mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-09-21 10:19:03 +03:00
d30d776ca4
This forced me to also come up with error codes for a bunch of situations where we'd previously just panic the kernel.
121 lines
3.7 KiB
C++
121 lines
3.7 KiB
C++
/*
|
|
* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <Kernel/FileSystem/FileSystem.h>
|
|
#include <Kernel/FileSystem/Inode.h>
|
|
#include <Kernel/FileSystem/SysFSComponent.h>
|
|
|
|
namespace Kernel {
|
|
|
|
class SysFSRootDirectory final : public SysFSDirectory {
|
|
friend class SysFSComponentRegistry;
|
|
|
|
public:
|
|
static NonnullRefPtr<SysFSRootDirectory> create();
|
|
virtual KResult traverse_as_directory(unsigned, Function<bool(FileSystem::DirectoryEntryView const&)>) const override;
|
|
|
|
private:
|
|
SysFSRootDirectory();
|
|
RefPtr<SysFSBusDirectory> m_buses_directory;
|
|
};
|
|
|
|
class SysFSBusDirectory : public SysFSDirectory {
|
|
friend class SysFSComponentRegistry;
|
|
|
|
public:
|
|
static NonnullRefPtr<SysFSBusDirectory> must_create(SysFSRootDirectory const&);
|
|
|
|
private:
|
|
explicit SysFSBusDirectory(SysFSRootDirectory const&);
|
|
};
|
|
|
|
class SysFSComponentRegistry {
|
|
public:
|
|
static SysFSComponentRegistry& the();
|
|
|
|
static void initialize();
|
|
|
|
SysFSComponentRegistry();
|
|
void register_new_component(SysFSComponent&);
|
|
|
|
SysFSDirectory& root_directory() { return m_root_directory; }
|
|
Mutex& get_lock() { return m_lock; }
|
|
|
|
void register_new_bus_directory(SysFSDirectory&);
|
|
SysFSBusDirectory& buses_directory();
|
|
|
|
private:
|
|
Mutex m_lock;
|
|
NonnullRefPtr<SysFSRootDirectory> m_root_directory;
|
|
};
|
|
|
|
class SysFS final : public FileSystem {
|
|
friend class SysFSInode;
|
|
friend class SysFSDirectoryInode;
|
|
|
|
public:
|
|
virtual ~SysFS() override;
|
|
static NonnullRefPtr<SysFS> create();
|
|
|
|
virtual KResult initialize() override;
|
|
virtual StringView class_name() const override { return "SysFS"sv; }
|
|
|
|
virtual Inode& root_inode() override;
|
|
|
|
private:
|
|
SysFS();
|
|
|
|
NonnullRefPtr<SysFSInode> m_root_inode;
|
|
};
|
|
|
|
class SysFSInode : public Inode {
|
|
friend class SysFS;
|
|
friend class SysFSDirectoryInode;
|
|
|
|
public:
|
|
static NonnullRefPtr<SysFSInode> create(SysFS const&, SysFSComponent const&);
|
|
StringView name() const { return m_associated_component->name(); }
|
|
|
|
protected:
|
|
SysFSInode(SysFS const&, SysFSComponent const&);
|
|
virtual KResultOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer& buffer, FileDescription*) const override;
|
|
virtual KResult traverse_as_directory(Function<bool(FileSystem::DirectoryEntryView const&)>) const override;
|
|
virtual KResultOr<NonnullRefPtr<Inode>> lookup(StringView name) override;
|
|
virtual void flush_metadata() override;
|
|
virtual InodeMetadata metadata() const override;
|
|
virtual KResultOr<size_t> write_bytes(off_t, size_t, UserOrKernelBuffer const&, FileDescription*) override;
|
|
virtual KResultOr<NonnullRefPtr<Inode>> create_child(StringView name, mode_t, dev_t, uid_t, gid_t) override;
|
|
virtual KResult add_child(Inode&, StringView const& name, mode_t) override;
|
|
virtual KResult remove_child(StringView const& name) override;
|
|
virtual KResult chmod(mode_t) override;
|
|
virtual KResult chown(uid_t, gid_t) override;
|
|
virtual KResult truncate(u64) override;
|
|
|
|
NonnullRefPtr<SysFSComponent> m_associated_component;
|
|
};
|
|
|
|
class SysFSDirectoryInode : public SysFSInode {
|
|
friend class SysFS;
|
|
|
|
public:
|
|
static NonnullRefPtr<SysFSDirectoryInode> create(SysFS const&, SysFSComponent const&);
|
|
virtual ~SysFSDirectoryInode() override;
|
|
|
|
SysFS& fs() { return static_cast<SysFS&>(Inode::fs()); }
|
|
SysFS const& fs() const { return static_cast<SysFS const&>(Inode::fs()); }
|
|
|
|
protected:
|
|
SysFSDirectoryInode(SysFS const&, SysFSComponent const&);
|
|
// ^Inode
|
|
virtual InodeMetadata metadata() const override;
|
|
virtual KResult traverse_as_directory(Function<bool(FileSystem::DirectoryEntryView const&)>) const override;
|
|
virtual KResultOr<NonnullRefPtr<Inode>> lookup(StringView name) override;
|
|
};
|
|
|
|
}
|