raw_notifier_call_chain(9)

📦 version 7.3.1, in nixpkgs unstable

💅 raw_notifier_call_chain(9)

okay so you're in the Kernel API Manual bestie, and today's main character is raw_notifier_call_chain — yes it's a whole mouthful, no we're not changing it, iykyk 🫶

✨ NAME ✨

raw_notifier_call_chain — Call functions in a raw notifier chain 🌸

🎀 SYNOPSIS 🎀

int raw_notifier_call_chain (struct raw_notifier_head *nh , unsigned long val , void *v );

🦋 ARGUMENTS 🦋

  • nh — Pointer to head of the raw notifier chain. it's the entry point fr fr, the head of the whole chain 💅
  • val — Value passed unmodified to notifier function. like, unmodified, do not touch it, it goes straight through ⭐
  • v — Pointer passed unmodified to notifier function. same deal, pointer goes in, pointer comes out, no edits, periodt 🔥

💖 DESCRIPTION 💖

Calls each function in a notifier chain in turn. like a little conga line of function calls 🎀

🚨 the functions run in an undefined context. and all locking must be provided by the caller. not us, bestie — you. we're not doing that for you 🙈

Now, the return value tea ☕:

  • If the return value of the notifier can be and'ed with NOTIFY_STOP_MASK then raw_notifier_call_chain will return immediately, with the return value of the notifier function which halted execution. like, that function said "we stop here" and we literally stopped 😭
  • Otherwise the return value is the return value of the last notifier function called. the final girl, the one still standing 💀

🌈 SEE ALSO 🌈

Kernel file ./kernel/notifier.c and all these gorgeous icons 👑

okay that's the whole thing, go forth and notify responsibly 💜 this lil page lives in ./kernel, version date October 2026, and it's signed raw_notifier_call_chain(9) — mwah, slay, bye 🧚✨

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