Extended attribute support for fuse

src/restic/fuse/dir.go

@@ -161,3 +161,21 @@ func (d *dir) Lookup(ctx context.Context, name string) (fs.Node, error) {
 		return nil, fuse.ENOENT
 	}
 }
+
+func (d *dir) Listxattr(ctx context.Context, req *fuse.ListxattrRequest, resp *fuse.ListxattrResponse) error {
+	debug.Log("Listxattr(%v, %v)", d.node.Name, req.Size)
+	for _, attr := range d.node.ExtendedAttributes {
+		resp.Append(attr.Name)
+	}
+	return nil
+}
+
+func (d *dir) Getxattr(ctx context.Context, req *fuse.GetxattrRequest, resp *fuse.GetxattrResponse) error {
+	debug.Log("Getxattr(%v, %v, %v)", d.node.Name, req.Name, req.Size)
+	attrval := d.node.GetExtendedAttribute(req.Name)
+	if attrval != nil {
+		resp.Xattr = attrval
+		return nil
+	}
+	return fuse.ErrNoXattr
+}

src/restic/fuse/file.go

@@ -161,3 +161,21 @@ func (f *file) Release(ctx context.Context, req *fuse.ReleaseRequest) error {
 	}
 	return nil
 }
+
+func (f *file) Listxattr(ctx context.Context, req *fuse.ListxattrRequest, resp *fuse.ListxattrResponse) error {
+	debug.Log("Listxattr(%v, %v)", f.node.Name, req.Size)
+	for _, attr := range f.node.ExtendedAttributes {
+		resp.Append(attr.Name)
+	}
+	return nil
+}
+
+func (f *file) Getxattr(ctx context.Context, req *fuse.GetxattrRequest, resp *fuse.GetxattrResponse) error {
+	debug.Log("Getxattr(%v, %v, %v)", f.node.Name, req.Name, req.Size)
+	attrval := f.node.GetExtendedAttribute(req.Name)
+	if attrval != nil {
+		resp.Xattr = attrval
+		return nil
+	}
+	return fuse.ErrNoXattr
+}

src/restic/node.go

@@ -103,6 +103,16 @@ func nodeTypeFromFileInfo(fi os.FileInfo) string {
 	return ""
 }
 
+// GetExtendedAttribute gets the extended attribute.
+func (node Node) GetExtendedAttribute(a string) []byte {
+	for _, attr := range node.ExtendedAttributes {
+		if attr.Name == a {
+			return attr.Value
+		}
+	}
+	return nil
+}
+
 // CreateAt creates the node at the given path and restores all the meta data.
 func (node *Node) CreateAt(path string, repo Repository) error {
 	debug.Log("create node %v at %v", node.Name, path)
@@ -557,6 +567,9 @@ func (node *Node) fillExtra(path string, fi os.FileInfo) error {
 	case "symlink":
 		node.LinkTarget, err = fs.Readlink(path)
 		err = errors.Wrap(err, "Readlink")
+		if err != nil {
+			return err
+		}
 	case "dev":
 		node.Device = uint64(stat.rdev())
 	case "chardev":
@@ -566,10 +579,6 @@ func (node *Node) fillExtra(path string, fi os.FileInfo) error {
 	default:
 		return errors.Errorf("invalid node type %q", node.Type)
 	}
-	
-	if err {
-		return err
-	}
 
 	if err = node.fillExtendedAttributes(path); err != nil {
 		return err