blob: 4802b139518e3e24bc7a428168707028540daea6 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
// Copyright 2016 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.
package testenv
import (
"os"
"path/filepath"
"sync"
"syscall"
)
var symlinkOnce sync.Once
var winSymlinkErr error
func initWinHasSymlink() {
tmpdir, err := os.MkdirTemp("", "symtest")
if err != nil {
panic("failed to create temp directory: " + err.Error())
}
defer os.RemoveAll(tmpdir)
err = os.Symlink("target", filepath.Join(tmpdir, "symlink"))
if err != nil {
err = err.(*os.LinkError).Err
switch err {
case syscall.EWINDOWS, syscall.ERROR_PRIVILEGE_NOT_HELD:
winSymlinkErr = err
}
}
}
func hasSymlink() (ok bool, reason string) {
symlinkOnce.Do(initWinHasSymlink)
switch winSymlinkErr {
case nil:
return true, ""
case syscall.EWINDOWS:
return false, ": symlinks are not supported on your version of Windows"
case syscall.ERROR_PRIVILEGE_NOT_HELD:
return false, ": you don't have enough privileges to create symlinks"
}
return false, ""
}
|
