summaryrefslogtreecommitdiff
path: root/libgo/go/runtime/nbpipe_pipe2.go
blob: 76fb40c460a67b5653daa1b2c971e9c93da8670e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
// 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.

// +build freebsd hurd linux netbsd openbsd solaris

package runtime

func nonblockingPipe() (r, w int32, errno int32) {
	r, w, errno = pipe2(_O_NONBLOCK | _O_CLOEXEC)
	if errno == -_ENOSYS {
		r, w, errno = pipe()
		if errno != 0 {
			return -1, -1, errno
		}
		closeonexec(r)
		setNonblock(r)
		closeonexec(w)
		setNonblock(w)
	}
	return r, w, errno
}