// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package os
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import "syscall"
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// gethostname syscall cannot be used because it also returns the domain.
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// Therefore, hostname is retrieve with uname syscall and the Nodename field.
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func hostname() (name string, err error) {
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var u syscall.Utsname
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if errno := syscall.Uname(&u); errno != nil {
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return "", NewSyscallError("uname", errno)
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}
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b := make([]byte, len(u.Nodename))
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i := 0
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for ; i < len(u.Nodename); i++ {
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if u.Nodename[i] == 0 {
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break
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}
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b[i] = byte(u.Nodename[i])
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}
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return string(b[:i]), nil
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}
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