R/Ryujinx/OsHle/Objects/FspSrv/IStorage.cs

52 lines
No EOL
1.4 KiB
C#

using ChocolArm64.Memory;
using Ryujinx.OsHle.Ipc;
using System.Collections.Generic;
using System.IO;
namespace Ryujinx.OsHle.Objects.FspSrv
{
class IStorage : IIpcInterface
{
private Dictionary<int, ServiceProcessRequest> m_Commands;
public IReadOnlyDictionary<int, ServiceProcessRequest> Commands => m_Commands;
private Stream BaseStream;
public IStorage(Stream BaseStream)
{
m_Commands = new Dictionary<int, ServiceProcessRequest>()
{
{ 0, Read }
};
this.BaseStream = BaseStream;
}
public long Read(ServiceCtx Context)
{
long Offset = Context.RequestData.ReadInt64();
long Size = Context.RequestData.ReadInt64();
if (Context.Request.ReceiveBuff.Count > 0)
{
IpcBuffDesc BuffDesc = Context.Request.ReceiveBuff[0];
//Use smaller length to avoid overflows.
if (Size > BuffDesc.Size)
{
Size = BuffDesc.Size;
}
byte[] Data = new byte[Size];
BaseStream.Seek(Offset, SeekOrigin.Begin);
BaseStream.Read(Data, 0, Data.Length);
AMemoryHelper.WriteBytes(Context.Memory, BuffDesc.Position, Data);
}
return 0;
}
}
}