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Kernel: Add support for reading from VirtIOConsole
This allows two-way communication with the host through a VirtIOConsole. This is necessary for features like clipboard sharing.
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5 changed files with 74 additions and 8 deletions
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@ -17,10 +17,14 @@ public:
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bool has_space() const { return m_num_used_bytes < m_capacity_in_bytes; }
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bool copy_data_in(const UserOrKernelBuffer& buffer, size_t offset, size_t length, PhysicalAddress& start_of_copied_data, size_t& bytes_copied);
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KResultOr<size_t> copy_data_out(size_t size, UserOrKernelBuffer& buffer) const;
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KResultOr<PhysicalAddress> reserve_space(size_t size);
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void reclaim_space(PhysicalAddress chunk_start, size_t chunk_size);
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PhysicalAddress start_of_used() const;
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SpinLock<u8>& lock() { return m_lock; }
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size_t used_bytes() const { return m_num_used_bytes; }
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PhysicalAddress start_of_region() const { return m_region->physical_page(0)->paddr(); }
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private:
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OwnPtr<Region> m_region;
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