ryujinx/Ryujinx.HLE/HOS/Services/FspSrv/IFileSystem.cs

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using Ryujinx.HLE.FileSystem;
using Ryujinx.HLE.HOS.Ipc;
using System;
using System.Collections.Generic;
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using System.IO;
using static Ryujinx.HLE.HOS.ErrorCode;
using static Ryujinx.HLE.Utilities.StringUtils;
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namespace Ryujinx.HLE.HOS.Services.FspSrv
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{
class IFileSystem : IpcService
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{
private Dictionary<int, ServiceProcessRequest> _commands;
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public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => _commands;
private HashSet<string> _openPaths;
private string _path;
private IFileSystemProvider _provider;
public IFileSystem(string path, IFileSystemProvider provider)
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{
_commands = new Dictionary<int, ServiceProcessRequest>
{
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{ 0, CreateFile },
{ 1, DeleteFile },
{ 2, CreateDirectory },
{ 3, DeleteDirectory },
{ 4, DeleteDirectoryRecursively },
{ 5, RenameFile },
{ 6, RenameDirectory },
{ 7, GetEntryType },
{ 8, OpenFile },
{ 9, OpenDirectory },
{ 10, Commit },
{ 11, GetFreeSpaceSize },
{ 12, GetTotalSpaceSize },
{ 13, CleanDirectoryRecursively }
//{ 14, GetFileTimeStampRaw }
};
_openPaths = new HashSet<string>();
_path = path;
_provider = provider;
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}
// CreateFile(u32 mode, u64 size, buffer<bytes<0x301>, 0x19, 0x301> path)
public long CreateFile(ServiceCtx context)
{
string name = ReadUtf8String(context);
long mode = context.RequestData.ReadInt64();
int size = context.RequestData.ReadInt32();
string fileName = _provider.GetFullPath(name);
if (fileName == null)
{
return MakeError(ErrorModule.Fs, FsErr.PathDoesNotExist);
}
if (_provider.FileExists(fileName))
{
return MakeError(ErrorModule.Fs, FsErr.PathAlreadyExists);
}
if (IsPathAlreadyInUse(fileName))
{
return MakeError(ErrorModule.Fs, FsErr.PathAlreadyInUse);
}
return _provider.CreateFile(fileName, size);
}
// DeleteFile(buffer<bytes<0x301>, 0x19, 0x301> path)
public long DeleteFile(ServiceCtx context)
{
string name = ReadUtf8String(context);
string fileName = _provider.GetFullPath(name);
if (!_provider.FileExists(fileName))
{
return MakeError(ErrorModule.Fs, FsErr.PathDoesNotExist);
}
if (IsPathAlreadyInUse(fileName))
{
return MakeError(ErrorModule.Fs, FsErr.PathAlreadyInUse);
}
return _provider.DeleteFile(fileName);
}
// CreateDirectory(buffer<bytes<0x301>, 0x19, 0x301> path)
public long CreateDirectory(ServiceCtx context)
{
string name = ReadUtf8String(context);
string dirName = _provider.GetFullPath(name);
if (dirName == null)
{
return MakeError(ErrorModule.Fs, FsErr.PathDoesNotExist);
}
if (_provider.DirectoryExists(dirName))
{
return MakeError(ErrorModule.Fs, FsErr.PathAlreadyExists);
}
if (IsPathAlreadyInUse(dirName))
{
return MakeError(ErrorModule.Fs, FsErr.PathAlreadyInUse);
}
_provider.CreateDirectory(dirName);
return 0;
}
// DeleteDirectory(buffer<bytes<0x301>, 0x19, 0x301> path)
public long DeleteDirectory(ServiceCtx context)
{
return DeleteDirectory(context, false);
}
// DeleteDirectoryRecursively(buffer<bytes<0x301>, 0x19, 0x301> path)
public long DeleteDirectoryRecursively(ServiceCtx context)
{
return DeleteDirectory(context, true);
}
private long DeleteDirectory(ServiceCtx context, bool recursive)
{
string name = ReadUtf8String(context);
string dirName = _provider.GetFullPath(name);
if (!Directory.Exists(dirName))
{
return MakeError(ErrorModule.Fs, FsErr.PathDoesNotExist);
}
if (IsPathAlreadyInUse(dirName))
{
return MakeError(ErrorModule.Fs, FsErr.PathAlreadyInUse);
}
_provider.DeleteDirectory(dirName, recursive);
return 0;
}
// RenameFile(buffer<bytes<0x301>, 0x19, 0x301> oldPath, buffer<bytes<0x301>, 0x19, 0x301> newPath)
public long RenameFile(ServiceCtx context)
{
string oldName = ReadUtf8String(context, 0);
string newName = ReadUtf8String(context, 1);
string oldFileName = _provider.GetFullPath(oldName);
string newFileName = _provider.GetFullPath(newName);
if (_provider.FileExists(oldFileName))
{
return MakeError(ErrorModule.Fs, FsErr.PathDoesNotExist);
}
if (_provider.FileExists(newFileName))
{
return MakeError(ErrorModule.Fs, FsErr.PathAlreadyExists);
}
if (IsPathAlreadyInUse(oldFileName))
{
return MakeError(ErrorModule.Fs, FsErr.PathAlreadyInUse);
}
return _provider.RenameFile(oldFileName, newFileName);
}
// RenameDirectory(buffer<bytes<0x301>, 0x19, 0x301> oldPath, buffer<bytes<0x301>, 0x19, 0x301> newPath)
public long RenameDirectory(ServiceCtx context)
{
string oldName = ReadUtf8String(context, 0);
string newName = ReadUtf8String(context, 1);
string oldDirName = _provider.GetFullPath(oldName);
string newDirName = _provider.GetFullPath(newName);
if (!_provider.DirectoryExists(oldDirName))
{
return MakeError(ErrorModule.Fs, FsErr.PathDoesNotExist);
}
if (!_provider.DirectoryExists(newDirName))
{
return MakeError(ErrorModule.Fs, FsErr.PathAlreadyExists);
}
if (IsPathAlreadyInUse(oldDirName))
{
return MakeError(ErrorModule.Fs, FsErr.PathAlreadyInUse);
}
return _provider.RenameDirectory(oldDirName, newDirName);
}
// GetEntryType(buffer<bytes<0x301>, 0x19, 0x301> path) -> nn::fssrv::sf::DirectoryEntryType
public long GetEntryType(ServiceCtx context)
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{
string name = ReadUtf8String(context);
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string fileName = _provider.GetFullPath(name);
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if (_provider.FileExists(fileName))
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{
context.ResponseData.Write(1);
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}
else if (_provider.DirectoryExists(fileName))
{
context.ResponseData.Write(0);
}
else
{
context.ResponseData.Write(0);
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return MakeError(ErrorModule.Fs, FsErr.PathDoesNotExist);
}
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return 0;
}
// OpenFile(u32 mode, buffer<bytes<0x301>, 0x19, 0x301> path) -> object<nn::fssrv::sf::IFile> file
public long OpenFile(ServiceCtx context)
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{
int filterFlags = context.RequestData.ReadInt32();
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string name = ReadUtf8String(context);
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string fileName = _provider.GetFullPath(name);
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if (!_provider.FileExists(fileName))
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{
return MakeError(ErrorModule.Fs, FsErr.PathDoesNotExist);
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}
if (IsPathAlreadyInUse(fileName))
{
return MakeError(ErrorModule.Fs, FsErr.PathAlreadyInUse);
}
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long error = _provider.OpenFile(fileName, out IFile fileInterface);
if (error == 0)
{
fileInterface.Disposed += RemoveFileInUse;
lock (_openPaths)
{
_openPaths.Add(fileName);
}
MakeObject(context, fileInterface);
return 0;
}
return error;
}
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// OpenDirectory(u32 filter_flags, buffer<bytes<0x301>, 0x19, 0x301> path) -> object<nn::fssrv::sf::IDirectory> directory
public long OpenDirectory(ServiceCtx context)
{
int filterFlags = context.RequestData.ReadInt32();
string name = ReadUtf8String(context);
string dirName = _provider.GetFullPath(name);
if (!_provider.DirectoryExists(dirName))
{
return MakeError(ErrorModule.Fs, FsErr.PathDoesNotExist);
}
if (IsPathAlreadyInUse(dirName))
{
return MakeError(ErrorModule.Fs, FsErr.PathAlreadyInUse);
}
long error = _provider.OpenDirectory(dirName, filterFlags, out IDirectory dirInterface);
if (error == 0)
{
dirInterface.Disposed += RemoveDirectoryInUse;
lock (_openPaths)
{
_openPaths.Add(dirName);
}
MakeObject(context, dirInterface);
}
return error;
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}
// Commit()
public long Commit(ServiceCtx context)
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{
return 0;
}
// GetFreeSpaceSize(buffer<bytes<0x301>, 0x19, 0x301> path) -> u64 totalFreeSpace
public long GetFreeSpaceSize(ServiceCtx context)
{
string name = ReadUtf8String(context);
context.ResponseData.Write(_provider.GetFreeSpace(context));
return 0;
}
// GetTotalSpaceSize(buffer<bytes<0x301>, 0x19, 0x301> path) -> u64 totalSize
public long GetTotalSpaceSize(ServiceCtx context)
{
string name = ReadUtf8String(context);
context.ResponseData.Write(_provider.GetFreeSpace(context));
return 0;
}
// CleanDirectoryRecursively(buffer<bytes<0x301>, 0x19, 0x301> path)
public long CleanDirectoryRecursively(ServiceCtx context)
{
string name = ReadUtf8String(context);
string dirName = _provider.GetFullPath(name);
if (!_provider.DirectoryExists(dirName))
{
return MakeError(ErrorModule.Fs, FsErr.PathDoesNotExist);
}
if (IsPathAlreadyInUse(dirName))
{
return MakeError(ErrorModule.Fs, FsErr.PathAlreadyInUse);
}
foreach (DirectoryEntry entry in _provider.GetEntries(dirName))
{
if (_provider.DirectoryExists(entry.Path))
{
_provider.DeleteDirectory(entry.Path, true);
}
else if (_provider.FileExists(entry.Path))
{
_provider.DeleteFile(entry.Path);
}
}
return 0;
}
private bool IsPathAlreadyInUse(string path)
{
lock (_openPaths)
{
return _openPaths.Contains(path);
}
}
private void RemoveFileInUse(object sender, EventArgs e)
{
IFile fileInterface = (IFile)sender;
lock (_openPaths)
{
fileInterface.Disposed -= RemoveFileInUse;
_openPaths.Remove(fileInterface.HostPath);
}
}
private void RemoveDirectoryInUse(object sender, EventArgs e)
{
IDirectory dirInterface = (IDirectory)sender;
lock (_openPaths)
{
dirInterface.Disposed -= RemoveDirectoryInUse;
_openPaths.Remove(dirInterface.DirectoryPath);
}
}
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}
}