Merge "libziparchive: use lseek directly." am: 959aea7e am: 94ea3198

  // Read the file back to a buffer and make sure the contents are

  // the same as the memory buffer we extracted directly to.

  std::vector<uint8_t> file_contents(kAbUncompressedSize);

  ASSERT_EQ(0, lseek64(tmp_output_file.fd, 0, SEEK_SET));

  ASSERT_EQ(0, lseek(tmp_output_file.fd, 0, SEEK_SET));

  ASSERT_TRUE(android::base::ReadFully(tmp_output_file.fd, &file_contents[0], file_contents.size()));

  ASSERT_EQ(file_contents, buffer);

  // Assert that the first 8 bytes of the file haven't been clobbered.

  uint8_t read_buffer[data_size];

  ASSERT_EQ(0, lseek64(tmp_file.fd, 0, SEEK_SET));

  ASSERT_EQ(0, lseek(tmp_file.fd, 0, SEEK_SET));

  ASSERT_TRUE(android::base::ReadFully(tmp_file.fd, read_buffer, data_size));

  ASSERT_EQ(0, memcmp(read_buffer, data, data_size));

  // Assert that the total length of the file is sane

  ASSERT_EQ(static_cast<ssize_t>(data_size + kATxtContents.size()),

            lseek64(tmp_file.fd, 0, SEEK_END));

            lseek(tmp_file.fd, 0, SEEK_END));

}

#if !defined(_WIN32)