86338db0b1
Bug: 251042358 Test: libaidlcommonsupport_test Signed-off-by: Roman Kiryanov <rkir@google.com> Change-Id: I96dc2a39d60f955b8a686adcb7446e1c54747a35
73 lines
2.3 KiB
C++
73 lines
2.3 KiB
C++
/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <aidlcommonsupport/NativeHandle.h>
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#include <fcntl.h>
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namespace android {
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using aidl::android::hardware::common::NativeHandle;
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/**
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* Checks if a NativeHandle is null
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*/
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bool isAidlNativeHandleEmpty(const NativeHandle& handle) {
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return handle.fds.empty() && handle.ints.empty();
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}
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static native_handle_t* fromAidl(const NativeHandle& handle, bool doDup) {
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native_handle_t* to = native_handle_create(handle.fds.size(), handle.ints.size());
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if (!to) return nullptr;
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for (size_t i = 0; i < handle.fds.size(); i++) {
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int fd = handle.fds[i].get();
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to->data[i] = doDup ? fcntl(fd, F_DUPFD_CLOEXEC, 0) : fd;
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}
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memcpy(to->data + handle.fds.size(), handle.ints.data(), handle.ints.size() * sizeof(int));
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return to;
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}
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native_handle_t* makeFromAidl(const NativeHandle& handle) {
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return fromAidl(handle, false /* doDup */);
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}
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native_handle_t* dupFromAidl(const NativeHandle& handle) {
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return fromAidl(handle, true /* doDup */);
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}
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static NativeHandle toAidl(const native_handle_t* handle, bool doDup) {
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NativeHandle to;
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to.fds = std::vector<ndk::ScopedFileDescriptor>(handle->numFds);
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for (size_t i = 0; i < handle->numFds; i++) {
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int fd = handle->data[i];
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to.fds.at(i).set(doDup ? fcntl(fd, F_DUPFD_CLOEXEC, 0) : fd);
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}
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to.ints = std::vector<int32_t>(handle->data + handle->numFds,
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handle->data + handle->numFds + handle->numInts);
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return to;
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}
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NativeHandle makeToAidl(const native_handle_t* handle) {
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return toAidl(handle, false /* doDup */);
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}
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NativeHandle dupToAidl(const native_handle_t* handle) {
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return toAidl(handle, true /* doDup */);
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}
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} // namespace android
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