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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <Kernel/FileSystem/File.h>
namespace Kernel {
class Inode;
class InodeFile final : public File {
public:
static KResultOr<NonnullRefPtr<InodeFile>> create(NonnullRefPtr<Inode>&& inode)
{
auto file = adopt_ref_if_nonnull(new (nothrow) InodeFile(move(inode)));
if (!file)
return ENOMEM;
return file.release_nonnull();
}
virtual ~InodeFile() override;
const Inode& inode() const { return *m_inode; }
Inode& inode() { return *m_inode; }
virtual bool can_read(const OpenFileDescription&, size_t) const override { return true; }
virtual bool can_write(const OpenFileDescription&, size_t) const override { return true; }
virtual KResultOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
virtual KResultOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override;
virtual KResult ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg) override;
virtual KResultOr<Memory::Region*> mmap(Process&, OpenFileDescription&, Memory::VirtualRange const&, u64 offset, int prot, bool shared) override;
virtual KResult stat(::stat& buffer) const override { return inode().metadata().stat(buffer); }
virtual String absolute_path(const OpenFileDescription&) const override;
virtual KResult truncate(u64) override;
virtual KResult chown(OpenFileDescription&, UserID, GroupID) override;
virtual KResult chmod(OpenFileDescription&, mode_t) override;
virtual StringView class_name() const override { return "InodeFile"; }
virtual bool is_seekable() const override { return true; }
virtual bool is_inode() const override { return true; }
private:
explicit InodeFile(NonnullRefPtr<Inode>&&);
NonnullRefPtr<Inode> m_inode;
};
}
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