| // |
| // Copyright (C) 2023 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "kernel_module_parser.h" |
| |
| #include <fcntl.h> |
| #include "common/libs/fs/shared_fd.h" |
| |
| static constexpr std::string_view SIGNATURE_FOOTER = |
| "~Module signature appended~\n"; |
| |
| namespace cuttlefish { |
| |
| bool IsKernelModuleSigned(const char *path) { |
| auto fd = SharedFD::Open(path, O_RDONLY); |
| fd->LSeek(-SIGNATURE_FOOTER.size(), SEEK_END); |
| std::array<char, SIGNATURE_FOOTER.size()> buf{}; |
| fd->Read(buf.data(), buf.size()); |
| |
| return memcmp(buf.data(), SIGNATURE_FOOTER.data(), SIGNATURE_FOOTER.size()) == |
| 0; |
| } |
| |
| } // namespace cuttlefish |
