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using System;
namespace Ryujinx.HLE.HOS.Services.Am.AppletAE
{
class IStorageAccessor : IpcService
{
private IStorage _storage;
public IStorageAccessor(IStorage storage)
{
_storage = storage;
}
[CommandHipc(0)]
// GetSize() -> u64
public ResultCode GetSize(ServiceCtx context)
{
context.ResponseData.Write((long)_storage.Data.Length);
return ResultCode.Success;
}
[CommandHipc(10)]
// Write(u64, buffer<bytes, 0x21>)
public ResultCode Write(ServiceCtx context)
{
if (_storage.IsReadOnly)
{
return ResultCode.ObjectInvalid;
}
ulong writePosition = context.RequestData.ReadUInt64();
if (writePosition > (ulong)_storage.Data.Length)
{
return ResultCode.OutOfBounds;
}
(ulong position, ulong size) = context.Request.GetBufferType0x21();
size = Math.Min(size, (ulong)_storage.Data.Length - writePosition);
if (size > 0)
{
ulong maxSize = (ulong)_storage.Data.Length - writePosition;
if (size > maxSize)
{
size = maxSize;
}
byte[] data = new byte[size];
context.Memory.Read(position, data);
Buffer.BlockCopy(data, 0, _storage.Data, (int)writePosition, (int)size);
}
return ResultCode.Success;
}
[CommandHipc(11)]
// Read(u64) -> buffer<bytes, 0x22>
public ResultCode Read(ServiceCtx context)
{
ulong readPosition = context.RequestData.ReadUInt64();
if (readPosition > (ulong)_storage.Data.Length)
{
return ResultCode.OutOfBounds;
}
(ulong position, ulong size) = context.Request.GetBufferType0x22();
size = Math.Min(size, (ulong)_storage.Data.Length - readPosition);
byte[] data = new byte[size];
Buffer.BlockCopy(_storage.Data, (int)readPosition, data, 0, (int)size);
context.Memory.Write(position, data);
return ResultCode.Success;
}
}
}
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