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// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "core/hle/service/am/am_results.h"
#include "core/hle/service/am/storage_accessor.h"
#include "core/hle/service/ipc_helpers.h"
namespace Service::AM {
IStorageAccessor::IStorageAccessor(Core::System& system_, IStorage& backing_)
: ServiceFramework{system_, "IStorageAccessor"}, backing{backing_} {
// clang-format off
static const FunctionInfo functions[] = {
{0, &IStorageAccessor::GetSize, "GetSize"},
{10, &IStorageAccessor::Write, "Write"},
{11, &IStorageAccessor::Read, "Read"},
};
// clang-format on
RegisterHandlers(functions);
}
IStorageAccessor::~IStorageAccessor() = default;
void IStorageAccessor::GetSize(HLERequestContext& ctx) {
LOG_DEBUG(Service_AM, "called");
IPC::ResponseBuilder rb{ctx, 4};
rb.Push(ResultSuccess);
rb.Push(static_cast<u64>(backing.GetSize()));
}
void IStorageAccessor::Write(HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
const u64 offset{rp.Pop<u64>()};
const auto data{ctx.ReadBuffer()};
const std::size_t size{std::min<u64>(data.size(), backing.GetSize() - offset)};
LOG_DEBUG(Service_AM, "called, offset={}, size={}", offset, size);
if (offset > backing.GetSize()) {
LOG_ERROR(Service_AM,
"offset is out of bounds, backing_buffer_sz={}, data_size={}, offset={}",
backing.GetSize(), size, offset);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(AM::ResultInvalidOffset);
return;
}
std::memcpy(backing.GetData().data() + offset, data.data(), size);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(ResultSuccess);
}
void IStorageAccessor::Read(HLERequestContext& ctx) {
IPC::RequestParser rp{ctx};
const u64 offset{rp.Pop<u64>()};
const std::size_t size{std::min<u64>(ctx.GetWriteBufferSize(), backing.GetSize() - offset)};
LOG_DEBUG(Service_AM, "called, offset={}, size={}", offset, size);
if (offset > backing.GetSize()) {
LOG_ERROR(Service_AM, "offset is out of bounds, backing_buffer_sz={}, size={}, offset={}",
backing.GetSize(), size, offset);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(AM::ResultInvalidOffset);
return;
}
ctx.WriteBuffer(backing.GetData().data() + offset, size);
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(ResultSuccess);
}
} // namespace Service::AM
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