object: move go-routine listing from posix to objectLayer. (#1491)

posix-list-dir-others.go

@@ -0,0 +1,68 @@
+// +build !linux,!darwin,!openbsd,!freebsd,!netbsd,!dragonfly
+
+/*
+ * Minio Cloud Storage, (C) 2016 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 main
+
+import (
+	"io"
+	"os"
+	"strings"
+
+	"github.com/Sirupsen/logrus"
+)
+
+// Return all the entries at the directory dirPath.
+func readDir(dirPath string) (entries []string, err error) {
+	d, err := os.Open(dirPath)
+	if err != nil {
+		log.WithFields(logrus.Fields{
+			"dirPath": dirPath,
+		}).Debugf("Open failed with %s", err)
+
+		// 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()
+
+	for {
+		fis, err := d.Readdir(1000)
+		if err != nil {
+			if err == io.EOF {
+				break
+			}
+			return nil, err
+		}
+		for _, fi := range fis {
+			if fi.Mode().IsDir() {
+				// append "/" instead of "\" so that sorting is done as expected.
+				entries = append(entries, fi.Name()+slashSeparator)
+			} else if fi.Mode().IsRegular() {
+				entries = append(entries, fi.Name())
+			}
+		}
+	}
+	return
+}