1 /*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <sys/types.h>
18 #include <sys/stat.h>
19 #include <fcntl.h>
20 #include <unistd.h>
21 #include <errno.h>
22
23 #include "device.h"
24 #include "screen_ui.h"
25
26 class Nanohub_Device : public Device
27 {
28 public:
Nanohub_Device(ScreenRecoveryUI * ui)29 Nanohub_Device(ScreenRecoveryUI* ui) : Device(ui) {}
30 bool PostWipeData();
31 };
32
PostWipeData()33 bool Nanohub_Device::PostWipeData()
34 {
35 int fd;
36
37 fd = open("/sys/class/nanohub/nanohub/erase_shared", O_WRONLY);
38 if (fd < 0) {
39 printf("error: open erase_shared failed: %s\n", strerror(errno));
40 } else {
41 if (write(fd, "1\n", 2) != 2) {
42 printf("error: write to erase_shared failed: %s\n", strerror(errno));
43 } else {
44 printf("Successfully erased nanoapps.\n");
45 }
46 close(fd);
47 }
48
49 // open/write failure caused by permissions issues would persist across
50 // reboots, so always return true to prevent a factory reset failure loop.
51 return true;
52 }
53
make_device()54 Device *make_device()
55 {
56 return new Nanohub_Device(new ScreenRecoveryUI);
57 }
58