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ryujinx-fork/Ryujinx.HLE/HOS/Services/Fs/FileSystemProxy/FileSystemProxyHelper.cs
gdkchan f77694e4f7
Implement a new physical memory manager and replace DeviceMemory (#856)
* Implement a new physical memory manager and replace DeviceMemory

* Proper generic constraints

* Fix debug build

* Add memory tests

* New CPU memory manager and general code cleanup

* Remove host memory management from CPU project, use Ryujinx.Memory instead

* Fix tests

* Document exceptions on MemoryBlock

* Fix leak on unix memory allocation

* Proper disposal of some objects on tests

* Fix JitCache not being set as initialized

* GetRef without checks for 8-bits and 16-bits CAS

* Add MemoryBlock destructor

* Throw in separate method to improve codegen

* Address PR feedback

* QueryModified improvements

* Fix memory write tracking not marking all pages as modified in some cases

* Simplify MarkRegionAsModified

* Remove XML doc for ghost param

* Add back optimization to avoid useless buffer updates

* Add Ryujinx.Cpu project, move MemoryManager there and remove MemoryBlockWrapper

* Some nits

* Do not perform address translation when size is 0

* Address PR feedback and format NativeInterface class

* Remove ghost parameter description

* Update Ryujinx.Cpu to .NET Core 3.1

* Address PR feedback

* Fix build

* Return a well defined value for GetPhysicalAddress with invalid VA, and do not return unmapped ranges as modified

* Typo
2020-05-04 08:54:50 +10:00

129 lines
4.4 KiB
C#

using LibHac;
using LibHac.Common;
using LibHac.Fs;
using LibHac.FsSystem;
using LibHac.FsSystem.NcaUtils;
using LibHac.Spl;
using System.IO;
namespace Ryujinx.HLE.HOS.Services.Fs.FileSystemProxy
{
static class FileSystemProxyHelper
{
public static ResultCode OpenNsp(ServiceCtx context, string pfsPath, out IFileSystem openedFileSystem)
{
openedFileSystem = null;
try
{
LocalStorage storage = new LocalStorage(pfsPath, FileAccess.Read, FileMode.Open);
PartitionFileSystem nsp = new PartitionFileSystem(storage);
ImportTitleKeysFromNsp(nsp, context.Device.System.KeySet);
openedFileSystem = new IFileSystem(nsp);
}
catch (HorizonResultException ex)
{
return (ResultCode)ex.ResultValue.Value;
}
return ResultCode.Success;
}
public static ResultCode OpenNcaFs(ServiceCtx context, string ncaPath, LibHac.Fs.IStorage ncaStorage, out IFileSystem openedFileSystem)
{
openedFileSystem = null;
try
{
Nca nca = new Nca(context.Device.System.KeySet, ncaStorage);
if (!nca.SectionExists(NcaSectionType.Data))
{
return ResultCode.PartitionNotFound;
}
LibHac.Fs.IFileSystem fileSystem = nca.OpenFileSystem(NcaSectionType.Data, context.Device.System.FsIntegrityCheckLevel);
openedFileSystem = new IFileSystem(fileSystem);
}
catch (HorizonResultException ex)
{
return (ResultCode)ex.ResultValue.Value;
}
return ResultCode.Success;
}
public static ResultCode OpenFileSystemFromInternalFile(ServiceCtx context, string fullPath, out IFileSystem openedFileSystem)
{
openedFileSystem = null;
DirectoryInfo archivePath = new DirectoryInfo(fullPath).Parent;
while (string.IsNullOrWhiteSpace(archivePath.Extension))
{
archivePath = archivePath.Parent;
}
if (archivePath.Extension == ".nsp" && File.Exists(archivePath.FullName))
{
FileStream pfsFile = new FileStream(
archivePath.FullName.TrimEnd(Path.DirectorySeparatorChar),
FileMode.Open,
FileAccess.Read);
try
{
PartitionFileSystem nsp = new PartitionFileSystem(pfsFile.AsStorage());
ImportTitleKeysFromNsp(nsp, context.Device.System.KeySet);
string filename = fullPath.Replace(archivePath.FullName, string.Empty).TrimStart('\\');
Result result = nsp.OpenFile(out LibHac.Fs.IFile ncaFile, filename.ToU8Span(), OpenMode.Read);
if (result.IsFailure())
{
return (ResultCode)result.Value;
}
return OpenNcaFs(context, fullPath, ncaFile.AsStorage(), out openedFileSystem);
}
catch (HorizonResultException ex)
{
return (ResultCode)ex.ResultValue.Value;
}
}
return ResultCode.PathDoesNotExist;
}
public static void ImportTitleKeysFromNsp(LibHac.Fs.IFileSystem nsp, Keyset keySet)
{
foreach (DirectoryEntryEx ticketEntry in nsp.EnumerateEntries("/", "*.tik"))
{
Result result = nsp.OpenFile(out LibHac.Fs.IFile ticketFile, ticketEntry.FullPath.ToU8Span(), OpenMode.Read);
if (result.IsSuccess())
{
Ticket ticket = new Ticket(ticketFile.AsStream());
keySet.ExternalKeySet.Add(new RightsId(ticket.RightsId), new AccessKey(ticket.GetTitleKey(keySet)));
}
}
}
public static Result ReadFsPath(out FsPath path, ServiceCtx context, int index = 0)
{
long position = context.Request.PtrBuff[index].Position;
long size = context.Request.PtrBuff[index].Size;
byte[] pathBytes = new byte[size];
context.Memory.Read((ulong)position, pathBytes);
return FsPath.FromSpan(out path, pathBytes);
}
}
}