rename all remaining packages to internal/ (#12418)

This is to ensure that there are no projects
that try to import `minio/minio/pkg` into
their own repo. Any such common packages should
go to `https://github.com/minio/pkg`

internal/disk/root_disk.go

@@ -0,0 +1,29 @@
+// Copyright (c) 2015-2021 MinIO, Inc.
+//
+// This file is part of MinIO Object Storage stack
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package disk
+
+import "runtime"
+
+// IsRootDisk returns if diskPath belongs to root-disk, i.e the disk mounted at "/"
+func IsRootDisk(diskPath string, rootDisk string) (bool, error) {
+	if runtime.GOOS == "windows" {
+		// On windows this function is not implemented.
+		return false, nil
+	}
+	return SameDisk(diskPath, rootDisk)
+}