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#include "devices/BlockDevice.hpp"
#include "devices/Device.hpp"
#include <cstddef>
namespace devices
{
block_device::block_device(size_t major, size_t minor, size_t block_size)
: device(major, minor)
, m_block_size(block_size)
{}
auto block_device::calculate_transfer(size_t block_index) const -> transfer_info
{
size_t const offset = block_index * m_block_size;
size_t const limit = size();
size_t const available = (offset < limit) ? (limit - offset) : 0;
size_t const to_transfer = (available < m_block_size) ? available : m_block_size;
return {offset, to_transfer, m_block_size - to_transfer};
}
} // namespace devices
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