nbcon_allow_unsafe_takeover(9)

✨ NAME ✨

okay so bestie, meet nbcon_allow_unsafe_takeover(9) from the Kernel API Manual 💖 — it literally checks if unsafe console takeovers are allowed. Iconic little helper behavior, no cap.

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🌸 SYNOPSIS 🌸

bool nbcon_allow_unsafe_takeover (void );

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🦋 ARGUMENTS 🦋

• void — no arguments, bestie. Zero. Nada. The void is voiding. ✨

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🎀 RETURN 🎀

• True — when it is permitted to perform unsafe console printing 🔥

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💖 DESCRIPTION 💖

This is also used by console_is_usable to determine if it is allowed to call write_atomic callbacks flagged as unsafe (CON_NBCON_ATOMIC_UNSAFE). So like, it’s the vibe check for whether those unsafe-flagged write_atomic callbacks can be called. 🫶

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🌈 SEE ALSO 🌈

Kernel file: ./kernel/printk/nbcon.c

• nbcon_state_set(9)
• nbcon_state_read(9)
• nbcon_state_try_cmpxchg(9)
• nbcon_seq_read(9)
• nbcon_seq_force(9)
• nbcon_seq_try_update(9)
• nbcon_context_try_acquire_direct(9)
• nbcon_context_try_acquire_requested(9)
• nbcon_context_try_acquire_handover(9)
• nbcon_context_try_acquire_hostile(9)
• nbcon_context_try_acquire(9)
• nbcon_context_release(9)
• nbcon_context_can_proceed(9)
• nbcon_can_proceed(9)
• __nbcon_context_update_unsafe(9)
• nbcon_enter_unsafe(9)
• nbcon_exit_unsafe(9)
• nbcon_reacquire_nobuf(9)
• nbcon_emit_next_record(9)
• nbcon_kthread_should_wakeup(9)
• nbcon_kthread_func(9)
• nbcon_irq_work(9)
• nbcon_kthreads_wake(9)
• nbcon_kthread_create(9)
• nbcon_get_cpu_emergency_nesting(9)
• nbcon_get_default_prio(9)
• nbcon_legacy_emit_next_record(9)
• __nbcon_atomic_flush_pending_con(9)
• nbcon_atomic_flush_pending_con(9)
• __nbcon_atomic_flush_pending(9)
• nbcon_atomic_flush_pending(9)
• nbcon_atomic_flush_unsafe(9)
• nbcon_cpu_emergency_enter(9)
• nbcon_cpu_emergency_exit(9)
• nbcon_alloc(9)
• nbcon_free(9)
• nbcon_device_try_acquire(9)
• nbcon_device_release(9)
• nbcon_kdb_try_acquire(9)
• nbcon_kdb_release(9)
• nbcon_write_context_is_braille(9)
• nbcon_braille_try_acquire(9)
• nbcon_braille_release(9)

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source/version: ./kernel/printk · date: October 2026 · page: nbcon_allow_unsafe_takeover(9) — and that’s the cute little footer, bestie 🫶💖✨