STRUCT GPIOEVENT_REQUEST(9)

💅 struct gpioevent_request(9) — the Kernel API Manual glow-up

okay so bestie, welcome to the kernel API manual, and today's main character is struct gpioevent_request ✨ — literally the little info packet that tells the kernel "hey, I wanna subscribe to events on this GPIO line, bestie, please 🥺".

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🌸 NAME 🌸

struct gpioevent_request — Information about a GPIO event request 👑

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✨ SYNOPSIS ✨

struct gpioevent_request {
    __u32 lineoffset;
    __u32 handleflags;
    __u32 eventflags;
    char consumer_label[GPIO_MAX_NAME_SIZE];
    int fd;
 };

like, that's the whole vibe. five fields, zero drama 💖

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🎀 Members 🎀

• lineoffset — the desired line to subscribe to events from, specified by offset index for the associated GPIO device. it's giving "which one, bestie? point at it 👉"
• handleflags — desired handle flags for the desired GPIO line, like GPIOHANDLE_REQUEST_ACTIVE_LOW or GPIOHANDLE_REQUEST_OPEN_DRAIN. iconic little toggles, no cap 🦋
• eventflags — desired flags for the desired GPIO event line, such as GPIOEVENT_REQUEST_RISING_EDGE or GPIOEVENT_REQUEST_FALLING_EDGE. like, do you want the edge going up or down? choose ur fighter ⬆️⬇️
• consumer_label — a desired consumer label for the selected GPIO line(s) such as "my-listener" — yes that's literally the example, she's a whole aesthetic 🏷️
• fd — after a successful GPIO_GET_LINEEVENT_IOCTL operation, contains a valid anonymous file descriptor representing the request. the payoff!!! the moment!!! 🔥

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💀 Note 💀

This struct is part of ABI v1 and is deprecated. Use ABI v2 and struct gpio_v2_line_request instead.

fr fr, she's retired, she's legacy, we still respect her but the v2 one is the upgrade, periodt 🙈

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🫶 SEE ALSO 🫶

Kernel file ./include/uapi/linux/gpio.h and the whole friend group:

• struct gpiochip_info(9)
• enum gpio_v2_line_flag(9)
• struct gpio_v2_line_values(9)
• enum gpio_v2_line_attr_id(9)
• struct gpio_v2_line_attribute(9)
• struct gpio_v2_line_config_attribute(9)
• struct gpio_v2_line_config(9)
• struct gpio_v2_line_request(9)
• struct gpio_v2_line_info(9)
• enum gpio_v2_line_changed_type(9)
• struct gpio_v2_line_info_changed(9)
• enum gpio_v2_line_event_id(9)
• struct gpio_v2_line_event(9)
• struct gpioline_info(9)
• struct gpioline_info_changed(9)
• struct gpiohandle_request(9)
• struct gpiohandle_config(9)
• struct gpiohandle_data(9)
• struct gpioevent_data(9)

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and that's the page, bestie 💜 it lives in the Kernel API Manual, sourced from ./include/uapi/linux, dated October 2026 — so yeah, shoutout to the kernel API manual era, slay 🧚🌸⭐