bpf_task_get_cgroup1(9)

📦 version 7.3.1, in nixpkgs unstable

🫶 bpf_task_get_cgroup1(9) 🫶

Hey bestie, welcome to the Kernel API Manual, section 9 — this is the bpf_task_get_cgroup1(9) page, and it's lowkey iconic. Let's get into it 💅✨

🌸 NAME 🌸

bpf_task_get_cgroup1 — grabs the cgroup associated with a task, but only within a specific cgroup1 hierarchy. That cgroup1 hierarchy is identified by its hierarchy ID. No cap, that's the whole point 🫶

✨ SYNOPSIS ✨

       __bpf_kfunc struct cgroup * bpf_task_get_cgroup1 (struct task_struct
       *task , int hierarchy_id );

🎀 ARGUMENTS 🎀

  • task — The target task. This is the task you're pointing at, bestie 🎯
  • hierarchy_id — The ID of a cgroup1 hierarchy. It tells you which cgroup1 hierarchy we're checking 💫

🦋 DESCRIPTION 🦋

Okay so on success, the cgroup is returen — yes, that's literally the spelling on the page, bestie 😭 — and it means you get the cgroup back. On failure, NULL is returned. That's the tea ☕💀

💜 SEE ALSO 💜

Kernel file: ./kernel/bpf/helpers.c

Cute lil sign-off: source/version is ./kernel/bpf, date is October 2026, and this whole page is bpf_task_get_cgroup1(9) — periodt 💅✨🫶

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