debugfs_create_x32(9)

📦 version 7.3.1, in nixpkgs unstable

💫 debugfs_create_x32 💫

okay so bestie, welcome to the Kernel API Manual — yes, the whole manual, and today's main character is debugfs_create_x32(9). grab a lil snack, we're learning kernel things 🍓

✨ NAME ✨

debugfs_create_x32 — create a debugfs file that is used to read and write an unsigned 32-bit value 🎀

like, it literally makes you a file that reads and writes a u32. that's the whole vibe. no cap.

🌸 SYNOPSIS 🌸

void debugfs_create_x32 (const char *name , umode_t mode , struct dentry
*parent , u32 *value );

okay look at her go, she's giving very much "four arguments, no return, no thoughts" 💅

🦋 ARGUMENTS 🦋

  • name — a pointer to a string containing the name of the file to create. that's your file's whole identity, choose wisely bestie, it's giving baby-name energy 👑
  • mode — the permission that the file should have. yes, permissions, we respect them here 🫶
  • parent — a pointer to the parent dentry for this file. This should be a directory dentry if set. and if this parameter is NULL, then the file will be created in the root of the debugfs filesystem. no parent = root, she's independent, she's thriving, main character energy fr fr ✨
  • value — a pointer to the variable that the file should read to and write from. this is the actual variable living its life, the file is just the messenger 💌
ngl, every single one of these is a pointer or a mode, so like... don't get cute with it. just pass what it asks for. 😭

🔥 SEE ALSO 🔥

Kernel file ./fs/debugfs/file.c — and honestly the whole friend group is here, the squad:

lowkey obsessed with how many siblings she has, it's a whole family reunion 💖

and that's the page!! source is ./fs/debugfs, version October 2026, and she signs off as debugfs_create_x32(9) — mwah, slay, periodt 💅✨🎀

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