} else {
		flags |= uintptr(SIGCHLD)
		if runtime.GOARCH == "s390x" {
			// On Linux/s390, the first two arguments of clone(2) are swapped.
			pid, err1 = rawVforkSyscall(SYS_CLONE, 0, flags, uintptr(unsafe.Pointer(&pidfd)))
		} else {
			pid, err1 = rawVforkSyscall(SYS_CLONE, flags, 0, uintptr(unsafe.Pointer(&pidfd)))
		}
	}
	if err1 != 0 || pid != 0 {
		// If we're in the parent, we must return immediately

#define SYS_open		  5
#define SYS_close		  6
#define SYS_getpid		 20
#define SYS_kill		 37
#define SYS_brk			 45
#define SYS_mmap		 90
#define SYS_munmap		 91
#define SYS_setitimer		104
#define SYS_clone		120
#define SYS_sched_yield		158
#define SYS_nanosleep		162
#define SYS_rt_sigreturn	172
#define SYS_rt_sigaction	173
#define SYS_rt_sigprocmask	174
#define SYS_sigaltstack		185
#define SYS_madvise		205