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@ -3,6 +3,14 @@
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// Refer to the license.txt file included.
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#include <cinttypes>
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#include <cstring>
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#include <iterator>
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#include <string>
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#include <utility>
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#include <vector>
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#include "common/assert.h"
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#include "common/common_types.h"
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#include "common/logging/log.h"
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#include "common/string_util.h"
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#include "core/core.h"
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@ -26,7 +34,7 @@ enum class StorageId : u8 {
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class IStorage final : public ServiceFramework<IStorage> {
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public:
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IStorage(FileSys::VirtualFile backend_)
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explicit IStorage(FileSys::VirtualFile backend_)
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: ServiceFramework("IStorage"), backend(std::move(backend_)) {
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static const FunctionInfo functions[] = {
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{0, &IStorage::Read, "Read"}, {1, nullptr, "Write"}, {2, nullptr, "Flush"},
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@ -133,19 +141,19 @@ private:
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return;
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}
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std::vector<u8> data = ctx.ReadBuffer();
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std::vector<u8> actual_data(length);
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const std::vector<u8> data = ctx.ReadBuffer();
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ASSERT_MSG(
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data.size() <= length,
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static_cast<s64>(data.size()) <= length,
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"Attempting to write more data than requested (requested={:016X}, actual={:016X}).",
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length, data.size());
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std::copy(data.begin(), data.end(), actual_data.begin());
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// Write the data to the Storage backend
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auto written = backend->WriteBytes(data, offset);
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const auto write_size =
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static_cast<std::size_t>(std::distance(data.begin(), data.begin() + length));
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const std::size_t written = backend->Write(data.data(), write_size, offset);
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ASSERT_MSG(written == length,
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ASSERT_MSG(static_cast<s64>(written) == length,
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"Could not write all bytes to file (requested={:016X}, actual={:016X}).", length,
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written);
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@ -223,23 +231,20 @@ private:
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LOG_DEBUG(Service_FS, "called, unk=0x{:X}", unk);
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// Calculate how many entries we can fit in the output buffer
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u64 count_entries = ctx.GetWriteBufferSize() / sizeof(FileSys::Entry);
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const u64 count_entries = ctx.GetWriteBufferSize() / sizeof(FileSys::Entry);
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// Cap at total number of entries.
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u64 actual_entries = std::min(count_entries, entries.size() - next_entry_index);
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const u64 actual_entries = std::min(count_entries, entries.size() - next_entry_index);
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// Read the data from the Directory backend
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std::vector<FileSys::Entry> entry_data(entries.begin() + next_entry_index,
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entries.begin() + next_entry_index + actual_entries);
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// Determine data start and end
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const auto* begin = reinterpret_cast<u8*>(entries.data() + next_entry_index);
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const auto* end = reinterpret_cast<u8*>(entries.data() + next_entry_index + actual_entries);
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const auto range_size = static_cast<std::size_t>(std::distance(begin, end));
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next_entry_index += actual_entries;
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// Convert the data into a byte array
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std::vector<u8> output(entry_data.size() * sizeof(FileSys::Entry));
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std::memcpy(output.data(), entry_data.data(), output.size());
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// Write the data to memory
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ctx.WriteBuffer(output);
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ctx.WriteBuffer(begin, range_size);
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IPC::ResponseBuilder rb{ctx, 4};
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rb.Push(RESULT_SUCCESS);
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