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/service/fs/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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namespace Service {
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namespace FS {
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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 FS
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} // namespace Service
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