1 // Copyright 2009 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 // +build darwin dragonfly freebsd nacl netbsd openbsd solaris 6 7 package os 8 9 import "syscall" 10 11 // Pipe returns a connected pair of Files; reads from r return bytes written to w. 12 // It returns the files and an error, if any. 13 func Pipe() (r *File, w *File, err error) { 14 var p [2]int 15 16 // See ../syscall/exec.go for description of lock. 17 syscall.ForkLock.RLock() 18 e := syscall.Pipe(p[0:]) 19 if e != nil { 20 syscall.ForkLock.RUnlock() 21 return nil, nil, NewSyscallError("pipe", e) 22 } 23 syscall.CloseOnExec(p[0]) 24 syscall.CloseOnExec(p[1]) 25 syscall.ForkLock.RUnlock() 26 27 return NewFile(uintptr(p[0]), "|0"), NewFile(uintptr(p[1]), "|1"), nil 28 } 29
