/
harden_unix.go
52 lines (43 loc) · 1.29 KB
/
harden_unix.go
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
48
49
50
51
52
// Copyright 2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License"). You may not
// use this file except in compliance with the License. A copy of the
// License is located at
//
// http://aws.amazon.com/apache2.0/
//
// or in the "license" file accompanying this file. This file is distributed
// on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
// either express or implied. See the License for the specific language governing
// permissions and limitations under the License.
//go:build darwin || freebsd || linux || netbsd || openbsd
// +build darwin freebsd linux netbsd openbsd
package fileutil
import (
"os"
"syscall"
)
const (
rootUid uint32 = 0
rootGid uint32 = 0
permissionMask os.FileMode = 0777
)
// Harden the provided path with non-inheriting ACL for admin access only.
func Harden(path string) (err error) {
var fi os.FileInfo
if fi, err = os.Stat(path); err != nil {
return
}
if fi.Mode()&permissionMask != RWPermission {
if err = os.Chmod(path, RWPermission); err != nil {
return
}
}
s := fi.Sys().(*syscall.Stat_t)
if s.Uid != rootUid || s.Gid != rootGid {
if err = os.Chown(path, int(rootUid), int(rootGid)); err != nil {
return
}
}
return
}