| // Copyright 2009 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 nacl solaris |
| |
| package os |
| |
| import "syscall" |
| |
| // Pipe returns a connected pair of Files; reads from r return bytes written to w. |
| // It returns the files and an error, if any. |
| func Pipe() (r *File, w *File, err error) { |
| var p [2]int |
| |
| // See ../syscall/exec.go for description of lock. |
| syscall.ForkLock.RLock() |
| e := syscall.Pipe(p[0:]) |
| if e != nil { |
| syscall.ForkLock.RUnlock() |
| return nil, nil, NewSyscallError("pipe", e) |
| } |
| syscall.CloseOnExec(p[0]) |
| syscall.CloseOnExec(p[1]) |
| syscall.ForkLock.RUnlock() |
| |
| return newFile(uintptr(p[0]), "|0", kindPipe), newFile(uintptr(p[1]), "|1", kindPipe), nil |
| } |