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
|
/*
* Copyright (C) 2019 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.
*/
#pragma once
#include <stddef.h>
#include <stdint.h>
#include <optional>
#include <string>
namespace android {
namespace hardware {
namespace google {
namespace pixel {
enum class MiscWriterActions : int32_t {
kSetDarkThemeFlag = 0,
kClearDarkThemeFlag,
kSetSotaFlag,
kClearSotaFlag,
kUnset = -1,
};
class MiscWriter {
public:
static constexpr uint32_t kThemeFlagOffsetInVendorSpace = 0;
static constexpr char kDarkThemeFlag[] = "theme-dark";
static constexpr uint32_t kSotaFlagOffsetInVendorSpace = 32;
static constexpr char kSotaFlag[] = "enable-sota";
// Returns true of |size| bytes data starting from |offset| is fully inside the vendor space.
static bool OffsetAndSizeInVendorSpace(size_t offset, size_t size);
// Writes the given data to the vendor space in /misc partition, at the given offset. Note that
// offset is in relative to the start of the vendor space.
static bool WriteMiscPartitionVendorSpace(const void* data, size_t size, size_t offset,
std::string* err);
explicit MiscWriter(const MiscWriterActions& action) : action_(action) {}
// Performs the stored MiscWriterActions. If |override_offset| is set, writes to the input offset
// in the vendor space of /misc instead of the default offset.
bool PerformAction(std::optional<size_t> override_offset = std::nullopt);
private:
MiscWriterActions action_{ MiscWriterActions::kUnset };
};
} // namespace pixel
} // namespace google
} // namespace hardware
} // namespace android
|
