-
Notifications
You must be signed in to change notification settings - Fork 1
/
main.go
64 lines (52 loc) · 1.47 KB
/
main.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
53
54
55
56
57
58
59
60
61
62
63
64
// Copyright 2020 Google LLC
//
// 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
//
// https://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.
package main
import (
"bufio"
"fmt"
"os"
"syscall"
"unsafe"
"golang.org/x/sys/unix"
)
const (
SET_C_BIT = 1
CLEAR_C_BIT = 0
)
var ()
func main() {
fd, err := unix.Open("/dev/sevtest", syscall.O_RDONLY, 0)
if err != nil {
panic(err)
}
defer unix.Close(fd)
reader := bufio.NewReader(os.Stdin)
fmt.Print("Enter text: ")
secret, _ := reader.ReadString('\n')
i := fmt.Sprintf("%s", secret)
fmt.Println("c-bit set to default(1): ", &i, " Value : ", i)
loc := int(uintptr(unsafe.Pointer(syscall.StringBytePtr(i))))
fmt.Println("------------------------------")
err = unix.IoctlSetInt(fd, CLEAR_C_BIT, loc)
if err != nil {
panic(err)
}
fmt.Println("c-bit set to 0; Address: ", &i, " Value : ", i)
fmt.Println("------------------------------")
err = unix.IoctlSetInt(fd, SET_C_BIT, loc)
if err != nil {
panic(err)
}
fmt.Println("c-bit set to 1; Address: ", &i, " Value : ", i)
}