z_comp_init(9)

📦 version 7.3.1, in nixpkgs unstable

✨ z_comp_init — bestie edition ✨

okay so this is z_comp_init(9) from the Kernel API Manual 💅 and it's literally the glow-up ritual for a compressor you already allocated. no cap, it's giving "finish what you started" energy.

🌸 NAME 🌸

z_comp_init — initialize a previously-allocated compressor. that's it, that's the vibe 🎀

🦋 SYNOPSIS 🦋

int z_comp_init (void *arg , unsigned char *options , int opt_len , int
unit , int hdrlen , int debug );

look at all those params, main character energy fr fr 👑

💖 ARGUMENTS 💖

  • arg — pointer to the private state for the compressor. like, the compressor's own little diary 📓
  • options — pointer to the CCP option data describing the compression that was negotiated with the peer. the receipts from the negotiation 🤝
  • opt_len — length of the CCP option data at options. how many bytes of receipts we're dealing with 🧾
  • unit — PPP unit number for diagnostic messages. so when it yells, you know which unit is yelling 📢
  • hdrlen — ignored (present for backwards compatibility). bestie is literally just here for the vibes, it does nothing 💀
  • debug — debug flag; if non-zero, debug messages are printed. turn it on and it will NOT stop talking 🙈

✨ DESCRIPTION ✨

so here's the tea ☕ the CCP options described by options must match the options specified when the compressor was allocated. like, they have to be the same options. no substitutions, no swaps, we're not doing that today 🚫

the compressor history is reset. fresh start, clean slate, new era 🌈

returns 0 for failure (CCP options don't match) or 1 for success.

⚠️ lowkey important: 0 = fail, 1 = win. it is NOT the other way around, don't @ me, that's just how it is 😭

🫶 SEE ALSO 🫶

Kernel file ./drivers/net/ppp/ppp_deflate.c — plus the whole friend group:

and that's the whole page, bestie 💜 this icon lives in ./drivers/net/ppp, dated October 2026, and it's part of the Kernel API Manual — go forth and initialize responsibly, mwah 🎀✨🦋

📦 where this page comes from