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https://github.com/citra-emu/citra.git
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fs/archive: move file and directory classes to their own files
This commit is contained in:
Weiyi Wang
parent
b163502744
commit
7678327bf2
@ -247,6 +247,10 @@ add_library(core STATIC
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hle/service/frd/frd_u.h
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hle/service/fs/archive.cpp
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hle/service/fs/archive.h
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hle/service/fs/directory.cpp
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hle/service/fs/directory.h
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hle/service/fs/file.cpp
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hle/service/fs/file.h
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hle/service/fs/fs_user.cpp
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hle/service/fs/fs_user.h
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hle/service/gsp/gsp.cpp
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@ -27,339 +27,11 @@
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#include "core/file_sys/directory_backend.h"
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#include "core/file_sys/errors.h"
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#include "core/file_sys/file_backend.h"
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#include "core/hle/ipc.h"
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#include "core/hle/ipc_helpers.h"
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#include "core/hle/kernel/client_port.h"
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#include "core/hle/kernel/client_session.h"
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#include "core/hle/kernel/event.h"
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#include "core/hle/kernel/handle_table.h"
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#include "core/hle/kernel/server_session.h"
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#include "core/hle/result.h"
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#include "core/hle/service/fs/archive.h"
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#include "core/hle/service/fs/fs_user.h"
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#include "core/hle/service/service.h"
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#include "core/memory.h"
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namespace Service::FS {
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// Command to access directory
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enum class DirectoryCommand : u32 {
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Dummy1 = 0x000100C6,
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Control = 0x040100C4,
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Read = 0x08010042,
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Close = 0x08020000,
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};
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File::File(std::unique_ptr<FileSys::FileBackend>&& backend, const FileSys::Path& path)
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: ServiceFramework("", 1), path(path), backend(std::move(backend)) {
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static const FunctionInfo functions[] = {
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{0x08010100, &File::OpenSubFile, "OpenSubFile"},
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{0x080200C2, &File::Read, "Read"},
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{0x08030102, &File::Write, "Write"},
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{0x08040000, &File::GetSize, "GetSize"},
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{0x08050080, &File::SetSize, "SetSize"},
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{0x08080000, &File::Close, "Close"},
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{0x08090000, &File::Flush, "Flush"},
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{0x080A0040, &File::SetPriority, "SetPriority"},
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{0x080B0000, &File::GetPriority, "GetPriority"},
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{0x080C0000, &File::OpenLinkFile, "OpenLinkFile"},
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};
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RegisterHandlers(functions);
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}
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void File::Read(Kernel::HLERequestContext& ctx) {
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IPC::RequestParser rp(ctx, 0x0802, 3, 2);
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u64 offset = rp.Pop<u64>();
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u32 length = rp.Pop<u32>();
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auto& buffer = rp.PopMappedBuffer();
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LOG_TRACE(Service_FS, "Read {}: offset=0x{:x} length=0x{:08X}", GetName(), offset, length);
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const FileSessionSlot* file = GetSessionData(ctx.Session());
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if (file->subfile && length > file->size) {
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LOG_WARNING(Service_FS, "Trying to read beyond the subfile size, truncating");
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length = static_cast<u32>(file->size);
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}
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// This file session might have a specific offset from where to start reading, apply it.
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offset += file->offset;
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if (offset + length > backend->GetSize()) {
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LOG_ERROR(Service_FS,
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"Reading from out of bounds offset=0x{:x} length=0x{:08X} file_size=0x{:x}",
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offset, length, backend->GetSize());
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}
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IPC::RequestBuilder rb = rp.MakeBuilder(2, 2);
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std::vector<u8> data(length);
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ResultVal<std::size_t> read = backend->Read(offset, data.size(), data.data());
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if (read.Failed()) {
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rb.Push(read.Code());
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rb.Push<u32>(0);
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} else {
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buffer.Write(data.data(), 0, *read);
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rb.Push(RESULT_SUCCESS);
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rb.Push<u32>(static_cast<u32>(*read));
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}
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rb.PushMappedBuffer(buffer);
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std::chrono::nanoseconds read_timeout_ns{backend->GetReadDelayNs(length)};
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ctx.SleepClientThread(Kernel::GetCurrentThread(), "file::read", read_timeout_ns,
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[](Kernel::SharedPtr<Kernel::Thread> thread,
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Kernel::HLERequestContext& ctx, Kernel::ThreadWakeupReason reason) {
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// Nothing to do here
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});
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}
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void File::Write(Kernel::HLERequestContext& ctx) {
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IPC::RequestParser rp(ctx, 0x0803, 4, 2);
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u64 offset = rp.Pop<u64>();
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u32 length = rp.Pop<u32>();
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u32 flush = rp.Pop<u32>();
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auto& buffer = rp.PopMappedBuffer();
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LOG_TRACE(Service_FS, "Write {}: offset=0x{:x} length={}, flush=0x{:x}", GetName(), offset,
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length, flush);
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IPC::RequestBuilder rb = rp.MakeBuilder(2, 2);
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const FileSessionSlot* file = GetSessionData(ctx.Session());
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// Subfiles can not be written to
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if (file->subfile) {
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rb.Push(FileSys::ERROR_UNSUPPORTED_OPEN_FLAGS);
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rb.Push<u32>(0);
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rb.PushMappedBuffer(buffer);
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return;
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}
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std::vector<u8> data(length);
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buffer.Read(data.data(), 0, data.size());
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ResultVal<std::size_t> written = backend->Write(offset, data.size(), flush != 0, data.data());
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if (written.Failed()) {
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rb.Push(written.Code());
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rb.Push<u32>(0);
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} else {
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rb.Push(RESULT_SUCCESS);
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rb.Push<u32>(static_cast<u32>(*written));
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}
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rb.PushMappedBuffer(buffer);
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}
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void File::GetSize(Kernel::HLERequestContext& ctx) {
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IPC::RequestParser rp(ctx, 0x0804, 0, 0);
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const FileSessionSlot* file = GetSessionData(ctx.Session());
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IPC::RequestBuilder rb = rp.MakeBuilder(3, 0);
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rb.Push(RESULT_SUCCESS);
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rb.Push<u64>(file->size);
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}
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void File::SetSize(Kernel::HLERequestContext& ctx) {
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IPC::RequestParser rp(ctx, 0x0805, 2, 0);
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u64 size = rp.Pop<u64>();
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FileSessionSlot* file = GetSessionData(ctx.Session());
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IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
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// SetSize can not be called on subfiles.
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if (file->subfile) {
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rb.Push(FileSys::ERROR_UNSUPPORTED_OPEN_FLAGS);
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return;
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}
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file->size = size;
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backend->SetSize(size);
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rb.Push(RESULT_SUCCESS);
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}
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void File::Close(Kernel::HLERequestContext& ctx) {
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IPC::RequestParser rp(ctx, 0x0808, 0, 0);
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// TODO(Subv): Only close the backend if this client is the only one left.
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if (connected_sessions.size() > 1)
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LOG_WARNING(Service_FS, "Closing File backend but {} clients still connected",
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connected_sessions.size());
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backend->Close();
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IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
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rb.Push(RESULT_SUCCESS);
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}
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void File::Flush(Kernel::HLERequestContext& ctx) {
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IPC::RequestParser rp(ctx, 0x0809, 0, 0);
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IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
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const FileSessionSlot* file = GetSessionData(ctx.Session());
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// Subfiles can not be flushed.
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if (file->subfile) {
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rb.Push(FileSys::ERROR_UNSUPPORTED_OPEN_FLAGS);
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return;
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}
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backend->Flush();
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rb.Push(RESULT_SUCCESS);
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}
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void File::SetPriority(Kernel::HLERequestContext& ctx) {
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IPC::RequestParser rp(ctx, 0x080A, 1, 0);
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FileSessionSlot* file = GetSessionData(ctx.Session());
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file->priority = rp.Pop<u32>();
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IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
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rb.Push(RESULT_SUCCESS);
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}
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void File::GetPriority(Kernel::HLERequestContext& ctx) {
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IPC::RequestParser rp(ctx, 0x080B, 0, 0);
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const FileSessionSlot* file = GetSessionData(ctx.Session());
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IPC::RequestBuilder rb = rp.MakeBuilder(2, 0);
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rb.Push(RESULT_SUCCESS);
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rb.Push(file->priority);
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}
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void File::OpenLinkFile(Kernel::HLERequestContext& ctx) {
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LOG_WARNING(Service_FS, "(STUBBED) File command OpenLinkFile {}", GetName());
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using Kernel::ClientSession;
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using Kernel::ServerSession;
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using Kernel::SharedPtr;
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IPC::RequestParser rp(ctx, 0x080C, 0, 0);
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IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
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auto sessions = ServerSession::CreateSessionPair(GetName());
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auto server = std::get<SharedPtr<ServerSession>>(sessions);
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ClientConnected(server);
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FileSessionSlot* slot = GetSessionData(server);
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const FileSessionSlot* original_file = GetSessionData(ctx.Session());
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slot->priority = original_file->priority;
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slot->offset = 0;
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slot->size = backend->GetSize();
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slot->subfile = false;
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rb.Push(RESULT_SUCCESS);
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rb.PushMoveObjects(std::get<SharedPtr<ClientSession>>(sessions));
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}
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void File::OpenSubFile(Kernel::HLERequestContext& ctx) {
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IPC::RequestParser rp(ctx, 0x0801, 4, 0);
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s64 offset = rp.PopRaw<s64>();
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s64 size = rp.PopRaw<s64>();
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IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
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const FileSessionSlot* original_file = GetSessionData(ctx.Session());
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if (original_file->subfile) {
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// OpenSubFile can not be called on a file which is already as subfile
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rb.Push(FileSys::ERROR_UNSUPPORTED_OPEN_FLAGS);
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return;
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}
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if (offset < 0 || size < 0) {
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rb.Push(FileSys::ERR_WRITE_BEYOND_END);
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return;
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}
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std::size_t end = offset + size;
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// TODO(Subv): Check for overflow and return ERR_WRITE_BEYOND_END
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if (end > original_file->size) {
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rb.Push(FileSys::ERR_WRITE_BEYOND_END);
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return;
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}
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using Kernel::ClientSession;
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using Kernel::ServerSession;
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using Kernel::SharedPtr;
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auto sessions = ServerSession::CreateSessionPair(GetName());
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auto server = std::get<SharedPtr<ServerSession>>(sessions);
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ClientConnected(server);
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FileSessionSlot* slot = GetSessionData(server);
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slot->priority = original_file->priority;
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slot->offset = offset;
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slot->size = size;
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slot->subfile = true;
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rb.Push(RESULT_SUCCESS);
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rb.PushMoveObjects(std::get<SharedPtr<ClientSession>>(sessions));
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}
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Kernel::SharedPtr<Kernel::ClientSession> File::Connect() {
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auto sessions = Kernel::ServerSession::CreateSessionPair(GetName());
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auto server = std::get<Kernel::SharedPtr<Kernel::ServerSession>>(sessions);
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ClientConnected(server);
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FileSessionSlot* slot = GetSessionData(server);
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slot->priority = 0;
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slot->offset = 0;
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slot->size = backend->GetSize();
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slot->subfile = false;
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return std::get<Kernel::SharedPtr<Kernel::ClientSession>>(sessions);
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}
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std::size_t File::GetSessionFileOffset(Kernel::SharedPtr<Kernel::ServerSession> session) {
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const FileSessionSlot* slot = GetSessionData(session);
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ASSERT(slot);
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return slot->offset;
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}
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std::size_t File::GetSessionFileSize(Kernel::SharedPtr<Kernel::ServerSession> session) {
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const FileSessionSlot* slot = GetSessionData(session);
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ASSERT(slot);
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return slot->size;
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}
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Directory::Directory(std::unique_ptr<FileSys::DirectoryBackend>&& backend,
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const FileSys::Path& path)
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: ServiceFramework("", 1), path(path), backend(std::move(backend)) {
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static const FunctionInfo functions[] = {
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// clang-format off
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{0x08010042, &Directory::Read, "Read"},
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{0x08020000, &Directory::Close, "Close"},
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// clang-format on
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};
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RegisterHandlers(functions);
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}
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Directory::~Directory() {}
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void Directory::Read(Kernel::HLERequestContext& ctx) {
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IPC::RequestParser rp(ctx, 0x0801, 1, 2);
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u32 count = rp.Pop<u32>();
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auto& buffer = rp.PopMappedBuffer();
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std::vector<FileSys::Entry> entries(count);
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LOG_TRACE(Service_FS, "Read {}: count={}", GetName(), count);
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// Number of entries actually read
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u32 read = backend->Read(static_cast<u32>(entries.size()), entries.data());
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buffer.Write(entries.data(), 0, read * sizeof(FileSys::Entry));
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IPC::RequestBuilder rb = rp.MakeBuilder(2, 2);
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rb.Push(RESULT_SUCCESS);
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rb.Push(read);
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rb.PushMappedBuffer(buffer);
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}
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void Directory::Close(Kernel::HLERequestContext& ctx) {
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IPC::RequestParser rp(ctx, 0x0802, 0, 0);
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LOG_TRACE(Service_FS, "Close {}", GetName());
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backend->Close();
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IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
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rb.Push(RESULT_SUCCESS);
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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using FileSys::ArchiveBackend;
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using FileSys::ArchiveFactory;
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@ -9,15 +9,9 @@
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#include <vector>
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#include "common/common_types.h"
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#include "core/file_sys/archive_backend.h"
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#include "core/hle/kernel/hle_ipc.h"
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#include "core/hle/kernel/kernel.h"
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#include "core/hle/result.h"
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#include "core/hle/service/service.h"
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namespace FileSys {
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class DirectoryBackend;
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class FileBackend;
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} // namespace FileSys
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#include "core/hle/service/fs/directory.h"
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#include "core/hle/service/fs/file.h"
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/// The unique system identifier hash, also known as ID0
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static constexpr char SYSTEM_ID[]{"00000000000000000000000000000000"};
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@ -49,68 +43,6 @@ enum class MediaType : u32 { NAND = 0, SDMC = 1, GameCard = 2 };
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typedef u64 ArchiveHandle;
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struct FileSessionSlot : public Kernel::SessionRequestHandler::SessionDataBase {
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u32 priority; ///< Priority of the file. TODO(Subv): Find out what this means
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u64 offset; ///< Offset that this session will start reading from.
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u64 size; ///< Max size of the file that this session is allowed to access
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bool subfile; ///< Whether this file was opened via OpenSubFile or not.
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};
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// TODO: File is not a real service, but it can still utilize ServiceFramework::RegisterHandlers.
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// Consider splitting ServiceFramework interface.
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class File final : public ServiceFramework<File, FileSessionSlot> {
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public:
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File(std::unique_ptr<FileSys::FileBackend>&& backend, const FileSys::Path& path);
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~File() = default;
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std::string GetName() const {
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return "Path: " + path.DebugStr();
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}
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FileSys::Path path; ///< Path of the file
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std::unique_ptr<FileSys::FileBackend> backend; ///< File backend interface
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/// Creates a new session to this File and returns the ClientSession part of the connection.
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Kernel::SharedPtr<Kernel::ClientSession> Connect();
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// Returns the start offset of an open file represented by the input session, opened with
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// OpenSubFile.
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std::size_t GetSessionFileOffset(Kernel::SharedPtr<Kernel::ServerSession> session);
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// Returns the size of an open file represented by the input session, opened with
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// OpenSubFile.
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std::size_t GetSessionFileSize(Kernel::SharedPtr<Kernel::ServerSession> session);
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private:
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void Read(Kernel::HLERequestContext& ctx);
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void Write(Kernel::HLERequestContext& ctx);
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void GetSize(Kernel::HLERequestContext& ctx);
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void SetSize(Kernel::HLERequestContext& ctx);
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void Close(Kernel::HLERequestContext& ctx);
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void Flush(Kernel::HLERequestContext& ctx);
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void SetPriority(Kernel::HLERequestContext& ctx);
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void GetPriority(Kernel::HLERequestContext& ctx);
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void OpenLinkFile(Kernel::HLERequestContext& ctx);
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void OpenSubFile(Kernel::HLERequestContext& ctx);
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};
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class Directory final : public ServiceFramework<Directory> {
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public:
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Directory(std::unique_ptr<FileSys::DirectoryBackend>&& backend, const FileSys::Path& path);
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~Directory();
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std::string GetName() const {
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return "Directory: " + path.DebugStr();
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}
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FileSys::Path path; ///< Path of the directory
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std::unique_ptr<FileSys::DirectoryBackend> backend; ///< File backend interface
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protected:
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void Read(Kernel::HLERequestContext& ctx);
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void Close(Kernel::HLERequestContext& ctx);
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};
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/**
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* Opens an archive
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* @param id_code IdCode of the archive to open
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51
src/core/hle/service/fs/directory.cpp
Normal file
51
src/core/hle/service/fs/directory.cpp
Normal file
@ -0,0 +1,51 @@
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// Copyright 2018 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include "common/logging/log.h"
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#include "core/file_sys/directory_backend.h"
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#include "core/hle/ipc_helpers.h"
|
||||
#include "core/hle/service/fs/directory.h"
|
||||
|
||||
namespace Service::FS {
|
||||
|
||||
Directory::Directory(std::unique_ptr<FileSys::DirectoryBackend>&& backend,
|
||||
const FileSys::Path& path)
|
||||
: ServiceFramework("", 1), path(path), backend(std::move(backend)) {
|
||||
static const FunctionInfo functions[] = {
|
||||
// clang-format off
|
||||
{0x08010042, &Directory::Read, "Read"},
|
||||
{0x08020000, &Directory::Close, "Close"},
|
||||
// clang-format on
|
||||
};
|
||||
RegisterHandlers(functions);
|
||||
}
|
||||
|
||||
Directory::~Directory() {}
|
||||
|
||||
void Directory::Read(Kernel::HLERequestContext& ctx) {
|
||||
IPC::RequestParser rp(ctx, 0x0801, 1, 2);
|
||||
u32 count = rp.Pop<u32>();
|
||||
auto& buffer = rp.PopMappedBuffer();
|
||||
std::vector<FileSys::Entry> entries(count);
|
||||
LOG_TRACE(Service_FS, "Read {}: count={}", GetName(), count);
|
||||
// Number of entries actually read
|
||||
u32 read = backend->Read(static_cast<u32>(entries.size()), entries.data());
|
||||
buffer.Write(entries.data(), 0, read * sizeof(FileSys::Entry));
|
||||
|
||||
IPC::RequestBuilder rb = rp.MakeBuilder(2, 2);
|
||||
rb.Push(RESULT_SUCCESS);
|
||||
rb.Push(read);
|
||||
rb.PushMappedBuffer(buffer);
|
||||
}
|
||||
|
||||
void Directory::Close(Kernel::HLERequestContext& ctx) {
|
||||
IPC::RequestParser rp(ctx, 0x0802, 0, 0);
|
||||
LOG_TRACE(Service_FS, "Close {}", GetName());
|
||||
backend->Close();
|
||||
|
||||
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
|
||||
rb.Push(RESULT_SUCCESS);
|
||||
}
|
||||
|
||||
} // namespace Service::FS
|
||||
30
src/core/hle/service/fs/directory.h
Normal file
30
src/core/hle/service/fs/directory.h
Normal file
@ -0,0 +1,30 @@
|
||||
// Copyright 2018 Citra Emulator Project
|
||||
// Licensed under GPLv2 or any later version
|
||||
// Refer to the license.txt file included.
|
||||
|
||||
#pragma once
|
||||
|
||||
#include "core/file_sys/archive_backend.h"
|
||||
#include "core/hle/kernel/kernel.h"
|
||||
#include "core/hle/service/service.h"
|
||||
|
||||
namespace Service::FS {
|
||||
|
||||
class Directory final : public ServiceFramework<Directory> {
|
||||
public:
|
||||
Directory(std::unique_ptr<FileSys::DirectoryBackend>&& backend, const FileSys::Path& path);
|
||||
~Directory();
|
||||
|
||||
std::string GetName() const {
|
||||
return "Directory: " + path.DebugStr();
|
||||
}
|
||||
|
||||
FileSys::Path path; ///< Path of the directory
|
||||
std::unique_ptr<FileSys::DirectoryBackend> backend; ///< File backend interface
|
||||
|
||||
protected:
|
||||
void Read(Kernel::HLERequestContext& ctx);
|
||||
void Close(Kernel::HLERequestContext& ctx);
|
||||
};
|
||||
|
||||
} // namespace Service::FS
|
||||
286
src/core/hle/service/fs/file.cpp
Normal file
286
src/core/hle/service/fs/file.cpp
Normal file
@ -0,0 +1,286 @@
|
||||
// Copyright 2018 Citra Emulator Project
|
||||
// Licensed under GPLv2 or any later version
|
||||
// Refer to the license.txt file included.
|
||||
|
||||
#include "common/logging/log.h"
|
||||
#include "core/file_sys/errors.h"
|
||||
#include "core/file_sys/file_backend.h"
|
||||
#include "core/hle/ipc_helpers.h"
|
||||
#include "core/hle/kernel/client_port.h"
|
||||
#include "core/hle/kernel/client_session.h"
|
||||
#include "core/hle/kernel/event.h"
|
||||
#include "core/hle/kernel/server_session.h"
|
||||
#include "core/hle/service/fs/file.h"
|
||||
|
||||
namespace Service::FS {
|
||||
|
||||
File::File(std::unique_ptr<FileSys::FileBackend>&& backend, const FileSys::Path& path)
|
||||
: ServiceFramework("", 1), path(path), backend(std::move(backend)) {
|
||||
static const FunctionInfo functions[] = {
|
||||
{0x08010100, &File::OpenSubFile, "OpenSubFile"},
|
||||
{0x080200C2, &File::Read, "Read"},
|
||||
{0x08030102, &File::Write, "Write"},
|
||||
{0x08040000, &File::GetSize, "GetSize"},
|
||||
{0x08050080, &File::SetSize, "SetSize"},
|
||||
{0x08080000, &File::Close, "Close"},
|
||||
{0x08090000, &File::Flush, "Flush"},
|
||||
{0x080A0040, &File::SetPriority, "SetPriority"},
|
||||
{0x080B0000, &File::GetPriority, "GetPriority"},
|
||||
{0x080C0000, &File::OpenLinkFile, "OpenLinkFile"},
|
||||
};
|
||||
RegisterHandlers(functions);
|
||||
}
|
||||
|
||||
void File::Read(Kernel::HLERequestContext& ctx) {
|
||||
IPC::RequestParser rp(ctx, 0x0802, 3, 2);
|
||||
u64 offset = rp.Pop<u64>();
|
||||
u32 length = rp.Pop<u32>();
|
||||
auto& buffer = rp.PopMappedBuffer();
|
||||
LOG_TRACE(Service_FS, "Read {}: offset=0x{:x} length=0x{:08X}", GetName(), offset, length);
|
||||
|
||||
const FileSessionSlot* file = GetSessionData(ctx.Session());
|
||||
|
||||
if (file->subfile && length > file->size) {
|
||||
LOG_WARNING(Service_FS, "Trying to read beyond the subfile size, truncating");
|
||||
length = static_cast<u32>(file->size);
|
||||
}
|
||||
|
||||
// This file session might have a specific offset from where to start reading, apply it.
|
||||
offset += file->offset;
|
||||
|
||||
if (offset + length > backend->GetSize()) {
|
||||
LOG_ERROR(Service_FS,
|
||||
"Reading from out of bounds offset=0x{:x} length=0x{:08X} file_size=0x{:x}",
|
||||
offset, length, backend->GetSize());
|
||||
}
|
||||
|
||||
IPC::RequestBuilder rb = rp.MakeBuilder(2, 2);
|
||||
|
||||
std::vector<u8> data(length);
|
||||
ResultVal<std::size_t> read = backend->Read(offset, data.size(), data.data());
|
||||
if (read.Failed()) {
|
||||
rb.Push(read.Code());
|
||||
rb.Push<u32>(0);
|
||||
} else {
|
||||
buffer.Write(data.data(), 0, *read);
|
||||
rb.Push(RESULT_SUCCESS);
|
||||
rb.Push<u32>(static_cast<u32>(*read));
|
||||
}
|
||||
rb.PushMappedBuffer(buffer);
|
||||
|
||||
std::chrono::nanoseconds read_timeout_ns{backend->GetReadDelayNs(length)};
|
||||
ctx.SleepClientThread(Kernel::GetCurrentThread(), "file::read", read_timeout_ns,
|
||||
[](Kernel::SharedPtr<Kernel::Thread> thread,
|
||||
Kernel::HLERequestContext& ctx, Kernel::ThreadWakeupReason reason) {
|
||||
// Nothing to do here
|
||||
});
|
||||
}
|
||||
|
||||
void File::Write(Kernel::HLERequestContext& ctx) {
|
||||
IPC::RequestParser rp(ctx, 0x0803, 4, 2);
|
||||
u64 offset = rp.Pop<u64>();
|
||||
u32 length = rp.Pop<u32>();
|
||||
u32 flush = rp.Pop<u32>();
|
||||
auto& buffer = rp.PopMappedBuffer();
|
||||
LOG_TRACE(Service_FS, "Write {}: offset=0x{:x} length={}, flush=0x{:x}", GetName(), offset,
|
||||
length, flush);
|
||||
|
||||
IPC::RequestBuilder rb = rp.MakeBuilder(2, 2);
|
||||
|
||||
const FileSessionSlot* file = GetSessionData(ctx.Session());
|
||||
|
||||
// Subfiles can not be written to
|
||||
if (file->subfile) {
|
||||
rb.Push(FileSys::ERROR_UNSUPPORTED_OPEN_FLAGS);
|
||||
rb.Push<u32>(0);
|
||||
rb.PushMappedBuffer(buffer);
|
||||
return;
|
||||
}
|
||||
|
||||
std::vector<u8> data(length);
|
||||
buffer.Read(data.data(), 0, data.size());
|
||||
ResultVal<std::size_t> written = backend->Write(offset, data.size(), flush != 0, data.data());
|
||||
if (written.Failed()) {
|
||||
rb.Push(written.Code());
|
||||
rb.Push<u32>(0);
|
||||
} else {
|
||||
rb.Push(RESULT_SUCCESS);
|
||||
rb.Push<u32>(static_cast<u32>(*written));
|
||||
}
|
||||
rb.PushMappedBuffer(buffer);
|
||||
}
|
||||
|
||||
void File::GetSize(Kernel::HLERequestContext& ctx) {
|
||||
IPC::RequestParser rp(ctx, 0x0804, 0, 0);
|
||||
|
||||
const FileSessionSlot* file = GetSessionData(ctx.Session());
|
||||
|
||||
IPC::RequestBuilder rb = rp.MakeBuilder(3, 0);
|
||||
rb.Push(RESULT_SUCCESS);
|
||||
rb.Push<u64>(file->size);
|
||||
}
|
||||
|
||||
void File::SetSize(Kernel::HLERequestContext& ctx) {
|
||||
IPC::RequestParser rp(ctx, 0x0805, 2, 0);
|
||||
u64 size = rp.Pop<u64>();
|
||||
|
||||
FileSessionSlot* file = GetSessionData(ctx.Session());
|
||||
|
||||
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
|
||||
|
||||
// SetSize can not be called on subfiles.
|
||||
if (file->subfile) {
|
||||
rb.Push(FileSys::ERROR_UNSUPPORTED_OPEN_FLAGS);
|
||||
return;
|
||||
}
|
||||
|
||||
file->size = size;
|
||||
backend->SetSize(size);
|
||||
rb.Push(RESULT_SUCCESS);
|
||||
}
|
||||
|
||||
void File::Close(Kernel::HLERequestContext& ctx) {
|
||||
IPC::RequestParser rp(ctx, 0x0808, 0, 0);
|
||||
|
||||
// TODO(Subv): Only close the backend if this client is the only one left.
|
||||
if (connected_sessions.size() > 1)
|
||||
LOG_WARNING(Service_FS, "Closing File backend but {} clients still connected",
|
||||
connected_sessions.size());
|
||||
|
||||
backend->Close();
|
||||
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
|
||||
rb.Push(RESULT_SUCCESS);
|
||||
}
|
||||
|
||||
void File::Flush(Kernel::HLERequestContext& ctx) {
|
||||
IPC::RequestParser rp(ctx, 0x0809, 0, 0);
|
||||
|
||||
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
|
||||
|
||||
const FileSessionSlot* file = GetSessionData(ctx.Session());
|
||||
|
||||
// Subfiles can not be flushed.
|
||||
if (file->subfile) {
|
||||
rb.Push(FileSys::ERROR_UNSUPPORTED_OPEN_FLAGS);
|
||||
return;
|
||||
}
|
||||
|
||||
backend->Flush();
|
||||
rb.Push(RESULT_SUCCESS);
|
||||
}
|
||||
|
||||
void File::SetPriority(Kernel::HLERequestContext& ctx) {
|
||||
IPC::RequestParser rp(ctx, 0x080A, 1, 0);
|
||||
|
||||
FileSessionSlot* file = GetSessionData(ctx.Session());
|
||||
file->priority = rp.Pop<u32>();
|
||||
|
||||
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
|
||||
rb.Push(RESULT_SUCCESS);
|
||||
}
|
||||
|
||||
void File::GetPriority(Kernel::HLERequestContext& ctx) {
|
||||
IPC::RequestParser rp(ctx, 0x080B, 0, 0);
|
||||
const FileSessionSlot* file = GetSessionData(ctx.Session());
|
||||
|
||||
IPC::RequestBuilder rb = rp.MakeBuilder(2, 0);
|
||||
rb.Push(RESULT_SUCCESS);
|
||||
rb.Push(file->priority);
|
||||
}
|
||||
|
||||
void File::OpenLinkFile(Kernel::HLERequestContext& ctx) {
|
||||
LOG_WARNING(Service_FS, "(STUBBED) File command OpenLinkFile {}", GetName());
|
||||
using Kernel::ClientSession;
|
||||
using Kernel::ServerSession;
|
||||
using Kernel::SharedPtr;
|
||||
IPC::RequestParser rp(ctx, 0x080C, 0, 0);
|
||||
IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
|
||||
auto sessions = ServerSession::CreateSessionPair(GetName());
|
||||
auto server = std::get<SharedPtr<ServerSession>>(sessions);
|
||||
ClientConnected(server);
|
||||
|
||||
FileSessionSlot* slot = GetSessionData(server);
|
||||
const FileSessionSlot* original_file = GetSessionData(ctx.Session());
|
||||
|
||||
slot->priority = original_file->priority;
|
||||
slot->offset = 0;
|
||||
slot->size = backend->GetSize();
|
||||
slot->subfile = false;
|
||||
|
||||
rb.Push(RESULT_SUCCESS);
|
||||
rb.PushMoveObjects(std::get<SharedPtr<ClientSession>>(sessions));
|
||||
}
|
||||
|
||||
void File::OpenSubFile(Kernel::HLERequestContext& ctx) {
|
||||
IPC::RequestParser rp(ctx, 0x0801, 4, 0);
|
||||
s64 offset = rp.PopRaw<s64>();
|
||||
s64 size = rp.PopRaw<s64>();
|
||||
|
||||
IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
|
||||
|
||||
const FileSessionSlot* original_file = GetSessionData(ctx.Session());
|
||||
|
||||
if (original_file->subfile) {
|
||||
// OpenSubFile can not be called on a file which is already as subfile
|
||||
rb.Push(FileSys::ERROR_UNSUPPORTED_OPEN_FLAGS);
|
||||
return;
|
||||
}
|
||||
|
||||
if (offset < 0 || size < 0) {
|
||||
rb.Push(FileSys::ERR_WRITE_BEYOND_END);
|
||||
return;
|
||||
}
|
||||
|
||||
std::size_t end = offset + size;
|
||||
|
||||
// TODO(Subv): Check for overflow and return ERR_WRITE_BEYOND_END
|
||||
|
||||
if (end > original_file->size) {
|
||||
rb.Push(FileSys::ERR_WRITE_BEYOND_END);
|
||||
return;
|
||||
}
|
||||
|
||||
using Kernel::ClientSession;
|
||||
using Kernel::ServerSession;
|
||||
using Kernel::SharedPtr;
|
||||
auto sessions = ServerSession::CreateSessionPair(GetName());
|
||||
auto server = std::get<SharedPtr<ServerSession>>(sessions);
|
||||
ClientConnected(server);
|
||||
|
||||
FileSessionSlot* slot = GetSessionData(server);
|
||||
slot->priority = original_file->priority;
|
||||
slot->offset = offset;
|
||||
slot->size = size;
|
||||
slot->subfile = true;
|
||||
|
||||
rb.Push(RESULT_SUCCESS);
|
||||
rb.PushMoveObjects(std::get<SharedPtr<ClientSession>>(sessions));
|
||||
}
|
||||
|
||||
Kernel::SharedPtr<Kernel::ClientSession> File::Connect() {
|
||||
auto sessions = Kernel::ServerSession::CreateSessionPair(GetName());
|
||||
auto server = std::get<Kernel::SharedPtr<Kernel::ServerSession>>(sessions);
|
||||
ClientConnected(server);
|
||||
|
||||
FileSessionSlot* slot = GetSessionData(server);
|
||||
slot->priority = 0;
|
||||
slot->offset = 0;
|
||||
slot->size = backend->GetSize();
|
||||
slot->subfile = false;
|
||||
|
||||
return std::get<Kernel::SharedPtr<Kernel::ClientSession>>(sessions);
|
||||
}
|
||||
|
||||
std::size_t File::GetSessionFileOffset(Kernel::SharedPtr<Kernel::ServerSession> session) {
|
||||
const FileSessionSlot* slot = GetSessionData(session);
|
||||
ASSERT(slot);
|
||||
return slot->offset;
|
||||
}
|
||||
|
||||
std::size_t File::GetSessionFileSize(Kernel::SharedPtr<Kernel::ServerSession> session) {
|
||||
const FileSessionSlot* slot = GetSessionData(session);
|
||||
ASSERT(slot);
|
||||
return slot->size;
|
||||
}
|
||||
|
||||
} // namespace Service::FS
|
||||
58
src/core/hle/service/fs/file.h
Normal file
58
src/core/hle/service/fs/file.h
Normal file
@ -0,0 +1,58 @@
|
||||
// Copyright 2018 Citra Emulator Project
|
||||
// Licensed under GPLv2 or any later version
|
||||
// Refer to the license.txt file included.
|
||||
|
||||
#pragma once
|
||||
|
||||
#include "core/file_sys/archive_backend.h"
|
||||
#include "core/hle/kernel/kernel.h"
|
||||
#include "core/hle/service/service.h"
|
||||
|
||||
namespace Service::FS {
|
||||
|
||||
struct FileSessionSlot : public Kernel::SessionRequestHandler::SessionDataBase {
|
||||
u32 priority; ///< Priority of the file. TODO(Subv): Find out what this means
|
||||
u64 offset; ///< Offset that this session will start reading from.
|
||||
u64 size; ///< Max size of the file that this session is allowed to access
|
||||
bool subfile; ///< Whether this file was opened via OpenSubFile or not.
|
||||
};
|
||||
|
||||
// TODO: File is not a real service, but it can still utilize ServiceFramework::RegisterHandlers.
|
||||
// Consider splitting ServiceFramework interface.
|
||||
class File final : public ServiceFramework<File, FileSessionSlot> {
|
||||
public:
|
||||
File(std::unique_ptr<FileSys::FileBackend>&& backend, const FileSys::Path& path);
|
||||
~File() = default;
|
||||
|
||||
std::string GetName() const {
|
||||
return "Path: " + path.DebugStr();
|
||||
}
|
||||
|
||||
FileSys::Path path; ///< Path of the file
|
||||
std::unique_ptr<FileSys::FileBackend> backend; ///< File backend interface
|
||||
|
||||
/// Creates a new session to this File and returns the ClientSession part of the connection.
|
||||
Kernel::SharedPtr<Kernel::ClientSession> Connect();
|
||||
|
||||
// Returns the start offset of an open file represented by the input session, opened with
|
||||
// OpenSubFile.
|
||||
std::size_t GetSessionFileOffset(Kernel::SharedPtr<Kernel::ServerSession> session);
|
||||
|
||||
// Returns the size of an open file represented by the input session, opened with
|
||||
// OpenSubFile.
|
||||
std::size_t GetSessionFileSize(Kernel::SharedPtr<Kernel::ServerSession> session);
|
||||
|
||||
private:
|
||||
void Read(Kernel::HLERequestContext& ctx);
|
||||
void Write(Kernel::HLERequestContext& ctx);
|
||||
void GetSize(Kernel::HLERequestContext& ctx);
|
||||
void SetSize(Kernel::HLERequestContext& ctx);
|
||||
void Close(Kernel::HLERequestContext& ctx);
|
||||
void Flush(Kernel::HLERequestContext& ctx);
|
||||
void SetPriority(Kernel::HLERequestContext& ctx);
|
||||
void GetPriority(Kernel::HLERequestContext& ctx);
|
||||
void OpenLinkFile(Kernel::HLERequestContext& ctx);
|
||||
void OpenSubFile(Kernel::HLERequestContext& ctx);
|
||||
};
|
||||
|
||||
} // namespace Service::FS
|
||||
Loading…
Reference in New Issue
Block a user