mirror of
https://github.com/Lime3DS/Lime3DS
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e321decf98
This is a first step at fixing the conceptual insanity that is our handling of service and IPC calls. For now, interfaces still directly derived from Session because we don't have the infrastructure to do it properly. (That is, Processes and scheduling them.)
426 lines
16 KiB
C++
426 lines
16 KiB
C++
// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#include <map>
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#include "common/common_types.h"
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#include "common/file_util.h"
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#include "common/math_util.h"
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#include "core/file_sys/archive.h"
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#include "core/file_sys/archive_sdmc.h"
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#include "core/file_sys/directory.h"
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#include "core/hle/kernel/archive.h"
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#include "core/hle/kernel/session.h"
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#include "core/hle/result.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// Kernel namespace
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namespace Kernel {
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// Command to access archive file
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enum class FileCommand : u32 {
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Dummy1 = 0x000100C6,
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Control = 0x040100C4,
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OpenSubFile = 0x08010100,
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Read = 0x080200C2,
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Write = 0x08030102,
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GetSize = 0x08040000,
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SetSize = 0x08050080,
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GetAttributes = 0x08060000,
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SetAttributes = 0x08070040,
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Close = 0x08080000,
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Flush = 0x08090000,
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};
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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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class Archive : public Kernel::Session {
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public:
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std::string GetName() const override { return "Archive: " + name; }
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std::string name; ///< Name of archive (optional)
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FileSys::Archive* backend; ///< Archive backend interface
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ResultVal<bool> SyncRequest() override {
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u32* cmd_buff = Kernel::GetCommandBuffer();
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FileCommand cmd = static_cast<FileCommand>(cmd_buff[0]);
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switch (cmd) {
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// Read from archive...
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case FileCommand::Read:
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{
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u64 offset = cmd_buff[1] | ((u64)cmd_buff[2] << 32);
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u32 length = cmd_buff[3];
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u32 address = cmd_buff[5];
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// Number of bytes read
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cmd_buff[2] = backend->Read(offset, length, Memory::GetPointer(address));
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break;
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}
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// Write to archive...
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case FileCommand::Write:
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{
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u64 offset = cmd_buff[1] | ((u64)cmd_buff[2] << 32);
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u32 length = cmd_buff[3];
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u32 flush = cmd_buff[4];
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u32 address = cmd_buff[6];
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// Number of bytes written
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cmd_buff[2] = backend->Write(offset, length, flush, Memory::GetPointer(address));
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break;
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}
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case FileCommand::GetSize:
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{
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u64 filesize = (u64) backend->GetSize();
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cmd_buff[2] = (u32) filesize; // Lower word
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cmd_buff[3] = (u32) (filesize >> 32); // Upper word
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break;
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}
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case FileCommand::SetSize:
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{
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backend->SetSize(cmd_buff[1] | ((u64)cmd_buff[2] << 32));
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break;
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}
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case FileCommand::Close:
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{
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LOG_TRACE(Service_FS, "Close %s %s", GetTypeName().c_str(), GetName().c_str());
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CloseArchive(backend->GetIdCode());
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break;
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}
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// Unknown command...
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default:
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{
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LOG_ERROR(Service_FS, "Unknown command=0x%08X", cmd);
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cmd_buff[0] = UnimplementedFunction(ErrorModule::FS).raw;
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return MakeResult<bool>(false);
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}
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}
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cmd_buff[1] = 0; // No error
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return MakeResult<bool>(false);
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}
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};
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class File : public Kernel::Session {
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public:
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std::string GetName() const override { return "Path: " + path.DebugStr(); }
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FileSys::Path path; ///< Path of the file
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std::unique_ptr<FileSys::File> backend; ///< File backend interface
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ResultVal<bool> SyncRequest() override {
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u32* cmd_buff = Kernel::GetCommandBuffer();
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FileCommand cmd = static_cast<FileCommand>(cmd_buff[0]);
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switch (cmd) {
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// Read from file...
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case FileCommand::Read:
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{
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u64 offset = cmd_buff[1] | ((u64) cmd_buff[2]) << 32;
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u32 length = cmd_buff[3];
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u32 address = cmd_buff[5];
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LOG_TRACE(Service_FS, "Read %s %s: offset=0x%llx length=%d address=0x%x",
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GetTypeName().c_str(), GetName().c_str(), offset, length, address);
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cmd_buff[2] = backend->Read(offset, length, Memory::GetPointer(address));
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break;
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}
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// Write to file...
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case FileCommand::Write:
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{
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u64 offset = cmd_buff[1] | ((u64) cmd_buff[2]) << 32;
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u32 length = cmd_buff[3];
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u32 flush = cmd_buff[4];
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u32 address = cmd_buff[6];
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LOG_TRACE(Service_FS, "Write %s %s: offset=0x%llx length=%d address=0x%x, flush=0x%x",
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GetTypeName().c_str(), GetName().c_str(), offset, length, address, flush);
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cmd_buff[2] = backend->Write(offset, length, flush, Memory::GetPointer(address));
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break;
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}
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case FileCommand::GetSize:
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{
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LOG_TRACE(Service_FS, "GetSize %s %s", GetTypeName().c_str(), GetName().c_str());
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u64 size = backend->GetSize();
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cmd_buff[2] = (u32)size;
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cmd_buff[3] = size >> 32;
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break;
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}
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case FileCommand::SetSize:
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{
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u64 size = cmd_buff[1] | ((u64)cmd_buff[2] << 32);
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LOG_TRACE(Service_FS, "SetSize %s %s size=%llu",
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GetTypeName().c_str(), GetName().c_str(), size);
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backend->SetSize(size);
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break;
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}
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case FileCommand::Close:
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{
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LOG_TRACE(Service_FS, "Close %s %s", GetTypeName().c_str(), GetName().c_str());
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Kernel::g_object_pool.Destroy<File>(GetHandle());
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break;
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}
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// Unknown command...
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default:
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LOG_ERROR(Service_FS, "Unknown command=0x%08X!", cmd);
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ResultCode error = UnimplementedFunction(ErrorModule::FS);
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cmd_buff[1] = error.raw; // TODO(Link Mauve): use the correct error code for that.
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return error;
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}
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cmd_buff[1] = 0; // No error
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return MakeResult<bool>(false);
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}
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};
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class Directory : public Kernel::Session {
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public:
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std::string GetName() const override { return "Directory: " + path.DebugStr(); }
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FileSys::Path path; ///< Path of the directory
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std::unique_ptr<FileSys::Directory> backend; ///< File backend interface
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ResultVal<bool> SyncRequest() override {
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u32* cmd_buff = Kernel::GetCommandBuffer();
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DirectoryCommand cmd = static_cast<DirectoryCommand>(cmd_buff[0]);
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switch (cmd) {
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// Read from directory...
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case DirectoryCommand::Read:
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{
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u32 count = cmd_buff[1];
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u32 address = cmd_buff[3];
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auto entries = reinterpret_cast<FileSys::Entry*>(Memory::GetPointer(address));
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LOG_TRACE(Service_FS, "Read %s %s: count=%d",
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GetTypeName().c_str(), GetName().c_str(), count);
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// Number of entries actually read
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cmd_buff[2] = backend->Read(count, entries);
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break;
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}
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case DirectoryCommand::Close:
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{
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LOG_TRACE(Service_FS, "Close %s %s", GetTypeName().c_str(), GetName().c_str());
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Kernel::g_object_pool.Destroy<Directory>(GetHandle());
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break;
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}
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// Unknown command...
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default:
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LOG_ERROR(Service_FS, "Unknown command=0x%08X!", cmd);
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ResultCode error = UnimplementedFunction(ErrorModule::FS);
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cmd_buff[1] = error.raw; // TODO(Link Mauve): use the correct error code for that.
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return MakeResult<bool>(false);
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}
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cmd_buff[1] = 0; // No error
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return MakeResult<bool>(false);
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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std::map<FileSys::Archive::IdCode, Handle> g_archive_map; ///< Map of file archives by IdCode
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ResultVal<Handle> OpenArchive(FileSys::Archive::IdCode id_code) {
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auto itr = g_archive_map.find(id_code);
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if (itr == g_archive_map.end()) {
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return ResultCode(ErrorDescription::NotFound, ErrorModule::FS,
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ErrorSummary::NotFound, ErrorLevel::Permanent);
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}
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return MakeResult<Handle>(itr->second);
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}
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ResultCode CloseArchive(FileSys::Archive::IdCode id_code) {
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auto itr = g_archive_map.find(id_code);
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if (itr == g_archive_map.end()) {
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LOG_ERROR(Service_FS, "Cannot close archive %d, does not exist!", (int)id_code);
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return InvalidHandle(ErrorModule::FS);
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}
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LOG_TRACE(Service_FS, "Closed archive %d", (int) id_code);
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return RESULT_SUCCESS;
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}
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/**
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* Mounts an archive
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* @param archive Pointer to the archive to mount
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*/
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ResultCode MountArchive(Archive* archive) {
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FileSys::Archive::IdCode id_code = archive->backend->GetIdCode();
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ResultVal<Handle> archive_handle = OpenArchive(id_code);
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if (archive_handle.Succeeded()) {
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LOG_ERROR(Service_FS, "Cannot mount two archives with the same ID code! (%d)", (int) id_code);
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return archive_handle.Code();
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}
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g_archive_map[id_code] = archive->GetHandle();
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LOG_TRACE(Service_FS, "Mounted archive %s", archive->GetName().c_str());
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return RESULT_SUCCESS;
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}
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ResultCode CreateArchive(FileSys::Archive* backend, const std::string& name) {
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Archive* archive = new Archive;
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Handle handle = Kernel::g_object_pool.Create(archive);
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archive->name = name;
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archive->backend = backend;
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ResultCode result = MountArchive(archive);
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if (result.IsError()) {
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return result;
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}
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return RESULT_SUCCESS;
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}
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ResultVal<Handle> OpenFileFromArchive(Handle archive_handle, const FileSys::Path& path, const FileSys::Mode mode) {
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// TODO(bunnei): Binary type files get a raw file pointer to the archive. Currently, we create
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// the archive file handles at app loading, and then keep them persistent throughout execution.
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// Archives file handles are just reused and not actually freed until emulation shut down.
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// Verify if real hardware works this way, or if new handles are created each time
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if (path.GetType() == FileSys::Binary)
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// TODO(bunnei): FixMe - this is a hack to compensate for an incorrect FileSys backend
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// design. While the functionally of this is OK, our implementation decision to separate
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// normal files from archive file pointers is very likely wrong.
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// See https://github.com/citra-emu/citra/issues/205
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return MakeResult<Handle>(archive_handle);
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File* file = new File;
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Handle handle = Kernel::g_object_pool.Create(file);
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Archive* archive = Kernel::g_object_pool.Get<Archive>(archive_handle);
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if (archive == nullptr) {
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return InvalidHandle(ErrorModule::FS);
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}
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file->path = path;
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file->backend = archive->backend->OpenFile(path, mode);
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if (!file->backend) {
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return ResultCode(ErrorDescription::NotFound, ErrorModule::FS,
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ErrorSummary::NotFound, ErrorLevel::Permanent);
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}
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return MakeResult<Handle>(handle);
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}
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ResultCode DeleteFileFromArchive(Handle archive_handle, const FileSys::Path& path) {
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Archive* archive = Kernel::g_object_pool.GetFast<Archive>(archive_handle);
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if (archive == nullptr)
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return InvalidHandle(ErrorModule::FS);
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if (archive->backend->DeleteFile(path))
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return RESULT_SUCCESS;
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return ResultCode(ErrorDescription::NoData, ErrorModule::FS, // TODO: verify description
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ErrorSummary::Canceled, ErrorLevel::Status);
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}
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ResultCode RenameFileBetweenArchives(Handle src_archive_handle, const FileSys::Path& src_path,
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Handle dest_archive_handle, const FileSys::Path& dest_path) {
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Archive* src_archive = Kernel::g_object_pool.GetFast<Archive>(src_archive_handle);
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Archive* dest_archive = Kernel::g_object_pool.GetFast<Archive>(dest_archive_handle);
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if (src_archive == nullptr || dest_archive == nullptr)
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return InvalidHandle(ErrorModule::FS);
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if (src_archive == dest_archive) {
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if (src_archive->backend->RenameFile(src_path, dest_path))
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return RESULT_SUCCESS;
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} else {
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// TODO: Implement renaming across archives
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return UnimplementedFunction(ErrorModule::FS);
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}
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return ResultCode(ErrorDescription::NoData, ErrorModule::FS, // TODO: verify description
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ErrorSummary::NothingHappened, ErrorLevel::Status);
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}
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ResultCode DeleteDirectoryFromArchive(Handle archive_handle, const FileSys::Path& path) {
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Archive* archive = Kernel::g_object_pool.GetFast<Archive>(archive_handle);
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if (archive == nullptr)
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return InvalidHandle(ErrorModule::FS);
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if (archive->backend->DeleteDirectory(path))
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return RESULT_SUCCESS;
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return ResultCode(ErrorDescription::NoData, ErrorModule::FS, // TODO: verify description
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ErrorSummary::Canceled, ErrorLevel::Status);
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}
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ResultCode CreateDirectoryFromArchive(Handle archive_handle, const FileSys::Path& path) {
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Archive* archive = Kernel::g_object_pool.GetFast<Archive>(archive_handle);
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if (archive == nullptr)
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return InvalidHandle(ErrorModule::FS);
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if (archive->backend->CreateDirectory(path))
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return RESULT_SUCCESS;
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return ResultCode(ErrorDescription::NoData, ErrorModule::FS, // TODO: verify description
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ErrorSummary::Canceled, ErrorLevel::Status);
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}
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ResultCode RenameDirectoryBetweenArchives(Handle src_archive_handle, const FileSys::Path& src_path,
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Handle dest_archive_handle, const FileSys::Path& dest_path) {
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Archive* src_archive = Kernel::g_object_pool.GetFast<Archive>(src_archive_handle);
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Archive* dest_archive = Kernel::g_object_pool.GetFast<Archive>(dest_archive_handle);
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if (src_archive == nullptr || dest_archive == nullptr)
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return InvalidHandle(ErrorModule::FS);
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if (src_archive == dest_archive) {
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if (src_archive->backend->RenameDirectory(src_path, dest_path))
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return RESULT_SUCCESS;
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} else {
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// TODO: Implement renaming across archives
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return UnimplementedFunction(ErrorModule::FS);
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}
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return ResultCode(ErrorDescription::NoData, ErrorModule::FS, // TODO: verify description
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ErrorSummary::NothingHappened, ErrorLevel::Status);
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}
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/**
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* Open a Directory from an Archive
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* @param archive_handle Handle to an open Archive object
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* @param path Path to the Directory inside of the Archive
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* @return Opened Directory object
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*/
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ResultVal<Handle> OpenDirectoryFromArchive(Handle archive_handle, const FileSys::Path& path) {
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Directory* directory = new Directory;
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Handle handle = Kernel::g_object_pool.Create(directory);
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Archive* archive = Kernel::g_object_pool.Get<Archive>(archive_handle);
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if (archive == nullptr) {
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return InvalidHandle(ErrorModule::FS);
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}
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directory->path = path;
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directory->backend = archive->backend->OpenDirectory(path);
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if (!directory->backend) {
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return ResultCode(ErrorDescription::NotFound, ErrorModule::FS,
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ErrorSummary::NotFound, ErrorLevel::Permanent);
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}
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return MakeResult<Handle>(handle);
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}
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/// Initialize archives
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void ArchiveInit() {
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g_archive_map.clear();
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// TODO(Link Mauve): Add the other archive types (see here for the known types:
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// http://3dbrew.org/wiki/FS:OpenArchive#Archive_idcodes). Currently the only half-finished
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// archive type is SDMC, so it is the only one getting exposed.
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std::string sdmc_directory = FileUtil::GetUserPath(D_SDMC_IDX);
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auto archive = new FileSys::Archive_SDMC(sdmc_directory);
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if (archive->Initialize())
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CreateArchive(archive, "SDMC");
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else
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LOG_ERROR(Service_FS, "Can't instantiate SDMC archive with path %s", sdmc_directory.c_str());
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}
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/// Shutdown archives
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void ArchiveShutdown() {
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g_archive_map.clear();
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}
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} // namespace Kernel
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