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
69
70
71
72
73
|
/*
* Copyright (C) 2020 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 <aidlcommonsupport/NativeHandle.h>
#include <fcntl.h>
namespace android {
using aidl::android::hardware::common::NativeHandle;
/**
* Checks if a NativeHandle is null
*/
bool isAidlNativeHandleEmpty(const NativeHandle& handle) {
return handle.fds.empty() && handle.ints.empty();
}
static native_handle_t* fromAidl(const NativeHandle& handle, bool doDup) {
native_handle_t* to = native_handle_create(handle.fds.size(), handle.ints.size());
if (!to) return nullptr;
for (size_t i = 0; i < handle.fds.size(); i++) {
int fd = handle.fds[i].get();
to->data[i] = doDup ? fcntl(fd, F_DUPFD_CLOEXEC, 0) : fd;
}
memcpy(to->data + handle.fds.size(), handle.ints.data(), handle.ints.size() * sizeof(int));
return to;
}
native_handle_t* makeFromAidl(const NativeHandle& handle) {
return fromAidl(handle, false /* doDup */);
}
native_handle_t* dupFromAidl(const NativeHandle& handle) {
return fromAidl(handle, true /* doDup */);
}
static NativeHandle toAidl(const native_handle_t* handle, bool doDup) {
NativeHandle to;
to.fds = std::vector<ndk::ScopedFileDescriptor>(handle->numFds);
for (size_t i = 0; i < handle->numFds; i++) {
int fd = handle->data[i];
to.fds.at(i).set(doDup ? fcntl(fd, F_DUPFD_CLOEXEC, 0) : fd);
}
to.ints = std::vector<int32_t>(handle->data + handle->numFds,
handle->data + handle->numFds + handle->numInts);
return to;
}
NativeHandle makeToAidl(const native_handle_t* handle) {
return toAidl(handle, false /* doDup */);
}
NativeHandle dupToAidl(const native_handle_t* handle) {
return toAidl(handle, true /* doDup */);
}
} // namespace android
|
