| // Copyright 2018 The ChromiumOS Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef DIAGNOSTICS_BASE_MOJO_UTILS_H_ |
| #define DIAGNOSTICS_BASE_MOJO_UTILS_H_ |
| |
| #include <string_view> |
| |
| #include <base/memory/shared_memory_mapping.h> |
| #include <brillo/brillo_export.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::ReadOnlySharedMemoryRegion. |
| // |
| // |handle| must be a valid mojo handle of the non-empty buffer in the shared |
| // memory. |
| // |
| // Returns invalid |base::ReadOnlySharedMemoryMapping| if error. |
| BRILLO_EXPORT base::ReadOnlySharedMemoryMapping |
| GetReadOnlySharedMemoryMappingFromMojoHandle(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. |
| BRILLO_EXPORT mojo::ScopedHandle CreateReadOnlySharedMemoryRegionMojoHandle( |
| std::string_view content); |
| |
| } // namespace diagnostics |
| |
| #endif // DIAGNOSTICS_BASE_MOJO_UTILS_H_ |
