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36 lines
885 B
Go
36 lines
885 B
Go
// 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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// +build darwin
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// +build arm arm64
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package poll
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import (
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"syscall"
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_ "unsafe" // for go:linkname
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)
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// OpenDir returns a pointer to a DIR structure suitable for
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// ReadDir. In case of an error, the name of the failed
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// syscall is returned along with a syscall.Errno.
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func (fd *FD) OpenDir() (uintptr, string, error) {
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// fdopendir(3) takes control of the file descriptor,
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// so use a dup.
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fd2, call, err := fd.Dup()
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if err != nil {
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return 0, call, err
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}
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dir, err := fdopendir(fd2)
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if err != nil {
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syscall.Close(fd2)
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return 0, "fdopendir", err
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}
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return dir, "", nil
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}
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// Implemented in syscall/syscall_darwin.go.
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//go:linkname fdopendir syscall.fdopendir
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func fdopendir(fd int) (dir uintptr, err error)
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