289e1d8b2a
currently crawler waits for an entire readdir call to return until it processes usage, lifecycle, replication and healing - instead we should pass the applicator all the way down to avoid building any special stack for all the contents in a single directory. This allows for - no need to remember the entire list of entries per directory before applying the required functions - no need to wait for entire readdir() call to finish before applying the required functions
133 lines
3.2 KiB
Go
133 lines
3.2 KiB
Go
// +build windows
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/*
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* MinIO Cloud Storage, (C) 2016-2020 MinIO, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import (
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"io"
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"os"
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"syscall"
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)
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// Return all the entries at the directory dirPath.
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func readDir(dirPath string) (entries []string, err error) {
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return readDirN(dirPath, -1)
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}
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// readDirFn applies the fn() function on each entries at dirPath, doesn't recurse into
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// the directory itself, if the dirPath doesn't exist this function doesn't return
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// an error.
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func readDirFn(dirPath string, filter func(name string, typ os.FileMode) error) error {
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f, err := os.Open(dirPath)
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if err != nil {
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if osErrToFileErr(err) == errFileNotFound {
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return nil
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}
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return osErrToFileErr(err)
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}
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defer f.Close()
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data := &syscall.Win32finddata{}
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for {
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e := syscall.FindNextFile(syscall.Handle(f.Fd()), data)
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if e != nil {
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if e == syscall.ERROR_NO_MORE_FILES {
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break
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} else {
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if isSysErrPathNotFound(e) {
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return nil
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}
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return osErrToFileErr(&os.PathError{
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Op: "FindNextFile",
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Path: dirPath,
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Err: e,
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})
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}
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}
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name := syscall.UTF16ToString(data.FileName[0:])
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if name == "" || name == "." || name == ".." { // Useless names
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continue
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}
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if data.FileAttributes&syscall.FILE_ATTRIBUTE_REPARSE_POINT != 0 {
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continue
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}
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var typ os.FileMode = 0 // regular file
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if data.FileAttributes&syscall.FILE_ATTRIBUTE_DIRECTORY != 0 {
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typ = os.ModeDir
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}
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if e = filter(name, typ); e == errDoneForNow {
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// filtering requested to return by caller.
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return nil
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}
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}
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return nil
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}
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// Return N entries at the directory dirPath. If count is -1, return all entries
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func readDirN(dirPath string, count int) (entries []string, err error) {
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f, err := os.Open(dirPath)
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if err != nil {
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return nil, osErrToFileErr(err)
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}
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defer f.Close()
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// Check if file or dir. This is the quickest way.
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_, err = f.Seek(0, io.SeekStart)
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if err == nil {
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return nil, errFileNotFound
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}
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data := &syscall.Win32finddata{}
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handle := syscall.Handle(f.Fd())
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for count != 0 {
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e := syscall.FindNextFile(handle, data)
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if e != nil {
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if e == syscall.ERROR_NO_MORE_FILES {
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break
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} else {
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return nil, osErrToFileErr(&os.PathError{
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Op: "FindNextFile",
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Path: dirPath,
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Err: e,
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})
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}
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}
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name := syscall.UTF16ToString(data.FileName[0:])
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if name == "" || name == "." || name == ".." { // Useless names
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continue
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}
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switch {
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case data.FileAttributes&syscall.FILE_ATTRIBUTE_REPARSE_POINT != 0:
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continue
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case data.FileAttributes&syscall.FILE_ATTRIBUTE_DIRECTORY != 0:
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entries = append(entries, name+SlashSeparator)
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default:
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entries = append(entries, name)
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}
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count--
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}
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return entries, nil
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}
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func globalSync() {
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// no-op on windows
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}
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