blob: 3f75dca91a0aba32e4b35c22902186e941f14d24 (
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
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
/*
* Copyright (C) 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License 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.
*/
#include <string>
#include <android-base/file.h>
#include <android-base/logging.h>
#include <android-base/properties.h>
#include <fsverity_init.h>
#include <log/log.h>
#include <mini_keyctl_utils.h>
int main(int argc, const char** argv) {
if (argc < 2) {
LOG(ERROR) << "Not enough arguments";
return -1;
}
key_serial_t keyring_id = android::GetKeyringId(".fs-verity");
if (keyring_id < 0) {
LOG(ERROR) << "Failed to find .fs-verity keyring id";
return -1;
}
const std::string_view command = argv[1];
if (command == "--load-verified-keys") {
LoadKeyFromVerifiedPartitions(keyring_id);
} else if (command == "--load-extra-key") {
if (argc != 3) {
LOG(ERROR) << "--load-extra-key requires <key_name> argument.";
return -1;
}
if (!LoadKeyFromStdin(keyring_id, argv[2])) {
return -1;
}
} else if (command == "--lock") {
// Requires files backed by fs-verity to be verified with a key in .fs-verity
// keyring.
if (!android::base::WriteStringToFile("1", "/proc/sys/fs/verity/require_signatures")) {
PLOG(ERROR) << "Failed to enforce fs-verity signature";
}
if (!android::base::GetBoolProperty("ro.debuggable", false)) {
if (keyctl_restrict_keyring(keyring_id, nullptr, nullptr) < 0) {
PLOG(ERROR) << "Cannot restrict .fs-verity keyring";
}
}
} else {
LOG(ERROR) << "Unknown argument(s).";
return -1;
}
return 0;
}
|
