| // Copyright 2020 Google LLC |
| // |
| // 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 |
| // |
| // https://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 "fuzzing/replay/test_file_buffer.h" |
| |
| #include <cassert> |
| #include <cstdio> |
| |
| #include "absl/status/status.h" |
| #include "absl/strings/str_cat.h" |
| #include "fuzzing/replay/status_util.h" |
| |
| namespace fuzzing { |
| |
| TestFileBuffer::TestFileBuffer(size_t max_size) |
| : max_size_(max_size), last_size_(0) { |
| assert(max_size > 0 && "max_size must be positive"); |
| buffer_.reset(new char[max_size]); |
| } |
| |
| absl::Status TestFileBuffer::ReadFile(const std::string& path) { |
| FILE* f = fopen(path.c_str(), "r"); |
| if (!f) { |
| last_size_ = 0; |
| return ErrnoStatus(absl::StrCat("could not open test file ", path), errno); |
| } |
| last_size_ = fread(buffer_.get(), 1, max_size_, f); |
| absl::Status status = absl::OkStatus(); |
| if (ferror(f)) { |
| status = |
| ErrnoStatus(absl::StrCat("could not read test file ", path), errno); |
| } else if (!feof(f)) { |
| status = absl::ResourceExhaustedError( |
| absl::StrCat("file too large (max size ", max_size_, ")")); |
| } |
| fclose(f); |
| return status; |
| } |
| |
| } // namespace fuzzing |