proc_int_k2u_conv_kop(9)

📦 version 7.3.1, in nixpkgs unstable

💖 proc_int_k2u_conv_kop — from the Kernel API Manual 💖

okay so bestie, buckle up, because this one is literally a little helper that takes a value from kernel space and drops it into a user space pointer ✨ it's giving "glorified assignment with a glow-up" and honestly? we love a humble icon 🎀

✨ SYNOPSIS ✨

int proc_int_k2u_conv_kop (ulong *u_ptr , const int *k_ptr , bool *negp
, ulong (*k_ptr_op)(const ulong) );

that's the whole vibe check, no cap 🫶

🌸 ARGUMENTS 🌸

  • u_ptr — pointer to user space variable 💅 this is the destination, the main character of the operation
  • k_ptr — pointer to kernel variable 🧚 this is where the value is coming from
  • negp — assigned TRUE if the converted kernel value is negative; FALSE otherweise 🌈 (yes, "otherweise" — that's exactly how the original spells it, and we're keeping it, periodt)
  • k_ptr_op — execute this function before assigning to u_ptr ⭐ it does a little pre-game routine first

🔥 DESCRIPTION 🔥

so what actually happens? it uses READ_ONCE to get the value from k_ptr 📖✨ then, if k_ptr_op is not NULL, it executes k_ptr_op before assigning to u_ptr. simple! iconic! efficient!

💀 important warning bestie: it does not check for overflow. not even a little. not even once. 🙈 so if you're expecting it to catch that for you... it's not that kind of function. handle your own overflow, queen 👑

⭐ RETURN ⭐

0 on success 💖 that's it, that's the whole return value, and honestly we stan a low-maintenance function 🫶

🌈 SEE ALSO 🌈

the whole friend group, fr fr 👑

and that's the page, bestie 🦋 this little gem lives in ./kernel and it's dated October 2026 — so yes, it's from the future, and yes, it still ate 💅✨ mwah, go read some sysctl code, ily 🫶🎀

📦 where this page comes from