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Merge pull request #10236 from liamwhite/thats-not-an-ibinder
nvnflinger: fix Parcel serialization
This commit is contained in:
commit
1805de0301
@ -793,6 +793,7 @@ Status BufferQueueProducer::SetPreallocatedBuffer(s32 slot,
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std::scoped_lock lock{core->mutex};
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std::scoped_lock lock{core->mutex};
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slots[slot] = {};
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slots[slot] = {};
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slots[slot].fence = Fence::NoFence();
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slots[slot].graphic_buffer = buffer;
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slots[slot].graphic_buffer = buffer;
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slots[slot].frame_number = 0;
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slots[slot].frame_number = 0;
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@ -854,7 +855,7 @@ void BufferQueueProducer::Transact(HLERequestContext& ctx, TransactionId code, u
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status = DequeueBuffer(&slot, &fence, is_async, width, height, pixel_format, usage);
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status = DequeueBuffer(&slot, &fence, is_async, width, height, pixel_format, usage);
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parcel_out.Write(slot);
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parcel_out.Write(slot);
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parcel_out.WriteObject(&fence);
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parcel_out.WriteFlattenedObject(&fence);
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break;
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break;
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}
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}
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case TransactionId::RequestBuffer: {
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case TransactionId::RequestBuffer: {
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@ -864,7 +865,7 @@ void BufferQueueProducer::Transact(HLERequestContext& ctx, TransactionId code, u
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status = RequestBuffer(slot, &buf);
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status = RequestBuffer(slot, &buf);
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parcel_out.WriteObject(buf);
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parcel_out.WriteFlattenedObject(buf);
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break;
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break;
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}
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}
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case TransactionId::QueueBuffer: {
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case TransactionId::QueueBuffer: {
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@ -117,61 +117,67 @@ private:
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class OutputParcel final {
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class OutputParcel final {
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public:
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public:
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static constexpr std::size_t DefaultBufferSize = 0x40;
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OutputParcel() = default;
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OutputParcel() : buffer(DefaultBufferSize) {}
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template <typename T>
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explicit OutputParcel(const T& out_data) : buffer(DefaultBufferSize) {
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Write(out_data);
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}
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template <typename T>
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template <typename T>
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void Write(const T& val) {
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void Write(const T& val) {
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static_assert(std::is_trivially_copyable_v<T>, "T must be trivially copyable.");
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this->WriteImpl(val, m_data_buffer);
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if (buffer.size() < write_index + sizeof(T)) {
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buffer.resize(buffer.size() + sizeof(T) + DefaultBufferSize);
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}
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std::memcpy(buffer.data() + write_index, &val, sizeof(T));
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write_index += sizeof(T);
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write_index = Common::AlignUp(write_index, 4);
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}
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}
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template <typename T>
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template <typename T>
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void WriteObject(const T* ptr) {
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void WriteFlattenedObject(const T* ptr) {
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static_assert(std::is_trivially_copyable_v<T>, "T must be trivially copyable.");
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if (!ptr) {
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if (!ptr) {
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Write<u32>(0);
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this->Write<u32>(0);
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return;
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return;
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}
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}
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Write<u32>(1);
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this->Write<u32>(1);
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Write<s64>(sizeof(T));
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this->Write<s64>(sizeof(T));
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Write(*ptr);
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this->Write(*ptr);
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}
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}
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template <typename T>
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template <typename T>
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void WriteObject(const std::shared_ptr<T> ptr) {
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void WriteFlattenedObject(const std::shared_ptr<T> ptr) {
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WriteObject(ptr.get());
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this->WriteFlattenedObject(ptr.get());
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}
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template <typename T>
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void WriteInterface(const T& val) {
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this->WriteImpl(val, m_data_buffer);
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this->WriteImpl(0U, m_object_buffer);
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}
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}
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std::vector<u8> Serialize() const {
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std::vector<u8> Serialize() const {
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ParcelHeader header{};
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std::vector<u8> output_buffer(sizeof(ParcelHeader) + m_data_buffer.size() +
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header.data_size = static_cast<u32>(write_index - sizeof(ParcelHeader));
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m_object_buffer.size());
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header.data_offset = sizeof(ParcelHeader);
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header.objects_size = 4;
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header.objects_offset = static_cast<u32>(sizeof(ParcelHeader) + header.data_size);
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std::memcpy(buffer.data(), &header, sizeof(ParcelHeader));
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return buffer;
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ParcelHeader header{};
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header.data_size = static_cast<u32>(m_data_buffer.size());
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header.data_offset = sizeof(ParcelHeader);
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header.objects_size = static_cast<u32>(m_object_buffer.size());
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header.objects_offset = header.data_offset + header.data_size;
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std::memcpy(output_buffer.data(), &header, sizeof(header));
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std::ranges::copy(m_data_buffer, output_buffer.data() + header.data_offset);
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std::ranges::copy(m_object_buffer, output_buffer.data() + header.objects_offset);
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return output_buffer;
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}
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}
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private:
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private:
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mutable std::vector<u8> buffer;
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template <typename T>
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std::size_t write_index = sizeof(ParcelHeader);
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requires(std::is_trivially_copyable_v<T>)
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void WriteImpl(const T& val, std::vector<u8>& buffer) {
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const size_t aligned_size = Common::AlignUp(sizeof(T), 4);
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const size_t old_size = buffer.size();
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buffer.resize(old_size + aligned_size);
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std::memcpy(buffer.data() + old_size, &val, sizeof(T));
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}
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private:
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std::vector<u8> m_data_buffer;
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std::vector<u8> m_object_buffer;
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};
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};
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} // namespace Service::android
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} // namespace Service::android
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@ -64,8 +64,8 @@ public:
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private:
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private:
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const u32 magic = 2;
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const u32 magic = 2;
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const u32 process_id = 1;
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const u32 process_id = 1;
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const u32 id;
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const u64 id;
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INSERT_PADDING_WORDS(3);
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INSERT_PADDING_WORDS(2);
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std::array<u8, 8> dispdrv = {'d', 'i', 's', 'p', 'd', 'r', 'v', '\0'};
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std::array<u8, 8> dispdrv = {'d', 'i', 's', 'p', 'd', 'r', 'v', '\0'};
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INSERT_PADDING_WORDS(2);
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INSERT_PADDING_WORDS(2);
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};
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};
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@ -608,7 +608,9 @@ private:
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return;
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return;
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}
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}
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const auto parcel = android::OutputParcel{NativeWindow{*buffer_queue_id}};
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android::OutputParcel parcel;
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parcel.WriteInterface(NativeWindow{*buffer_queue_id});
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const auto buffer_size = ctx.WriteBuffer(parcel.Serialize());
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const auto buffer_size = ctx.WriteBuffer(parcel.Serialize());
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IPC::ResponseBuilder rb{ctx, 4};
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IPC::ResponseBuilder rb{ctx, 4};
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@ -654,7 +656,9 @@ private:
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return;
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return;
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}
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}
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const auto parcel = android::OutputParcel{NativeWindow{*buffer_queue_id}};
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android::OutputParcel parcel;
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parcel.WriteInterface(NativeWindow{*buffer_queue_id});
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const auto buffer_size = ctx.WriteBuffer(parcel.Serialize());
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const auto buffer_size = ctx.WriteBuffer(parcel.Serialize());
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IPC::ResponseBuilder rb{ctx, 6};
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IPC::ResponseBuilder rb{ctx, 6};
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