diff options
Diffstat (limited to 'src/core/hle/service/filesystem/fsp/fs_i_file.cpp')
-rw-r--r-- | src/core/hle/service/filesystem/fsp/fs_i_file.cpp | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/src/core/hle/service/filesystem/fsp/fs_i_file.cpp b/src/core/hle/service/filesystem/fsp/fs_i_file.cpp new file mode 100644 index 000000000..9a18f6ec5 --- /dev/null +++ b/src/core/hle/service/filesystem/fsp/fs_i_file.cpp @@ -0,0 +1,127 @@ +// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project +// SPDX-License-Identifier: GPL-2.0-or-later + +#include "core/file_sys/errors.h" +#include "core/hle/service/filesystem/fsp/fs_i_file.h" +#include "core/hle/service/ipc_helpers.h" + +namespace Service::FileSystem { + +IFile::IFile(Core::System& system_, FileSys::VirtualFile backend_) + : ServiceFramework{system_, "IFile"}, backend(std::move(backend_)) { + static const FunctionInfo functions[] = { + {0, &IFile::Read, "Read"}, + {1, &IFile::Write, "Write"}, + {2, &IFile::Flush, "Flush"}, + {3, &IFile::SetSize, "SetSize"}, + {4, &IFile::GetSize, "GetSize"}, + {5, nullptr, "OperateRange"}, + {6, nullptr, "OperateRangeWithBuffer"}, + }; + RegisterHandlers(functions); +} + +void IFile::Read(HLERequestContext& ctx) { + IPC::RequestParser rp{ctx}; + const u64 option = rp.Pop<u64>(); + const s64 offset = rp.Pop<s64>(); + const s64 length = rp.Pop<s64>(); + + LOG_DEBUG(Service_FS, "called, option={}, offset=0x{:X}, length={}", option, offset, length); + + // Error checking + if (length < 0) { + LOG_ERROR(Service_FS, "Length is less than 0, length={}", length); + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(FileSys::ResultInvalidSize); + return; + } + if (offset < 0) { + LOG_ERROR(Service_FS, "Offset is less than 0, offset={}", offset); + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(FileSys::ResultInvalidOffset); + return; + } + + // Read the data from the Storage backend + std::vector<u8> output = backend->ReadBytes(length, offset); + + // Write the data to memory + ctx.WriteBuffer(output); + + IPC::ResponseBuilder rb{ctx, 4}; + rb.Push(ResultSuccess); + rb.Push(static_cast<u64>(output.size())); +} + +void IFile::Write(HLERequestContext& ctx) { + IPC::RequestParser rp{ctx}; + const u64 option = rp.Pop<u64>(); + const s64 offset = rp.Pop<s64>(); + const s64 length = rp.Pop<s64>(); + + LOG_DEBUG(Service_FS, "called, option={}, offset=0x{:X}, length={}", option, offset, length); + + // Error checking + if (length < 0) { + LOG_ERROR(Service_FS, "Length is less than 0, length={}", length); + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(FileSys::ResultInvalidSize); + return; + } + if (offset < 0) { + LOG_ERROR(Service_FS, "Offset is less than 0, offset={}", offset); + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(FileSys::ResultInvalidOffset); + return; + } + + const auto data = ctx.ReadBuffer(); + + ASSERT_MSG(static_cast<s64>(data.size()) <= length, + "Attempting to write more data than requested (requested={:016X}, actual={:016X}).", + length, data.size()); + + // Write the data to the Storage backend + const auto write_size = + static_cast<std::size_t>(std::distance(data.begin(), data.begin() + length)); + const std::size_t written = backend->Write(data.data(), write_size, offset); + + ASSERT_MSG(static_cast<s64>(written) == length, + "Could not write all bytes to file (requested={:016X}, actual={:016X}).", length, + written); + + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ResultSuccess); +} + +void IFile::Flush(HLERequestContext& ctx) { + LOG_DEBUG(Service_FS, "called"); + + // Exists for SDK compatibiltity -- No need to flush file. + + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ResultSuccess); +} + +void IFile::SetSize(HLERequestContext& ctx) { + IPC::RequestParser rp{ctx}; + const u64 size = rp.Pop<u64>(); + LOG_DEBUG(Service_FS, "called, size={}", size); + + backend->Resize(size); + + IPC::ResponseBuilder rb{ctx, 2}; + rb.Push(ResultSuccess); +} + +void IFile::GetSize(HLERequestContext& ctx) { + const u64 size = backend->GetSize(); + LOG_DEBUG(Service_FS, "called, size={}", size); + + IPC::ResponseBuilder rb{ctx, 4}; + rb.Push(ResultSuccess); + rb.Push<u64>(size); +} + +} // namespace Service::FileSystem |