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// Copyright 2019 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 poll_test
import (
"errors"
"internal/poll"
"os"
"syscall"
)
func badStateFile() (*os.File, error) {
if os.Getuid() != 0 {
return nil, errors.New("must be root")
}
// Using OpenFile for a device file is an easy way to make a
// file attached to the runtime-integrated network poller and
// configured in halfway.
return os.OpenFile("/dev/net/tun", os.O_RDWR, 0)
}
func isBadStateFileError(err error) (string, bool) {
switch err {
case poll.ErrNotPollable, syscall.EBADFD:
return "", true
default:
return "not pollable or file in bad state error", false
}
}
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