// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include "common/common_types.h"
#include "common/file_util.h"
#include "common/math_util.h"
#include "core/file_sys/archive.h"
#include "core/file_sys/archive_sdmc.h"
#include "core/file_sys/directory.h"
#include "core/hle/service/service.h"
#include "core/hle/kernel/archive.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// Kernel namespace
namespace Kernel {
// Command to access archive file
enum class FileCommand : u32 {
Dummy1 = 0x000100C6,
Control = 0x040100C4,
OpenSubFile = 0x08010100,
Read = 0x080200C2,
Write = 0x08030102,
GetSize = 0x08040000,
SetSize = 0x08050080,
GetAttributes = 0x08060000,
SetAttributes = 0x08070040,
Close = 0x08080000,
Flush = 0x08090000,
};
// Command to access directory
enum class DirectoryCommand : u32 {
Dummy1 = 0x000100C6,
Control = 0x040100C4,
Read = 0x08010042,
Close = 0x08020000,
};
class Archive : public Object {
public:
std::string GetTypeName() const override { return "Archive"; }
std::string GetName() const override { return name; }
static Kernel::HandleType GetStaticHandleType() { return HandleType::Archive; }
Kernel::HandleType GetHandleType() const override { return HandleType::Archive; }
std::string name; ///< Name of archive (optional)
FileSys::Archive* backend; ///< Archive backend interface
/**
* Synchronize kernel object
* @param wait Boolean wait set if current thread should wait as a result of sync operation
* @return Result of operation, 0 on success, otherwise error code
*/
Result SyncRequest(bool* wait) override {
u32* cmd_buff = Service::GetCommandBuffer();
FileCommand cmd = static_cast<FileCommand>(cmd_buff[0]);
switch (cmd) {
// Read from archive...
case FileCommand::Read:
{
u64 offset = cmd_buff[1] | ((u64)cmd_buff[2] << 32);
u32 length = cmd_buff[3];
u32 address = cmd_buff[5];
// Number of bytes read
cmd_buff[2] = backend->Read(offset, length, Memory::GetPointer(address));
break;
}
// Write to archive...
case FileCommand::Write:
{
u64 offset = cmd_buff[1] | ((u64)cmd_buff[2] << 32);
u32 length = cmd_buff[3];
u32 flush = cmd_buff[4];
u32 address = cmd_buff[6];
// Number of bytes written
cmd_buff[2] = backend->Write(offset, length, flush, Memory::GetPointer(address));
break;
}
case FileCommand::GetSize:
{
u64 filesize = (u64) backend->GetSize();
cmd_buff[2] = (u32) filesize; // Lower word
cmd_buff[3] = (u32) (filesize >> 32); // Upper word
break;
}
case FileCommand::SetSize:
{
backend->SetSize(cmd_buff[1] | ((u64)cmd_buff[2] << 32));
break;
}
case FileCommand::Close:
{
DEBUG_LOG(KERNEL, "Close %s %s", GetTypeName().c_str(), GetName().c_str());
Kernel::g_object_pool.Destroy<Archive>(GetHandle());
CloseArchive(backend->GetIdCode());
break;
}
// Unknown command...
default:
{
ERROR_LOG(KERNEL, "Unknown command=0x%08X!", cmd);
return -1;
}
}
cmd_buff[1] = 0; // No error
return 0;
}
/**
* Wait for kernel object to synchronize
* @param wait Boolean wait set if current thread should wait as a result of sync operation
* @return Result of operation, 0 on success, otherwise error code
*/
Result WaitSynchronization(bool* wait) override {
// TODO(bunnei): ImplementMe
ERROR_LOG(OSHLE, "(UNIMPLEMENTED)");
return 0;
}
};
class File : public Object {
public:
std::string GetTypeName() const override { return "File"; }
std::string GetName() const override { return path; }
static Kernel::HandleType GetStaticHandleType() { return HandleType::File; }
Kernel::HandleType GetHandleType() const override { return HandleType::File; }
std::string path; ///< Path of the file
std::unique_ptr<FileSys::File> backend; ///< File backend interface
/**
* Synchronize kernel object
* @param wait Boolean wait set if current thread should wait as a result of sync operation
* @return Result of operation, 0 on success, otherwise error code
*/
Result SyncRequest(bool* wait) override {
u32* cmd_buff = Service::GetCommandBuffer();
FileCommand cmd = static_cast<FileCommand>(cmd_buff[0]);
switch (cmd) {
// Read from file...
case FileCommand::Read:
{
u64 offset = cmd_buff[1] | ((u64) cmd_buff[2]) << 32;
u32 length = cmd_buff[3];
u32 address = cmd_buff[5];
DEBUG_LOG(KERNEL, "Read %s %s: offset=0x%llx length=%d address=0x%x",
GetTypeName().c_str(), GetName().c_str(), offset, length, address);
cmd_buff[2] = backend->Read(offset, length, Memory::GetPointer(address));
break;
}
// Write to file...
case FileCommand::Write:
{
u64 offset = cmd_buff[1] | ((u64) cmd_buff[2]) << 32;
u32 length = cmd_buff[3];
u32 flush = cmd_buff[4];
u32 address = cmd_buff[6];
DEBUG_LOG(KERNEL, "Write %s %s: offset=0x%llx length=%d address=0x%x, flush=0x%x",
GetTypeName().c_str(), GetName().c_str(), offset, length, address, flush);
cmd_buff[2] = backend->Write(offset, length, flush, Memory::GetPointer(address));
break;
}
case FileCommand::GetSize:
{
DEBUG_LOG(KERNEL, "GetSize %s %s", GetTypeName().c_str(), GetName().c_str());
u64 size = backend->GetSize();
cmd_buff[2] = (u32)size;
cmd_buff[3] = size >> 32;
break;
}
case FileCommand::SetSize:
{
u64 size = cmd_buff[1] | ((u64)cmd_buff[2] << 32);
DEBUG_LOG(KERNEL, "SetSize %s %s size=%llu", GetTypeName().c_str(), GetName().c_str(), size);
backend->SetSize(size);
break;
}
case FileCommand::Close:
{
DEBUG_LOG(KERNEL, "Close %s %s", GetTypeName().c_str(), GetName().c_str());
Kernel::g_object_pool.Destroy<File>(GetHandle());
break;
}
// Unknown command...
default:
ERROR_LOG(KERNEL, "Unknown command=0x%08X!", cmd);
cmd_buff[1] = -1; // TODO(Link Mauve): use the correct error code for that.
return -1;
}
cmd_buff[1] = 0; // No error
return 0;
}
/**
* Wait for kernel object to synchronize
* @param wait Boolean wait set if current thread should wait as a result of sync operation
* @return Result of operation, 0 on success, otherwise error code
*/
Result WaitSynchronization(bool* wait) override {
// TODO(bunnei): ImplementMe
ERROR_LOG(OSHLE, "(UNIMPLEMENTED)");
return 0;
}
};
class Directory : public Object {
public:
std::string GetTypeName() const override { return "Directory"; }
std::string GetName() const override { return path; }
static Kernel::HandleType GetStaticHandleType() { return HandleType::Directory; }
Kernel::HandleType GetHandleType() const override { return HandleType::Directory; }
std::string path; ///< Path of the directory
std::unique_ptr<FileSys::Directory> backend; ///< File backend interface
/**
* Synchronize kernel object
* @param wait Boolean wait set if current thread should wait as a result of sync operation
* @return Result of operation, 0 on success, otherwise error code
*/
Result SyncRequest(bool* wait) override {
u32* cmd_buff = Service::GetCommandBuffer();
DirectoryCommand cmd = static_cast<DirectoryCommand>(cmd_buff[0]);
switch (cmd) {
// Read from directory...
case DirectoryCommand::Read:
{
u32 count = cmd_buff[1];
u32 address = cmd_buff[3];
FileSys::Entry* entries = reinterpret_cast<FileSys::Entry*>(Memory::GetPointer(address));
DEBUG_LOG(KERNEL, "Read %s %s: count=%d", GetTypeName().c_str(), GetName().c_str(), count);
// Number of entries actually read
cmd_buff[2] = backend->Read(count, entries);
break;
}
case DirectoryCommand::Close:
{
DEBUG_LOG(KERNEL, "Close %s %s", GetTypeName().c_str(), GetName().c_str());
Kernel::g_object_pool.Destroy<Directory>(GetHandle());
break;
}
// Unknown command...
default:
ERROR_LOG(KERNEL, "Unknown command=0x%08X!", cmd);
cmd_buff[1] = -1; // TODO(Link Mauve): use the correct error code for that.
return -1;
}
cmd_buff[1] = 0; // No error
return 0;
}
/**
* Wait for kernel object to synchronize
* @param wait Boolean wait set if current thread should wait as a result of sync operation
* @return Result of operation, 0 on success, otherwise error code
*/
Result WaitSynchronization(bool* wait) override {
// TODO(bunnei): ImplementMe
ERROR_LOG(OSHLE, "(UNIMPLEMENTED)");
return 0;
}
};
////////////////////////////////////////////////////////////////////////////////////////////////////
std::map<FileSys::Archive::IdCode, Handle> g_archive_map; ///< Map of file archives by IdCode
/**
* Opens an archive
* @param id_code IdCode of the archive to open
* @return Handle to archive if it exists, otherwise a null handle (0)
*/
Handle OpenArchive(FileSys::Archive::IdCode id_code) {
auto itr = g_archive_map.find(id_code);
if (itr == g_archive_map.end()) {
return 0;
}
return itr->second;
}
/**
* Closes an archive
* @param id_code IdCode of the archive to open
* @return Result of operation, 0 on success, otherwise error code
*/
Result CloseArchive(FileSys::Archive::IdCode id_code) {
if (1 != g_archive_map.erase(id_code)) {
ERROR_LOG(KERNEL, "Cannot close archive %d", (int) id_code);
return -1;
}
INFO_LOG(KERNEL, "Closed archive %d", (int) id_code);
return 0;
}
/**
* Mounts an archive
* @param archive Pointer to the archive to mount
* @return Result of operation, 0 on success, otherwise error code
*/
Result MountArchive(Archive* archive) {
FileSys::Archive::IdCode id_code = archive->backend->GetIdCode();
if (0 != OpenArchive(id_code)) {
ERROR_LOG(KERNEL, "Cannot mount two archives with the same ID code! (%d)", (int) id_code);
return -1;
}
g_archive_map[id_code] = archive->GetHandle();
INFO_LOG(KERNEL, "Mounted archive %s", archive->GetName().c_str());
return 0;
}
/**
* Creates an Archive
* @param handle Handle to newly created archive object
* @param backend File system backend interface to the archive
* @param name Optional name of Archive
* @return Newly created Archive object
*/
Archive* CreateArchive(Handle& handle, FileSys::Archive* backend, const std::string& name) {
Archive* archive = new Archive;
handle = Kernel::g_object_pool.Create(archive);
archive->name = name;
archive->backend = backend;
MountArchive(archive);
return archive;
}
/**
* Creates an Archive
* @param backend File system backend interface to the archive
* @param name Optional name of Archive
* @return Handle to newly created Archive object
*/
Handle CreateArchive(FileSys::Archive* backend, const std::string& name) {
Handle handle;
CreateArchive(handle, backend, name);
return handle;
}
/**
* Open a File from an Archive
* @param archive_handle Handle to an open Archive object
* @param path Path to the File inside of the Archive
* @param mode Mode under which to open the File
* @return Opened File object
*/
Handle OpenFileFromArchive(Handle archive_handle, const std::string& path, const FileSys::Mode mode) {
File* file = new File;
Handle handle = Kernel::g_object_pool.Create(file);
Archive* archive = Kernel::g_object_pool.GetFast<Archive>(archive_handle);
file->path = path;
file->backend = archive->backend->OpenFile(path, mode);
if (!file->backend)
return 0;
return handle;
}
/**
* Open a Directory from an Archive
* @param archive_handle Handle to an open Archive object
* @param path Path to the Directory inside of the Archive
* @return Opened Directory object
*/
Handle OpenDirectoryFromArchive(Handle archive_handle, const std::string& path) {
Directory* directory = new Directory;
Handle handle = Kernel::g_object_pool.Create(directory);
Archive* archive = Kernel::g_object_pool.GetFast<Archive>(archive_handle);
directory->path = path;
directory->backend = archive->backend->OpenDirectory(path);
return handle;
}
/// Initialize archives
void ArchiveInit() {
g_archive_map.clear();
// TODO(Link Mauve): Add the other archive types (see here for the known types:
// http://3dbrew.org/wiki/FS:OpenArchive#Archive_idcodes). Currently the only half-finished
// archive type is SDMC, so it is the only one getting exposed.
std::string sdmc_directory = FileUtil::GetUserPath(D_SDMC_IDX);
auto archive = new FileSys::Archive_SDMC(sdmc_directory);
if (archive->Initialize())
CreateArchive(archive, "SDMC");
else
ERROR_LOG(KERNEL, "Can't instantiate SDMC archive with path %s", sdmc_directory.c_str());
}
/// Shutdown archives
void ArchiveShutdown() {
g_archive_map.clear();
}
} // namespace Kernel
