1 // Copyright 2017 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 || netbsd || openbsd 6 // +build dragonfly freebsd netbsd openbsd 7 8 package os 9 10 import "syscall" 11 12 // Pipe returns a connected pair of Files; reads from r return bytes written to w. 13 // It returns the files and an error, if any. 14 func Pipe() (r *File, w *File, err error) { 15 var p [2]int 16 17 e := syscall.Pipe2(p[0:], syscall.O_CLOEXEC) 18 if e != nil { 19 return nil, nil, NewSyscallError("pipe", e) 20 } 21 22 return newFile(uintptr(p[0]), "|0", kindPipe), newFile(uintptr(p[1]), "|1", kindPipe), nil 23 } 24