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[FS] Add GetFormatInfo

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wheremyfoodat 2023-03-19 09:33:21 +02:00
parent c8cc8a2520
commit 0d6082e241
3 changed files with 38 additions and 1 deletions
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14
include/fs/archive_base.hpp
View file

@ -127,11 +127,18 @@ enum class DeleteFileResult : u32 {
};
class ArchiveBase {
public:
struct FormatInfo {
u32 size; // Archive size
u32 numOfDirectories; // Number of directories
u32 numOfFiles; // Number of files
bool duplicateData; // Whether to duplicate data or not
};
protected:
using Handle = u32;
static constexpr FileDescriptor NoFile = nullptr;
static constexpr FileDescriptor FileError = std::nullopt;
Memory& mem;
// Returns if a specified 3DS path in UTF16 or ASCII format is safe or not
@ -184,6 +191,11 @@ public:
virtual u64 getFreeBytes() = 0;
virtual CreateFileResult createFile(const FSPath& path, u64 size) = 0;
virtual DeleteFileResult deleteFile(const FSPath& path) = 0;
virtual FormatInfo getFormatInfo(const FSPath& path) {
Helpers::panic("Unimplemented GetFormatInfo for %s archive", name().c_str());
// Return a dummy struct just to avoid the UB of not returning anything, even if we panic
return FormatInfo{ .size = 0, .numOfDirectories = 0, .numOfFiles = 0, .duplicateData = false };
}
// Returns nullopt if opening the file failed, otherwise returns a file descriptor to it (nullptr if none is needed)
virtual FileDescriptor openFile(const FSPath& path, const FilePerms& perms) = 0;

1
include/services/fs.hpp
View file

@ -35,6 +35,7 @@ class FSService {
void createFile(u32 messagePointer);
void closeArchive(u32 messagePointer);
void deleteFile(u32 messagePointer);
void getFormatInfo(u32 messagePointer);
void getPriority(u32 messagePointer);
void initialize(u32 messagePointer);
void initializeWithSdkVersion(u32 messagePointer);

24
src/core/services/fs.cpp
View file

@ -17,6 +17,7 @@ namespace FSCommands {
OpenArchive = 0x080C00C2,
CloseArchive = 0x080E0080,
IsSdmcDetected = 0x08170000,
GetFormatInfo = 0x084500C2,
InitializeWithSdkVersion = 0x08610042,
SetPriority = 0x08620040,
GetPriority = 0x08630000
@ -115,6 +116,7 @@ void FSService::handleSyncRequest(u32 messagePointer) {
case FSCommands::CreateFile: createFile(messagePointer); break;
case FSCommands::CloseArchive: closeArchive(messagePointer); break;
case FSCommands::DeleteFile: deleteFile(messagePointer); break;
case FSCommands::GetFormatInfo: getFormatInfo(messagePointer); break;
case FSCommands::GetPriority: getPriority(messagePointer); break;
case FSCommands::Initialize: initialize(messagePointer); break;
case FSCommands::InitializeWithSdkVersion: initializeWithSdkVersion(messagePointer); break;
@ -288,6 +290,28 @@ void FSService::deleteFile(u32 messagePointer) {
mem.write32(messagePointer + 4, static_cast<u32>(res));
}
void FSService::getFormatInfo(u32 messagePointer) {
const u32 archiveID = mem.read32(messagePointer + 4);
const u32 pathType = mem.read32(messagePointer + 8);
const u32 pathSize = mem.read32(messagePointer + 12);
const u32 pathPointer = mem.read32(messagePointer + 20);
const auto path = readPath(pathType, pathPointer, pathSize);
log("FS::GetFormatInfo(archive ID = %d, archive path type = %d)\n", archiveID, pathType);
ArchiveBase* archive = getArchiveFromID(archiveID);
if (archive == nullptr) [[unlikely]] {
Helpers::panic("OpenArchive: Tried to open unknown archive %d.", archiveID);
}
ArchiveBase::FormatInfo info = archive->getFormatInfo(path);
mem.write32(messagePointer + 4, Result::Success);
mem.write32(messagePointer + 8, info.size);
mem.write32(messagePointer + 12, info.numOfDirectories);
mem.write32(messagePointer + 16, info.numOfFiles);
mem.write8(messagePointer + 20, info.duplicateData ? 1 : 0);
}
void FSService::getPriority(u32 messagePointer) {
log("FS::GetPriority\n");