// This file is only needed to support build for CentOS 6
// Remove it when no longer needed.
// File is trivial and therefore is in public domain.
#ifndef _GNU_SOURCE
#define_GNU_SOURCE#endif#include<unistd.h>#include<sys/syscall.h>#definesetns(FD,NSTYPE)syscall(__NR_setns,(int)(FD),(int)(NSTYPE))