_, _, err1 = RawSyscall(_SYS_DUP3, uintptr(fd[i]), uintptr(nextfd), O_CLOEXEC)
			} else if runtime.GOOS == "dragonfly" {
				_, _, err1 = RawSyscall(SYS_FCNTL, uintptr(fd[i]), _F_DUP2FD_CLOEXEC, uintptr(nextfd))
			} else {
				_, _, err1 = RawSyscall(SYS_DUP2, uintptr(fd[i]), uintptr(nextfd), 0)
				if err1 != 0 {
					goto childerror
				}
				_, _, err1 = RawSyscall(SYS_FCNTL, uintptr(nextfd), F_SETFD, FD_CLOEXEC)

	if sys.Jail > 0 {
		_, _, err1 = RawSyscall(SYS_JAIL_ATTACH, uintptr(sys.Jail), 0, 0)
		if err1 != 0 {
			goto childerror
		}
	}

	// Enable tracing if requested.
	if sys.Ptrace {
		_, _, err1 = RawSyscall(SYS_PTRACE, uintptr(PTRACE_TRACEME), 0, 0)
		if err1 != 0 {
			goto childerror
		}
	}

	// Session ID
	if sys.Setsid {
		_, _, err1 = RawSyscall(SYS_SETSID, 0, 0, 0)
		if err1 != 0 {

			_, _, err1 = RawSyscall(_SYS_setgroups, ngroups, groups, 0)
			if err1 != 0 {
				goto childerror
			}
		}
		_, _, err1 = RawSyscall(sys_SETGID, uintptr(cred.Gid), 0, 0)
		if err1 != 0 {
			goto childerror
		}
		_, _, err1 = RawSyscall(sys_SETUID, uintptr(cred.Uid), 0, 0)
		if err1 != 0 {
			goto childerror
		}
	}

		}
		if !cred.NoSetGroups {
			_, _, err1 = rawSyscall(abi.FuncPCABI0(libc_setgroups_trampoline), ngroups, groups, 0)
			if err1 != 0 {
				goto childerror
			}
		}
		_, _, err1 = rawSyscall(abi.FuncPCABI0(libc_setgid_trampoline), uintptr(cred.Gid), 0, 0)
		if err1 != 0 {
			goto childerror
		}
		_, _, err1 = rawSyscall(abi.FuncPCABI0(libc_setuid_trampoline), uintptr(cred.Uid), 0, 0)
		if err1 != 0 {

	r0, _, _ := RawSyscall(SYS_GETPGRP, 0, 0, 0)
	pgrp = int(r0)
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Getpid() (pid int) {
	r0, _, _ := RawSyscall(SYS_GETPID, 0, 0, 0)
	pid = int(r0)
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Getppid() (ppid int) {
	r0, _, _ := RawSyscall(SYS_GETPPID, 0, 0, 0)

	r0, _, _ := RawSyscall(SYS_GETPGRP, 0, 0, 0)
	pgrp = int(r0)
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Getpid() (pid int) {
	r0, _, _ := RawSyscall(SYS_GETPID, 0, 0, 0)
	pid = int(r0)
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Getppid() (ppid int) {
	r0, _, _ := RawSyscall(SYS_GETPPID, 0, 0, 0)

	r0, _, _ := RawSyscall(SYS_GETPGRP, 0, 0, 0)
	pgrp = int(r0)
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Getpid() (pid int) {
	r0, _, _ := RawSyscall(SYS_GETPID, 0, 0, 0)
	pid = int(r0)
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Getppid() (ppid int) {
	r0, _, _ := RawSyscall(SYS_GETPPID, 0, 0, 0)

	r0, _, _ := RawSyscall(SYS_GETPGRP, 0, 0, 0)
	pgrp = int(r0)
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Getpid() (pid int) {
	r0, _, _ := RawSyscall(SYS_GETPID, 0, 0, 0)
	pid = int(r0)
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func Getppid() (ppid int) {
	r0, _, _ := RawSyscall(SYS_GETPPID, 0, 0, 0)

	for i = 0; i < len(fd); i++ {
		if fd[i] >= len(fd) {
			RawSyscall(SYS_CLOSE, uintptr(fd[i]), 0, 0)
		}
	}

	// Time to exec.
	r1, _, _ = RawSyscall(SYS_EXEC,
		uintptr(unsafe.Pointer(argv0)),
		uintptr(unsafe.Pointer(&argv[0])), 0)

childerror:
	// send error string on pipe
	RawSyscall(SYS_ERRSTR, uintptr(unsafe.Pointer(&errbuf[0])), uintptr(len(errbuf)), 0)
childerror1:
	errbuf[len(errbuf)-1] = 0
	i = 0

func ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) {
	_, _, e1 := rawSyscall(abi.FuncPCABI0(libc_ioctl_trampoline), uintptr(fd), uintptr(req), uintptr(arg))
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func pipe2(p *[2]_C_int, flags int) (err error) {