func (fs *MyFileSystem) Getattr(ctx context.Context, req *fuse.GetattrRequest, resp *fuse.GetattrResponse) error { // get file info from some backend fileInfo := getFileFromBackend(req.Name) // set size attribute of response resp.Attr.Size = fileInfo.SizeInBytes return nil }
func (fs *MyFileSystem) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) error { // get file info from some backend fileInfo := getFileFromBackend(req.Name) // update size attribute in backend fileInfo.SizeInBytes = req.Size return nil }In this example, we implement the Setattr method, which is called when the attributes of a file are set. We update the file's size in some backend storage system to match the new value. In conclusion, the bazil.org.fuse package is a useful library for implementing FUSE filesystems in Go. The Attr Size struct is an important component of this package and allows developers to read and write the size attribute of files and directories.