mirror of
https://github.com/SerenityOS/serenity
synced 2026-05-11 17:37:00 +02:00
0e94887b2c
Previously, the VFS layer would try to handle renames more-or-less by itself, which really only worked for ext2, and even that was only due to the replace_child kludge existing specifically for this purpose. This never worked properly for FATFS, since the VFS layer effectively depended on filesystems having some kind of reference-counting for inodes, which is something that simply doesn't exist on any FAT variant we support. To resolve various issues with the existing scheme, this commit makes filesystem implementations themselves responsible for the actual rename operation, while keeping all the existing validation inside the VFS layer. The only intended behavior change here is that rename operations should actually properly work on FATFS.
49 lines
1.7 KiB
C++
49 lines
1.7 KiB
C++
/*
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* Copyright (c) 2024, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Types.h>
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#include <Kernel/Devices/Loop/LoopDevice.h>
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#include <Kernel/FileSystem/DevLoopFS/FileSystem.h>
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#include <Kernel/FileSystem/Inode.h>
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namespace Kernel {
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class DevLoopFSInode final : public Inode {
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friend class DevLoopFS;
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public:
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virtual ~DevLoopFSInode() override;
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DevLoopFS& fs() { return static_cast<DevLoopFS&>(Inode::fs()); }
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DevLoopFS const& fs() const { return static_cast<DevLoopFS const&>(Inode::fs()); }
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private:
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DevLoopFSInode(DevLoopFS&, InodeIndex, LoopDevice&);
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// NOTE: This constructor is used for the root inode only.
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DevLoopFSInode(DevLoopFS&);
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// ^Inode
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virtual ErrorOr<size_t> read_bytes_locked(off_t, size_t, UserOrKernelBuffer& buffer, OpenFileDescription*) const override;
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virtual InodeMetadata metadata() const override;
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virtual ErrorOr<void> traverse_as_directory(Function<ErrorOr<void>(FileSystem::DirectoryEntryView const&)>) const override;
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virtual ErrorOr<NonnullRefPtr<Inode>> lookup(StringView name) override;
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virtual ErrorOr<void> flush_metadata() override;
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virtual ErrorOr<size_t> write_bytes_locked(off_t, size_t, UserOrKernelBuffer const& buffer, OpenFileDescription*) override;
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virtual ErrorOr<NonnullRefPtr<Inode>> create_child(StringView name, mode_t, dev_t, UserID, GroupID) override;
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virtual ErrorOr<void> add_child(Inode&, StringView name, mode_t) override;
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virtual ErrorOr<void> remove_child(StringView name) override;
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virtual ErrorOr<void> chmod(mode_t) override;
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virtual ErrorOr<void> chown(UserID, GroupID) override;
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LockWeakPtr<LoopDevice> m_loop_device;
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InodeMetadata m_metadata;
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};
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}
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