
}
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