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ipc_helpers: Make interface domain agnostic and add header validation.
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@ -30,11 +30,6 @@ public:
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RequestHelperBase(Kernel::HLERequestContext& context)
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: context(&context), cmdbuf(context.CommandBuffer()) {}
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void ValidateHeader() {
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// DEBUG_ASSERT_MSG(index == TotalSize(), "Operations do not match the header (cmd 0x%x)",
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// header.raw);
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}
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void Skip(unsigned size_in_words, bool set_to_null) {
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if (set_to_null)
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memset(cmdbuf + index, 0, size_in_words * sizeof(u32));
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@ -63,10 +58,18 @@ class RequestBuilder : public RequestHelperBase {
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public:
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RequestBuilder(u32* command_buffer) : RequestHelperBase(command_buffer) {}
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RequestBuilder(Kernel::HLERequestContext& context, unsigned normal_params_size,
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u32 num_handles_to_copy = 0, u32 num_handles_to_move = 0,
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u32 num_domain_objects = 0)
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: RequestHelperBase(context) {
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u32 normal_params_size;
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u32 num_handles_to_copy;
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u32 num_objects_to_move; ///< Domain objects or move handles, context dependent
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std::ptrdiff_t datapayload_index;
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RequestBuilder(Kernel::HLERequestContext& context, u32 normal_params_size,
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u32 num_handles_to_copy = 0, u32 num_objects_to_move = 0,
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bool always_move_handle = false)
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: RequestHelperBase(context), normal_params_size(normal_params_size),
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num_handles_to_copy(num_handles_to_copy), num_objects_to_move(num_objects_to_move) {
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memset(cmdbuf, 0, sizeof(u32) * IPC::COMMAND_BUFFER_LENGTH);
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context.ClearIncomingObjects();
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@ -76,12 +79,18 @@ public:
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// The entire size of the raw data section in u32 units, including the 16 bytes of mandatory
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// padding.
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u32 raw_data_size = sizeof(IPC::DataPayloadHeader) / 4 + 4 + normal_params_size;
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u32 num_handles_to_move{};
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u32 num_domain_objects{};
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if (!context.Session()->IsDomain() || always_move_handle) {
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num_handles_to_move = num_objects_to_move;
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} else {
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num_domain_objects = num_objects_to_move;
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}
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if (context.Session()->IsDomain()) {
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raw_data_size += sizeof(DomainMessageHeader) / 4 + num_domain_objects;
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} else {
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// If we're not in a domain, turn the domain object parameters into move handles.
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num_handles_to_move += num_domain_objects;
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num_domain_objects = 0;
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}
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header.data_size.Assign(raw_data_size);
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@ -109,11 +118,12 @@ public:
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IPC::DataPayloadHeader data_payload_header{};
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data_payload_header.magic = Common::MakeMagic('S', 'F', 'C', 'O');
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PushRaw(data_payload_header);
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datapayload_index = index;
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}
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template <class T, class... Args>
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void PushIpcInterface(Args&&... args) {
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auto iface = std::make_shared<T>(std::forward<Args>(args)...);
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template <class T>
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void PushIpcInterface(std::shared_ptr<T> iface) {
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if (context->Session()->IsDomain()) {
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context->AddDomainObject(std::move(iface));
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} else {
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@ -125,6 +135,24 @@ public:
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}
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}
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template <class T, class... Args>
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void PushIpcInterface(Args&&... args) {
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PushIpcInterface<T>(std::make_shared<T>(std::forward<Args>(args)...));
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}
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void ValidateHeader() {
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const size_t num_domain_objects = context->NumDomainObjects();
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const size_t num_move_objects = context->NumMoveObjects();
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ASSERT_MSG(!num_domain_objects || !num_move_objects,
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"cannot move normal handles and domain objects");
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ASSERT_MSG((index - datapayload_index) == normal_params_size,
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"normal_params_size value is incorrect");
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ASSERT_MSG((num_domain_objects + num_move_objects) == num_objects_to_move,
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"num_objects_to_move value is incorrect");
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ASSERT_MSG(context->NumCopyObjects() == num_handles_to_copy,
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"num_handles_to_copy value is incorrect");
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}
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// Validate on destruction, as there shouldn't be any case where we don't want it
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~RequestBuilder() {
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ValidateHeader();
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@ -227,14 +255,8 @@ public:
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}
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RequestBuilder MakeBuilder(u32 normal_params_size, u32 num_handles_to_copy,
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u32 num_handles_to_move, u32 num_domain_objects,
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bool validate_header = true) {
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if (validate_header) {
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ValidateHeader();
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}
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return {*context, normal_params_size, num_handles_to_copy, num_handles_to_move,
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num_domain_objects};
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u32 num_handles_to_move, bool validate_header = true) {
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return {*context, normal_params_size, num_handles_to_copy, num_handles_to_move};
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}
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template <typename T>
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@ -175,6 +175,18 @@ public:
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domain_objects.clear();
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}
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size_t NumMoveObjects() const {
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return move_objects.size();
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}
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size_t NumCopyObjects() const {
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return copy_objects.size();
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}
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size_t NumDomainObjects() const {
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return domain_objects.size();
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}
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private:
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std::array<u32, IPC::COMMAND_BUFFER_LENGTH> cmd_buf;
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SharedPtr<Kernel::ServerSession> server_session;
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@ -196,7 +208,6 @@ private:
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unsigned data_payload_offset{};
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unsigned buffer_c_offset{};
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u32_le command{};
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bool is_domain{};
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};
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} // namespace Kernel
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