66 lines
1.7 KiB
Go
66 lines
1.7 KiB
Go
// Copyright 2009 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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// Modified by Zillode to fix https://github.com/syncthing/syncthing/issues/1822
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// Sync with https://github.com/golang/go/blob/master/src/os/path.go
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// See https://github.com/golang/go/issues/10900
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package osutil
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import (
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"os"
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"path/filepath"
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"syscall"
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)
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// MkdirAll creates a directory named path, along with any necessary parents,
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// and returns nil, or else returns an error.
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// The permission bits perm are used for all directories that MkdirAll creates.
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// If path is already a directory, MkdirAll does nothing and returns nil.
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func MkdirAll(path string, perm os.FileMode) error {
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// Fast path: if we can tell whether path is a directory or file, stop with success or error.
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dir, err := os.Stat(path)
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if err == nil {
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if dir.IsDir() {
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return nil
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}
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return &os.PathError{"mkdir", path, syscall.ENOTDIR}
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}
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// Slow path: make sure parent exists and then call Mkdir for path.
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i := len(path)
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for i > 0 && os.IsPathSeparator(path[i-1]) { // Skip trailing path separator.
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i--
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}
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j := i
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for j > 0 && !os.IsPathSeparator(path[j-1]) { // Scan backward over element.
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j--
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}
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if j > 1 {
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// Create parent
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parent := path[0 : j-1]
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if parent != filepath.VolumeName(parent) {
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err = MkdirAll(parent, perm)
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if err != nil {
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return err
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}
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}
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}
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// Parent now exists; invoke Mkdir and use its result.
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err = os.Mkdir(path, perm)
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if err != nil {
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// Handle arguments like "foo/." by
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// double-checking that directory doesn't exist.
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dir, err1 := os.Lstat(path)
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if err1 == nil && dir.IsDir() {
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return nil
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}
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return err
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}
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return nil
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}
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