tomoyo_file_fcntl(9)

📦 version 7.3.1, in nixpkgs unstable

💅 tomoyo_file_fcntl — the kernel API manual, bestie edition 💅

okay so real talk, this page lives in the kernel API manual and we're about to read it together like it's the group chat. it's tomoyo_file_fcntl(9), obviously 💖

✨ NAME ✨

tomoyo_file_fcntl — bestie, this is the target for security_file_fcntl(). that's it, that's the whole vibe check 🎀

🌸 SYNOPSIS 🌸

int tomoyo_file_fcntl (struct file *file , unsigned int cmd , unsigned long arg );

literally the entire signature, no notes, no cap 👑

🦋 ARGUMENTS 🦋

  • file — a pointer to struct file. yes, that struct file. the icon itself 🫶
  • cmd — the command for fcntl. it's giving "what are we even doing here" energy 💅
  • arg — the argument for cmd. it rides shotgun, always 🌸

🔥 DESCRIPTION 🔥

okay so the whole personality of this function is short and sweet: it returns 0 on success, and a negative value otherwise. that's the tea ☕ the way that it's just zero-or-negative, no in-between, no drama, main character energy fr fr ✨

ngl bestie, "negative value otherwise" is all the docs give us — no extra lore, no secret bonus behaviour. do not go making stuff up, iykyk 😭

🌈 SEE ALSO 🌈

the kernel file ./security/tomoyo/tomoyo.c is where it lives, and here's the whole squad — every single one of them, no skips, no shortcuts 💜

like, the whole friend group showed up to the function's birthday party 🎂 obsessed, honestly 🍓

and that's the page!! 💖 this lil slice of docs comes from the ./security/tomoyo source and it's dated October 2026, filed under tomoyo_file_fcntl(9) — screenshot it, cite it, slay it, bye bestie 🧚‍♀️⭐

📦 where this page comes from