public/lib/component/cpp/testing/test_util.cc

// Copyright 2018 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.

#include "lib/component/cpp/testing/test_util.h"

#include <lib/fdio/limits.h>
#include <lib/fdio/util.h>

namespace component {
namespace testing {

fuchsia::sys::FileDescriptorPtr CloneFileDescriptor(int fd) {
  zx_handle_t handles[FDIO_MAX_HANDLES] = {0, 0, 0};
  uint32_t types[FDIO_MAX_HANDLES] = {
      ZX_HANDLE_INVALID,
      ZX_HANDLE_INVALID,
      ZX_HANDLE_INVALID,
  };
  zx_status_t status = fdio_clone_fd(fd, 0, handles, types);
  if (status <= 0)
    return nullptr;
  fuchsia::sys::FileDescriptorPtr result = fuchsia::sys::FileDescriptor::New();
  result->type0 = types[0];
  result->handle0 = zx::handle(handles[0]);
  result->type1 = types[1];
  result->handle1 = zx::handle(handles[1]);
  result->type2 = types[2];
  result->handle2 = zx::handle(handles[2]);
  return result;
}

zx::channel OpenAsDirectory(fs::Vfs* vfs, fbl::RefPtr<fs::Vnode> node) {
  zx::channel h1, h2;
  if (zx::channel::create(0, &h1, &h2) != ZX_OK)
    return zx::channel();
  if (vfs->ServeDirectory(std::move(node), std::move(h1)) != ZX_OK)
    return zx::channel();
  return h2;
}

}  // namespace testing
}  // namespace component