Method prepare_data_read

src/client/FSCrypt.cc:1148–1167

}

void FSCrypt::prepare_data_read(const FSCryptContextRef& ctx,
                                FSCryptKeyValidatorRef *kv,
                                uint64_t off,
                                uint64_t len,
                                uint64_t file_raw_size,
                                uint64_t *read_start,
                                uint64_t *read_len,
                                FSCryptFDataDencRef *denc)
{
  *denc = get_fdata_denc(ctx, kv);

  auto& fscrypt_denc = *denc;

  *read_start = (!fscrypt_denc ? off : fscrypt_block_start(off));
  uint64_t end = off + len;
  if (fscrypt_denc) {
    end = fscrypt_align_ofs(end);
  }
  *read_len = end - *read_start;
}
#endif