// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// +build darwin dragonfly freebsd linux netbsd openbsd

package runtime_test

import "syscall"

func fcntl(fd uintptr, cmd int, arg uintptr) (uintptr, syscall.Errno) {
	res, _, err := syscall.Syscall(syscall.SYS_FCNTL, fd, uintptr(cmd), arg)
	return res, err
}