p9_tag_alloc(9)

📦 version 7.3.1, in nixpkgs unstable

✨ p9_tag_alloc — bestie edition ✨

okay so this is a page from the Kernel API Manual (the 9 section, kernel internals vibes) and we're talking about p9_tag_alloc 💅 she's a function, she allocates a new request, and honestly? she eats. let's get into it 🫶

🎀 NAME 🎀

p9_tag_alloc — Allocate a new request. that's it, that's the whole gig ✨

🌸 SYNOPSIS 🌸

struct p9_req_t * p9_tag_alloc (struct p9_client *c , int8_t type , uint
t_size , uint r_size , const char *fmt , va_list ap );

no cap, that's the exact signature, don't come for me 😌

🦋 ARGUMENTS 🦋

  • c — Client session. your whole 9p connection situation 💫
  • type — Transaction type. what kind of message we're doing here 👑
  • t_size — Buffer size for holding this request. and listen — if it's 0, it gets automatic calculation by format template, so the template figures it out for you 🧚
  • r_size — Buffer size for holding server's reply on this request. same deal bestie: if it's 0, it's automatic calculation by format template ✨
  • fmt — Format template for assembling 9p request message (see p9pdu_vwritef). the lil recipe for your message 🍓
  • ap — Variable arguments to be fed to passed format template (see p9pdu_vwritef). the actual ingredients going into that recipe 💖

💜 CONTEXT 💜

Process context. that's the vibe check, we're in process context, periodt ✨

🌈 RETURN 🌈

Pointer to new request. slay, you get a shiny pointer back 💅

⭐ SEE ALSO ⭐

Kernel file ./net/9p/client.c — go read the source, iykyk 👑

all the siblings, the whole friend group fr fr 🫶

ngl this is kernel-level stuff, so be careful out there — it's literally the 9p client code in ./net/9p 💀🙈

and that's the page!! this one lives under ./net/9p in the Kernel API Manual, dated October 2026 — mwah, iconic, no notes 😭💖🎀

📦 where this page comes from