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Kernel/SysFS: Stop cluttering the codebase with pieces of SysFS parts

Instead, start to put everything in one place to resemble the directory
structure of the SysFS when actually using it.
This commit is contained in:
Liav A 2022-04-22 09:44:31 +03:00 committed by Andreas Kling
parent cba4750921
commit 290eb53cb5
22 changed files with 26 additions and 26 deletions

View file

@ -0,0 +1,66 @@
/*
* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Error.h>
#include <AK/Function.h>
#include <AK/RefCounted.h>
#include <AK/RefPtr.h>
#include <AK/StringView.h>
#include <AK/Types.h>
#include <Kernel/FileSystem/File.h>
#include <Kernel/FileSystem/FileSystem.h>
#include <Kernel/FileSystem/OpenFileDescription.h>
#include <Kernel/Forward.h>
namespace Kernel {
struct SysFSInodeData : public OpenFileDescriptionData {
OwnPtr<KBuffer> buffer;
};
class SysFSComponent : public RefCounted<SysFSComponent> {
public:
virtual StringView name() const = 0;
virtual ErrorOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer&, OpenFileDescription*) const { return Error::from_errno(ENOTIMPL); }
virtual ErrorOr<void> traverse_as_directory(FileSystemID, Function<ErrorOr<void>(FileSystem::DirectoryEntryView const&)>) const { VERIFY_NOT_REACHED(); }
virtual RefPtr<SysFSComponent> lookup(StringView) { VERIFY_NOT_REACHED(); };
virtual mode_t permissions() const;
virtual ErrorOr<void> truncate(u64) { return EPERM; }
virtual size_t size() const { return 0; }
virtual ErrorOr<void> set_mtime(time_t) { return ENOTIMPL; }
virtual ErrorOr<size_t> write_bytes(off_t, size_t, UserOrKernelBuffer const&, OpenFileDescription*) { return EROFS; }
virtual ErrorOr<void> refresh_data(OpenFileDescription&) const { return {}; }
virtual ErrorOr<NonnullRefPtr<SysFSInode>> to_inode(SysFS const&) const;
InodeIndex component_index() const { return m_component_index; };
virtual ~SysFSComponent() = default;
protected:
SysFSComponent();
private:
InodeIndex m_component_index {};
};
class SysFSDirectory : public SysFSComponent {
public:
virtual ErrorOr<void> traverse_as_directory(FileSystemID, Function<ErrorOr<void>(FileSystem::DirectoryEntryView const&)>) const override;
virtual RefPtr<SysFSComponent> lookup(StringView name) override;
virtual ErrorOr<NonnullRefPtr<SysFSInode>> to_inode(SysFS const& sysfs_instance) const override final;
protected:
SysFSDirectory() = default;
explicit SysFSDirectory(SysFSDirectory const& parent_directory);
NonnullRefPtrVector<SysFSComponent> m_components;
RefPtr<SysFSDirectory> m_parent_directory;
};
}