| // Copyright 2018 The Chromium OS 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 DIAGNOSTICS_WILCO_DTC_SUPPORTD_MOJO_UTILS_H_ |
| #define DIAGNOSTICS_WILCO_DTC_SUPPORTD_MOJO_UTILS_H_ |
| |
| #include <memory> |
| |
| #include <base/memory/shared_memory.h> |
| #include <base/strings/string_piece.h> |
| #include <mojo/public/cpp/system/handle.h> |
| |
| namespace diagnostics { |
| |
| // Allows to get access to the buffer in read only shared memory. It converts |
| // mojo::Handle to base::SharedMemory. |
| // |
| // |handle| must be a valid mojo handle of the non-empty buffer in the shared |
| // memory. |
| // |
| // Returns nullptr if error. |
| std::unique_ptr<base::SharedMemory> GetReadOnlySharedMemoryFromMojoHandle( |
| mojo::ScopedHandle handle); |
| |
| // Allocates buffer in shared memory, copies |content| to the buffer and |
| // converts shared buffer handle into |mojo::ScopedHandle|. |
| // |
| // Allocated shared memory is read only for another process. |
| // |
| // Returns invalid |mojo::ScopedHandle| if error happened or |content| is empty. |
| mojo::ScopedHandle CreateReadOnlySharedMemoryMojoHandle( |
| base::StringPiece content); |
| |
| } // namespace diagnostics |
| |
| #endif // DIAGNOSTICS_WILCO_DTC_SUPPORTD_MOJO_UTILS_H_ |
