Method Corrupt

src/leveldb/db/corruption_test.cc:112–156

  }

  void Corrupt(FileType filetype, int offset, int bytes_to_corrupt) {
    // Pick file to corrupt
    std::vector<std::string> filenames;
    ASSERT_OK(env_.target()->GetChildren(dbname_, &filenames));
    uint64_t number;
    FileType type;
    std::string fname;
    int picked_number = -1;
    for (size_t i = 0; i < filenames.size(); i++) {
      if (ParseFileName(filenames[i], &number, &type) && type == filetype &&
          int(number) > picked_number) {  // Pick latest file
        fname = dbname_ + "/" + filenames[i];
        picked_number = number;
      }
    }
    ASSERT_TRUE(!fname.empty()) << filetype;

    uint64_t file_size;
    ASSERT_OK(env_.target()->GetFileSize(fname, &file_size));

    if (offset < 0) {
      // Relative to end of file; make it absolute
      if (-offset > file_size) {
        offset = 0;
      } else {
        offset = file_size + offset;
      }
    }
    if (offset > file_size) {
      offset = file_size;
    }
    if (offset + bytes_to_corrupt > file_size) {
      bytes_to_corrupt = file_size - offset;
    }

    // Do it
    std::string contents;
    Status s = ReadFileToString(env_.target(), fname, &contents);
    ASSERT_TRUE(s.ok()) << s.ToString();
    for (int i = 0; i < bytes_to_corrupt; i++) {
      contents[i + offset] ^= 0x80;
    }
    s = WriteStringToFile(env_.target(), contents, fname);
    ASSERT_TRUE(s.ok()) << s.ToString();
  }

  int Property(const std::string& name) {
    std::string property;