1 // Copyright 2019 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 //go:build dragonfly || freebsd || linux || netbsd || openbsd 6 // +build dragonfly freebsd linux netbsd openbsd 7 8 package runtime_test 9 10 import ( 11 "internal/syscall/unix" 12 "syscall" 13 ) 14 15 func fcntl(fd uintptr, cmd int, arg uintptr) (uintptr, syscall.Errno) { 16 res, _, err := syscall.Syscall(unix.FcntlSyscall, fd, uintptr(cmd), arg) 17 return res, err 18 } 19