parse_message(9)

💖 NAME 💖

okay so bestie, this is parse_message(9) from the Kernel API Manual, and she has exactly one iconic job: parses a single message from the rx slot ✨. That’s the whole vibe. No cap.

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✨ SYNOPSIS ✨

Here’s the signature, character-for-character so you can copy it without breaking anything 💅:

int parse_message (struct vchiq_state *state , struct vchiq_header *header );

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🎀 ARGUMENTS 🎀

Two args, both important, no skipping 🙈:

• state — the vchiq state struct 🫶. Like, the state situation.
• header — the message header 🎀. Yes, that header.

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🦋 CONTEXT 🦋

Process context 🌸. That’s the context, bestie — don’t overthink it.

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💅 RETURN 💅

Return vibes check 👑:

• >= 0 — size of the parsed message payload (without header) 🔥. So the number is the payload size, and the header is not included in that count.
• -EINVAL — fatal error occurred, bail out is required 😭💀. This means a fatal error happened, and a bail out is required.

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c 🧚
• handle_poll(9) 👑

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mwah 💋 — source/version ./drivers/platform/raspberrypi..., date October 2026. Stay slay, and may your headers always be parsed 💜.