smk_read_ambient(9)

📦 version 7.3.1, in nixpkgs unstable

💅 smk_read_ambient — it's giving "kernel API manual" ✨

okay so bestie, welcome to the Kernel API Manual entry for smk_read_ambient, the little function that handles read() for /smack/ambient. yeah. that one. let's get into it 🎀

🌸 NAME 🌸

smk_read_ambient — literally the read() side of /smack/ambient. that's the whole name, no notes 💖

🦋 SYNOPSIS 🦋

ssize_t smk_read_ambient (struct file *filp , char __user *buf , size_t cn , loff_t *ppos );

that's the whole signature, copied character for character, don't come for me about the spacing 😌

✨ ARGUMENTS ✨

  • filp — the file pointer. and honestly? it's not actually used. it's just there. standing in the corner at the party, vibing, contributing nothing 🙈
  • buf — where to put the result. the destination of the whole operation, main character energy fr 💫
  • cn — the maximum to send along. like a cap on how much we're giving out 🍓
  • ppos — where to start. your little bookmark, your starting point, your "we begin here" 🎀

💜 DESCRIPTION 💜

so what does it do? it returns the number of bytes read, or an error code, as appropriate. that's it. that's the description. short, sweet, iconic, no cap 👑

🔥 SEE ALSO 🔥

the kernel file lives at ./security/smack/smackfs.c, and here's the whole friend group, no one left out, periodt 💅

and that's the page, bestie 🫶 it came from ./security/smack, dated October 2026, and this whole thing is the smk_read_ambient(9) entry. go read some SMACK docs, iykyk 💖✨🎀

📦 where this page comes from