waitpid(pid, &status,0);if(!WIFEXITED(status) || WEXITSTATUS(status) !=0) {printf("Error (Status %d),fail to resume data\n", WEXITSTATUS(status));ensure_path_unmounted("/data");ensure_path_unmounted("/system");return-1; }printf("copy databk to data succeed\n");ensure_path_unmo...