ensure correct file mode

weed/filesys/filehandle.go

@@ -6,6 +6,7 @@ import (
 	"io"
 	"math"
 	"net/http"
+	"os"
 	"time"
 
 	"github.com/chrislusf/seaweedfs/weed/filer2"
@@ -190,7 +191,7 @@ func (fh *FileHandle) Flush(ctx context.Context, req *fuse.FlushRequest) error {
 			fh.f.entry.Attributes.Gid = req.Gid
 			fh.f.entry.Attributes.Mtime = time.Now().Unix()
 			fh.f.entry.Attributes.Crtime = time.Now().Unix()
-			fh.f.entry.Attributes.FileMode = uint32(0666 &^ fh.f.wfs.option.Umask)
+			fh.f.entry.Attributes.FileMode = uint32(os.FileMode(fh.f.entry.Attributes.FileMode) &^ fh.f.wfs.option.Umask)
 			fh.f.entry.Attributes.Collection = fh.dirtyPages.collection
 			fh.f.entry.Attributes.Replication = fh.dirtyPages.replication
 		}