blob: 8eb770c35818aae8ff6b68fdd4f147eeee4fc23f [file] [log] [blame]
// 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 poll
import (
_ "unsafe" // for go:linkname
// OpenDir returns a pointer to a DIR structure suitable for
// ReadDir. In case of an error, the name of the failed
// syscall is returned along with a syscall.Errno.
func (fd *FD) OpenDir() (uintptr, string, error) {
// fdopendir(3) takes control of the file descriptor,
// so use a dup.
fd2, call, err := fd.Dup()
if err != nil {
return 0, call, err
var dir uintptr
for {
dir, err = fdopendir(fd2)
if err != syscall.EINTR {
if err != nil {
return 0, "fdopendir", err
return dir, "", nil
// Implemented in syscall/syscall_darwin.go.
//go:linkname fdopendir syscall.fdopendir
func fdopendir(fd int) (dir uintptr, err error)