svc_addsock(9)

📦 version 7.3.1, in nixpkgs unstable

💖 svc_addsock (9) — Kernel API Manual 💖

okay so bestie, welcome to the svc_addsock(9) page — it's a kernel API manual situation, and we're literally about to add a listener socket to an RPC service together. grab a strawberry 🍓 and let's go.

✨ NAME ✨

svc_addsock — add a listener socket to an RPC service. that's it, that's the whole vibe. you're plugging a new listener into a service and letting it cook. 🎀

🌸 SYNOPSIS 🌸

int svc_addsock (struct svc_serv *serv , struct net *net , const int fd
, char *name_return , const size_t len , const struct cred *cred );

look at her. six arguments. main character energy fr fr 👑

🦋 ARGUMENTS 🦋

  • serv — pointer to the RPC service you're adding a new listener to. this is the service getting the glow-up 💅
  • net — the caller's network namespace. your little network bubble 🌐
  • fd — file descriptor of the new listener. the actual socket bestie 🔥
  • name_return — pointer to the buffer you fill in with the name of the listener. she gets named 💖
  • len — size of that buffer. don't overflow, i'm begging 🙈
  • cred — the credential. yes ma'am, credentials 🫶

⭐ DESCRIPTION ⭐

so what does she actually do? she fills in the socket name and returns the positive length of the name if it all worked out — slay ✨

the name is terminated with '0.

and if something goes wrong? on error, she returns a negative errno value — not me getting a sad little negative number back 😭 that's your vibe check failing, babes.

ngl, keep an eye on two things: the positive return is a length, and the error return is a negative errno. two completely different feelings. don't mix them up 💀

🌈 SEE ALSO 🌈

kernel file ./net/sunrpc/svcsock.c and the whole friend group:

they're all iconic, go say hi 🧚

and that's the page!! this one lives in ./net/sunrpc and it's dated October 2026 — so mark your calendars bestie, and remember: positive length = we ate, negative errno = we did not eat 🍓💜 bye ily!!

📦 where this page comes from