void CFileSystemGCWii::InitFileSystem()
{
m_Initialized = true;
u32 const shift = GetOffsetShift();
// read the whole FST
u32 fst_offset_unshifted;
if (!m_rVolume->ReadSwapped(0x424, &fst_offset_unshifted, m_Wii))
return;
u64 FSTOffset = static_cast<u64>(fst_offset_unshifted) << shift;
// read all fileinfos
u32 name_offset, offset, size;
if (!m_rVolume->ReadSwapped(FSTOffset + 0x0, &name_offset, m_Wii) ||
!m_rVolume->ReadSwapped(FSTOffset + 0x4, &offset, m_Wii) ||
!m_rVolume->ReadSwapped(FSTOffset + 0x8, &size, m_Wii))
return;
SFileInfo root = {name_offset, static_cast<u64>(offset) << shift, size};
if (!root.IsDirectory())
return;
// 12 bytes (the size of a file entry) times 10 * 1024 * 1024 is 120 MiB,
// more than total RAM in a Wii. No file system should use anywhere near that much.
static const u32 ARBITRARY_FILE_SYSTEM_SIZE_LIMIT = 10 * 1024 * 1024;
if (root.m_FileSize > ARBITRARY_FILE_SYSTEM_SIZE_LIMIT)
{
// Without this check, Dolphin can crash by trying to allocate too much
// memory when loading the file systems of certain malformed disc images.
ERROR_LOG(DISCIO, "File system is abnormally large! Aborting loading");
return;
}
if (m_FileInfoVector.size())
PanicAlert("Wtf?");
u64 NameTableOffset = FSTOffset;
m_FileInfoVector.reserve((size_t)root.m_FileSize);
for (u32 i = 0; i < root.m_FileSize; i++)
{
const u64 read_offset = FSTOffset + (i * 0xC);
name_offset = 0;
m_rVolume->ReadSwapped(read_offset + 0x0, &name_offset, m_Wii);
offset = 0;
m_rVolume->ReadSwapped(read_offset + 0x4, &offset, m_Wii);
size = 0;
m_rVolume->ReadSwapped(read_offset + 0x8, &size, m_Wii);
m_FileInfoVector.emplace_back(name_offset, static_cast<u64>(offset) << shift, size);
NameTableOffset += 0xC;
}
BuildFilenames(1, m_FileInfoVector.size(), "", NameTableOffset);
}
bool CFileSystemGCWii::ExportDOL(const std::string& _rExportFolder) const
{
u32 DolOffset = m_rVolume->Read32(0x420, m_Wii) << GetOffsetShift();
u32 DolSize = GetBootDOLSize();
std::vector<u8> buffer(DolSize);
if (m_rVolume->Read(DolOffset, DolSize, &buffer[0], m_Wii))
{
std::string exportName(_rExportFolder + "/boot.dol");
File::IOFile DolFile(exportName, "wb");
if (DolFile)
{
DolFile.WriteBytes(&buffer[0], DolSize);
return true;
}
}
return false;
}
bool CFileSystemGCWii::GetBootDOL(u8* &buffer, u32 DolSize) const
{
char filePathNew[512];
strcpy((char*)&filePathNew, "ISO/&&systemdata/Start.dol");
if (access((char*)&filePathNew, 0) != -1)
{
FILE* newFile = fopen((char*)&filePathNew, "rb");
u64 fileRelOffset = 0;
WARN_LOG(VIDEO, "Loading custom DOL file from ISO/&&systemData/Start.dol");
if (newFile)
{
// Get file size
fseek(newFile, 0, SEEK_END);
int fileSize = ftell(newFile);
fseek(newFile, 0, SEEK_SET);
fseek(newFile, (long)fileRelOffset, SEEK_SET);
if ((int)DolSize > fileSize)
{
fread(buffer, fileSize, 1, newFile);
}
else
{
fread(buffer, DolSize, 1, newFile);
}
}
fclose(newFile);
return true;
}
u32 DolOffset = m_rVolume->Read32(0x420, m_Wii) << GetOffsetShift();
return m_rVolume->Read(DolOffset, DolSize, buffer, m_Wii);
}
void CFileSystemGCWii::InitFileSystem()
{
m_Initialized = true;
u32 const shift = GetOffsetShift();
// read the whole FST
u64 FSTOffset = static_cast<u64>(m_rVolume->Read32(0x424, m_Wii)) << shift;
// u32 FSTSize = Read32(0x428);
// u32 FSTMaxSize = Read32(0x42C);
// read all fileinfos
SFileInfo Root
{
m_rVolume->Read32(FSTOffset + 0x0, m_Wii),
static_cast<u64>(FSTOffset + 0x4) << shift,
m_rVolume->Read32(FSTOffset + 0x8, m_Wii)
};
if (!Root.IsDirectory())
return;
if (m_FileInfoVector.size())
PanicAlert("Wtf?");
u64 NameTableOffset = FSTOffset;
m_FileInfoVector.reserve((size_t)Root.m_FileSize);
for (u32 i = 0; i < Root.m_FileSize; i++)
{
u64 const read_offset = FSTOffset + (i * 0xC);
u64 const name_offset = m_rVolume->Read32(read_offset + 0x0, m_Wii);
u64 const offset = static_cast<u64>(m_rVolume->Read32(read_offset + 0x4, m_Wii)) << shift;
u64 const size = m_rVolume->Read32(read_offset + 0x8, m_Wii);
m_FileInfoVector.emplace_back(name_offset, offset, size);
NameTableOffset += 0xC;
}
BuildFilenames(1, m_FileInfoVector.size(), "", NameTableOffset);
}
u32 CFileSystemGCWii::GetBootDOLSize() const
{
return GetBootDOLSize((u64)m_rVolume->Read32(0x420, m_Wii) << GetOffsetShift());
}
u64 CFileSystemGCWii::GetBootDOLOffset() const
{
u32 offset = 0;
m_rVolume->ReadSwapped(0x420, &offset, m_Wii);
return static_cast<u64>(offset) << GetOffsetShift();
}