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* Atomic ruleset update through libnftables
@ 2026-02-24 10:54 Subham Pal
  2026-02-24 12:57 ` Florian Westphal
  0 siblings, 1 reply; 2+ messages in thread
From: Subham Pal @ 2026-02-24 10:54 UTC (permalink / raw)
  To: netfilter

I am writing a firewall program and intending to configure nftables
using libnftables userspace library. The plan is to use
nft_run_cmd_from_buffer function call, passing JSOn input to its
buffer.

If I provide a set of rule updates to this function, will they be
applied atomically? The manpage does not seem to elaborate on this.

^ permalink raw reply	[flat|nested] 2+ messages in thread

* Re: Atomic ruleset update through libnftables
  2026-02-24 10:54 Atomic ruleset update through libnftables Subham Pal
@ 2026-02-24 12:57 ` Florian Westphal
  0 siblings, 0 replies; 2+ messages in thread
From: Florian Westphal @ 2026-02-24 12:57 UTC (permalink / raw)
  To: Subham Pal; +Cc: netfilter

Subham Pal <subhampal789@gmail.com> wrote:
> I am writing a firewall program and intending to configure nftables
> using libnftables userspace library. The plan is to use
> nft_run_cmd_from_buffer function call, passing JSOn input to its
> buffer.
> 
> If I provide a set of rule updates to this function, will they be
> applied atomically? The manpage does not seem to elaborate on this.

Yes, its applied atomically.  You can validate by running 'nft monitor'
on another terminal, this will show you when a new generation/config
arrives, and what was added/removed as part of the update.

^ permalink raw reply	[flat|nested] 2+ messages in thread

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2026-02-24 10:54 Atomic ruleset update through libnftables Subham Pal
2026-02-24 12:57 ` Florian Westphal

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