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using System;
namespace Ryujinx.HLE.HOS.Services.Am
{
class IStorageAccessor : IpcService
{
private IStorage _storage;
public IStorageAccessor(IStorage storage)
{
_storage = storage;
}
[Command(0)]
// GetSize() -> u64
public long GetSize(ServiceCtx context)
{
context.ResponseData.Write((long)_storage.Data.Length);
return 0;
}
[Command(10)]
// Write(u64, buffer<bytes, 0x21>)
public long Write(ServiceCtx context)
{
// TODO: Error conditions.
long writePosition = context.RequestData.ReadInt64();
(long position, long size) = context.Request.GetBufferType0x21();
if (size > 0)
{
long maxSize = _storage.Data.Length - writePosition;
if (size > maxSize)
{
size = maxSize;
}
byte[] data = context.Memory.ReadBytes(position, size);
Buffer.BlockCopy(data, 0, _storage.Data, (int)writePosition, (int)size);
}
return 0;
}
[Command(11)]
// Read(u64) -> buffer<bytes, 0x22>
public long Read(ServiceCtx context)
{
// TODO: Error conditions.
long readPosition = context.RequestData.ReadInt64();
(long position, long size) = context.Request.GetBufferType0x22();
byte[] data;
if (_storage.Data.Length > size)
{
data = new byte[size];
Buffer.BlockCopy(_storage.Data, 0, data, 0, (int)size);
}
else
{
data = _storage.Data;
}
context.Memory.WriteBytes(position, data);
return 0;
}
}
}
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