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HLE/FS: Use the SessionData parameter of ServiceFramework in the File class.

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This commit is contained in:
Subv 2017-12-13 13:58:25 -05:00
parent daecd812b0
commit b5bfaaae29
2 changed files with 46 additions and 77 deletions
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100
src/core/hle/service/fs/archive.cpp
View file

@ -92,15 +92,15 @@ void File::Read(Kernel::HLERequestContext& ctx) {
LOG_TRACE(Service_FS, "Read %s: offset=0x%" PRIx64 " length=0x%08X", GetName().c_str(), offset,
length);
const SessionSlot& file = GetSessionSlot(ctx.Session());
const FileSessionSlot* file = GetSessionData(ctx.Session());
if (file.subfile && length > file.size) {
if (file->subfile && length > file->size) {
LOG_WARNING(Service_FS, "Trying to read beyond the subfile size, truncating");
length = file.size;
length = file->size;
}
// This file session might have a specific offset from where to start reading, apply it.
offset += file.offset;
offset += file->offset;
if (offset + length > backend->GetSize()) {
LOG_ERROR(Service_FS, "Reading from out of bounds offset=0x%" PRIx64
@ -134,10 +134,10 @@ void File::Write(Kernel::HLERequestContext& ctx) {
IPC::RequestBuilder rb = rp.MakeBuilder(2, 2);
const SessionSlot& file = GetSessionSlot(ctx.Session());
const FileSessionSlot* file = GetSessionData(ctx.Session());
// Subfiles can not be written to
if (file.subfile) {
if (file->subfile) {
rb.Push(FileSys::ERROR_UNSUPPORTED_OPEN_FLAGS);
rb.Push<u32>(0);
rb.PushMappedBuffer(buffer);
@ -160,28 +160,28 @@ void File::Write(Kernel::HLERequestContext& ctx) {
void File::GetSize(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp(ctx, 0x0804, 0, 0);
const SessionSlot& file = GetSessionSlot(ctx.Session());
const FileSessionSlot* file = GetSessionData(ctx.Session());
IPC::RequestBuilder rb = rp.MakeBuilder(3, 0);
rb.Push(RESULT_SUCCESS);
rb.Push<u64>(file.size);
rb.Push<u64>(file->size);
}
void File::SetSize(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp(ctx, 0x0805, 2, 0);
u64 size = rp.Pop<u64>();
SessionSlot& file = GetSessionSlot(ctx.Session());
FileSessionSlot* file = GetSessionData(ctx.Session());
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
// SetSize can not be called on subfiles.
if (file.subfile) {
if (file->subfile) {
rb.Push(FileSys::ERROR_UNSUPPORTED_OPEN_FLAGS);
return;
}
file.size = size;
file->size = size;
backend->SetSize(size);
rb.Push(RESULT_SUCCESS);
}
@ -190,9 +190,9 @@ 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 (session_slots.size() > 1)
if (connected_sessions.size() > 1)
LOG_WARNING(Service_FS, "Closing File backend but %zu clients still connected",
session_slots.size());
connected_sessions.size());
backend->Close();
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
@ -204,10 +204,10 @@ void File::Flush(Kernel::HLERequestContext& ctx) {
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
const SessionSlot& file = GetSessionSlot(ctx.Session());
const FileSessionSlot* file = GetSessionData(ctx.Session());
// Subfiles can not be flushed.
if (file.subfile) {
if (file->subfile) {
rb.Push(FileSys::ERROR_UNSUPPORTED_OPEN_FLAGS);
return;
}
@ -219,8 +219,8 @@ void File::Flush(Kernel::HLERequestContext& ctx) {
void File::SetPriority(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp(ctx, 0x080A, 1, 0);
SessionSlot& file = GetSessionSlot(ctx.Session());
file.priority = rp.Pop<u32>();
FileSessionSlot* file = GetSessionData(ctx.Session());
file->priority = rp.Pop<u32>();
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
rb.Push(RESULT_SUCCESS);
@ -228,11 +228,11 @@ void File::SetPriority(Kernel::HLERequestContext& ctx) {
void File::GetPriority(Kernel::HLERequestContext& ctx) {
IPC::RequestParser rp(ctx, 0x080B, 0, 0);
const SessionSlot& file = GetSessionSlot(ctx.Session());
const FileSessionSlot* file = GetSessionData(ctx.Session());
IPC::RequestBuilder rb = rp.MakeBuilder(2, 0);
rb.Push(RESULT_SUCCESS);
rb.Push(file.priority);
rb.Push(file->priority);
}
void File::OpenLinkFile(Kernel::HLERequestContext& ctx) {
@ -246,16 +246,13 @@ void File::OpenLinkFile(Kernel::HLERequestContext& ctx) {
auto server = std::get<SharedPtr<ServerSession>>(sessions);
ClientConnected(server);
const SessionSlot& original_file = GetSessionSlot(ctx.Session());
FileSessionSlot* slot = GetSessionData(server);
const FileSessionSlot* original_file = GetSessionData(ctx.Session());
SessionSlot slot{};
slot.priority = original_file.priority;
slot.offset = 0;
slot.size = backend->GetSize();
slot.session = server;
slot.subfile = false;
session_slots.emplace_back(std::move(slot));
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));
@ -268,9 +265,9 @@ void File::OpenSubFile(Kernel::HLERequestContext& ctx) {
IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
const SessionSlot& original_file = GetSessionSlot(ctx.Session());
const FileSessionSlot* original_file = GetSessionData(ctx.Session());
if (original_file.subfile) {
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;
@ -285,7 +282,7 @@ void File::OpenSubFile(Kernel::HLERequestContext& ctx) {
// TODO(Subv): Check for overflow and return ERR_WRITE_BEYOND_END
if (end > original_file.size) {
if (end > original_file->size) {
rb.Push(FileSys::ERR_WRITE_BEYOND_END);
return;
}
@ -297,47 +294,26 @@ void File::OpenSubFile(Kernel::HLERequestContext& ctx) {
auto server = std::get<SharedPtr<ServerSession>>(sessions);
ClientConnected(server);
SessionSlot slot{};
slot.priority = original_file.priority;
slot.offset = offset;
slot.size = size;
slot.session = server;
slot.subfile = true;
session_slots.emplace_back(std::move(slot));
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));
}
File::SessionSlot& File::GetSessionSlot(Kernel::SharedPtr<Kernel::ServerSession> session) {
auto itr = std::find_if(session_slots.begin(), session_slots.end(),
[&](const SessionSlot& slot) { return slot.session == session; });
ASSERT(itr != session_slots.end());
return *itr;
}
void File::ClientDisconnected(Kernel::SharedPtr<Kernel::ServerSession> server_session) {
session_slots.erase(
std::remove_if(session_slots.begin(), session_slots.end(),
[&](const SessionSlot& slot) { return slot.session == server_session; }),
session_slots.end());
SessionRequestHandler::ClientDisconnected(server_session);
}
Kernel::SharedPtr<Kernel::ClientSession> File::Connect() {
auto sessions = Kernel::ServerSession::CreateSessionPair(GetName());
auto server = std::get<Kernel::SharedPtr<Kernel::ServerSession>>(sessions);
ClientConnected(server);
SessionSlot slot{};
slot.priority = 0;
slot.offset = 0;
slot.size = backend->GetSize();
slot.session = server;
slot.subfile = false;
session_slots.emplace_back(std::move(slot));
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);
}

23
src/core/hle/service/fs/archive.h
View file

@ -50,9 +50,16 @@ enum class MediaType : u32 { NAND = 0, SDMC = 1, GameCard = 2 };
typedef u64 ArchiveHandle;
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> {
class File final : public ServiceFramework<File, FileSessionSlot> {
public:
File(std::unique_ptr<FileSys::FileBackend>&& backend, const FileSys::Path& path);
~File() = default;
@ -67,8 +74,6 @@ public:
/// Creates a new session to this File and returns the ClientSession part of the connection.
Kernel::SharedPtr<Kernel::ClientSession> Connect();
void ClientDisconnected(Kernel::SharedPtr<Kernel::ServerSession> server_session) override;
private:
void Read(Kernel::HLERequestContext& ctx);
void Write(Kernel::HLERequestContext& ctx);
@ -80,18 +85,6 @@ private:
void GetPriority(Kernel::HLERequestContext& ctx);
void OpenLinkFile(Kernel::HLERequestContext& ctx);
void OpenSubFile(Kernel::HLERequestContext& ctx);
struct SessionSlot {
Kernel::SharedPtr<Kernel::ServerSession> session; ///< The session that this slot refers to.
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.
};
std::vector<SessionSlot> session_slots;
SessionSlot& GetSessionSlot(Kernel::SharedPtr<Kernel::ServerSession> session);
};
class Directory final : public Kernel::SessionRequestHandler {