From ceca078acb8607f5d3252356617cf630ff6b4be8 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Thu, 29 Nov 2018 00:00:56 -0800
Subject: [PATCH] avoid overwriting file or directory

fix https://github.com/chrislusf/seaweedfs/issues/777
---
 weed/filer2/filer.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/weed/filer2/filer.go b/weed/filer2/filer.go
index 659054d86..0dde08d04 100644
--- a/weed/filer2/filer.go
+++ b/weed/filer2/filer.go
@@ -132,6 +132,12 @@ func (f *Filer) CreateEntry(entry *Entry) error {
 			return fmt.Errorf("insert entry %s: %v", entry.FullPath, err)
 		}
 	} else {
+		if oldEntry.IsDirectory() && !entry.IsDirectory() {
+			return fmt.Errorf("existing %s is a directory", entry.FullPath)
+		}
+		if !oldEntry.IsDirectory() && entry.IsDirectory() {
+			return fmt.Errorf("existing %s is a file", entry.FullPath)
+		}
 		if err := f.store.UpdateEntry(entry); err != nil {
 			return fmt.Errorf("update entry %s: %v", entry.FullPath, err)
 		}