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60e16c15b6
* Fix memory corruption in FS Read methods when buffer is larger than needed * PR feedback * nit: Don't move this around
65 lines
No EOL
1.9 KiB
C#
65 lines
No EOL
1.9 KiB
C#
using LibHac;
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using LibHac.Common;
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using LibHac.Sf;
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using Ryujinx.HLE.HOS.Ipc;
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namespace Ryujinx.HLE.HOS.Services.Fs.FileSystemProxy
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{
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class IStorage : DisposableIpcService
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{
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private SharedRef<LibHac.FsSrv.Sf.IStorage> _baseStorage;
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public IStorage(ref SharedRef<LibHac.FsSrv.Sf.IStorage> baseStorage)
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{
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_baseStorage = SharedRef<LibHac.FsSrv.Sf.IStorage>.CreateMove(ref baseStorage);
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}
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[CommandHipc(0)]
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// Read(u64 offset, u64 length) -> buffer<u8, 0x46, 0> buffer
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public ResultCode Read(ServiceCtx context)
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{
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ulong offset = context.RequestData.ReadUInt64();
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ulong size = context.RequestData.ReadUInt64();
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if (context.Request.ReceiveBuff.Count > 0)
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{
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ulong bufferAddress = context.Request.ReceiveBuff[0].Position;
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ulong bufferLen = context.Request.ReceiveBuff[0].Size;
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// Use smaller length to avoid overflows.
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if (size > bufferLen)
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{
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size = bufferLen;
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}
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using (var region = context.Memory.GetWritableRegion(bufferAddress, (int)bufferLen, true))
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{
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Result result = _baseStorage.Get.Read((long)offset, new OutBuffer(region.Memory.Span), (long)size);
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return (ResultCode)result.Value;
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}
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}
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return ResultCode.Success;
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}
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[CommandHipc(4)]
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// GetSize() -> u64 size
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public ResultCode GetSize(ServiceCtx context)
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{
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Result result = _baseStorage.Get.GetSize(out long size);
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context.ResponseData.Write(size);
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return (ResultCode)result.Value;
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}
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protected override void Dispose(bool isDisposing)
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{
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if (isDisposing)
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{
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_baseStorage.Destroy();
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}
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}
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}
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} |