ceph/src/librbd/crypto/CryptoImageDispatch.cc

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3
   4 #include "librbd/crypto/CryptoImageDispatch.h"
   5
   6 namespace librbd {
   7 namespace crypto {
   8
   9 CryptoImageDispatch::CryptoImageDispatch(
  10         uint64_t data_offset) : m_data_offset(data_offset) {
  11 }
  12
  13
  14 void CryptoImageDispatch::remap_extents(
  15         io::Extents& image_extents, io::ImageExtentsMapType type) {
  16   if (type == io::IMAGE_EXTENTS_MAP_TYPE_LOGICAL_TO_PHYSICAL) {
  17     for (auto& extent: image_extents) {
  18       extent.first += m_data_offset;
  19     }
  20   } else if (type == io::IMAGE_EXTENTS_MAP_TYPE_PHYSICAL_TO_LOGICAL) {
  21     for (auto& extent: image_extents) {
  22       extent.first -= m_data_offset;
  23     }
  24   }
  25 }
  26
  27 } // namespace crypto
  28 } // namespace librbd