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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include "common/common_types.h"
#include "core/file_sys/archive.h"
#include "core/hle/service/service.h"
#include "core/hle/kernel/kernel.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,
};
class Archive : public Object {
public:
const char* GetTypeName() const { return "Archive"; }
const char* GetName() const { return name.c_str(); }
static Kernel::HandleType GetStaticHandleType() { return HandleType::Archive; }
Kernel::HandleType GetHandleType() const { 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) {
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];
cmd_buff[2] = backend->Read(offset, length, Memory::GetPointer(address));
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) {
// 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;
}
/**
* 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());
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;
Archive* archive = CreateArchive(handle, backend, name);
return handle;
}
} // namespace Kernel
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