// 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 robustio

import (
	"errors"
	"syscall"
)

const errFileNotFound = syscall.ENOENT

// isEphemeralError returns true if err may be resolved by waiting.
func isEphemeralError(err error) bool {
	var errno syscall.Errno
	if errors.As(err, &errno) {
		return errno == errFileNotFound
	}
	return false
}

func getErrno(err error) (uintptr, bool) {
	var errno syscall.Errno
	if errors.As(err, &errno) {
		return uintptr(errno), true
	}
	return 0, false
}
