Initial commit based on https://github.com/minio/minio/releases/tag/RELEASE.2020-07-02T00-15-09Z

cmd/os-readdir_windows.go

@@ -0,0 +1,151 @@
+// +build windows
+
+/*
+ * MinIO Cloud Storage, (C) 2016-2020 MinIO, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package cmd
+
+import (
+	"os"
+	"strings"
+	"syscall"
+)
+
+// Return all the entries at the directory dirPath.
+func readDir(dirPath string) (entries []string, err error) {
+	return readDirN(dirPath, -1)
+}
+
+// readDir applies the filter function on each entries at dirPath, doesn't recurse into
+// the directory itself.
+func readDirFilterFn(dirPath string, filter func(name string, typ os.FileMode) error) error {
+	d, err := os.Open(dirPath)
+	if err != nil {
+		// File is really not found.
+		if os.IsNotExist(err) {
+			return errFileNotFound
+		}
+
+		// File path cannot be verified since one of the parents is a file.
+		if strings.Contains(err.Error(), "not a directory") {
+			return errFileNotFound
+		}
+		return err
+	}
+	defer d.Close()
+
+	st, err := d.Stat()
+	if err != nil {
+		return err
+	}
+	// Not a directory return error.
+	if !st.IsDir() {
+		return errFileAccessDenied
+	}
+
+	data := &syscall.Win32finddata{}
+	for {
+		e := syscall.FindNextFile(syscall.Handle(d.Fd()), data)
+		if e != nil {
+			if e == syscall.ERROR_NO_MORE_FILES {
+				break
+			} else {
+				err = &os.PathError{
+					Op:   "FindNextFile",
+					Path: dirPath,
+					Err:  e,
+				}
+				return err
+			}
+		}
+		name := syscall.UTF16ToString(data.FileName[0:])
+		if name == "" || name == "." || name == ".." { // Useless names
+			continue
+		}
+		if data.FileAttributes&syscall.FILE_ATTRIBUTE_REPARSE_POINT != 0 {
+			continue
+		}
+		var typ os.FileMode = 0 // regular file
+		if data.FileAttributes&syscall.FILE_ATTRIBUTE_DIRECTORY != 0 {
+			typ = os.ModeDir
+		}
+		if err = filter(name, typ); err == errDoneForNow {
+			// filtering requested to return by caller.
+			return nil
+		}
+	}
+
+	return err
+}
+
+// Return N entries at the directory dirPath. If count is -1, return all entries
+func readDirN(dirPath string, count int) (entries []string, err error) {
+	d, err := os.Open(dirPath)
+	if err != nil {
+		// File is really not found.
+		if os.IsNotExist(err) {
+			return nil, errFileNotFound
+		}
+
+		// File path cannot be verified since one of the parents is a file.
+		if strings.Contains(err.Error(), "not a directory") {
+			return nil, errFileNotFound
+		}
+		return nil, err
+	}
+	defer d.Close()
+
+	st, err := d.Stat()
+	if err != nil {
+		return nil, err
+	}
+	// Not a directory return error.
+	if !st.IsDir() {
+		return nil, errFileNotFound
+	}
+
+	data := &syscall.Win32finddata{}
+
+	for count != 0 {
+		err = syscall.FindNextFile(syscall.Handle(d.Fd()), data)
+		if err != nil {
+			if err == syscall.ERROR_NO_MORE_FILES {
+				break
+			} else {
+				return nil, &os.PathError{
+					Op:   "FindNextFile",
+					Path: dirPath,
+					Err:  err,
+				}
+			}
+		}
+
+		name := syscall.UTF16ToString(data.FileName[0:])
+		if name == "" || name == "." || name == ".." { // Useless names
+			continue
+		}
+		switch {
+		case data.FileAttributes&syscall.FILE_ATTRIBUTE_REPARSE_POINT != 0:
+			continue
+		case data.FileAttributes&syscall.FILE_ATTRIBUTE_DIRECTORY != 0:
+			entries = append(entries, name+SlashSeparator)
+		default:
+			entries = append(entries, name)
+		}
+		count--
+	}
+	return entries, nil
+}