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Kernel: Implement peek() function for DoubleBuffer
This allows us to "peek" into a DoubleBuffer without incrementing the m_read_buffer_index, which is needed to implement MSG_PEEK.
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2 changed files with 25 additions and 2 deletions
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@ -29,6 +29,12 @@ public:
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auto buffer = UserOrKernelBuffer::for_kernel_buffer(data);
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return read(buffer, size);
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}
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[[nodiscard]] ssize_t peek(UserOrKernelBuffer&, size_t);
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[[nodiscard]] ssize_t peek(u8* data, size_t size)
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{
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auto buffer = UserOrKernelBuffer::for_kernel_buffer(data);
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return peek(buffer, size);
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}
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bool is_empty() const { return m_empty; }
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