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/*
* Copyright (c) 2018-2022, 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 ErrorOr<NonnullLockRefPtr<InodeFile>> create(NonnullLockRefPtr<Inode>&& inode)
{
auto file = adopt_lock_ref_if_nonnull(new (nothrow) InodeFile(move(inode)));
if (!file)
return ENOMEM;
return file.release_nonnull();
}
virtual ~InodeFile() override;
Inode const& inode() const { return *m_inode; }
Inode& inode() { return *m_inode; }
virtual bool can_read(OpenFileDescription const&, u64) const override { return true; }
virtual bool can_write(OpenFileDescription const&, u64) const override { return true; }
virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
virtual ErrorOr<size_t> write(OpenFileDescription&, u64, UserOrKernelBuffer const&, size_t) override;
virtual ErrorOr<void> ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg) override;
virtual ErrorOr<NonnullLockRefPtr<Memory::VMObject>> vmobject_for_mmap(Process&, Memory::VirtualRange const&, u64& offset, bool shared) override;
virtual ErrorOr<struct stat> stat() const override { return inode().metadata().stat(); }
virtual ErrorOr<NonnullOwnPtr<KString>> pseudo_path(OpenFileDescription const&) const override;
virtual ErrorOr<void> truncate(u64) override;
virtual ErrorOr<void> sync() override;
virtual ErrorOr<void> chown(Credentials const&, OpenFileDescription&, UserID, GroupID) override;
virtual ErrorOr<void> chmod(Credentials const&, OpenFileDescription&, mode_t) override;
virtual StringView class_name() const override { return "InodeFile"sv; }
virtual bool is_seekable() const override { return true; }
virtual bool is_inode() const override { return true; }
private:
virtual bool is_regular_file() const override;
explicit InodeFile(NonnullLockRefPtr<Inode>&&);
NonnullLockRefPtr<Inode> m_inode;
};
}
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