157 lines
4.7 KiB
C++
157 lines
4.7 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 "common/common_types.h"
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#include "core/file_sys/archive.h"
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#include "core/hle/service/service.h"
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#include "core/hle/kernel/kernel.h"
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#include "core/hle/kernel/archive.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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class Archive : public Object {
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public:
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const char* GetTypeName() const { return "Archive"; }
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const char* GetName() const { return name.c_str(); }
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static Kernel::HandleType GetStaticHandleType() { return HandleType::Archive; }
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Kernel::HandleType GetHandleType() const { return HandleType::Archive; }
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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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/**
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* Synchronize kernel object
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* @param wait Boolean wait set if current thread should wait as a result of sync operation
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* @return Result of operation, 0 on success, otherwise error code
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*/
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Result SyncRequest(bool* wait) {
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u32* cmd_buff = Service::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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cmd_buff[2] = backend->Read(offset, length, Memory::GetPointer(address));
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break;
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}
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// Unknown command...
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default:
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ERROR_LOG(KERNEL, "Unknown command=0x%08X!", cmd);
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return -1;
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}
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cmd_buff[1] = 0; // No error
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return 0;
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}
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/**
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* Wait for kernel object to synchronize
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* @param wait Boolean wait set if current thread should wait as a result of sync operation
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* @return Result of operation, 0 on success, otherwise error code
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*/
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Result WaitSynchronization(bool* wait) {
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// TODO(bunnei): ImplementMe
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ERROR_LOG(OSHLE, "(UNIMPLEMENTED)");
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return 0;
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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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/**
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* Opens an archive
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* @param id_code IdCode of the archive to open
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* @return Handle to archive if it exists, otherwise a null handle (0)
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*/
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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 0;
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}
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return itr->second;
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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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* @return Result of operation, 0 on success, otherwise error code
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*/
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Result MountArchive(Archive* archive) {
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FileSys::Archive::IdCode id_code = archive->backend->GetIdCode();
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if (0 != OpenArchive(id_code)) {
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ERROR_LOG(KERNEL, "Cannot mount two archives with the same ID code! (%d)", (int) id_code);
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return -1;
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}
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g_archive_map[id_code] = archive->GetHandle();
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INFO_LOG(KERNEL, "Mounted archive %s", archive->GetName());
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return 0;
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}
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/**
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* Creates an Archive
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* @param handle Handle to newly created archive object
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* @param backend File system backend interface to the archive
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* @param name Optional name of Archive
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* @return Newly created Archive object
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*/
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Archive* CreateArchive(Handle& handle, FileSys::Archive* backend, const std::string& name) {
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Archive* archive = new Archive;
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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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MountArchive(archive);
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return archive;
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}
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/**
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* Creates an Archive
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* @param backend File system backend interface to the archive
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* @param name Optional name of Archive
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* @return Handle to newly created Archive object
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*/
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Handle CreateArchive(FileSys::Archive* backend, const std::string& name) {
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Handle handle;
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Archive* archive = CreateArchive(handle, backend, name);
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return 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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}
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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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