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// Copyright 2011 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.
//go:build unix
package net
import (
"internal/poll"
"os"
"syscall"
)
const _SO_TYPE = syscall.SO_TYPE
func dupFileSocket(f *os.File) (int, error) {
s, call, err := poll.DupCloseOnExec(int(f.Fd()))
if err != nil {
if call != "" {
err = os.NewSyscallError(call, err)
}
return -1, err
}
if err := syscall.SetNonblock(s, true); err != nil {
poll.CloseFunc(s)
return -1, os.NewSyscallError("setnonblock", err)
}
return s, nil
}
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