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Kernel/FileSystem: Make Inode::{write,read}_bytes methods non-virtual
We make these methods non-virtual because we want to ensure we properly enforce locking of the m_inode_lock mutex. Also, for write operations, we want to call prepare_to_write_data before the actual write. The previous design required us to ensure the callers do that at various places which lead to hard-to-find bugs. By moving everything to a place where we call prepare_to_write_data only once, we eliminate a possibilty of forgeting to call it on some code path in the kernel.
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20 changed files with 87 additions and 72 deletions
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@ -35,12 +35,12 @@ public:
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private:
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// ^Inode
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virtual ErrorOr<size_t> read_bytes(off_t, size_t, UserOrKernelBuffer& buffer, OpenFileDescription*) const override;
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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<NonnullLockRefPtr<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(off_t, size_t, UserOrKernelBuffer const& data, OpenFileDescription*) override;
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virtual ErrorOr<size_t> write_bytes_locked(off_t, size_t, UserOrKernelBuffer const& data, OpenFileDescription*) override;
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virtual ErrorOr<NonnullLockRefPtr<Inode>> create_child(StringView name, mode_t, dev_t, UserID, GroupID) override;
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virtual ErrorOr<void> add_child(Inode& child, StringView name, mode_t) override;
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virtual ErrorOr<void> remove_child(StringView name) override;
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