blob: 3bbf6019c9846dc195b2e994c8bc84de9d82f723 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
/*
* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#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/Forward.h>
#include <Kernel/KResult.h>
namespace Kernel {
class SysFSComponent : public RefCounted<SysFSComponent> {
public:
virtual StringView name() const { return m_name->view(); }
virtual KResultOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer&, FileDescription*) const { VERIFY_NOT_REACHED(); }
virtual KResult traverse_as_directory(unsigned, Function<bool(FileSystem::DirectoryEntryView const&)>) const { VERIFY_NOT_REACHED(); }
virtual RefPtr<SysFSComponent> lookup(StringView) { VERIFY_NOT_REACHED(); };
virtual KResultOr<size_t> write_bytes(off_t, size_t, UserOrKernelBuffer const&, FileDescription*) { return EROFS; }
virtual size_t size() const { return 0; }
virtual NonnullRefPtr<Inode> to_inode(SysFS const&) const;
InodeIndex component_index() const { return m_component_index; };
virtual ~SysFSComponent() = default;
protected:
explicit SysFSComponent(StringView name);
private:
NonnullOwnPtr<KString> m_name;
InodeIndex m_component_index {};
};
class SysFSDirectory : public SysFSComponent {
public:
virtual KResult traverse_as_directory(unsigned, Function<bool(FileSystem::DirectoryEntryView const&)>) const override;
virtual RefPtr<SysFSComponent> lookup(StringView name) override;
virtual NonnullRefPtr<Inode> to_inode(SysFS const& sysfs_instance) const override final;
protected:
explicit SysFSDirectory(StringView name);
SysFSDirectory(StringView name, SysFSDirectory const& parent_directory);
NonnullRefPtrVector<SysFSComponent> m_components;
RefPtr<SysFSDirectory> m_parent_directory;
};
}
|
