message_show(9)

🌸 NAME 🌸

okay bestie, welcome to the message_show(9) page from the Kernel API Manual — this is the one about reading a message via sysfs. message_show — read message via sysfs. 💖

✨ SYNOPSIS ✨

ssize_t message_show (struct device *dev , struct device_attribute *attr
       , char *buf );

🎀 ARGUMENTS 🎀

• dev — the display device 🖥️
• attr — the display message attribute 🏷️
• buf — the buffer to read the message into 🫙

💅 DESCRIPTION 💅

So here’s the vibe: this reads the current message being displayed or scrolled across the display into buf, for reads from sysfs. It’s the sysfs read-side moment, and it’s giving “let me get that message for you.” ✨ No extra plot twists, periodt.

🫶 RETURN 🫶

It returns the number of characters written to buf. That’s the whole return vibe. 💖

🦋 SEE ALSO 🦋

• Kernel file ./drivers/auxdisplay/line-display.c struct linedisp_attachment(9)
• linedisp_scroll(9)
• linedisp_display(9)
• message_store(9)
• linedisp_attach(9)
• linedisp_detach(9)
• linedisp_register(9)
• linedisp_unregister(9)

mwah 💋 — source/version: ./drivers/auxdisplay · date: October 2026