| // 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. | |
| package runtime | |
| func Fcntl(fd, cmd, arg uintptr) (uintptr, uintptr) { | |
| r := fcntl(int32(fd), int32(cmd), int32(arg)) | |
| if r < 0 { | |
| return ^uintptr(0), uintptr(-r) | |
| } | |
| return uintptr(r), 0 | |
| } |