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ryujinx-fork/Ryujinx.HLE/HOS/Services/Fs/FileSystemProxy/IDirectory.cs
gdkchan 60e16c15b6
Fix memory corruption in BCAT and FS Read methods when buffer is larger than needed (#3739)
* Fix memory corruption in FS Read methods when buffer is larger than needed

* PR feedback

* nit: Don't move this around
2022-10-04 20:12:54 -03:00

52 lines
1.6 KiB
C#

using LibHac;
using LibHac.Common;
using LibHac.Sf;
namespace Ryujinx.HLE.HOS.Services.Fs.FileSystemProxy
{
class IDirectory : DisposableIpcService
{
private SharedRef<LibHac.FsSrv.Sf.IDirectory> _baseDirectory;
public IDirectory(ref SharedRef<LibHac.FsSrv.Sf.IDirectory> directory)
{
_baseDirectory = SharedRef<LibHac.FsSrv.Sf.IDirectory>.CreateMove(ref directory);
}
[CommandHipc(0)]
// Read() -> (u64 count, buffer<nn::fssrv::sf::IDirectoryEntry, 6, 0> entries)
public ResultCode Read(ServiceCtx context)
{
ulong bufferAddress = context.Request.ReceiveBuff[0].Position;
ulong bufferLen = context.Request.ReceiveBuff[0].Size;
using (var region = context.Memory.GetWritableRegion(bufferAddress, (int)bufferLen, true))
{
Result result = _baseDirectory.Get.Read(out long entriesRead, new OutBuffer(region.Memory.Span));
context.ResponseData.Write(entriesRead);
return (ResultCode)result.Value;
}
}
[CommandHipc(1)]
// GetEntryCount() -> u64
public ResultCode GetEntryCount(ServiceCtx context)
{
Result result = _baseDirectory.Get.GetEntryCount(out long entryCount);
context.ResponseData.Write(entryCount);
return (ResultCode)result.Value;
}
protected override void Dispose(bool isDisposing)
{
if (isDisposing)
{
_baseDirectory.Destroy();
}
}
}
}