Use reflection to provide sensible default name.

fuse/fsops.go

@@ -5,6 +5,7 @@ package fuse
 import (
 	"bytes"
 	"log"
+	"reflect"
 	"time"
 
 	"github.com/hanwen/go-fuse/raw"
@@ -16,7 +17,13 @@ func (c *FileSystemConnector) String() string {
 	if c.rootNode == nil || c.rootNode.mount == nil {
 		return "go-fuse:unmounted"
 	}
-	return c.rootNode.mount.fs.String()
+
+	fs := c.rootNode.mount.fs
+	name := fs.String()
+	if name == "DefaultNodeFileSystem" {
+		name = reflect.TypeOf(fs).Name()
+	}
+	return name
 }
 
 func (c *FileSystemConnector) Init(fsInit *RawFsInit) {

fuse/pathfs.go

 package fuse
 
 import (
-	"fmt"
 	"log"
 	"path/filepath"
+	"reflect"
 	"sync"
 )
 
@@ -88,7 +88,11 @@ func (fs *PathNodeFs) OnUnmount() {
 }
 
 func (fs *PathNodeFs) String() string {
-	return fmt.Sprintf("PathNodeFs(%v)", fs.fs)
+	name := fs.fs.String()
+	if name == "DefaultFileSystem" {
+		name = reflect.TypeOf(fs.fs).Name()
+	}
+	return name
 }
 
 func (fs *PathNodeFs) OnMount(conn *FileSystemConnector) {