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#ifndef TEACH_OS_KERNEL_FILESYSTEM_DEVICE_INODE_HPP
#define TEACH_OS_KERNEL_FILESYSTEM_DEVICE_INODE_HPP
#include "kernel/devices/block_device.hpp"
#include "kernel/devices/device.hpp"
#include "kernel/filesystem/inode.hpp"
#include <kstd/memory>
#include <cstddef>
namespace filesystem
{
struct device_inode : inode
{
explicit device_inode(kstd::shared_ptr<devices::device> const & device);
auto read(void * buffer, size_t offset, size_t size) const -> size_t override;
auto write(void const * buffer, size_t offset, size_t size) -> size_t override;
[[nodiscard]] auto device() const -> kstd::shared_ptr<devices::device> const &;
private:
using block_op = void (*)(size_t idx, size_t off, size_t len, size_t done, devices::block_device * device,
std::byte * scratch, void * buffer);
auto process_blocks(size_t offset, size_t size, void * buffer, block_op op) const -> size_t;
kstd::shared_ptr<devices::device> m_device;
};
} // namespace filesystem
#endif
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