mirror of
https://github.com/minio/minio
synced 2024-09-06 00:37:25 +00:00
204 lines
5.1 KiB
Go
204 lines
5.1 KiB
Go
//go:build windows
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// +build windows
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// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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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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func access(name string) error {
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_, err := os.Lstat(name)
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return err
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}
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func osMkdirAll(dirPath string, perm os.FileMode) error {
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return os.MkdirAll(dirPath, perm)
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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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// Ensure we don't pick up files as directories.
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globAll := filepath.Clean(dirPath) + `\*`
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globAllP, err := syscall.UTF16PtrFromString(globAll)
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if err != nil {
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return errInvalidArgument
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}
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data := &syscall.Win32finddata{}
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handle, err := syscall.FindFirstFile(globAllP, data)
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if err != nil {
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if err = syscallErrToFileErr(dirPath, err); err == errFileNotFound {
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return nil
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}
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return err
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}
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defer syscall.FindClose(handle)
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for ; ; err = syscall.FindNextFile(handle, data) {
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if err != nil {
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if err == syscall.ERROR_NO_MORE_FILES {
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break
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} else {
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if isSysErrPathNotFound(err) {
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return nil
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}
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err = osErrToFileErr(&os.PathError{
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Op: "FindNextFile",
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Path: dirPath,
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Err: err,
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})
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if err == errFileNotFound {
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return nil
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}
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return err
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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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var typ os.FileMode = 0 // regular file
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switch {
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case data.FileAttributes&syscall.FILE_ATTRIBUTE_REPARSE_POINT != 0:
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// Reparse point is a symlink
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fi, err := os.Stat(pathJoin(dirPath, string(name)))
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if err != nil {
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// It got deleted in the meantime, not found
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// or returns too many symlinks ignore this
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// file/directory.
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if osIsNotExist(err) || isSysErrPathNotFound(err) ||
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isSysErrTooManySymlinks(err) {
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continue
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}
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return err
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}
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if fi.IsDir() {
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// Ignore symlinked directories.
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continue
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}
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typ = fi.Mode()
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case data.FileAttributes&syscall.FILE_ATTRIBUTE_DIRECTORY != 0:
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typ = os.ModeDir
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}
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if err = filter(name, typ); err == 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.
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func readDirWithOpts(dirPath string, opts readDirOpts) (entries []string, err error) {
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// Ensure we don't pick up files as directories.
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globAll := filepath.Clean(dirPath) + `\*`
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globAllP, err := syscall.UTF16PtrFromString(globAll)
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if err != nil {
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return nil, errInvalidArgument
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}
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data := &syscall.Win32finddata{}
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handle, err := syscall.FindFirstFile(globAllP, data)
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if err != nil {
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return nil, syscallErrToFileErr(dirPath, err)
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}
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defer syscall.FindClose(handle)
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count := opts.count
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for ; count != 0; err = syscall.FindNextFile(handle, data) {
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if err != nil {
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if err == 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: err,
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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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// Reparse point is a symlink
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fi, err := os.Stat(pathJoin(dirPath, string(name)))
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if err != nil {
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// It got deleted in the meantime, not found
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// or returns too many symlinks ignore this
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// file/directory.
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if osIsNotExist(err) || isSysErrPathNotFound(err) ||
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isSysErrTooManySymlinks(err) {
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continue
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}
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return nil, err
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}
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if !opts.followDirSymlink && fi.IsDir() {
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// directory symlinks are ignored.
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continue
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}
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case data.FileAttributes&syscall.FILE_ATTRIBUTE_DIRECTORY != 0:
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name = name + SlashSeparator
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}
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count--
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entries = append(entries, name)
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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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func syscallErrToFileErr(dirPath string, err error) error {
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switch err {
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case nil:
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return nil
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case syscall.ERROR_FILE_NOT_FOUND:
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return errFileNotFound
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case syscall.ERROR_ACCESS_DENIED:
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return errFileAccessDenied
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default:
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// Fails on file not found and when not a directory.
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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: err,
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})
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}
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}
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