mirror of
https://github.com/tailscale/tailscale.git
synced 2024-12-05 07:55:36 +00:00
a5da4ed981
This adds "//go:build" lines and tidies up existing "// +build" lines. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
33 lines
593 B
Go
33 lines
593 B
Go
// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
//go:build !windows
|
|
// +build !windows
|
|
|
|
package filch
|
|
|
|
import (
|
|
"os"
|
|
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
func saveStderr() (*os.File, error) {
|
|
fd, err := unix.Dup(stderrFD)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return os.NewFile(uintptr(fd), "stderr"), nil
|
|
}
|
|
|
|
func unsaveStderr(f *os.File) error {
|
|
err := dup2Stderr(f)
|
|
f.Close()
|
|
return err
|
|
}
|
|
|
|
func dup2Stderr(f *os.File) error {
|
|
return unix.Dup2(int(f.Fd()), stderrFD)
|
|
}
|