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os: use syscall.Pipe2 on Linux

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Update #2656

R=golang-dev, iant, minux.ma, bradfitz
CC=golang-dev
https://golang.org/cl/7065063
This commit is contained in:
Georg Reinke 2013-01-11 08:30:25 -08:00 • committed by Ian Lance Taylor
parent b73a1a8e32
commit 98259b9211
3 changed files with 61 additions and 19 deletions
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19
src/pkg/os/file_unix.go
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@ -274,25 +274,6 @@ func basename(name string) string {
return name
}
// 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"), NewFile(uintptr(p[1]), "|1"), nil
}
// TempDir returns the default directory to use for temporary files.
func TempDir() string {
dir := Getenv("TMPDIR")