693   def _CheckLength(self, length, total_blocks, op_name, length_name):  argument
707       raise error.PayloadError('%s: %s is zero.' % (op_name, length_name))
711                                '%s: %s' % (op_name, length_name))
755   def _CheckReplaceOperation(self, op, data_length, total_dst_blocks, op_name):  argument
770                                'total_dst_blocks.' % op_name)
774       raise error.PayloadError('%s: contains src_extents.' % op_name)
778       raise error.PayloadError('%s: missing data_{offset,length}.' % op_name)
783                                            op_name + '.data_length', 'dst')
790             (op_name, data_length, total_dst_blocks, self.block_size))
792   def _CheckZeroOperation(self, op, op_name):  argument
804       raise error.PayloadError('%s: contains src_extents.' % op_name)
806       raise error.PayloadError('%s: contains data_length.' % op_name)
808       raise error.PayloadError('%s: contains data_offset.' % op_name)
810   def _CheckAnyDiffOperation(self, op, data_length, total_dst_blocks, op_name):  argument
825       raise error.PayloadError('%s: missing data_{offset,length}.' % op_name)
832           (op_name, data_length, total_dst_blocks, self.block_size,
838         raise error.PayloadError('%s: require {src,dst}_length.' % op_name)
841         raise error.PayloadError('%s: unneeded {src,dst}_length.' % op_name)
844                                 total_dst_blocks, op_name):  argument
858       raise error.PayloadError('%s: contains data_{offset,length}.' % op_name)
864           (op_name, total_src_blocks, total_dst_blocks))
866   def _CheckAnySourceOperation(self, op, total_src_blocks, op_name):  argument
879       raise error.PayloadError('%s: no src blocks in a source op.' % op_name)
883       raise error.PayloadError('%s: source hash missing.' % op_name)
885   def _CheckOperation(self, op, op_name, old_block_counters, new_block_counters,  argument
909         op_name + '.src_extents')
912         op_name + '.dst_extents')
918                           'data_length', op_name)
922       raise error.PayloadError('%s: dst_extents is empty.' % op_name)
926       self._CheckLength(op.src_length, total_src_blocks, op_name, 'src_length')
928       self._CheckLength(op.dst_length, total_dst_blocks, op_name, 'dst_length')
937             op_name)
945             (op_name, common.FormatSha256(op.data_sha256_hash),
952                                  op_name)
959             (op_name, data_offset, prev_data_offset))
964       self._CheckReplaceOperation(op, data_length, total_dst_blocks, op_name)
966       self._CheckZeroOperation(op, op_name)
969                                      total_dst_blocks, op_name)
970       self._CheckAnySourceOperation(op, total_src_blocks, op_name)
972       self._CheckAnyDiffOperation(op, data_length, total_dst_blocks, op_name)
973       self._CheckAnySourceOperation(op, total_src_blocks, op_name)
975       self._CheckAnyDiffOperation(op, data_length, total_dst_blocks, op_name)
976       self._CheckAnySourceOperation(op, total_src_blocks, op_name)
978       self._CheckAnyDiffOperation(op, data_length, total_dst_blocks, op_name)
979       self._CheckAnySourceOperation(op, total_src_blocks, op_name)
983           (op_name, op.type, self.minor_version))
1063     for op, op_name in common.OperationIter(operations, base_name):
1068         raise error.PayloadError('%s: invalid type (%d).' % (op_name, op.type))
1072           op, op_name, old_block_counters, new_block_counters,