src/storage/blobfs/compression/decompressor-sandbox/decompressor-impl.h

// Copyright 2020 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef SRC_STORAGE_BLOBFS_COMPRESSION_DECOMPRESSOR_SANDBOX_DECOMPRESSOR_IMPL_H_
#define SRC_STORAGE_BLOBFS_COMPRESSION_DECOMPRESSOR_SANDBOX_DECOMPRESSOR_IMPL_H_

#include <fuchsia/blobfs/internal/cpp/fidl.h>
#include <fuchsia/blobfs/internal/llcpp/fidl.h>
#include <lib/fzl/owned-vmo-mapper.h>
#include <zircon/types.h>

namespace blobfs {

// ensure inline request/response are the same sizes to fit in a FIFO
static_assert(llcpp::fuchsia::blobfs::internal::DecompressRequest::PrimarySize ==
              llcpp::fuchsia::blobfs::internal::DecompressResponse::PrimarySize);
static_assert(llcpp::fuchsia::blobfs::internal::DecompressRequest::MaxOutOfLine == 0);
static_assert(llcpp::fuchsia::blobfs::internal::DecompressResponse::MaxOutOfLine == 0);

class DecompressorImpl : public fuchsia::blobfs::internal::DecompressorCreator {
 public:
  // DecompressorCreator implementation

  // Sets up a fifo to do work using the provided vmos, with the compressed vmo
  // as the src and the decompressed as the desination in all requests on the
  // fifo.
  void Create(zx::fifo, zx::vmo decompressed_vmo, zx::vmo compressed_vmo,
              CreateCallback callback) override;
};

}  // namespace blobfs

#endif  // SRC_STORAGE_BLOBFS_COMPRESSION_DECOMPRESSOR_SANDBOX_DECOMPRESSOR_IMPL_H_