banan-os/kernel/include/kernel/Device/ZeroDevice.h

28 lines
664 B
C++

#include <kernel/Device/Device.h>
namespace Kernel
{
class ZeroDevice : public CharacterDevice
{
public:
static BAN::ErrorOr<BAN::RefPtr<ZeroDevice>> create(mode_t, uid_t, gid_t);
virtual dev_t rdev() const override { return m_rdev; }
virtual BAN::StringView name() const override { return "zero"sv; }
protected:
ZeroDevice(mode_t mode, uid_t uid, gid_t gid, dev_t rdev)
: CharacterDevice(mode, uid, gid)
, m_rdev(rdev)
{ }
virtual BAN::ErrorOr<size_t> read_impl(off_t, void*, size_t) override;
virtual BAN::ErrorOr<size_t> write_impl(off_t, const void*, size_t size) override { return size; };
private:
const dev_t m_rdev;
};
}